./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/popl20-more-sum-array-hom.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-sum-array-hom.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 37731ec014f4053387ac8b56c0764486866d63670c206743514c9636df9b594a --- Real Ultimate output --- This is Ultimate 0.2.5-?-c7c6ca5-m [2024-11-09 02:48:48,008 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 02:48:48,125 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-09 02:48:48,132 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 02:48:48,133 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 02:48:48,162 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 02:48:48,163 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 02:48:48,163 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 02:48:48,163 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 02:48:48,164 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 02:48:48,164 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 02:48:48,165 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 02:48:48,166 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 02:48:48,168 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 02:48:48,170 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 02:48:48,171 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 02:48:48,171 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 02:48:48,171 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 02:48:48,171 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 02:48:48,172 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 02:48:48,172 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 02:48:48,172 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 02:48:48,173 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 02:48:48,173 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 02:48:48,173 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 02:48:48,174 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 02:48:48,174 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 02:48:48,175 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 02:48:48,175 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 02:48:48,176 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 02:48:48,176 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 02:48:48,176 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 02:48:48,176 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 02:48:48,177 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 02:48:48,177 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 02:48:48,178 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 02:48:48,178 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 02:48:48,178 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 02:48:48,179 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 02:48:48,179 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 02:48:48,179 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 02:48:48,179 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 02:48:48,179 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 37731ec014f4053387ac8b56c0764486866d63670c206743514c9636df9b594a [2024-11-09 02:48:48,445 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 02:48:48,468 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 02:48:48,471 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 02:48:48,472 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 02:48:48,473 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 02:48:48,474 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-more-sum-array-hom.wvr.c [2024-11-09 02:48:49,932 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 02:48:50,116 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 02:48:50,117 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-sum-array-hom.wvr.c [2024-11-09 02:48:50,129 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c4cae3890/669e70ab8615412c9a984d483cb0435b/FLAG8da33147f [2024-11-09 02:48:50,145 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c4cae3890/669e70ab8615412c9a984d483cb0435b [2024-11-09 02:48:50,149 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 02:48:50,153 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 02:48:50,156 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 02:48:50,157 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 02:48:50,162 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 02:48:50,163 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 02:48:50" (1/1) ... [2024-11-09 02:48:50,164 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3117618d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:48:50, skipping insertion in model container [2024-11-09 02:48:50,167 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 02:48:50" (1/1) ... [2024-11-09 02:48:50,195 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 02:48:50,389 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-sum-array-hom.wvr.c[2435,2448] [2024-11-09 02:48:50,411 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 02:48:50,421 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 02:48:50,461 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-sum-array-hom.wvr.c[2435,2448] [2024-11-09 02:48:50,465 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 02:48:50,484 INFO L204 MainTranslator]: Completed translation [2024-11-09 02:48:50,485 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:48:50 WrapperNode [2024-11-09 02:48:50,485 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 02:48:50,486 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 02:48:50,486 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 02:48:50,486 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 02:48:50,493 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:48:50" (1/1) ... [2024-11-09 02:48:50,501 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:48:50" (1/1) ... [2024-11-09 02:48:50,529 INFO L138 Inliner]: procedures = 24, calls = 19, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 87 [2024-11-09 02:48:50,530 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 02:48:50,530 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 02:48:50,530 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 02:48:50,531 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 02:48:50,543 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:48:50" (1/1) ... [2024-11-09 02:48:50,543 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:48:50" (1/1) ... [2024-11-09 02:48:50,546 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:48:50" (1/1) ... [2024-11-09 02:48:50,578 INFO L175 MemorySlicer]: Split 6 memory accesses to 2 slices as follows [2, 4]. 67 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-11-09 02:48:50,578 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:48:50" (1/1) ... [2024-11-09 02:48:50,582 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:48:50" (1/1) ... [2024-11-09 02:48:50,589 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:48:50" (1/1) ... [2024-11-09 02:48:50,596 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:48:50" (1/1) ... [2024-11-09 02:48:50,597 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:48:50" (1/1) ... [2024-11-09 02:48:50,598 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:48:50" (1/1) ... [2024-11-09 02:48:50,601 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 02:48:50,602 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 02:48:50,602 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 02:48:50,602 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 02:48:50,603 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:48:50" (1/1) ... [2024-11-09 02:48:50,608 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 02:48:50,621 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:48:50,638 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 02:48:50,641 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 02:48:50,678 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 02:48:50,678 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-09 02:48:50,679 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-09 02:48:50,679 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-09 02:48:50,679 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-09 02:48:50,679 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-09 02:48:50,679 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-09 02:48:50,679 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 02:48:50,680 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-09 02:48:50,680 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-09 02:48:50,680 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-09 02:48:50,680 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-09 02:48:50,680 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 02:48:50,681 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 02:48:50,681 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-09 02:48:50,681 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-09 02:48:50,682 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 02:48:50,777 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 02:48:50,779 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 02:48:51,020 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-09 02:48:51,020 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 02:48:51,225 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 02:48:51,226 INFO L316 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-09 02:48:51,226 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 02:48:51 BoogieIcfgContainer [2024-11-09 02:48:51,226 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 02:48:51,229 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 02:48:51,229 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 02:48:51,232 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 02:48:51,232 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 02:48:50" (1/3) ... [2024-11-09 02:48:51,233 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75f6e74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 02:48:51, skipping insertion in model container [2024-11-09 02:48:51,233 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 02:48:50" (2/3) ... [2024-11-09 02:48:51,233 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75f6e74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 02:48:51, skipping insertion in model container [2024-11-09 02:48:51,235 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 02:48:51" (3/3) ... [2024-11-09 02:48:51,237 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-sum-array-hom.wvr.c [2024-11-09 02:48:51,252 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 02:48:51,252 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 02:48:51,252 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-09 02:48:51,310 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-09 02:48:51,356 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 33 places, 27 transitions, 75 flow [2024-11-09 02:48:51,390 INFO L124 PetriNetUnfolderBase]: 4/24 cut-off events. [2024-11-09 02:48:51,390 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-09 02:48:51,394 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37 conditions, 24 events. 4/24 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 18 event pairs, 0 based on Foata normal form. 0/19 useless extension candidates. Maximal degree in co-relation 18. Up to 2 conditions per place. [2024-11-09 02:48:51,395 INFO L82 GeneralOperation]: Start removeDead. Operand has 33 places, 27 transitions, 75 flow [2024-11-09 02:48:51,398 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 29 places, 23 transitions, 64 flow [2024-11-09 02:48:51,408 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 02:48:51,418 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;@498dbc0e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 02:48:51,418 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-09 02:48:51,428 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-09 02:48:51,428 INFO L124 PetriNetUnfolderBase]: 4/22 cut-off events. [2024-11-09 02:48:51,428 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-09 02:48:51,429 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:48:51,429 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:48:51,430 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 02:48:51,438 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:48:51,439 INFO L85 PathProgramCache]: Analyzing trace with hash 368648374, now seen corresponding path program 1 times [2024-11-09 02:48:51,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:48:51,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719450669] [2024-11-09 02:48:51,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:48:51,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:48:51,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:48:52,251 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 02:48:52,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:48:52,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719450669] [2024-11-09 02:48:52,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1719450669] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:48:52,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:48:52,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 02:48:52,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779422780] [2024-11-09 02:48:52,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:48:52,265 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 02:48:52,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:48:52,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 02:48:52,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 02:48:52,303 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2024-11-09 02:48:52,307 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 23 transitions, 64 flow. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 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 02:48:52,307 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:48:52,307 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2024-11-09 02:48:52,308 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:48:52,495 INFO L124 PetriNetUnfolderBase]: 387/567 cut-off events. [2024-11-09 02:48:52,495 INFO L125 PetriNetUnfolderBase]: For 49/49 co-relation queries the response was YES. [2024-11-09 02:48:52,499 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1210 conditions, 567 events. 387/567 cut-off events. For 49/49 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1795 event pairs, 124 based on Foata normal form. 1/417 useless extension candidates. Maximal degree in co-relation 1030. Up to 349 conditions per place. [2024-11-09 02:48:52,507 INFO L140 encePairwiseOnDemand]: 22/27 looper letters, 34 selfloop transitions, 4 changer transitions 1/40 dead transitions. [2024-11-09 02:48:52,508 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 40 transitions, 191 flow [2024-11-09 02:48:52,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 02:48:52,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-09 02:48:52,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 52 transitions. [2024-11-09 02:48:52,520 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6419753086419753 [2024-11-09 02:48:52,522 INFO L175 Difference]: Start difference. First operand has 29 places, 23 transitions, 64 flow. Second operand 3 states and 52 transitions. [2024-11-09 02:48:52,523 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 40 transitions, 191 flow [2024-11-09 02:48:52,526 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 40 transitions, 169 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-09 02:48:52,530 INFO L231 Difference]: Finished difference. Result has 26 places, 26 transitions, 78 flow [2024-11-09 02:48:52,533 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=78, PETRI_PLACES=26, PETRI_TRANSITIONS=26} [2024-11-09 02:48:52,536 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, -3 predicate places. [2024-11-09 02:48:52,537 INFO L471 AbstractCegarLoop]: Abstraction has has 26 places, 26 transitions, 78 flow [2024-11-09 02:48:52,537 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 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 02:48:52,538 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:48:52,538 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] [2024-11-09 02:48:52,538 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 02:48:52,538 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 02:48:52,539 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:48:52,539 INFO L85 PathProgramCache]: Analyzing trace with hash 1718815074, now seen corresponding path program 1 times [2024-11-09 02:48:52,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:48:52,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613841036] [2024-11-09 02:48:52,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:48:52,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:48:52,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:48:52,660 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 02:48:52,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:48:52,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613841036] [2024-11-09 02:48:52,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1613841036] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:48:52,661 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:48:52,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 02:48:52,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648407287] [2024-11-09 02:48:52,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:48:52,664 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 02:48:52,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:48:52,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 02:48:52,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 02:48:52,666 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2024-11-09 02:48:52,667 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 26 transitions, 78 flow. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 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 02:48:52,667 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:48:52,667 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2024-11-09 02:48:52,667 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:48:52,955 INFO L124 PetriNetUnfolderBase]: 703/1050 cut-off events. [2024-11-09 02:48:52,956 INFO L125 PetriNetUnfolderBase]: For 202/202 co-relation queries the response was YES. [2024-11-09 02:48:52,960 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2519 conditions, 1050 events. 703/1050 cut-off events. For 202/202 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 3873 event pairs, 401 based on Foata normal form. 46/1094 useless extension candidates. Maximal degree in co-relation 894. Up to 567 conditions per place. [2024-11-09 02:48:52,966 INFO L140 encePairwiseOnDemand]: 21/27 looper letters, 55 selfloop transitions, 5 changer transitions 0/61 dead transitions. [2024-11-09 02:48:52,966 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 61 transitions, 298 flow [2024-11-09 02:48:52,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 02:48:52,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 02:48:52,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 74 transitions. [2024-11-09 02:48:52,970 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5481481481481482 [2024-11-09 02:48:52,970 INFO L175 Difference]: Start difference. First operand has 26 places, 26 transitions, 78 flow. Second operand 5 states and 74 transitions. [2024-11-09 02:48:52,970 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 61 transitions, 298 flow [2024-11-09 02:48:52,972 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 61 transitions, 290 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-09 02:48:52,973 INFO L231 Difference]: Finished difference. Result has 32 places, 30 transitions, 112 flow [2024-11-09 02:48:52,974 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=112, PETRI_PLACES=32, PETRI_TRANSITIONS=30} [2024-11-09 02:48:52,975 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 3 predicate places. [2024-11-09 02:48:52,975 INFO L471 AbstractCegarLoop]: Abstraction has has 32 places, 30 transitions, 112 flow [2024-11-09 02:48:52,975 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 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 02:48:52,975 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:48:52,975 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] [2024-11-09 02:48:52,976 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 02:48:52,976 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 02:48:52,976 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:48:52,978 INFO L85 PathProgramCache]: Analyzing trace with hash -546188461, now seen corresponding path program 1 times [2024-11-09 02:48:52,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:48:52,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425028819] [2024-11-09 02:48:52,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:48:52,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:48:52,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:48:53,116 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 02:48:53,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:48:53,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425028819] [2024-11-09 02:48:53,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425028819] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:48:53,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:48:53,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 02:48:53,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630398887] [2024-11-09 02:48:53,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:48:53,118 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 02:48:53,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:48:53,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 02:48:53,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-09 02:48:53,119 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2024-11-09 02:48:53,119 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 30 transitions, 112 flow. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 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 02:48:53,121 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:48:53,121 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2024-11-09 02:48:53,121 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:48:53,291 INFO L124 PetriNetUnfolderBase]: 611/931 cut-off events. [2024-11-09 02:48:53,292 INFO L125 PetriNetUnfolderBase]: For 574/574 co-relation queries the response was YES. [2024-11-09 02:48:53,294 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2409 conditions, 931 events. 611/931 cut-off events. For 574/574 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 3434 event pairs, 372 based on Foata normal form. 41/971 useless extension candidates. Maximal degree in co-relation 1457. Up to 567 conditions per place. [2024-11-09 02:48:53,299 INFO L140 encePairwiseOnDemand]: 21/27 looper letters, 50 selfloop transitions, 5 changer transitions 0/56 dead transitions. [2024-11-09 02:48:53,299 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 56 transitions, 300 flow [2024-11-09 02:48:53,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 02:48:53,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 02:48:53,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 71 transitions. [2024-11-09 02:48:53,302 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5259259259259259 [2024-11-09 02:48:53,302 INFO L175 Difference]: Start difference. First operand has 32 places, 30 transitions, 112 flow. Second operand 5 states and 71 transitions. [2024-11-09 02:48:53,302 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 56 transitions, 300 flow [2024-11-09 02:48:53,305 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 56 transitions, 296 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-09 02:48:53,307 INFO L231 Difference]: Finished difference. Result has 37 places, 32 transitions, 135 flow [2024-11-09 02:48:53,308 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=135, PETRI_PLACES=37, PETRI_TRANSITIONS=32} [2024-11-09 02:48:53,309 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 8 predicate places. [2024-11-09 02:48:53,309 INFO L471 AbstractCegarLoop]: Abstraction has has 37 places, 32 transitions, 135 flow [2024-11-09 02:48:53,310 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 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 02:48:53,310 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:48:53,310 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] [2024-11-09 02:48:53,310 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 02:48:53,311 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 02:48:53,311 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:48:53,312 INFO L85 PathProgramCache]: Analyzing trace with hash -1422309272, now seen corresponding path program 1 times [2024-11-09 02:48:53,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:48:53,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374244484] [2024-11-09 02:48:53,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:48:53,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:48:53,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:48:53,417 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 02:48:53,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:48:53,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374244484] [2024-11-09 02:48:53,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1374244484] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 02:48:53,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 02:48:53,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 02:48:53,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526706848] [2024-11-09 02:48:53,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:48:53,419 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 02:48:53,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:48:53,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 02:48:53,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 02:48:53,420 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2024-11-09 02:48:53,421 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 32 transitions, 135 flow. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 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 02:48:53,422 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:48:53,422 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2024-11-09 02:48:53,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:48:53,573 INFO L124 PetriNetUnfolderBase]: 511/784 cut-off events. [2024-11-09 02:48:53,574 INFO L125 PetriNetUnfolderBase]: For 801/801 co-relation queries the response was YES. [2024-11-09 02:48:53,575 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2292 conditions, 784 events. 511/784 cut-off events. For 801/801 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2728 event pairs, 333 based on Foata normal form. 22/805 useless extension candidates. Maximal degree in co-relation 1615. Up to 567 conditions per place. [2024-11-09 02:48:53,579 INFO L140 encePairwiseOnDemand]: 21/27 looper letters, 24 selfloop transitions, 2 changer transitions 23/50 dead transitions. [2024-11-09 02:48:53,579 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 50 transitions, 293 flow [2024-11-09 02:48:53,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 02:48:53,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 02:48:53,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 67 transitions. [2024-11-09 02:48:53,581 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4962962962962963 [2024-11-09 02:48:53,581 INFO L175 Difference]: Start difference. First operand has 37 places, 32 transitions, 135 flow. Second operand 5 states and 67 transitions. [2024-11-09 02:48:53,581 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 50 transitions, 293 flow [2024-11-09 02:48:53,583 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 50 transitions, 288 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-09 02:48:53,584 INFO L231 Difference]: Finished difference. Result has 41 places, 27 transitions, 108 flow [2024-11-09 02:48:53,585 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=108, PETRI_PLACES=41, PETRI_TRANSITIONS=27} [2024-11-09 02:48:53,585 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 12 predicate places. [2024-11-09 02:48:53,586 INFO L471 AbstractCegarLoop]: Abstraction has has 41 places, 27 transitions, 108 flow [2024-11-09 02:48:53,586 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 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 02:48:53,586 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:48:53,586 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:48:53,586 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 02:48:53,587 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 02:48:53,587 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:48:53,587 INFO L85 PathProgramCache]: Analyzing trace with hash -2051914133, now seen corresponding path program 1 times [2024-11-09 02:48:53,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:48:53,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418860164] [2024-11-09 02:48:53,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:48:53,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:48:53,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:48:53,684 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 02:48:53,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:48:53,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418860164] [2024-11-09 02:48:53,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418860164] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:48:53,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1423793014] [2024-11-09 02:48:53,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:48:53,686 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:48:53,686 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:48:53,688 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:48:53,690 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 02:48:53,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:48:53,772 INFO L255 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 02:48:53,777 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:48:53,885 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 02:48:53,885 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:48:53,968 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 02:48:53,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1423793014] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-09 02:48:53,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-09 02:48:53,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6, 6] total 12 [2024-11-09 02:48:53,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770963641] [2024-11-09 02:48:53,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:48:53,974 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 02:48:53,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:48:53,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 02:48:53,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2024-11-09 02:48:53,976 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2024-11-09 02:48:53,976 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 27 transitions, 108 flow. Second operand has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:48:53,976 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:48:53,976 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2024-11-09 02:48:53,977 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:48:54,215 INFO L124 PetriNetUnfolderBase]: 517/764 cut-off events. [2024-11-09 02:48:54,216 INFO L125 PetriNetUnfolderBase]: For 723/723 co-relation queries the response was YES. [2024-11-09 02:48:54,217 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2340 conditions, 764 events. 517/764 cut-off events. For 723/723 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2657 event pairs, 150 based on Foata normal form. 14/777 useless extension candidates. Maximal degree in co-relation 2321. Up to 379 conditions per place. [2024-11-09 02:48:54,221 INFO L140 encePairwiseOnDemand]: 19/27 looper letters, 55 selfloop transitions, 9 changer transitions 0/65 dead transitions. [2024-11-09 02:48:54,221 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 65 transitions, 390 flow [2024-11-09 02:48:54,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 02:48:54,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-09 02:48:54,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 84 transitions. [2024-11-09 02:48:54,226 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-11-09 02:48:54,226 INFO L175 Difference]: Start difference. First operand has 41 places, 27 transitions, 108 flow. Second operand 7 states and 84 transitions. [2024-11-09 02:48:54,226 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 65 transitions, 390 flow [2024-11-09 02:48:54,232 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 65 transitions, 322 flow, removed 32 selfloop flow, removed 8 redundant places. [2024-11-09 02:48:54,235 INFO L231 Difference]: Finished difference. Result has 36 places, 32 transitions, 139 flow [2024-11-09 02:48:54,236 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=139, PETRI_PLACES=36, PETRI_TRANSITIONS=32} [2024-11-09 02:48:54,236 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 7 predicate places. [2024-11-09 02:48:54,239 INFO L471 AbstractCegarLoop]: Abstraction has has 36 places, 32 transitions, 139 flow [2024-11-09 02:48:54,239 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:48:54,239 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:48:54,239 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:48:54,259 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-09 02:48:54,443 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:48:54,444 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 02:48:54,445 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:48:54,445 INFO L85 PathProgramCache]: Analyzing trace with hash 1252915929, now seen corresponding path program 2 times [2024-11-09 02:48:54,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:48:54,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813752187] [2024-11-09 02:48:54,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:48:54,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:48:54,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:48:54,585 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 02:48:54,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:48:54,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813752187] [2024-11-09 02:48:54,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1813752187] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:48:54,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [278379219] [2024-11-09 02:48:54,586 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 02:48:54,586 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:48:54,586 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:48:54,588 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:48:54,590 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 02:48:54,667 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 02:48:54,667 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:48:54,669 INFO L255 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 02:48:54,670 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:48:54,742 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 02:48:54,743 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:48:54,827 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 02:48:54,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [278379219] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-09 02:48:54,828 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-09 02:48:54,828 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 13 [2024-11-09 02:48:54,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582917144] [2024-11-09 02:48:54,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:48:54,829 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 02:48:54,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:48:54,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 02:48:54,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2024-11-09 02:48:54,830 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2024-11-09 02:48:54,830 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 32 transitions, 139 flow. Second operand has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:48:54,830 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:48:54,830 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2024-11-09 02:48:54,830 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:48:55,037 INFO L124 PetriNetUnfolderBase]: 678/1005 cut-off events. [2024-11-09 02:48:55,038 INFO L125 PetriNetUnfolderBase]: For 950/950 co-relation queries the response was YES. [2024-11-09 02:48:55,039 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3045 conditions, 1005 events. 678/1005 cut-off events. For 950/950 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 3648 event pairs, 240 based on Foata normal form. 12/1016 useless extension candidates. Maximal degree in co-relation 3023. Up to 593 conditions per place. [2024-11-09 02:48:55,044 INFO L140 encePairwiseOnDemand]: 19/27 looper letters, 57 selfloop transitions, 12 changer transitions 0/70 dead transitions. [2024-11-09 02:48:55,044 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 70 transitions, 435 flow [2024-11-09 02:48:55,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 02:48:55,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-09 02:48:55,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 80 transitions. [2024-11-09 02:48:55,046 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42328042328042326 [2024-11-09 02:48:55,046 INFO L175 Difference]: Start difference. First operand has 36 places, 32 transitions, 139 flow. Second operand 7 states and 80 transitions. [2024-11-09 02:48:55,046 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 70 transitions, 435 flow [2024-11-09 02:48:55,049 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 70 transitions, 400 flow, removed 10 selfloop flow, removed 3 redundant places. [2024-11-09 02:48:55,050 INFO L231 Difference]: Finished difference. Result has 42 places, 37 transitions, 196 flow [2024-11-09 02:48:55,050 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=196, PETRI_PLACES=42, PETRI_TRANSITIONS=37} [2024-11-09 02:48:55,051 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 13 predicate places. [2024-11-09 02:48:55,051 INFO L471 AbstractCegarLoop]: Abstraction has has 42 places, 37 transitions, 196 flow [2024-11-09 02:48:55,051 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:48:55,052 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:48:55,052 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:48:55,070 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-09 02:48:55,252 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-09 02:48:55,253 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 02:48:55,253 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:48:55,253 INFO L85 PathProgramCache]: Analyzing trace with hash -1113471579, now seen corresponding path program 3 times [2024-11-09 02:48:55,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:48:55,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557627804] [2024-11-09 02:48:55,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:48:55,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:48:55,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:48:55,370 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 02:48:55,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:48:55,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557627804] [2024-11-09 02:48:55,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557627804] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:48:55,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1076492354] [2024-11-09 02:48:55,371 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 02:48:55,371 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:48:55,371 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:48:55,373 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:48:55,374 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 02:48:55,449 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-09 02:48:55,450 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:48:55,451 INFO L255 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 02:48:55,453 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:48:55,553 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 02:48:55,553 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:48:55,627 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 02:48:55,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1076492354] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-09 02:48:55,628 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-09 02:48:55,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6, 6] total 13 [2024-11-09 02:48:55,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823312477] [2024-11-09 02:48:55,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:48:55,628 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 02:48:55,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:48:55,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 02:48:55,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2024-11-09 02:48:55,629 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2024-11-09 02:48:55,630 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 37 transitions, 196 flow. Second operand has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:48:55,630 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:48:55,630 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2024-11-09 02:48:55,630 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:48:55,886 INFO L124 PetriNetUnfolderBase]: 784/1167 cut-off events. [2024-11-09 02:48:55,887 INFO L125 PetriNetUnfolderBase]: For 2006/2006 co-relation queries the response was YES. [2024-11-09 02:48:55,889 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4073 conditions, 1167 events. 784/1167 cut-off events. For 2006/2006 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 4395 event pairs, 319 based on Foata normal form. 14/1180 useless extension candidates. Maximal degree in co-relation 4048. Up to 820 conditions per place. [2024-11-09 02:48:55,895 INFO L140 encePairwiseOnDemand]: 19/27 looper letters, 56 selfloop transitions, 17 changer transitions 0/74 dead transitions. [2024-11-09 02:48:55,895 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 74 transitions, 519 flow [2024-11-09 02:48:55,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 02:48:55,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-09 02:48:55,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 82 transitions. [2024-11-09 02:48:55,897 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.43386243386243384 [2024-11-09 02:48:55,897 INFO L175 Difference]: Start difference. First operand has 42 places, 37 transitions, 196 flow. Second operand 7 states and 82 transitions. [2024-11-09 02:48:55,897 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 74 transitions, 519 flow [2024-11-09 02:48:55,901 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 74 transitions, 478 flow, removed 12 selfloop flow, removed 3 redundant places. [2024-11-09 02:48:55,903 INFO L231 Difference]: Finished difference. Result has 48 places, 45 transitions, 293 flow [2024-11-09 02:48:55,903 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=293, PETRI_PLACES=48, PETRI_TRANSITIONS=45} [2024-11-09 02:48:55,904 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 19 predicate places. [2024-11-09 02:48:55,905 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 45 transitions, 293 flow [2024-11-09 02:48:55,905 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:48:55,905 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:48:55,905 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:48:55,925 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-09 02:48:56,109 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:48:56,110 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 02:48:56,110 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:48:56,111 INFO L85 PathProgramCache]: Analyzing trace with hash -1921426485, now seen corresponding path program 4 times [2024-11-09 02:48:56,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:48:56,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503307538] [2024-11-09 02:48:56,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:48:56,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:48:56,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:48:56,217 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 02:48:56,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:48:56,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503307538] [2024-11-09 02:48:56,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503307538] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:48:56,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [113389469] [2024-11-09 02:48:56,218 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 02:48:56,218 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:48:56,219 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:48:56,220 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:48:56,222 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 02:48:56,285 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 02:48:56,285 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:48:56,286 INFO L255 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 02:48:56,287 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:48:56,355 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 02:48:56,356 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:48:56,423 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 02:48:56,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [113389469] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:48:56,424 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:48:56,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2024-11-09 02:48:56,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464687857] [2024-11-09 02:48:56,424 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:48:56,425 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-09 02:48:56,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:48:56,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-09 02:48:56,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2024-11-09 02:48:56,426 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2024-11-09 02:48:56,426 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 45 transitions, 293 flow. Second operand has 14 states, 14 states have (on average 6.5) internal successors, (91), 14 states have internal predecessors, (91), 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 02:48:56,426 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:48:56,426 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2024-11-09 02:48:56,426 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:48:56,978 INFO L124 PetriNetUnfolderBase]: 770/1153 cut-off events. [2024-11-09 02:48:56,978 INFO L125 PetriNetUnfolderBase]: For 3012/3012 co-relation queries the response was YES. [2024-11-09 02:48:56,980 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4440 conditions, 1153 events. 770/1153 cut-off events. For 3012/3012 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 4521 event pairs, 143 based on Foata normal form. 14/1166 useless extension candidates. Maximal degree in co-relation 4412. Up to 385 conditions per place. [2024-11-09 02:48:56,987 INFO L140 encePairwiseOnDemand]: 16/27 looper letters, 92 selfloop transitions, 71 changer transitions 0/164 dead transitions. [2024-11-09 02:48:56,988 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 164 transitions, 1336 flow [2024-11-09 02:48:56,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-09 02:48:56,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-11-09 02:48:56,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 182 transitions. [2024-11-09 02:48:56,990 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.37448559670781895 [2024-11-09 02:48:56,990 INFO L175 Difference]: Start difference. First operand has 48 places, 45 transitions, 293 flow. Second operand 18 states and 182 transitions. [2024-11-09 02:48:56,990 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 164 transitions, 1336 flow [2024-11-09 02:48:56,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 164 transitions, 1216 flow, removed 18 selfloop flow, removed 4 redundant places. [2024-11-09 02:48:56,999 INFO L231 Difference]: Finished difference. Result has 63 places, 99 transitions, 830 flow [2024-11-09 02:48:56,999 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=256, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=830, PETRI_PLACES=63, PETRI_TRANSITIONS=99} [2024-11-09 02:48:57,000 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 34 predicate places. [2024-11-09 02:48:57,000 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 99 transitions, 830 flow [2024-11-09 02:48:57,000 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.5) internal successors, (91), 14 states have internal predecessors, (91), 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 02:48:57,001 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:48:57,001 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:48:57,017 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-09 02:48:57,201 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:48:57,202 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 02:48:57,202 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:48:57,202 INFO L85 PathProgramCache]: Analyzing trace with hash 910923729, now seen corresponding path program 5 times [2024-11-09 02:48:57,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:48:57,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350133472] [2024-11-09 02:48:57,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:48:57,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:48:57,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:48:57,329 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 02:48:57,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:48:57,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350133472] [2024-11-09 02:48:57,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [350133472] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:48:57,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [499294830] [2024-11-09 02:48:57,330 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-09 02:48:57,330 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:48:57,330 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:48:57,332 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:48:57,334 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-09 02:48:57,408 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 02:48:57,408 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:48:57,409 INFO L255 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 02:48:57,410 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:48:57,485 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 02:48:57,485 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:48:57,556 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 02:48:57,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [499294830] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:48:57,556 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:48:57,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2024-11-09 02:48:57,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024095155] [2024-11-09 02:48:57,557 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:48:57,557 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-09 02:48:57,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:48:57,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-09 02:48:57,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2024-11-09 02:48:57,558 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2024-11-09 02:48:57,558 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 99 transitions, 830 flow. Second operand has 15 states, 15 states have (on average 6.666666666666667) internal successors, (100), 15 states have internal predecessors, (100), 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 02:48:57,558 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:48:57,558 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2024-11-09 02:48:57,559 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:48:58,030 INFO L124 PetriNetUnfolderBase]: 753/1118 cut-off events. [2024-11-09 02:48:58,030 INFO L125 PetriNetUnfolderBase]: For 3028/3028 co-relation queries the response was YES. [2024-11-09 02:48:58,033 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4772 conditions, 1118 events. 753/1118 cut-off events. For 3028/3028 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 4271 event pairs, 170 based on Foata normal form. 12/1130 useless extension candidates. Maximal degree in co-relation 4741. Up to 504 conditions per place. [2024-11-09 02:48:58,038 INFO L140 encePairwiseOnDemand]: 16/27 looper letters, 79 selfloop transitions, 75 changer transitions 0/155 dead transitions. [2024-11-09 02:48:58,038 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 155 transitions, 1379 flow [2024-11-09 02:48:58,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-09 02:48:58,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-09 02:48:58,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 143 transitions. [2024-11-09 02:48:58,040 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3783068783068783 [2024-11-09 02:48:58,040 INFO L175 Difference]: Start difference. First operand has 63 places, 99 transitions, 830 flow. Second operand 14 states and 143 transitions. [2024-11-09 02:48:58,040 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 155 transitions, 1379 flow [2024-11-09 02:48:58,050 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 155 transitions, 1244 flow, removed 42 selfloop flow, removed 4 redundant places. [2024-11-09 02:48:58,053 INFO L231 Difference]: Finished difference. Result has 74 places, 117 transitions, 983 flow [2024-11-09 02:48:58,053 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=699, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=983, PETRI_PLACES=74, PETRI_TRANSITIONS=117} [2024-11-09 02:48:58,053 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 45 predicate places. [2024-11-09 02:48:58,054 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 117 transitions, 983 flow [2024-11-09 02:48:58,054 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.666666666666667) internal successors, (100), 15 states have internal predecessors, (100), 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 02:48:58,054 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:48:58,054 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:48:58,071 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-09 02:48:58,254 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:48:58,255 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 02:48:58,255 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:48:58,256 INFO L85 PathProgramCache]: Analyzing trace with hash -193223073, now seen corresponding path program 6 times [2024-11-09 02:48:58,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:48:58,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733683632] [2024-11-09 02:48:58,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:48:58,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:48:58,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:48:58,366 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 02:48:58,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:48:58,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733683632] [2024-11-09 02:48:58,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [733683632] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:48:58,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [429881096] [2024-11-09 02:48:58,367 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-09 02:48:58,367 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:48:58,368 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:48:58,369 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:48:58,371 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-09 02:48:58,443 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-09 02:48:58,443 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:48:58,444 INFO L255 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 02:48:58,445 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:48:58,519 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 02:48:58,519 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:48:58,598 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 02:48:58,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [429881096] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-09 02:48:58,602 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-09 02:48:58,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 15 [2024-11-09 02:48:58,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320295406] [2024-11-09 02:48:58,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:48:58,602 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 02:48:58,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:48:58,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 02:48:58,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2024-11-09 02:48:58,603 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2024-11-09 02:48:58,603 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 117 transitions, 983 flow. Second operand has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:48:58,604 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:48:58,604 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2024-11-09 02:48:58,604 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:48:58,835 INFO L124 PetriNetUnfolderBase]: 736/1083 cut-off events. [2024-11-09 02:48:58,835 INFO L125 PetriNetUnfolderBase]: For 3363/3363 co-relation queries the response was YES. [2024-11-09 02:48:58,837 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4831 conditions, 1083 events. 736/1083 cut-off events. For 3363/3363 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 4011 event pairs, 191 based on Foata normal form. 12/1095 useless extension candidates. Maximal degree in co-relation 4796. Up to 619 conditions per place. [2024-11-09 02:48:58,842 INFO L140 encePairwiseOnDemand]: 19/27 looper letters, 82 selfloop transitions, 50 changer transitions 0/133 dead transitions. [2024-11-09 02:48:58,842 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 133 transitions, 1283 flow [2024-11-09 02:48:58,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 02:48:58,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-09 02:48:58,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 81 transitions. [2024-11-09 02:48:58,843 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-11-09 02:48:58,843 INFO L175 Difference]: Start difference. First operand has 74 places, 117 transitions, 983 flow. Second operand 7 states and 81 transitions. [2024-11-09 02:48:58,843 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 133 transitions, 1283 flow [2024-11-09 02:48:58,852 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 133 transitions, 1200 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-11-09 02:48:58,854 INFO L231 Difference]: Finished difference. Result has 72 places, 113 transitions, 964 flow [2024-11-09 02:48:58,855 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=864, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=964, PETRI_PLACES=72, PETRI_TRANSITIONS=113} [2024-11-09 02:48:58,855 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 43 predicate places. [2024-11-09 02:48:58,855 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 113 transitions, 964 flow [2024-11-09 02:48:58,855 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 02:48:58,855 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:48:58,856 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:48:58,873 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-09 02:48:59,059 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:48:59,060 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 02:48:59,060 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:48:59,060 INFO L85 PathProgramCache]: Analyzing trace with hash -175012763, now seen corresponding path program 1 times [2024-11-09 02:48:59,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:48:59,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813880424] [2024-11-09 02:48:59,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:48:59,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:48:59,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:48:59,194 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 02:48:59,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:48:59,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813880424] [2024-11-09 02:48:59,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1813880424] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:48:59,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1738340094] [2024-11-09 02:48:59,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:48:59,195 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:48:59,196 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:48:59,197 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:48:59,198 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-09 02:48:59,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:48:59,267 INFO L255 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-09 02:48:59,268 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:48:59,313 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 02:48:59,314 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:48:59,343 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 02:48:59,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1738340094] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-09 02:48:59,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-09 02:48:59,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 4] total 9 [2024-11-09 02:48:59,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244501739] [2024-11-09 02:48:59,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 02:48:59,344 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 02:48:59,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:48:59,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 02:48:59,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-09 02:48:59,345 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2024-11-09 02:48:59,345 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 113 transitions, 964 flow. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 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 02:48:59,345 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:48:59,345 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2024-11-09 02:48:59,346 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:48:59,484 INFO L124 PetriNetUnfolderBase]: 721/1053 cut-off events. [2024-11-09 02:48:59,484 INFO L125 PetriNetUnfolderBase]: For 3327/3327 co-relation queries the response was YES. [2024-11-09 02:48:59,486 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4574 conditions, 1053 events. 721/1053 cut-off events. For 3327/3327 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 3815 event pairs, 200 based on Foata normal form. 70/1123 useless extension candidates. Maximal degree in co-relation 4539. Up to 816 conditions per place. [2024-11-09 02:48:59,492 INFO L140 encePairwiseOnDemand]: 22/27 looper letters, 122 selfloop transitions, 14 changer transitions 0/137 dead transitions. [2024-11-09 02:48:59,492 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 137 transitions, 1426 flow [2024-11-09 02:48:59,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 02:48:59,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-09 02:48:59,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 56 transitions. [2024-11-09 02:48:59,493 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4148148148148148 [2024-11-09 02:48:59,494 INFO L175 Difference]: Start difference. First operand has 72 places, 113 transitions, 964 flow. Second operand 5 states and 56 transitions. [2024-11-09 02:48:59,494 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 137 transitions, 1426 flow [2024-11-09 02:48:59,502 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 137 transitions, 1304 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-11-09 02:48:59,504 INFO L231 Difference]: Finished difference. Result has 71 places, 114 transitions, 922 flow [2024-11-09 02:48:59,505 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=856, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=922, PETRI_PLACES=71, PETRI_TRANSITIONS=114} [2024-11-09 02:48:59,505 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 42 predicate places. [2024-11-09 02:48:59,505 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 114 transitions, 922 flow [2024-11-09 02:48:59,505 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 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 02:48:59,506 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:48:59,506 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] [2024-11-09 02:48:59,523 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-09 02:48:59,709 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:48:59,710 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 02:48:59,710 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:48:59,710 INFO L85 PathProgramCache]: Analyzing trace with hash 1433195013, now seen corresponding path program 1 times [2024-11-09 02:48:59,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:48:59,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582060161] [2024-11-09 02:48:59,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:48:59,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:48:59,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:49:00,193 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:49:00,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:49:00,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582060161] [2024-11-09 02:49:00,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582060161] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:49:00,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [273010708] [2024-11-09 02:49:00,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:49:00,194 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:49:00,194 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:49:00,196 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:49:00,196 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-09 02:49:00,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:49:00,288 INFO L255 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-09 02:49:00,290 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:49:00,345 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-09 02:49:00,528 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 02:49:00,528 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 15 [2024-11-09 02:49:00,641 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:49:00,641 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:49:00,987 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 02:49:00,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [273010708] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:49:00,988 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:49:00,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10, 8] total 24 [2024-11-09 02:49:00,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578671977] [2024-11-09 02:49:00,988 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:49:00,989 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-09 02:49:00,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:49:00,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-09 02:49:00,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=483, Unknown=0, NotChecked=0, Total=600 [2024-11-09 02:49:00,990 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2024-11-09 02:49:00,991 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 114 transitions, 922 flow. Second operand has 25 states, 25 states have (on average 6.52) internal successors, (163), 25 states have internal predecessors, (163), 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 02:49:00,991 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:49:00,991 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2024-11-09 02:49:00,991 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:49:02,087 INFO L124 PetriNetUnfolderBase]: 1614/2340 cut-off events. [2024-11-09 02:49:02,088 INFO L125 PetriNetUnfolderBase]: For 6161/6161 co-relation queries the response was YES. [2024-11-09 02:49:02,093 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10926 conditions, 2340 events. 1614/2340 cut-off events. For 6161/6161 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 9912 event pairs, 91 based on Foata normal form. 1/2341 useless extension candidates. Maximal degree in co-relation 9118. Up to 1292 conditions per place. [2024-11-09 02:49:02,117 INFO L140 encePairwiseOnDemand]: 15/27 looper letters, 259 selfloop transitions, 234 changer transitions 1/495 dead transitions. [2024-11-09 02:49:02,117 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 495 transitions, 4909 flow [2024-11-09 02:49:02,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-09 02:49:02,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-11-09 02:49:02,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 280 transitions. [2024-11-09 02:49:02,119 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4713804713804714 [2024-11-09 02:49:02,119 INFO L175 Difference]: Start difference. First operand has 71 places, 114 transitions, 922 flow. Second operand 22 states and 280 transitions. [2024-11-09 02:49:02,119 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 495 transitions, 4909 flow [2024-11-09 02:49:02,150 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 495 transitions, 4866 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-11-09 02:49:02,157 INFO L231 Difference]: Finished difference. Result has 106 places, 318 transitions, 3643 flow [2024-11-09 02:49:02,158 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=902, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=3643, PETRI_PLACES=106, PETRI_TRANSITIONS=318} [2024-11-09 02:49:02,159 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 77 predicate places. [2024-11-09 02:49:02,159 INFO L471 AbstractCegarLoop]: Abstraction has has 106 places, 318 transitions, 3643 flow [2024-11-09 02:49:02,159 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 6.52) internal successors, (163), 25 states have internal predecessors, (163), 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 02:49:02,160 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:49:02,160 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] [2024-11-09 02:49:02,178 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-09 02:49:02,361 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-09 02:49:02,361 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 02:49:02,361 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:49:02,362 INFO L85 PathProgramCache]: Analyzing trace with hash -1372818606, now seen corresponding path program 1 times [2024-11-09 02:49:02,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:49:02,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282438588] [2024-11-09 02:49:02,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:49:02,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:49:02,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:49:02,852 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:49:02,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:49:02,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282438588] [2024-11-09 02:49:02,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [282438588] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:49:02,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1368989201] [2024-11-09 02:49:02,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:49:02,854 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:49:02,854 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:49:02,856 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:49:02,858 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-09 02:49:02,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:49:02,935 INFO L255 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-09 02:49:02,937 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:49:02,963 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-09 02:49:03,082 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-09 02:49:03,114 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:49:03,115 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:49:03,273 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 02:49:03,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1368989201] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:49:03,273 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:49:03,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 5] total 18 [2024-11-09 02:49:03,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635656425] [2024-11-09 02:49:03,274 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:49:03,274 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-09 02:49:03,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:49:03,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-09 02:49:03,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=269, Unknown=0, NotChecked=0, Total=342 [2024-11-09 02:49:03,275 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2024-11-09 02:49:03,275 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 318 transitions, 3643 flow. Second operand has 19 states, 19 states have (on average 7.315789473684211) internal successors, (139), 19 states have internal predecessors, (139), 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 02:49:03,276 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:49:03,276 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2024-11-09 02:49:03,276 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:49:03,916 INFO L124 PetriNetUnfolderBase]: 1893/2729 cut-off events. [2024-11-09 02:49:03,916 INFO L125 PetriNetUnfolderBase]: For 13384/13384 co-relation queries the response was YES. [2024-11-09 02:49:03,925 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15806 conditions, 2729 events. 1893/2729 cut-off events. For 13384/13384 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 11740 event pairs, 138 based on Foata normal form. 1/2730 useless extension candidates. Maximal degree in co-relation 14578. Up to 1631 conditions per place. [2024-11-09 02:49:03,940 INFO L140 encePairwiseOnDemand]: 17/27 looper letters, 236 selfloop transitions, 214 changer transitions 1/452 dead transitions. [2024-11-09 02:49:03,940 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 452 transitions, 5905 flow [2024-11-09 02:49:03,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-09 02:49:03,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-09 02:49:03,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 123 transitions. [2024-11-09 02:49:03,941 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5061728395061729 [2024-11-09 02:49:03,941 INFO L175 Difference]: Start difference. First operand has 106 places, 318 transitions, 3643 flow. Second operand 9 states and 123 transitions. [2024-11-09 02:49:03,942 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 452 transitions, 5905 flow [2024-11-09 02:49:04,052 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 452 transitions, 5545 flow, removed 151 selfloop flow, removed 3 redundant places. [2024-11-09 02:49:04,059 INFO L231 Difference]: Finished difference. Result has 114 places, 368 transitions, 4509 flow [2024-11-09 02:49:04,060 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=3355, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=318, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=164, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4509, PETRI_PLACES=114, PETRI_TRANSITIONS=368} [2024-11-09 02:49:04,060 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 85 predicate places. [2024-11-09 02:49:04,060 INFO L471 AbstractCegarLoop]: Abstraction has has 114 places, 368 transitions, 4509 flow [2024-11-09 02:49:04,060 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 7.315789473684211) internal successors, (139), 19 states have internal predecessors, (139), 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 02:49:04,060 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:49:04,061 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] [2024-11-09 02:49:04,077 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-09 02:49:04,261 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-09 02:49:04,261 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 02:49:04,262 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:49:04,262 INFO L85 PathProgramCache]: Analyzing trace with hash 1084980243, now seen corresponding path program 2 times [2024-11-09 02:49:04,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:49:04,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670387224] [2024-11-09 02:49:04,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:49:04,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:49:04,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:49:04,677 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:49:04,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:49:04,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670387224] [2024-11-09 02:49:04,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670387224] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:49:04,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1393566418] [2024-11-09 02:49:04,677 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 02:49:04,678 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:49:04,678 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:49:04,679 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:49:04,681 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-09 02:49:04,753 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 02:49:04,753 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:49:04,755 INFO L255 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-09 02:49:04,757 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:49:04,786 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-09 02:49:05,133 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-09 02:49:05,168 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:49:05,169 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:49:05,454 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 02:49:05,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1393566418] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:49:05,454 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:49:05,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10, 8] total 24 [2024-11-09 02:49:05,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698651836] [2024-11-09 02:49:05,455 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:49:05,455 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-09 02:49:05,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:49:05,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-09 02:49:05,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=496, Unknown=0, NotChecked=0, Total=600 [2024-11-09 02:49:05,456 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2024-11-09 02:49:05,457 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 368 transitions, 4509 flow. Second operand has 25 states, 25 states have (on average 6.52) internal successors, (163), 25 states have internal predecessors, (163), 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 02:49:05,457 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:49:05,457 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2024-11-09 02:49:05,457 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:49:06,772 INFO L124 PetriNetUnfolderBase]: 2149/3099 cut-off events. [2024-11-09 02:49:06,772 INFO L125 PetriNetUnfolderBase]: For 17583/17583 co-relation queries the response was YES. [2024-11-09 02:49:06,781 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19194 conditions, 3099 events. 2149/3099 cut-off events. For 17583/17583 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 13716 event pairs, 197 based on Foata normal form. 2/3101 useless extension candidates. Maximal degree in co-relation 17988. Up to 2587 conditions per place. [2024-11-09 02:49:06,798 INFO L140 encePairwiseOnDemand]: 15/27 looper letters, 372 selfloop transitions, 165 changer transitions 2/540 dead transitions. [2024-11-09 02:49:06,798 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 540 transitions, 7190 flow [2024-11-09 02:49:06,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-09 02:49:06,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-11-09 02:49:06,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 263 transitions. [2024-11-09 02:49:06,800 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4058641975308642 [2024-11-09 02:49:06,801 INFO L175 Difference]: Start difference. First operand has 114 places, 368 transitions, 4509 flow. Second operand 24 states and 263 transitions. [2024-11-09 02:49:06,801 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 540 transitions, 7190 flow [2024-11-09 02:49:06,975 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 540 transitions, 6800 flow, removed 41 selfloop flow, removed 5 redundant places. [2024-11-09 02:49:06,982 INFO L231 Difference]: Finished difference. Result has 143 places, 440 transitions, 5585 flow [2024-11-09 02:49:06,983 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=4199, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=368, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=5585, PETRI_PLACES=143, PETRI_TRANSITIONS=440} [2024-11-09 02:49:06,983 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 114 predicate places. [2024-11-09 02:49:06,983 INFO L471 AbstractCegarLoop]: Abstraction has has 143 places, 440 transitions, 5585 flow [2024-11-09 02:49:06,983 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 6.52) internal successors, (163), 25 states have internal predecessors, (163), 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 02:49:06,984 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:49:06,984 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] [2024-11-09 02:49:06,996 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-09 02:49:07,184 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-09 02:49:07,184 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 02:49:07,185 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:49:07,185 INFO L85 PathProgramCache]: Analyzing trace with hash 906925894, now seen corresponding path program 2 times [2024-11-09 02:49:07,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:49:07,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670270041] [2024-11-09 02:49:07,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:49:07,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:49:07,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:49:07,569 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:49:07,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:49:07,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670270041] [2024-11-09 02:49:07,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670270041] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:49:07,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1156951043] [2024-11-09 02:49:07,570 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 02:49:07,570 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:49:07,570 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:49:07,572 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:49:07,573 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-09 02:49:07,684 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 02:49:07,685 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:49:07,686 INFO L255 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-09 02:49:07,687 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:49:07,832 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-09 02:49:07,862 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 02:49:07,862 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:49:07,918 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 02:49:07,919 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 21 [2024-11-09 02:49:08,311 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 02:49:08,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1156951043] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:49:08,312 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:49:08,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 5] total 18 [2024-11-09 02:49:08,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481100563] [2024-11-09 02:49:08,312 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:49:08,313 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-09 02:49:08,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:49:08,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-09 02:49:08,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=252, Unknown=0, NotChecked=0, Total=342 [2024-11-09 02:49:08,314 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2024-11-09 02:49:08,314 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 440 transitions, 5585 flow. Second operand has 19 states, 19 states have (on average 7.315789473684211) internal successors, (139), 19 states have internal predecessors, (139), 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 02:49:08,314 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:49:08,314 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2024-11-09 02:49:08,314 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:49:08,945 INFO L124 PetriNetUnfolderBase]: 2552/3650 cut-off events. [2024-11-09 02:49:08,945 INFO L125 PetriNetUnfolderBase]: For 22863/22863 co-relation queries the response was YES. [2024-11-09 02:49:08,959 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23387 conditions, 3650 events. 2552/3650 cut-off events. For 22863/22863 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 16427 event pairs, 254 based on Foata normal form. 1/3651 useless extension candidates. Maximal degree in co-relation 23051. Up to 2972 conditions per place. [2024-11-09 02:49:08,979 INFO L140 encePairwiseOnDemand]: 17/27 looper letters, 395 selfloop transitions, 192 changer transitions 1/589 dead transitions. [2024-11-09 02:49:08,979 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 589 transitions, 8513 flow [2024-11-09 02:49:08,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-09 02:49:08,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-09 02:49:08,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 117 transitions. [2024-11-09 02:49:08,981 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.48148148148148145 [2024-11-09 02:49:08,981 INFO L175 Difference]: Start difference. First operand has 143 places, 440 transitions, 5585 flow. Second operand 9 states and 117 transitions. [2024-11-09 02:49:08,981 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 589 transitions, 8513 flow [2024-11-09 02:49:09,155 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 589 transitions, 8237 flow, removed 59 selfloop flow, removed 8 redundant places. [2024-11-09 02:49:09,162 INFO L231 Difference]: Finished difference. Result has 146 places, 520 transitions, 6996 flow [2024-11-09 02:49:09,162 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=5361, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=440, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=267, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6996, PETRI_PLACES=146, PETRI_TRANSITIONS=520} [2024-11-09 02:49:09,163 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 117 predicate places. [2024-11-09 02:49:09,163 INFO L471 AbstractCegarLoop]: Abstraction has has 146 places, 520 transitions, 6996 flow [2024-11-09 02:49:09,163 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 7.315789473684211) internal successors, (139), 19 states have internal predecessors, (139), 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 02:49:09,163 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:49:09,163 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] [2024-11-09 02:49:09,175 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-09 02:49:09,363 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-09 02:49:09,364 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 02:49:09,364 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:49:09,364 INFO L85 PathProgramCache]: Analyzing trace with hash 488516362, now seen corresponding path program 3 times [2024-11-09 02:49:09,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:49:09,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810883350] [2024-11-09 02:49:09,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:49:09,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:49:09,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:49:09,790 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:49:09,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:49:09,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810883350] [2024-11-09 02:49:09,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [810883350] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:49:09,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [626942330] [2024-11-09 02:49:09,791 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 02:49:09,791 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:49:09,791 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:49:09,792 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:49:09,793 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-09 02:49:09,868 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-09 02:49:09,868 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:49:09,869 INFO L255 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-09 02:49:09,870 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:49:10,052 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-09 02:49:10,082 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 02:49:10,082 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:49:10,149 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 02:49:10,150 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 21 [2024-11-09 02:49:10,600 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 02:49:10,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [626942330] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:49:10,601 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:49:10,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 5] total 18 [2024-11-09 02:49:10,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909982110] [2024-11-09 02:49:10,601 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:49:10,601 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-09 02:49:10,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:49:10,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-09 02:49:10,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=252, Unknown=0, NotChecked=0, Total=342 [2024-11-09 02:49:10,602 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2024-11-09 02:49:10,602 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 520 transitions, 6996 flow. Second operand has 19 states, 19 states have (on average 7.315789473684211) internal successors, (139), 19 states have internal predecessors, (139), 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 02:49:10,603 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:49:10,603 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2024-11-09 02:49:10,603 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:49:11,314 INFO L124 PetriNetUnfolderBase]: 2681/3837 cut-off events. [2024-11-09 02:49:11,314 INFO L125 PetriNetUnfolderBase]: For 27317/27317 co-relation queries the response was YES. [2024-11-09 02:49:11,328 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25619 conditions, 3837 events. 2681/3837 cut-off events. For 27317/27317 co-relation queries the response was YES. Maximal size of possible extension queue 221. Compared 17450 event pairs, 264 based on Foata normal form. 1/3838 useless extension candidates. Maximal degree in co-relation 25300. Up to 3332 conditions per place. [2024-11-09 02:49:11,346 INFO L140 encePairwiseOnDemand]: 17/27 looper letters, 435 selfloop transitions, 140 changer transitions 1/577 dead transitions. [2024-11-09 02:49:11,347 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 577 transitions, 8710 flow [2024-11-09 02:49:11,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-09 02:49:11,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-09 02:49:11,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 115 transitions. [2024-11-09 02:49:11,349 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4732510288065844 [2024-11-09 02:49:11,349 INFO L175 Difference]: Start difference. First operand has 146 places, 520 transitions, 6996 flow. Second operand 9 states and 115 transitions. [2024-11-09 02:49:11,349 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 577 transitions, 8710 flow [2024-11-09 02:49:11,561 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 577 transitions, 8463 flow, removed 37 selfloop flow, removed 4 redundant places. [2024-11-09 02:49:11,569 INFO L231 Difference]: Finished difference. Result has 152 places, 527 transitions, 7154 flow [2024-11-09 02:49:11,570 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=6749, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=520, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=135, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=382, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7154, PETRI_PLACES=152, PETRI_TRANSITIONS=527} [2024-11-09 02:49:11,570 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 123 predicate places. [2024-11-09 02:49:11,570 INFO L471 AbstractCegarLoop]: Abstraction has has 152 places, 527 transitions, 7154 flow [2024-11-09 02:49:11,571 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 7.315789473684211) internal successors, (139), 19 states have internal predecessors, (139), 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 02:49:11,571 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:49:11,571 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] [2024-11-09 02:49:11,585 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-09 02:49:11,771 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-09 02:49:11,771 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 02:49:11,772 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:49:11,772 INFO L85 PathProgramCache]: Analyzing trace with hash -462631155, now seen corresponding path program 3 times [2024-11-09 02:49:11,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:49:11,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260616558] [2024-11-09 02:49:11,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:49:11,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:49:11,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:49:12,244 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:49:12,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:49:12,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260616558] [2024-11-09 02:49:12,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1260616558] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:49:12,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [479279568] [2024-11-09 02:49:12,245 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 02:49:12,245 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:49:12,245 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:49:12,247 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:49:12,248 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-09 02:49:12,321 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-09 02:49:12,321 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:49:12,323 INFO L255 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-09 02:49:12,324 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:49:12,358 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-09 02:49:12,607 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-09 02:49:12,638 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:49:12,638 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:49:12,874 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 02:49:12,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [479279568] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:49:12,874 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:49:12,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10, 8] total 24 [2024-11-09 02:49:12,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968322141] [2024-11-09 02:49:12,874 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:49:12,875 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-09 02:49:12,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:49:12,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-09 02:49:12,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=493, Unknown=0, NotChecked=0, Total=600 [2024-11-09 02:49:12,876 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2024-11-09 02:49:12,876 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 527 transitions, 7154 flow. Second operand has 25 states, 25 states have (on average 6.52) internal successors, (163), 25 states have internal predecessors, (163), 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 02:49:12,876 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:49:12,876 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2024-11-09 02:49:12,876 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:49:13,964 INFO L124 PetriNetUnfolderBase]: 2848/4083 cut-off events. [2024-11-09 02:49:13,965 INFO L125 PetriNetUnfolderBase]: For 29650/29650 co-relation queries the response was YES. [2024-11-09 02:49:13,979 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27024 conditions, 4083 events. 2848/4083 cut-off events. For 29650/29650 co-relation queries the response was YES. Maximal size of possible extension queue 239. Compared 18916 event pairs, 314 based on Foata normal form. 1/4084 useless extension candidates. Maximal degree in co-relation 26700. Up to 3557 conditions per place. [2024-11-09 02:49:13,994 INFO L140 encePairwiseOnDemand]: 15/27 looper letters, 470 selfloop transitions, 169 changer transitions 1/641 dead transitions. [2024-11-09 02:49:13,994 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 641 transitions, 9505 flow [2024-11-09 02:49:13,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-09 02:49:13,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-11-09 02:49:13,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 247 transitions. [2024-11-09 02:49:13,996 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4158249158249158 [2024-11-09 02:49:13,996 INFO L175 Difference]: Start difference. First operand has 152 places, 527 transitions, 7154 flow. Second operand 22 states and 247 transitions. [2024-11-09 02:49:13,996 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 641 transitions, 9505 flow [2024-11-09 02:49:14,246 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 641 transitions, 9266 flow, removed 27 selfloop flow, removed 5 redundant places. [2024-11-09 02:49:14,256 INFO L231 Difference]: Finished difference. Result has 171 places, 556 transitions, 7657 flow [2024-11-09 02:49:14,256 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=6926, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=527, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=143, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=380, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=7657, PETRI_PLACES=171, PETRI_TRANSITIONS=556} [2024-11-09 02:49:14,257 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 142 predicate places. [2024-11-09 02:49:14,257 INFO L471 AbstractCegarLoop]: Abstraction has has 171 places, 556 transitions, 7657 flow [2024-11-09 02:49:14,257 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 6.52) internal successors, (163), 25 states have internal predecessors, (163), 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 02:49:14,257 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:49:14,257 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] [2024-11-09 02:49:14,270 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-09 02:49:14,457 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-09 02:49:14,458 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 02:49:14,458 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:49:14,458 INFO L85 PathProgramCache]: Analyzing trace with hash 2090506375, now seen corresponding path program 4 times [2024-11-09 02:49:14,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:49:14,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375467285] [2024-11-09 02:49:14,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:49:14,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:49:14,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:49:15,031 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:49:15,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:49:15,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375467285] [2024-11-09 02:49:15,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375467285] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:49:15,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1023956311] [2024-11-09 02:49:15,033 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 02:49:15,033 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:49:15,033 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:49:15,036 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:49:15,038 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-09 02:49:15,118 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 02:49:15,118 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:49:15,120 INFO L255 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-09 02:49:15,122 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:49:15,158 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-09 02:49:15,399 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-09 02:49:15,433 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:49:15,433 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:49:15,830 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 34 [2024-11-09 02:49:15,848 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 02:49:15,849 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 94 treesize of output 86 [2024-11-09 02:49:16,909 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:49:16,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1023956311] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:49:16,909 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:49:16,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 22 [2024-11-09 02:49:16,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548477836] [2024-11-09 02:49:16,909 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:49:16,910 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-09 02:49:16,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:49:16,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-09 02:49:16,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=411, Unknown=0, NotChecked=0, Total=506 [2024-11-09 02:49:16,911 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2024-11-09 02:49:16,911 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 556 transitions, 7657 flow. Second operand has 23 states, 23 states have (on average 6.739130434782608) internal successors, (155), 23 states have internal predecessors, (155), 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 02:49:16,911 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:49:16,911 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2024-11-09 02:49:16,911 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:49:18,275 INFO L124 PetriNetUnfolderBase]: 3283/4678 cut-off events. [2024-11-09 02:49:18,275 INFO L125 PetriNetUnfolderBase]: For 35723/35723 co-relation queries the response was YES. [2024-11-09 02:49:18,297 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31302 conditions, 4678 events. 3283/4678 cut-off events. For 35723/35723 co-relation queries the response was YES. Maximal size of possible extension queue 268. Compared 21925 event pairs, 337 based on Foata normal form. 2/4680 useless extension candidates. Maximal degree in co-relation 30965. Up to 3695 conditions per place. [2024-11-09 02:49:18,316 INFO L140 encePairwiseOnDemand]: 16/27 looper letters, 496 selfloop transitions, 208 changer transitions 2/707 dead transitions. [2024-11-09 02:49:18,316 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 707 transitions, 10804 flow [2024-11-09 02:49:18,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-09 02:49:18,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-09 02:49:18,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 196 transitions. [2024-11-09 02:49:18,318 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4839506172839506 [2024-11-09 02:49:18,318 INFO L175 Difference]: Start difference. First operand has 171 places, 556 transitions, 7657 flow. Second operand 15 states and 196 transitions. [2024-11-09 02:49:18,318 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 707 transitions, 10804 flow [2024-11-09 02:49:18,514 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 707 transitions, 10518 flow, removed 47 selfloop flow, removed 7 redundant places. [2024-11-09 02:49:18,523 INFO L231 Difference]: Finished difference. Result has 186 places, 614 transitions, 8847 flow [2024-11-09 02:49:18,523 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=7398, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=556, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=158, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=380, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=8847, PETRI_PLACES=186, PETRI_TRANSITIONS=614} [2024-11-09 02:49:18,524 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 157 predicate places. [2024-11-09 02:49:18,524 INFO L471 AbstractCegarLoop]: Abstraction has has 186 places, 614 transitions, 8847 flow [2024-11-09 02:49:18,525 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 6.739130434782608) internal successors, (155), 23 states have internal predecessors, (155), 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 02:49:18,525 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:49:18,525 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] [2024-11-09 02:49:18,545 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-09 02:49:18,725 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:49:18,726 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 02:49:18,726 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:49:18,726 INFO L85 PathProgramCache]: Analyzing trace with hash -1013399012, now seen corresponding path program 4 times [2024-11-09 02:49:18,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:49:18,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174875471] [2024-11-09 02:49:18,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:49:18,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:49:18,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:49:19,148 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:49:19,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:49:19,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174875471] [2024-11-09 02:49:19,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174875471] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:49:19,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1459249328] [2024-11-09 02:49:19,149 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 02:49:19,149 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:49:19,149 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:49:19,151 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:49:19,154 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-09 02:49:19,237 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 02:49:19,237 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:49:19,239 INFO L255 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-09 02:49:19,240 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:49:19,384 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-09 02:49:19,455 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 02:49:19,455 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:49:19,528 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 02:49:19,528 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 21 [2024-11-09 02:49:19,813 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 02:49:19,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1459249328] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:49:19,814 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:49:19,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 5] total 16 [2024-11-09 02:49:19,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428795756] [2024-11-09 02:49:19,814 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:49:19,815 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-09 02:49:19,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:49:19,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-09 02:49:19,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=207, Unknown=0, NotChecked=0, Total=272 [2024-11-09 02:49:19,817 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2024-11-09 02:49:19,817 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 614 transitions, 8847 flow. Second operand has 17 states, 17 states have (on average 7.294117647058823) internal successors, (124), 17 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 02:49:19,817 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:49:19,817 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2024-11-09 02:49:19,818 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:49:20,717 INFO L124 PetriNetUnfolderBase]: 3412/4865 cut-off events. [2024-11-09 02:49:20,717 INFO L125 PetriNetUnfolderBase]: For 43009/43009 co-relation queries the response was YES. [2024-11-09 02:49:20,735 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34449 conditions, 4865 events. 3412/4865 cut-off events. For 43009/43009 co-relation queries the response was YES. Maximal size of possible extension queue 280. Compared 23014 event pairs, 372 based on Foata normal form. 1/4866 useless extension candidates. Maximal degree in co-relation 34087. Up to 4344 conditions per place. [2024-11-09 02:49:20,754 INFO L140 encePairwiseOnDemand]: 17/27 looper letters, 505 selfloop transitions, 161 changer transitions 1/668 dead transitions. [2024-11-09 02:49:20,755 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 668 transitions, 10806 flow [2024-11-09 02:49:20,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-09 02:49:20,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-09 02:49:20,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 112 transitions. [2024-11-09 02:49:20,756 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4609053497942387 [2024-11-09 02:49:20,756 INFO L175 Difference]: Start difference. First operand has 186 places, 614 transitions, 8847 flow. Second operand 9 states and 112 transitions. [2024-11-09 02:49:20,756 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 668 transitions, 10806 flow [2024-11-09 02:49:21,051 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 668 transitions, 10397 flow, removed 178 selfloop flow, removed 3 redundant places. [2024-11-09 02:49:21,059 INFO L231 Difference]: Finished difference. Result has 193 places, 621 transitions, 8915 flow [2024-11-09 02:49:21,060 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=8446, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=614, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=156, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=455, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8915, PETRI_PLACES=193, PETRI_TRANSITIONS=621} [2024-11-09 02:49:21,060 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 164 predicate places. [2024-11-09 02:49:21,060 INFO L471 AbstractCegarLoop]: Abstraction has has 193 places, 621 transitions, 8915 flow [2024-11-09 02:49:21,060 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 7.294117647058823) internal successors, (124), 17 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 02:49:21,061 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:49:21,061 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] [2024-11-09 02:49:21,073 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-11-09 02:49:21,261 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:49:21,261 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 02:49:21,262 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:49:21,262 INFO L85 PathProgramCache]: Analyzing trace with hash -1664739096, now seen corresponding path program 5 times [2024-11-09 02:49:21,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:49:21,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285714950] [2024-11-09 02:49:21,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:49:21,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:49:21,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:49:21,596 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:49:21,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:49:21,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285714950] [2024-11-09 02:49:21,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [285714950] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:49:21,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1459625945] [2024-11-09 02:49:21,597 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-09 02:49:21,597 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:49:21,597 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:49:21,599 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:49:21,601 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-09 02:49:21,669 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 02:49:21,669 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:49:21,670 INFO L255 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-09 02:49:21,670 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:49:21,761 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-09 02:49:21,821 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 02:49:21,822 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:49:21,895 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 02:49:21,896 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 21 [2024-11-09 02:49:22,124 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 02:49:22,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1459625945] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:49:22,124 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:49:22,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 5] total 16 [2024-11-09 02:49:22,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893873804] [2024-11-09 02:49:22,124 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:49:22,126 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-09 02:49:22,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:49:22,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-09 02:49:22,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2024-11-09 02:49:22,127 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2024-11-09 02:49:22,127 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 621 transitions, 8915 flow. Second operand has 17 states, 17 states have (on average 7.294117647058823) internal successors, (124), 17 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 02:49:22,128 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:49:22,128 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2024-11-09 02:49:22,128 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:49:22,987 INFO L124 PetriNetUnfolderBase]: 3579/5106 cut-off events. [2024-11-09 02:49:22,988 INFO L125 PetriNetUnfolderBase]: For 44842/44842 co-relation queries the response was YES. [2024-11-09 02:49:23,008 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35471 conditions, 5106 events. 3579/5106 cut-off events. For 44842/44842 co-relation queries the response was YES. Maximal size of possible extension queue 292. Compared 24410 event pairs, 331 based on Foata normal form. 1/5107 useless extension candidates. Maximal degree in co-relation 35109. Up to 4433 conditions per place. [2024-11-09 02:49:23,026 INFO L140 encePairwiseOnDemand]: 17/27 looper letters, 517 selfloop transitions, 162 changer transitions 1/681 dead transitions. [2024-11-09 02:49:23,026 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 681 transitions, 10989 flow [2024-11-09 02:49:23,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-09 02:49:23,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-09 02:49:23,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 113 transitions. [2024-11-09 02:49:23,027 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46502057613168724 [2024-11-09 02:49:23,027 INFO L175 Difference]: Start difference. First operand has 193 places, 621 transitions, 8915 flow. Second operand 9 states and 113 transitions. [2024-11-09 02:49:23,027 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 681 transitions, 10989 flow [2024-11-09 02:49:23,319 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 681 transitions, 10704 flow, removed 44 selfloop flow, removed 5 redundant places. [2024-11-09 02:49:23,328 INFO L231 Difference]: Finished difference. Result has 199 places, 633 transitions, 9228 flow [2024-11-09 02:49:23,328 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=8630, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=621, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=153, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=463, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9228, PETRI_PLACES=199, PETRI_TRANSITIONS=633} [2024-11-09 02:49:23,328 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 170 predicate places. [2024-11-09 02:49:23,328 INFO L471 AbstractCegarLoop]: Abstraction has has 199 places, 633 transitions, 9228 flow [2024-11-09 02:49:23,329 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 7.294117647058823) internal successors, (124), 17 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 02:49:23,329 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:49:23,329 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] [2024-11-09 02:49:23,341 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-11-09 02:49:23,529 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:49:23,529 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 02:49:23,530 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:49:23,530 INFO L85 PathProgramCache]: Analyzing trace with hash -166591874, now seen corresponding path program 6 times [2024-11-09 02:49:23,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:49:23,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877194290] [2024-11-09 02:49:23,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:49:23,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:49:23,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:49:23,869 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:49:23,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:49:23,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877194290] [2024-11-09 02:49:23,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1877194290] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:49:23,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1968762968] [2024-11-09 02:49:23,870 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-09 02:49:23,870 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:49:23,870 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:49:23,872 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:49:23,873 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-09 02:49:23,947 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-09 02:49:23,947 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:49:23,948 INFO L255 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-09 02:49:23,950 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:49:24,092 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-09 02:49:24,115 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 02:49:24,115 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:49:24,156 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 02:49:24,156 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 21 [2024-11-09 02:49:24,446 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 02:49:24,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1968762968] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:49:24,446 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:49:24,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 5] total 18 [2024-11-09 02:49:24,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322149242] [2024-11-09 02:49:24,446 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:49:24,447 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-09 02:49:24,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:49:24,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-09 02:49:24,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=252, Unknown=0, NotChecked=0, Total=342 [2024-11-09 02:49:24,447 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2024-11-09 02:49:24,448 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 633 transitions, 9228 flow. Second operand has 19 states, 19 states have (on average 7.315789473684211) internal successors, (139), 19 states have internal predecessors, (139), 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 02:49:24,448 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:49:24,448 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2024-11-09 02:49:24,448 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:49:25,333 INFO L124 PetriNetUnfolderBase]: 3670/5239 cut-off events. [2024-11-09 02:49:25,333 INFO L125 PetriNetUnfolderBase]: For 48706/48706 co-relation queries the response was YES. [2024-11-09 02:49:25,353 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36823 conditions, 5239 events. 3670/5239 cut-off events. For 48706/48706 co-relation queries the response was YES. Maximal size of possible extension queue 299. Compared 25171 event pairs, 465 based on Foata normal form. 1/5240 useless extension candidates. Maximal degree in co-relation 36455. Up to 4545 conditions per place. [2024-11-09 02:49:25,373 INFO L140 encePairwiseOnDemand]: 17/27 looper letters, 499 selfloop transitions, 214 changer transitions 1/715 dead transitions. [2024-11-09 02:49:25,373 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 715 transitions, 11685 flow [2024-11-09 02:49:25,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-09 02:49:25,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-09 02:49:25,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 114 transitions. [2024-11-09 02:49:25,375 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4691358024691358 [2024-11-09 02:49:25,375 INFO L175 Difference]: Start difference. First operand has 199 places, 633 transitions, 9228 flow. Second operand 9 states and 114 transitions. [2024-11-09 02:49:25,375 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 715 transitions, 11685 flow [2024-11-09 02:49:25,671 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 715 transitions, 11389 flow, removed 58 selfloop flow, removed 4 redundant places. [2024-11-09 02:49:25,682 INFO L231 Difference]: Finished difference. Result has 205 places, 649 transitions, 9770 flow [2024-11-09 02:49:25,682 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=8932, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=633, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=198, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=419, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9770, PETRI_PLACES=205, PETRI_TRANSITIONS=649} [2024-11-09 02:49:25,683 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 176 predicate places. [2024-11-09 02:49:25,683 INFO L471 AbstractCegarLoop]: Abstraction has has 205 places, 649 transitions, 9770 flow [2024-11-09 02:49:25,683 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 7.315789473684211) internal successors, (139), 19 states have internal predecessors, (139), 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 02:49:25,683 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:49:25,683 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] [2024-11-09 02:49:25,696 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-09 02:49:25,884 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:49:25,884 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 02:49:25,885 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:49:25,885 INFO L85 PathProgramCache]: Analyzing trace with hash -2046509819, now seen corresponding path program 5 times [2024-11-09 02:49:25,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:49:25,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575428207] [2024-11-09 02:49:25,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:49:25,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:49:25,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:49:26,190 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:49:26,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:49:26,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575428207] [2024-11-09 02:49:26,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [575428207] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:49:26,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1608231604] [2024-11-09 02:49:26,191 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-09 02:49:26,191 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:49:26,192 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:49:26,193 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:49:26,195 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-09 02:49:26,273 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 02:49:26,273 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:49:26,275 INFO L255 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-09 02:49:26,276 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:49:26,311 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-09 02:49:26,520 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-09 02:49:26,547 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:49:26,547 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:49:26,803 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 34 [2024-11-09 02:49:26,810 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-09 02:49:26,811 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 94 treesize of output 86 [2024-11-09 02:49:27,456 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:49:27,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1608231604] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:49:27,456 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:49:27,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 22 [2024-11-09 02:49:27,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851854911] [2024-11-09 02:49:27,456 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:49:27,457 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-09 02:49:27,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:49:27,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-09 02:49:27,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=413, Unknown=0, NotChecked=0, Total=506 [2024-11-09 02:49:27,458 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2024-11-09 02:49:27,458 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 649 transitions, 9770 flow. Second operand has 23 states, 23 states have (on average 6.739130434782608) internal successors, (155), 23 states have internal predecessors, (155), 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 02:49:27,458 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:49:27,458 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2024-11-09 02:49:27,458 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:49:28,586 INFO L124 PetriNetUnfolderBase]: 3897/5570 cut-off events. [2024-11-09 02:49:28,586 INFO L125 PetriNetUnfolderBase]: For 55421/55421 co-relation queries the response was YES. [2024-11-09 02:49:28,614 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39658 conditions, 5570 events. 3897/5570 cut-off events. For 55421/55421 co-relation queries the response was YES. Maximal size of possible extension queue 319. Compared 27057 event pairs, 482 based on Foata normal form. 2/5572 useless extension candidates. Maximal degree in co-relation 39284. Up to 4792 conditions per place. [2024-11-09 02:49:28,638 INFO L140 encePairwiseOnDemand]: 17/27 looper letters, 574 selfloop transitions, 176 changer transitions 2/753 dead transitions. [2024-11-09 02:49:28,638 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 753 transitions, 12506 flow [2024-11-09 02:49:28,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-09 02:49:28,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-09 02:49:28,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 172 transitions. [2024-11-09 02:49:28,639 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.455026455026455 [2024-11-09 02:49:28,639 INFO L175 Difference]: Start difference. First operand has 205 places, 649 transitions, 9770 flow. Second operand 14 states and 172 transitions. [2024-11-09 02:49:28,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 753 transitions, 12506 flow [2024-11-09 02:49:29,078 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 753 transitions, 11958 flow, removed 107 selfloop flow, removed 6 redundant places. [2024-11-09 02:49:29,088 INFO L231 Difference]: Finished difference. Result has 216 places, 682 transitions, 10106 flow [2024-11-09 02:49:29,088 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=9222, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=649, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=151, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=491, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=10106, PETRI_PLACES=216, PETRI_TRANSITIONS=682} [2024-11-09 02:49:29,089 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 187 predicate places. [2024-11-09 02:49:29,089 INFO L471 AbstractCegarLoop]: Abstraction has has 216 places, 682 transitions, 10106 flow [2024-11-09 02:49:29,089 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 6.739130434782608) internal successors, (155), 23 states have internal predecessors, (155), 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 02:49:29,089 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:49:29,089 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] [2024-11-09 02:49:29,102 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-11-09 02:49:29,289 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:49:29,290 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 02:49:29,290 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:49:29,290 INFO L85 PathProgramCache]: Analyzing trace with hash -1498972727, now seen corresponding path program 6 times [2024-11-09 02:49:29,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:49:29,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377574382] [2024-11-09 02:49:29,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:49:29,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:49:29,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:49:29,723 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:49:29,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:49:29,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377574382] [2024-11-09 02:49:29,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377574382] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:49:29,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [677068132] [2024-11-09 02:49:29,723 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-09 02:49:29,723 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:49:29,723 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:49:29,724 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:49:29,726 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-09 02:49:29,800 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-09 02:49:29,800 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:49:29,801 INFO L255 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-09 02:49:29,803 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:49:29,826 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-09 02:49:30,029 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-09 02:49:30,050 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:49:30,050 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:49:30,284 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 02:49:30,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [677068132] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:49:30,284 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:49:30,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10, 8] total 24 [2024-11-09 02:49:30,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685487763] [2024-11-09 02:49:30,284 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:49:30,285 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-09 02:49:30,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:49:30,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-09 02:49:30,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=500, Unknown=0, NotChecked=0, Total=600 [2024-11-09 02:49:30,287 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2024-11-09 02:49:30,287 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 682 transitions, 10106 flow. Second operand has 25 states, 25 states have (on average 6.52) internal successors, (163), 25 states have internal predecessors, (163), 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 02:49:30,287 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:49:30,287 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2024-11-09 02:49:30,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:49:32,186 INFO L124 PetriNetUnfolderBase]: 4134/5905 cut-off events. [2024-11-09 02:49:32,187 INFO L125 PetriNetUnfolderBase]: For 57767/57767 co-relation queries the response was YES. [2024-11-09 02:49:32,217 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41955 conditions, 5905 events. 4134/5905 cut-off events. For 57767/57767 co-relation queries the response was YES. Maximal size of possible extension queue 338. Compared 29019 event pairs, 438 based on Foata normal form. 1/5906 useless extension candidates. Maximal degree in co-relation 41571. Up to 5172 conditions per place. [2024-11-09 02:49:32,247 INFO L140 encePairwiseOnDemand]: 15/27 looper letters, 585 selfloop transitions, 217 changer transitions 2/805 dead transitions. [2024-11-09 02:49:32,248 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 805 transitions, 12998 flow [2024-11-09 02:49:32,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-09 02:49:32,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2024-11-09 02:49:32,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 318 transitions. [2024-11-09 02:49:32,250 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3925925925925926 [2024-11-09 02:49:32,250 INFO L175 Difference]: Start difference. First operand has 216 places, 682 transitions, 10106 flow. Second operand 30 states and 318 transitions. [2024-11-09 02:49:32,250 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 805 transitions, 12998 flow [2024-11-09 02:49:32,665 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 805 transitions, 12691 flow, removed 83 selfloop flow, removed 5 redundant places. [2024-11-09 02:49:32,675 INFO L231 Difference]: Finished difference. Result has 247 places, 708 transitions, 10753 flow [2024-11-09 02:49:32,676 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=9844, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=682, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=192, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=471, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=10753, PETRI_PLACES=247, PETRI_TRANSITIONS=708} [2024-11-09 02:49:32,676 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 218 predicate places. [2024-11-09 02:49:32,676 INFO L471 AbstractCegarLoop]: Abstraction has has 247 places, 708 transitions, 10753 flow [2024-11-09 02:49:32,677 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 6.52) internal successors, (163), 25 states have internal predecessors, (163), 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 02:49:32,677 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:49:32,677 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:49:32,692 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-11-09 02:49:32,877 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:49:32,877 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 02:49:32,878 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:49:32,878 INFO L85 PathProgramCache]: Analyzing trace with hash 549068580, now seen corresponding path program 7 times [2024-11-09 02:49:32,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:49:32,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359620706] [2024-11-09 02:49:32,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:49:32,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:49:32,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:49:32,982 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:49:32,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:49:32,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359620706] [2024-11-09 02:49:32,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359620706] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:49:32,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [998054339] [2024-11-09 02:49:32,983 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-09 02:49:32,983 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:49:32,983 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:49:32,985 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:49:32,986 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-09 02:49:33,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:49:33,062 INFO L255 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 02:49:33,063 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:49:33,134 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:49:33,135 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:49:33,197 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:49:33,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [998054339] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:49:33,198 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:49:33,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 14 [2024-11-09 02:49:33,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058195079] [2024-11-09 02:49:33,198 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:49:33,198 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-09 02:49:33,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:49:33,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-09 02:49:33,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2024-11-09 02:49:33,199 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2024-11-09 02:49:33,199 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 708 transitions, 10753 flow. Second operand has 15 states, 15 states have (on average 7.2) internal successors, (108), 15 states have internal predecessors, (108), 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 02:49:33,199 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:49:33,200 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2024-11-09 02:49:33,200 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:49:34,313 INFO L124 PetriNetUnfolderBase]: 4851/6947 cut-off events. [2024-11-09 02:49:34,314 INFO L125 PetriNetUnfolderBase]: For 84500/84500 co-relation queries the response was YES. [2024-11-09 02:49:34,350 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50080 conditions, 6947 events. 4851/6947 cut-off events. For 84500/84500 co-relation queries the response was YES. Maximal size of possible extension queue 393. Compared 35332 event pairs, 1272 based on Foata normal form. 242/7189 useless extension candidates. Maximal degree in co-relation 49630. Up to 4721 conditions per place. [2024-11-09 02:49:34,378 INFO L140 encePairwiseOnDemand]: 21/27 looper letters, 759 selfloop transitions, 62 changer transitions 0/822 dead transitions. [2024-11-09 02:49:34,378 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 822 transitions, 13766 flow [2024-11-09 02:49:34,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-09 02:49:34,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-09 02:49:34,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 101 transitions. [2024-11-09 02:49:34,379 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4675925925925926 [2024-11-09 02:49:34,379 INFO L175 Difference]: Start difference. First operand has 247 places, 708 transitions, 10753 flow. Second operand 8 states and 101 transitions. [2024-11-09 02:49:34,380 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 822 transitions, 13766 flow [2024-11-09 02:49:34,949 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 822 transitions, 13296 flow, removed 124 selfloop flow, removed 11 redundant places. [2024-11-09 02:49:34,959 INFO L231 Difference]: Finished difference. Result has 245 places, 679 transitions, 10181 flow [2024-11-09 02:49:34,960 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=9641, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=657, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=595, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=10181, PETRI_PLACES=245, PETRI_TRANSITIONS=679} [2024-11-09 02:49:34,960 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 216 predicate places. [2024-11-09 02:49:34,960 INFO L471 AbstractCegarLoop]: Abstraction has has 245 places, 679 transitions, 10181 flow [2024-11-09 02:49:34,960 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 7.2) internal successors, (108), 15 states have internal predecessors, (108), 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 02:49:34,960 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:49:34,960 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:49:34,973 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-09 02:49:35,161 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-11-09 02:49:35,161 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 02:49:35,161 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:49:35,162 INFO L85 PathProgramCache]: Analyzing trace with hash -432103725, now seen corresponding path program 8 times [2024-11-09 02:49:35,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:49:35,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762445206] [2024-11-09 02:49:35,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:49:35,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:49:35,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:49:35,241 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 02:49:35,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:49:35,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762445206] [2024-11-09 02:49:35,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762445206] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:49:35,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [132567558] [2024-11-09 02:49:35,241 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 02:49:35,241 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:49:35,242 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:49:35,242 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:49:35,243 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-09 02:49:35,308 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 02:49:35,308 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:49:35,309 INFO L255 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 02:49:35,310 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:49:35,358 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 02:49:35,358 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:49:35,409 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 02:49:35,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [132567558] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:49:35,409 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:49:35,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2024-11-09 02:49:35,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540943721] [2024-11-09 02:49:35,410 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:49:35,410 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-09 02:49:35,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:49:35,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-09 02:49:35,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2024-11-09 02:49:35,411 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2024-11-09 02:49:35,411 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 679 transitions, 10181 flow. Second operand has 14 states, 14 states have (on average 6.857142857142857) internal successors, (96), 14 states have internal predecessors, (96), 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 02:49:35,411 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:49:35,411 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2024-11-09 02:49:35,411 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:49:36,372 INFO L124 PetriNetUnfolderBase]: 4264/6259 cut-off events. [2024-11-09 02:49:36,372 INFO L125 PetriNetUnfolderBase]: For 80601/80601 co-relation queries the response was YES. [2024-11-09 02:49:36,411 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45331 conditions, 6259 events. 4264/6259 cut-off events. For 80601/80601 co-relation queries the response was YES. Maximal size of possible extension queue 374. Compared 33060 event pairs, 1034 based on Foata normal form. 356/6615 useless extension candidates. Maximal degree in co-relation 44892. Up to 2220 conditions per place. [2024-11-09 02:49:36,436 INFO L140 encePairwiseOnDemand]: 21/27 looper letters, 684 selfloop transitions, 73 changer transitions 0/758 dead transitions. [2024-11-09 02:49:36,436 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 758 transitions, 12454 flow [2024-11-09 02:49:36,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 02:49:36,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-09 02:49:36,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 95 transitions. [2024-11-09 02:49:36,437 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5026455026455027 [2024-11-09 02:49:36,437 INFO L175 Difference]: Start difference. First operand has 245 places, 679 transitions, 10181 flow. Second operand 7 states and 95 transitions. [2024-11-09 02:49:36,437 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 758 transitions, 12454 flow [2024-11-09 02:49:36,894 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 758 transitions, 12389 flow, removed 23 selfloop flow, removed 5 redundant places. [2024-11-09 02:49:36,905 INFO L231 Difference]: Finished difference. Result has 247 places, 647 transitions, 9936 flow [2024-11-09 02:49:36,905 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=9612, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=637, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=564, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=9936, PETRI_PLACES=247, PETRI_TRANSITIONS=647} [2024-11-09 02:49:36,906 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 218 predicate places. [2024-11-09 02:49:36,906 INFO L471 AbstractCegarLoop]: Abstraction has has 247 places, 647 transitions, 9936 flow [2024-11-09 02:49:36,906 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.857142857142857) internal successors, (96), 14 states have internal predecessors, (96), 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 02:49:36,906 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:49:36,907 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:49:36,924 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2024-11-09 02:49:37,107 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-11-09 02:49:37,108 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 02:49:37,108 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:49:37,108 INFO L85 PathProgramCache]: Analyzing trace with hash -1449287287, now seen corresponding path program 7 times [2024-11-09 02:49:37,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:49:37,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069094719] [2024-11-09 02:49:37,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:49:37,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:49:37,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:49:37,202 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:49:37,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:49:37,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069094719] [2024-11-09 02:49:37,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069094719] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:49:37,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [42337079] [2024-11-09 02:49:37,202 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-09 02:49:37,203 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:49:37,203 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:49:37,205 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:49:37,206 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-09 02:49:37,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:49:37,283 INFO L255 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-09 02:49:37,284 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:49:37,355 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:49:37,355 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:49:37,407 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:49:37,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [42337079] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:49:37,407 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:49:37,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2024-11-09 02:49:37,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525831620] [2024-11-09 02:49:37,408 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:49:37,408 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-09 02:49:37,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:49:37,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-09 02:49:37,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2024-11-09 02:49:37,409 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2024-11-09 02:49:37,409 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 647 transitions, 9936 flow. Second operand has 15 states, 15 states have (on average 6.533333333333333) internal successors, (98), 15 states have internal predecessors, (98), 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 02:49:37,409 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:49:37,409 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2024-11-09 02:49:37,409 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:49:38,406 INFO L124 PetriNetUnfolderBase]: 3949/5868 cut-off events. [2024-11-09 02:49:38,406 INFO L125 PetriNetUnfolderBase]: For 73446/73446 co-relation queries the response was YES. [2024-11-09 02:49:38,437 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43567 conditions, 5868 events. 3949/5868 cut-off events. For 73446/73446 co-relation queries the response was YES. Maximal size of possible extension queue 363. Compared 31576 event pairs, 987 based on Foata normal form. 164/6032 useless extension candidates. Maximal degree in co-relation 43146. Up to 2220 conditions per place. [2024-11-09 02:49:38,458 INFO L140 encePairwiseOnDemand]: 21/27 looper letters, 570 selfloop transitions, 136 changer transitions 72/779 dead transitions. [2024-11-09 02:49:38,458 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 779 transitions, 12944 flow [2024-11-09 02:49:38,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 02:49:38,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-09 02:49:38,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 94 transitions. [2024-11-09 02:49:38,459 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4973544973544973 [2024-11-09 02:49:38,459 INFO L175 Difference]: Start difference. First operand has 247 places, 647 transitions, 9936 flow. Second operand 7 states and 94 transitions. [2024-11-09 02:49:38,459 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 779 transitions, 12944 flow [2024-11-09 02:49:38,931 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 779 transitions, 12663 flow, removed 44 selfloop flow, removed 6 redundant places. [2024-11-09 02:49:38,943 INFO L231 Difference]: Finished difference. Result has 250 places, 597 transitions, 9510 flow [2024-11-09 02:49:38,943 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=9670, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=645, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=509, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=9510, PETRI_PLACES=250, PETRI_TRANSITIONS=597} [2024-11-09 02:49:38,944 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 221 predicate places. [2024-11-09 02:49:38,944 INFO L471 AbstractCegarLoop]: Abstraction has has 250 places, 597 transitions, 9510 flow [2024-11-09 02:49:38,944 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.533333333333333) internal successors, (98), 15 states have internal predecessors, (98), 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 02:49:38,944 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:49:38,944 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:49:38,960 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2024-11-09 02:49:39,145 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-11-09 02:49:39,145 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 02:49:39,145 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:49:39,145 INFO L85 PathProgramCache]: Analyzing trace with hash 634867988, now seen corresponding path program 1 times [2024-11-09 02:49:39,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:49:39,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735175631] [2024-11-09 02:49:39,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:49:39,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:49:39,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:49:39,245 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:49:39,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:49:39,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735175631] [2024-11-09 02:49:39,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735175631] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:49:39,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1645800098] [2024-11-09 02:49:39,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:49:39,246 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:49:39,246 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:49:39,248 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:49:39,249 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-09 02:49:39,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:49:39,329 INFO L255 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-09 02:49:39,330 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:49:39,400 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:49:39,401 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:49:39,462 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:49:39,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1645800098] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:49:39,463 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:49:39,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2024-11-09 02:49:39,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333563582] [2024-11-09 02:49:39,463 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:49:39,464 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-09 02:49:39,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:49:39,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-09 02:49:39,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2024-11-09 02:49:39,466 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2024-11-09 02:49:39,466 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 597 transitions, 9510 flow. Second operand has 16 states, 16 states have (on average 6.125) internal successors, (98), 16 states have internal predecessors, (98), 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 02:49:39,466 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:49:39,466 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2024-11-09 02:49:39,467 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:49:40,545 INFO L124 PetriNetUnfolderBase]: 3869/5798 cut-off events. [2024-11-09 02:49:40,546 INFO L125 PetriNetUnfolderBase]: For 78687/78687 co-relation queries the response was YES. [2024-11-09 02:49:40,576 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43965 conditions, 5798 events. 3869/5798 cut-off events. For 78687/78687 co-relation queries the response was YES. Maximal size of possible extension queue 372. Compared 31644 event pairs, 863 based on Foata normal form. 82/5880 useless extension candidates. Maximal degree in co-relation 43551. Up to 2220 conditions per place. [2024-11-09 02:49:40,597 INFO L140 encePairwiseOnDemand]: 18/27 looper letters, 573 selfloop transitions, 127 changer transitions 43/744 dead transitions. [2024-11-09 02:49:40,597 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 744 transitions, 12510 flow [2024-11-09 02:49:40,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-09 02:49:40,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-09 02:49:40,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 134 transitions. [2024-11-09 02:49:40,598 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4962962962962963 [2024-11-09 02:49:40,598 INFO L175 Difference]: Start difference. First operand has 250 places, 597 transitions, 9510 flow. Second operand 10 states and 134 transitions. [2024-11-09 02:49:40,598 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 744 transitions, 12510 flow [2024-11-09 02:49:41,078 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 744 transitions, 12475 flow, removed 14 selfloop flow, removed 3 redundant places. [2024-11-09 02:49:41,089 INFO L231 Difference]: Finished difference. Result has 260 places, 587 transitions, 9684 flow [2024-11-09 02:49:41,090 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=9477, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=597, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=127, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=470, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9684, PETRI_PLACES=260, PETRI_TRANSITIONS=587} [2024-11-09 02:49:41,090 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 231 predicate places. [2024-11-09 02:49:41,090 INFO L471 AbstractCegarLoop]: Abstraction has has 260 places, 587 transitions, 9684 flow [2024-11-09 02:49:41,090 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 6.125) internal successors, (98), 16 states have internal predecessors, (98), 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 02:49:41,090 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:49:41,090 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:49:41,103 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2024-11-09 02:49:41,291 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:49:41,291 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 02:49:41,291 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:49:41,291 INFO L85 PathProgramCache]: Analyzing trace with hash -799816665, now seen corresponding path program 9 times [2024-11-09 02:49:41,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:49:41,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263916204] [2024-11-09 02:49:41,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:49:41,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:49:41,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:49:41,364 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:49:41,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:49:41,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263916204] [2024-11-09 02:49:41,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263916204] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:49:41,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1878953885] [2024-11-09 02:49:41,365 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 02:49:41,365 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:49:41,365 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:49:41,366 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:49:41,367 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-09 02:49:41,435 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-09 02:49:41,435 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:49:41,436 INFO L255 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-09 02:49:41,437 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:49:41,554 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:49:41,554 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:49:41,606 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:49:41,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1878953885] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:49:41,606 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:49:41,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2024-11-09 02:49:41,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830996259] [2024-11-09 02:49:41,607 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:49:41,607 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-09 02:49:41,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:49:41,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-09 02:49:41,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2024-11-09 02:49:41,608 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2024-11-09 02:49:41,608 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 587 transitions, 9684 flow. Second operand has 14 states, 14 states have (on average 7.071428571428571) internal successors, (99), 14 states have internal predecessors, (99), 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 02:49:41,608 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:49:41,608 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2024-11-09 02:49:41,608 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:49:42,389 INFO L124 PetriNetUnfolderBase]: 2743/4178 cut-off events. [2024-11-09 02:49:42,389 INFO L125 PetriNetUnfolderBase]: For 68083/68083 co-relation queries the response was YES. [2024-11-09 02:49:42,409 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33934 conditions, 4178 events. 2743/4178 cut-off events. For 68083/68083 co-relation queries the response was YES. Maximal size of possible extension queue 275. Compared 21889 event pairs, 749 based on Foata normal form. 160/4338 useless extension candidates. Maximal degree in co-relation 33836. Up to 2220 conditions per place. [2024-11-09 02:49:42,423 INFO L140 encePairwiseOnDemand]: 21/27 looper letters, 425 selfloop transitions, 79 changer transitions 92/597 dead transitions. [2024-11-09 02:49:42,424 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 597 transitions, 10926 flow [2024-11-09 02:49:42,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 02:49:42,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-09 02:49:42,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 92 transitions. [2024-11-09 02:49:42,425 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.48677248677248675 [2024-11-09 02:49:42,425 INFO L175 Difference]: Start difference. First operand has 260 places, 587 transitions, 9684 flow. Second operand 7 states and 92 transitions. [2024-11-09 02:49:42,425 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 597 transitions, 10926 flow [2024-11-09 02:49:42,766 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 597 transitions, 10445 flow, removed 73 selfloop flow, removed 12 redundant places. [2024-11-09 02:49:42,773 INFO L231 Difference]: Finished difference. Result has 246 places, 473 transitions, 7639 flow [2024-11-09 02:49:42,774 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=8699, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=545, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=466, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7639, PETRI_PLACES=246, PETRI_TRANSITIONS=473} [2024-11-09 02:49:42,774 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 217 predicate places. [2024-11-09 02:49:42,774 INFO L471 AbstractCegarLoop]: Abstraction has has 246 places, 473 transitions, 7639 flow [2024-11-09 02:49:42,774 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.071428571428571) internal successors, (99), 14 states have internal predecessors, (99), 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 02:49:42,774 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:49:42,775 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:49:42,788 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2024-11-09 02:49:42,975 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-09 02:49:42,975 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 02:49:42,975 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:49:42,976 INFO L85 PathProgramCache]: Analyzing trace with hash -1270728760, now seen corresponding path program 2 times [2024-11-09 02:49:42,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:49:42,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514291422] [2024-11-09 02:49:42,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:49:42,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:49:42,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:49:43,065 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:49:43,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:49:43,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514291422] [2024-11-09 02:49:43,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514291422] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:49:43,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1895943055] [2024-11-09 02:49:43,066 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 02:49:43,066 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:49:43,066 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:49:43,068 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:49:43,070 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-11-09 02:49:43,145 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 02:49:43,146 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:49:43,147 INFO L255 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-09 02:49:43,148 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:49:43,225 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:49:43,225 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:49:43,278 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:49:43,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1895943055] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:49:43,279 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:49:43,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2024-11-09 02:49:43,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633869495] [2024-11-09 02:49:43,279 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:49:43,279 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-09 02:49:43,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:49:43,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-09 02:49:43,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2024-11-09 02:49:43,280 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2024-11-09 02:49:43,280 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 473 transitions, 7639 flow. Second operand has 17 states, 17 states have (on average 6.235294117647059) internal successors, (106), 17 states have internal predecessors, (106), 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 02:49:43,280 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:49:43,280 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2024-11-09 02:49:43,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:49:43,920 INFO L124 PetriNetUnfolderBase]: 2428/3706 cut-off events. [2024-11-09 02:49:43,921 INFO L125 PetriNetUnfolderBase]: For 51365/51365 co-relation queries the response was YES. [2024-11-09 02:49:43,942 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28639 conditions, 3706 events. 2428/3706 cut-off events. For 51365/51365 co-relation queries the response was YES. Maximal size of possible extension queue 260. Compared 19155 event pairs, 663 based on Foata normal form. 82/3788 useless extension candidates. Maximal degree in co-relation 28545. Up to 2220 conditions per place. [2024-11-09 02:49:43,958 INFO L140 encePairwiseOnDemand]: 18/27 looper letters, 463 selfloop transitions, 99 changer transitions 26/589 dead transitions. [2024-11-09 02:49:43,958 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 589 transitions, 10117 flow [2024-11-09 02:49:43,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-09 02:49:43,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-09 02:49:43,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 125 transitions. [2024-11-09 02:49:43,959 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.46296296296296297 [2024-11-09 02:49:43,959 INFO L175 Difference]: Start difference. First operand has 246 places, 473 transitions, 7639 flow. Second operand 10 states and 125 transitions. [2024-11-09 02:49:43,959 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 589 transitions, 10117 flow [2024-11-09 02:49:44,231 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 589 transitions, 9761 flow, removed 125 selfloop flow, removed 10 redundant places. [2024-11-09 02:49:44,239 INFO L231 Difference]: Finished difference. Result has 236 places, 486 transitions, 7772 flow [2024-11-09 02:49:44,239 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=7402, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=473, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=394, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7772, PETRI_PLACES=236, PETRI_TRANSITIONS=486} [2024-11-09 02:49:44,240 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 207 predicate places. [2024-11-09 02:49:44,240 INFO L471 AbstractCegarLoop]: Abstraction has has 236 places, 486 transitions, 7772 flow [2024-11-09 02:49:44,240 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 6.235294117647059) internal successors, (106), 17 states have internal predecessors, (106), 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 02:49:44,240 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:49:44,241 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:49:44,253 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2024-11-09 02:49:44,441 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-09 02:49:44,441 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 02:49:44,441 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:49:44,442 INFO L85 PathProgramCache]: Analyzing trace with hash -532697314, now seen corresponding path program 3 times [2024-11-09 02:49:44,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:49:44,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135243230] [2024-11-09 02:49:44,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:49:44,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:49:44,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:49:44,523 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:49:44,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:49:44,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135243230] [2024-11-09 02:49:44,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [135243230] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:49:44,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [590872406] [2024-11-09 02:49:44,524 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 02:49:44,524 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:49:44,524 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:49:44,525 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:49:44,526 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-11-09 02:49:44,594 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-09 02:49:44,594 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:49:44,595 INFO L255 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-09 02:49:44,596 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:49:44,657 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:49:44,657 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:49:44,735 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:49:44,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [590872406] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:49:44,735 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:49:44,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2024-11-09 02:49:44,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209836528] [2024-11-09 02:49:44,736 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:49:44,736 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-09 02:49:44,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:49:44,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-09 02:49:44,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2024-11-09 02:49:44,737 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2024-11-09 02:49:44,737 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 486 transitions, 7772 flow. Second operand has 18 states, 18 states have (on average 6.0) internal successors, (108), 18 states have internal predecessors, (108), 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 02:49:44,737 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:49:44,737 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2024-11-09 02:49:44,737 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:49:45,550 INFO L124 PetriNetUnfolderBase]: 2275/3490 cut-off events. [2024-11-09 02:49:45,550 INFO L125 PetriNetUnfolderBase]: For 50775/50775 co-relation queries the response was YES. [2024-11-09 02:49:45,570 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27176 conditions, 3490 events. 2275/3490 cut-off events. For 50775/50775 co-relation queries the response was YES. Maximal size of possible extension queue 244. Compared 17948 event pairs, 668 based on Foata normal form. 79/3569 useless extension candidates. Maximal degree in co-relation 27086. Up to 2220 conditions per place. [2024-11-09 02:49:45,589 INFO L140 encePairwiseOnDemand]: 18/27 looper letters, 418 selfloop transitions, 61 changer transitions 61/541 dead transitions. [2024-11-09 02:49:45,589 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 541 transitions, 9235 flow [2024-11-09 02:49:45,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-09 02:49:45,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-09 02:49:45,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 120 transitions. [2024-11-09 02:49:45,590 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-11-09 02:49:45,590 INFO L175 Difference]: Start difference. First operand has 236 places, 486 transitions, 7772 flow. Second operand 10 states and 120 transitions. [2024-11-09 02:49:45,590 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 541 transitions, 9235 flow [2024-11-09 02:49:45,918 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 541 transitions, 8965 flow, removed 70 selfloop flow, removed 8 redundant places. [2024-11-09 02:49:45,928 INFO L231 Difference]: Finished difference. Result has 235 places, 426 transitions, 6530 flow [2024-11-09 02:49:45,928 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=7211, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=466, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=405, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6530, PETRI_PLACES=235, PETRI_TRANSITIONS=426} [2024-11-09 02:49:45,929 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 206 predicate places. [2024-11-09 02:49:45,929 INFO L471 AbstractCegarLoop]: Abstraction has has 235 places, 426 transitions, 6530 flow [2024-11-09 02:49:45,929 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.0) internal successors, (108), 18 states have internal predecessors, (108), 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 02:49:45,929 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:49:45,930 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:49:45,947 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2024-11-09 02:49:46,130 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:49:46,130 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 02:49:46,131 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:49:46,131 INFO L85 PathProgramCache]: Analyzing trace with hash 1088375026, now seen corresponding path program 4 times [2024-11-09 02:49:46,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:49:46,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882570908] [2024-11-09 02:49:46,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:49:46,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:49:46,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:49:46,221 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:49:46,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:49:46,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882570908] [2024-11-09 02:49:46,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882570908] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:49:46,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1673214752] [2024-11-09 02:49:46,222 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 02:49:46,222 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:49:46,222 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:49:46,223 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:49:46,224 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-11-09 02:49:46,289 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 02:49:46,289 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:49:46,290 INFO L255 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-09 02:49:46,291 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:49:46,359 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 02:49:46,360 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:49:46,428 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 02:49:46,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1673214752] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:49:46,428 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:49:46,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 18 [2024-11-09 02:49:46,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876604376] [2024-11-09 02:49:46,429 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:49:46,429 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-09 02:49:46,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:49:46,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-09 02:49:46,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2024-11-09 02:49:46,430 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2024-11-09 02:49:46,430 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 426 transitions, 6530 flow. Second operand has 18 states, 18 states have (on average 6.5) internal successors, (117), 18 states have internal predecessors, (117), 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 02:49:46,430 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:49:46,430 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2024-11-09 02:49:46,431 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:49:47,836 INFO L124 PetriNetUnfolderBase]: 2617/3909 cut-off events. [2024-11-09 02:49:47,836 INFO L125 PetriNetUnfolderBase]: For 57751/57751 co-relation queries the response was YES. [2024-11-09 02:49:47,856 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30510 conditions, 3909 events. 2617/3909 cut-off events. For 57751/57751 co-relation queries the response was YES. Maximal size of possible extension queue 286. Compared 19815 event pairs, 250 based on Foata normal form. 79/3988 useless extension candidates. Maximal degree in co-relation 30422. Up to 1101 conditions per place. [2024-11-09 02:49:47,872 INFO L140 encePairwiseOnDemand]: 15/27 looper letters, 409 selfloop transitions, 288 changer transitions 65/763 dead transitions. [2024-11-09 02:49:47,872 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 763 transitions, 12043 flow [2024-11-09 02:49:47,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2024-11-09 02:49:47,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2024-11-09 02:49:47,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 500 transitions. [2024-11-09 02:49:47,874 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3561253561253561 [2024-11-09 02:49:47,874 INFO L175 Difference]: Start difference. First operand has 235 places, 426 transitions, 6530 flow. Second operand 52 states and 500 transitions. [2024-11-09 02:49:47,874 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 763 transitions, 12043 flow [2024-11-09 02:49:48,163 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 763 transitions, 11653 flow, removed 93 selfloop flow, removed 11 redundant places. [2024-11-09 02:49:48,172 INFO L231 Difference]: Finished difference. Result has 291 places, 539 transitions, 8864 flow [2024-11-09 02:49:48,172 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=6278, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=424, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=164, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=52, PETRI_FLOW=8864, PETRI_PLACES=291, PETRI_TRANSITIONS=539} [2024-11-09 02:49:48,173 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 262 predicate places. [2024-11-09 02:49:48,173 INFO L471 AbstractCegarLoop]: Abstraction has has 291 places, 539 transitions, 8864 flow [2024-11-09 02:49:48,173 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.5) internal successors, (117), 18 states have internal predecessors, (117), 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 02:49:48,173 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:49:48,173 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:49:48,185 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2024-11-09 02:49:48,373 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:49:48,374 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 02:49:48,374 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:49:48,374 INFO L85 PathProgramCache]: Analyzing trace with hash -510134992, now seen corresponding path program 5 times [2024-11-09 02:49:48,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:49:48,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738654660] [2024-11-09 02:49:48,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:49:48,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:49:48,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:49:48,454 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 02:49:48,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:49:48,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738654660] [2024-11-09 02:49:48,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738654660] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:49:48,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1543641952] [2024-11-09 02:49:48,454 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-09 02:49:48,455 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:49:48,455 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:49:48,456 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:49:48,459 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-11-09 02:49:48,525 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 02:49:48,525 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:49:48,526 INFO L255 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-09 02:49:48,527 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:49:48,591 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 02:49:48,591 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:49:48,649 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 02:49:48,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1543641952] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:49:48,649 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:49:48,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2024-11-09 02:49:48,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734345146] [2024-11-09 02:49:48,650 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:49:48,650 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-09 02:49:48,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:49:48,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-09 02:49:48,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=203, Unknown=0, NotChecked=0, Total=272 [2024-11-09 02:49:48,651 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2024-11-09 02:49:48,651 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 539 transitions, 8864 flow. Second operand has 17 states, 17 states have (on average 6.176470588235294) internal successors, (105), 17 states have internal predecessors, (105), 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 02:49:48,651 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:49:48,651 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2024-11-09 02:49:48,651 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:49:49,329 INFO L124 PetriNetUnfolderBase]: 2323/3457 cut-off events. [2024-11-09 02:49:49,329 INFO L125 PetriNetUnfolderBase]: For 64215/64215 co-relation queries the response was YES. [2024-11-09 02:49:49,350 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30074 conditions, 3457 events. 2323/3457 cut-off events. For 64215/64215 co-relation queries the response was YES. Maximal size of possible extension queue 244. Compared 16877 event pairs, 659 based on Foata normal form. 98/3555 useless extension candidates. Maximal degree in co-relation 29967. Up to 2748 conditions per place. [2024-11-09 02:49:49,364 INFO L140 encePairwiseOnDemand]: 18/27 looper letters, 478 selfloop transitions, 55 changer transitions 30/564 dead transitions. [2024-11-09 02:49:49,365 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 564 transitions, 10114 flow [2024-11-09 02:49:49,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-09 02:49:49,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-09 02:49:49,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 107 transitions. [2024-11-09 02:49:49,366 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4403292181069959 [2024-11-09 02:49:49,366 INFO L175 Difference]: Start difference. First operand has 291 places, 539 transitions, 8864 flow. Second operand 9 states and 107 transitions. [2024-11-09 02:49:49,366 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 564 transitions, 10114 flow [2024-11-09 02:49:49,784 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 564 transitions, 9058 flow, removed 346 selfloop flow, removed 24 redundant places. [2024-11-09 02:49:49,794 INFO L231 Difference]: Finished difference. Result has 266 places, 510 transitions, 7492 flow [2024-11-09 02:49:49,795 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=7631, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=519, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=471, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=7492, PETRI_PLACES=266, PETRI_TRANSITIONS=510} [2024-11-09 02:49:49,795 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 237 predicate places. [2024-11-09 02:49:49,795 INFO L471 AbstractCegarLoop]: Abstraction has has 266 places, 510 transitions, 7492 flow [2024-11-09 02:49:49,795 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 6.176470588235294) internal successors, (105), 17 states have internal predecessors, (105), 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 02:49:49,796 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:49:49,796 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] [2024-11-09 02:49:49,808 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2024-11-09 02:49:49,996 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:49:49,996 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 02:49:49,997 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:49:49,997 INFO L85 PathProgramCache]: Analyzing trace with hash 948173126, now seen corresponding path program 6 times [2024-11-09 02:49:49,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:49:49,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401561440] [2024-11-09 02:49:49,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:49:49,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:49:50,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:49:50,087 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 02:49:50,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:49:50,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401561440] [2024-11-09 02:49:50,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401561440] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:49:50,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [283785120] [2024-11-09 02:49:50,088 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-09 02:49:50,088 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:49:50,088 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:49:50,090 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:49:50,092 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-11-09 02:49:50,169 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-11-09 02:49:50,169 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:49:50,170 INFO L255 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-09 02:49:50,171 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:49:50,235 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 02:49:50,235 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:49:50,303 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 02:49:50,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [283785120] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:49:50,304 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:49:50,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2024-11-09 02:49:50,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121743172] [2024-11-09 02:49:50,304 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:49:50,304 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-09 02:49:50,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:49:50,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-09 02:49:50,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=235, Unknown=0, NotChecked=0, Total=306 [2024-11-09 02:49:50,305 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2024-11-09 02:49:50,305 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 510 transitions, 7492 flow. Second operand has 18 states, 18 states have (on average 6.0) internal successors, (108), 18 states have internal predecessors, (108), 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 02:49:50,305 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:49:50,305 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2024-11-09 02:49:50,305 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:49:50,839 INFO L124 PetriNetUnfolderBase]: 2075/3054 cut-off events. [2024-11-09 02:49:50,839 INFO L125 PetriNetUnfolderBase]: For 51022/51022 co-relation queries the response was YES. [2024-11-09 02:49:50,856 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25668 conditions, 3054 events. 2075/3054 cut-off events. For 51022/51022 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 14151 event pairs, 626 based on Foata normal form. 79/3133 useless extension candidates. Maximal degree in co-relation 25571. Up to 2748 conditions per place. [2024-11-09 02:49:50,869 INFO L140 encePairwiseOnDemand]: 19/27 looper letters, 384 selfloop transitions, 3 changer transitions 82/470 dead transitions. [2024-11-09 02:49:50,869 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 470 transitions, 7735 flow [2024-11-09 02:49:50,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-09 02:49:50,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-09 02:49:50,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 97 transitions. [2024-11-09 02:49:50,870 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3991769547325103 [2024-11-09 02:49:50,870 INFO L175 Difference]: Start difference. First operand has 266 places, 510 transitions, 7492 flow. Second operand 9 states and 97 transitions. [2024-11-09 02:49:50,870 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 470 transitions, 7735 flow [2024-11-09 02:49:51,098 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 470 transitions, 7532 flow, removed 25 selfloop flow, removed 13 redundant places. [2024-11-09 02:49:51,103 INFO L231 Difference]: Finished difference. Result has 257 places, 388 transitions, 5662 flow [2024-11-09 02:49:51,104 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=6556, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=455, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=452, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5662, PETRI_PLACES=257, PETRI_TRANSITIONS=388} [2024-11-09 02:49:51,104 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 228 predicate places. [2024-11-09 02:49:51,104 INFO L471 AbstractCegarLoop]: Abstraction has has 257 places, 388 transitions, 5662 flow [2024-11-09 02:49:51,105 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.0) internal successors, (108), 18 states have internal predecessors, (108), 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 02:49:51,105 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:49:51,105 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:49:51,117 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2024-11-09 02:49:51,305 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:49:51,305 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 02:49:51,306 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:49:51,306 INFO L85 PathProgramCache]: Analyzing trace with hash 1419626082, now seen corresponding path program 10 times [2024-11-09 02:49:51,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:49:51,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832902791] [2024-11-09 02:49:51,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:49:51,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:49:51,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:49:51,415 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 02:49:51,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:49:51,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832902791] [2024-11-09 02:49:51,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832902791] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:49:51,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [426177903] [2024-11-09 02:49:51,415 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 02:49:51,415 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:49:51,416 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:49:51,417 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:49:51,417 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2024-11-09 02:49:51,485 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 02:49:51,485 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:49:51,486 INFO L255 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 02:49:51,486 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:49:51,594 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 02:49:51,595 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:49:51,665 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 02:49:51,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [426177903] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:49:51,665 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:49:51,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2024-11-09 02:49:51,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905256362] [2024-11-09 02:49:51,665 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:49:51,666 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-09 02:49:51,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:49:51,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-09 02:49:51,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=289, Unknown=0, NotChecked=0, Total=342 [2024-11-09 02:49:51,667 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2024-11-09 02:49:51,667 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 388 transitions, 5662 flow. Second operand has 19 states, 19 states have (on average 6.368421052631579) internal successors, (121), 19 states have internal predecessors, (121), 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 02:49:51,667 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:49:51,667 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2024-11-09 02:49:51,667 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:49:52,582 INFO L124 PetriNetUnfolderBase]: 1948/2771 cut-off events. [2024-11-09 02:49:52,582 INFO L125 PetriNetUnfolderBase]: For 43372/43372 co-relation queries the response was YES. [2024-11-09 02:49:52,597 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23320 conditions, 2771 events. 1948/2771 cut-off events. For 43372/43372 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 11873 event pairs, 154 based on Foata normal form. 28/2799 useless extension candidates. Maximal degree in co-relation 23225. Up to 986 conditions per place. [2024-11-09 02:49:52,608 INFO L140 encePairwiseOnDemand]: 15/27 looper letters, 281 selfloop transitions, 219 changer transitions 0/501 dead transitions. [2024-11-09 02:49:52,608 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 501 transitions, 7949 flow [2024-11-09 02:49:52,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-09 02:49:52,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-11-09 02:49:52,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 209 transitions. [2024-11-09 02:49:52,609 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.387037037037037 [2024-11-09 02:49:52,609 INFO L175 Difference]: Start difference. First operand has 257 places, 388 transitions, 5662 flow. Second operand 20 states and 209 transitions. [2024-11-09 02:49:52,609 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 501 transitions, 7949 flow [2024-11-09 02:49:52,767 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 501 transitions, 7508 flow, removed 157 selfloop flow, removed 24 redundant places. [2024-11-09 02:49:52,773 INFO L231 Difference]: Finished difference. Result has 207 places, 404 transitions, 6117 flow [2024-11-09 02:49:52,773 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=5332, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=385, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=200, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=6117, PETRI_PLACES=207, PETRI_TRANSITIONS=404} [2024-11-09 02:49:52,774 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 178 predicate places. [2024-11-09 02:49:52,774 INFO L471 AbstractCegarLoop]: Abstraction has has 207 places, 404 transitions, 6117 flow [2024-11-09 02:49:52,774 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 6.368421052631579) internal successors, (121), 19 states have internal predecessors, (121), 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 02:49:52,774 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:49:52,774 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:49:52,789 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2024-11-09 02:49:52,974 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2024-11-09 02:49:52,975 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 02:49:52,975 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:49:52,975 INFO L85 PathProgramCache]: Analyzing trace with hash -1282815831, now seen corresponding path program 8 times [2024-11-09 02:49:52,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:49:52,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868607746] [2024-11-09 02:49:52,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:49:52,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:49:52,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:49:53,085 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 02:49:53,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:49:53,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868607746] [2024-11-09 02:49:53,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868607746] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:49:53,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [454906723] [2024-11-09 02:49:53,086 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-09 02:49:53,086 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:49:53,086 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:49:53,088 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:49:53,089 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2024-11-09 02:49:53,173 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 02:49:53,173 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:49:53,174 INFO L255 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-09 02:49:53,175 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:49:53,257 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 02:49:53,257 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:49:53,329 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 02:49:53,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [454906723] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:49:53,329 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:49:53,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 19 [2024-11-09 02:49:53,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802796403] [2024-11-09 02:49:53,330 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:49:53,330 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-09 02:49:53,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:49:53,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-09 02:49:53,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=295, Unknown=0, NotChecked=0, Total=380 [2024-11-09 02:49:53,331 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2024-11-09 02:49:53,331 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 404 transitions, 6117 flow. Second operand has 20 states, 20 states have (on average 6.15) internal successors, (123), 20 states have internal predecessors, (123), 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 02:49:53,331 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:49:53,331 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2024-11-09 02:49:53,331 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:49:53,994 INFO L124 PetriNetUnfolderBase]: 2534/3602 cut-off events. [2024-11-09 02:49:53,994 INFO L125 PetriNetUnfolderBase]: For 52426/52426 co-relation queries the response was YES. [2024-11-09 02:49:54,011 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29620 conditions, 3602 events. 2534/3602 cut-off events. For 52426/52426 co-relation queries the response was YES. Maximal size of possible extension queue 237. Compared 16310 event pairs, 323 based on Foata normal form. 54/3656 useless extension candidates. Maximal degree in co-relation 29541. Up to 1962 conditions per place. [2024-11-09 02:49:54,026 INFO L140 encePairwiseOnDemand]: 18/27 looper letters, 444 selfloop transitions, 253 changer transitions 0/698 dead transitions. [2024-11-09 02:49:54,026 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 698 transitions, 11277 flow [2024-11-09 02:49:54,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-09 02:49:54,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-09 02:49:54,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 167 transitions. [2024-11-09 02:49:54,027 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4123456790123457 [2024-11-09 02:49:54,027 INFO L175 Difference]: Start difference. First operand has 207 places, 404 transitions, 6117 flow. Second operand 15 states and 167 transitions. [2024-11-09 02:49:54,028 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 698 transitions, 11277 flow [2024-11-09 02:49:54,249 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 698 transitions, 10850 flow, removed 114 selfloop flow, removed 9 redundant places. [2024-11-09 02:49:54,257 INFO L231 Difference]: Finished difference. Result has 217 places, 499 transitions, 7917 flow [2024-11-09 02:49:54,257 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=5811, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=404, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=165, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=7917, PETRI_PLACES=217, PETRI_TRANSITIONS=499} [2024-11-09 02:49:54,257 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 188 predicate places. [2024-11-09 02:49:54,257 INFO L471 AbstractCegarLoop]: Abstraction has has 217 places, 499 transitions, 7917 flow [2024-11-09 02:49:54,258 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 6.15) internal successors, (123), 20 states have internal predecessors, (123), 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 02:49:54,258 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:49:54,258 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:49:54,270 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2024-11-09 02:49:54,458 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:49:54,458 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 02:49:54,459 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:49:54,459 INFO L85 PathProgramCache]: Analyzing trace with hash -731354923, now seen corresponding path program 9 times [2024-11-09 02:49:54,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:49:54,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262608760] [2024-11-09 02:49:54,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:49:54,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:49:54,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:49:54,547 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 02:49:54,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:49:54,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262608760] [2024-11-09 02:49:54,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262608760] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:49:54,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [998251799] [2024-11-09 02:49:54,548 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-09 02:49:54,549 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:49:54,549 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:49:54,550 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:49:54,551 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2024-11-09 02:49:54,638 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-09 02:49:54,638 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:49:54,639 INFO L255 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-09 02:49:54,640 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:49:54,723 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 02:49:54,723 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:49:54,786 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-09 02:49:54,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [998251799] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:49:54,786 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:49:54,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2024-11-09 02:49:54,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771042208] [2024-11-09 02:49:54,786 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:49:54,787 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-09 02:49:54,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:49:54,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-09 02:49:54,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=235, Unknown=0, NotChecked=0, Total=306 [2024-11-09 02:49:54,787 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2024-11-09 02:49:54,787 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 499 transitions, 7917 flow. Second operand has 18 states, 18 states have (on average 6.0) internal successors, (108), 18 states have internal predecessors, (108), 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 02:49:54,788 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:49:54,788 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2024-11-09 02:49:54,788 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:49:55,403 INFO L124 PetriNetUnfolderBase]: 2639/3795 cut-off events. [2024-11-09 02:49:55,404 INFO L125 PetriNetUnfolderBase]: For 63336/63336 co-relation queries the response was YES. [2024-11-09 02:49:55,423 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32887 conditions, 3795 events. 2639/3795 cut-off events. For 63336/63336 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 17673 event pairs, 217 based on Foata normal form. 30/3825 useless extension candidates. Maximal degree in co-relation 32805. Up to 1295 conditions per place. [2024-11-09 02:49:55,441 INFO L140 encePairwiseOnDemand]: 18/27 looper letters, 451 selfloop transitions, 207 changer transitions 0/659 dead transitions. [2024-11-09 02:49:55,441 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 659 transitions, 11422 flow [2024-11-09 02:49:55,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-09 02:49:55,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-09 02:49:55,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-11-09 02:49:55,442 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.40370370370370373 [2024-11-09 02:49:55,442 INFO L175 Difference]: Start difference. First operand has 217 places, 499 transitions, 7917 flow. Second operand 10 states and 109 transitions. [2024-11-09 02:49:55,442 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 659 transitions, 11422 flow [2024-11-09 02:49:55,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 659 transitions, 10958 flow, removed 209 selfloop flow, removed 5 redundant places. [2024-11-09 02:49:55,781 INFO L231 Difference]: Finished difference. Result has 223 places, 512 transitions, 8260 flow [2024-11-09 02:49:55,781 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=7453, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=499, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=194, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=292, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=8260, PETRI_PLACES=223, PETRI_TRANSITIONS=512} [2024-11-09 02:49:55,782 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 194 predicate places. [2024-11-09 02:49:55,782 INFO L471 AbstractCegarLoop]: Abstraction has has 223 places, 512 transitions, 8260 flow [2024-11-09 02:49:55,782 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.0) internal successors, (108), 18 states have internal predecessors, (108), 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 02:49:55,782 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:49:55,782 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:49:55,798 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2024-11-09 02:49:55,983 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:49:55,983 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 02:49:55,983 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:49:55,983 INFO L85 PathProgramCache]: Analyzing trace with hash 1409569305, now seen corresponding path program 10 times [2024-11-09 02:49:55,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:49:55,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875750556] [2024-11-09 02:49:55,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:49:55,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:49:55,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:49:56,088 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 02:49:56,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:49:56,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875750556] [2024-11-09 02:49:56,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [875750556] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:49:56,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1399685942] [2024-11-09 02:49:56,088 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-09 02:49:56,089 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:49:56,089 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:49:56,091 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:49:56,092 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2024-11-09 02:49:56,169 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-09 02:49:56,169 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:49:56,170 INFO L255 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 02:49:56,170 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:49:56,226 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 02:49:56,226 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:49:56,284 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 02:49:56,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1399685942] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:49:56,285 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:49:56,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 17 [2024-11-09 02:49:56,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133768343] [2024-11-09 02:49:56,285 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:49:56,285 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-09 02:49:56,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:49:56,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-09 02:49:56,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2024-11-09 02:49:56,286 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2024-11-09 02:49:56,286 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 512 transitions, 8260 flow. Second operand has 17 states, 17 states have (on average 6.352941176470588) internal successors, (108), 17 states have internal predecessors, (108), 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 02:49:56,286 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:49:56,287 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2024-11-09 02:49:56,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:49:57,203 INFO L124 PetriNetUnfolderBase]: 2676/3857 cut-off events. [2024-11-09 02:49:57,203 INFO L125 PetriNetUnfolderBase]: For 64084/64084 co-relation queries the response was YES. [2024-11-09 02:49:57,221 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33003 conditions, 3857 events. 2676/3857 cut-off events. For 64084/64084 co-relation queries the response was YES. Maximal size of possible extension queue 255. Compared 17993 event pairs, 161 based on Foata normal form. 25/3882 useless extension candidates. Maximal degree in co-relation 32919. Up to 1207 conditions per place. [2024-11-09 02:49:57,237 INFO L140 encePairwiseOnDemand]: 15/27 looper letters, 378 selfloop transitions, 305 changer transitions 0/684 dead transitions. [2024-11-09 02:49:57,238 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 684 transitions, 11658 flow [2024-11-09 02:49:57,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-09 02:49:57,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-11-09 02:49:57,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 196 transitions. [2024-11-09 02:49:57,239 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.362962962962963 [2024-11-09 02:49:57,239 INFO L175 Difference]: Start difference. First operand has 223 places, 512 transitions, 8260 flow. Second operand 20 states and 196 transitions. [2024-11-09 02:49:57,239 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 684 transitions, 11658 flow [2024-11-09 02:49:57,501 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 684 transitions, 11174 flow, removed 47 selfloop flow, removed 7 redundant places. [2024-11-09 02:49:57,510 INFO L231 Difference]: Finished difference. Result has 238 places, 555 transitions, 9222 flow [2024-11-09 02:49:57,510 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=7868, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=512, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=262, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=239, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=9222, PETRI_PLACES=238, PETRI_TRANSITIONS=555} [2024-11-09 02:49:57,510 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 209 predicate places. [2024-11-09 02:49:57,510 INFO L471 AbstractCegarLoop]: Abstraction has has 238 places, 555 transitions, 9222 flow [2024-11-09 02:49:57,511 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 6.352941176470588) internal successors, (108), 17 states have internal predecessors, (108), 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 02:49:57,511 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:49:57,511 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:49:57,523 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2024-11-09 02:49:57,711 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2024-11-09 02:49:57,711 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 02:49:57,712 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:49:57,712 INFO L85 PathProgramCache]: Analyzing trace with hash 1458763499, now seen corresponding path program 11 times [2024-11-09 02:49:57,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:49:57,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279575561] [2024-11-09 02:49:57,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:49:57,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:49:57,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:49:57,803 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 02:49:57,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:49:57,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279575561] [2024-11-09 02:49:57,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279575561] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:49:57,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1774682910] [2024-11-09 02:49:57,804 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-09 02:49:57,804 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:49:57,804 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:49:57,805 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:49:57,806 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2024-11-09 02:49:57,879 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 02:49:57,879 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:49:57,880 INFO L255 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 02:49:57,880 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:49:57,966 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 02:49:57,967 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:49:58,034 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 02:49:58,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1774682910] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:49:58,034 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:49:58,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2024-11-09 02:49:58,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20204325] [2024-11-09 02:49:58,034 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:49:58,035 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-09 02:49:58,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:49:58,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-09 02:49:58,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=272, Unknown=0, NotChecked=0, Total=342 [2024-11-09 02:49:58,036 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2024-11-09 02:49:58,036 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 555 transitions, 9222 flow. Second operand has 19 states, 19 states have (on average 6.052631578947368) internal successors, (115), 19 states have internal predecessors, (115), 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 02:49:58,036 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:49:58,036 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2024-11-09 02:49:58,036 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:49:59,225 INFO L124 PetriNetUnfolderBase]: 2854/4158 cut-off events. [2024-11-09 02:49:59,226 INFO L125 PetriNetUnfolderBase]: For 75376/75376 co-relation queries the response was YES. [2024-11-09 02:49:59,258 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36689 conditions, 4158 events. 2854/4158 cut-off events. For 75376/75376 co-relation queries the response was YES. Maximal size of possible extension queue 288. Compared 20100 event pairs, 167 based on Foata normal form. 52/4210 useless extension candidates. Maximal degree in co-relation 36602. Up to 1207 conditions per place. [2024-11-09 02:49:59,279 INFO L140 encePairwiseOnDemand]: 15/27 looper letters, 404 selfloop transitions, 457 changer transitions 0/862 dead transitions. [2024-11-09 02:49:59,279 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 862 transitions, 14900 flow [2024-11-09 02:49:59,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-11-09 02:49:59,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2024-11-09 02:49:59,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 374 transitions. [2024-11-09 02:49:59,280 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3645224171539961 [2024-11-09 02:49:59,280 INFO L175 Difference]: Start difference. First operand has 238 places, 555 transitions, 9222 flow. Second operand 38 states and 374 transitions. [2024-11-09 02:49:59,281 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 862 transitions, 14900 flow [2024-11-09 02:49:59,601 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 862 transitions, 14632 flow, removed 26 selfloop flow, removed 8 redundant places. [2024-11-09 02:49:59,613 INFO L231 Difference]: Finished difference. Result has 279 places, 678 transitions, 12412 flow [2024-11-09 02:49:59,613 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=9006, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=555, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=344, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=12412, PETRI_PLACES=279, PETRI_TRANSITIONS=678} [2024-11-09 02:49:59,613 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 250 predicate places. [2024-11-09 02:49:59,613 INFO L471 AbstractCegarLoop]: Abstraction has has 279 places, 678 transitions, 12412 flow [2024-11-09 02:49:59,614 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 6.052631578947368) internal successors, (115), 19 states have internal predecessors, (115), 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 02:49:59,614 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:49:59,614 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:49:59,626 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2024-11-09 02:49:59,814 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2024-11-09 02:49:59,814 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 02:49:59,815 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:49:59,815 INFO L85 PathProgramCache]: Analyzing trace with hash 851042482, now seen corresponding path program 11 times [2024-11-09 02:49:59,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:49:59,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239644862] [2024-11-09 02:49:59,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:49:59,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:49:59,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:49:59,923 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 02:49:59,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:49:59,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239644862] [2024-11-09 02:49:59,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239644862] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:49:59,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [12540708] [2024-11-09 02:49:59,923 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-09 02:49:59,924 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:49:59,924 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:49:59,925 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:49:59,928 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2024-11-09 02:50:00,012 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-09 02:50:00,012 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:50:00,014 INFO L255 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-09 02:50:00,014 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:50:00,104 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 02:50:00,105 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:50:00,202 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 02:50:00,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [12540708] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:50:00,203 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:50:00,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2024-11-09 02:50:00,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881392773] [2024-11-09 02:50:00,203 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:50:00,203 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-09 02:50:00,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:50:00,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-09 02:50:00,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=309, Unknown=0, NotChecked=0, Total=380 [2024-11-09 02:50:00,204 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2024-11-09 02:50:00,204 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 678 transitions, 12412 flow. Second operand has 20 states, 20 states have (on average 6.1) internal successors, (122), 20 states have internal predecessors, (122), 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 02:50:00,204 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:50:00,204 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2024-11-09 02:50:00,204 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:50:02,086 INFO L124 PetriNetUnfolderBase]: 4029/5807 cut-off events. [2024-11-09 02:50:02,086 INFO L125 PetriNetUnfolderBase]: For 138056/138056 co-relation queries the response was YES. [2024-11-09 02:50:02,121 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56724 conditions, 5807 events. 4029/5807 cut-off events. For 138056/138056 co-relation queries the response was YES. Maximal size of possible extension queue 365. Compared 29031 event pairs, 143 based on Foata normal form. 59/5866 useless extension candidates. Maximal degree in co-relation 56626. Up to 1885 conditions per place. [2024-11-09 02:50:02,149 INFO L140 encePairwiseOnDemand]: 15/27 looper letters, 482 selfloop transitions, 619 changer transitions 0/1102 dead transitions. [2024-11-09 02:50:02,149 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 322 places, 1102 transitions, 20904 flow [2024-11-09 02:50:02,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2024-11-09 02:50:02,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2024-11-09 02:50:02,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 457 transitions. [2024-11-09 02:50:02,151 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3846801346801347 [2024-11-09 02:50:02,151 INFO L175 Difference]: Start difference. First operand has 279 places, 678 transitions, 12412 flow. Second operand 44 states and 457 transitions. [2024-11-09 02:50:02,151 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 322 places, 1102 transitions, 20904 flow [2024-11-09 02:50:02,903 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 1102 transitions, 19639 flow, removed 463 selfloop flow, removed 10 redundant places. [2024-11-09 02:50:02,919 INFO L231 Difference]: Finished difference. Result has 325 places, 845 transitions, 16041 flow [2024-11-09 02:50:02,919 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=11114, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=674, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=470, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=16041, PETRI_PLACES=325, PETRI_TRANSITIONS=845} [2024-11-09 02:50:02,920 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 296 predicate places. [2024-11-09 02:50:02,920 INFO L471 AbstractCegarLoop]: Abstraction has has 325 places, 845 transitions, 16041 flow [2024-11-09 02:50:02,920 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 6.1) internal successors, (122), 20 states have internal predecessors, (122), 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 02:50:02,920 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:50:02,920 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:50:02,936 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2024-11-09 02:50:03,124 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2024-11-09 02:50:03,125 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 02:50:03,125 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:50:03,125 INFO L85 PathProgramCache]: Analyzing trace with hash 675261373, now seen corresponding path program 12 times [2024-11-09 02:50:03,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:50:03,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547411412] [2024-11-09 02:50:03,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:50:03,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:50:03,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:50:03,207 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 02:50:03,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:50:03,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547411412] [2024-11-09 02:50:03,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547411412] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:50:03,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [8753154] [2024-11-09 02:50:03,207 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-09 02:50:03,207 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:50:03,207 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:50:03,208 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:50:03,209 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2024-11-09 02:50:03,282 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-09 02:50:03,282 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:50:03,282 INFO L255 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-09 02:50:03,283 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:50:03,358 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 02:50:03,358 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:50:03,438 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 02:50:03,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [8753154] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:50:03,438 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:50:03,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 20 [2024-11-09 02:50:03,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51233229] [2024-11-09 02:50:03,438 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:50:03,439 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-09 02:50:03,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:50:03,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-09 02:50:03,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=334, Unknown=0, NotChecked=0, Total=420 [2024-11-09 02:50:03,439 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2024-11-09 02:50:03,440 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 845 transitions, 16041 flow. Second operand has 21 states, 21 states have (on average 5.809523809523809) internal successors, (122), 21 states have internal predecessors, (122), 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 02:50:03,440 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:50:03,440 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2024-11-09 02:50:03,440 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:50:04,758 INFO L124 PetriNetUnfolderBase]: 3992/5741 cut-off events. [2024-11-09 02:50:04,758 INFO L125 PetriNetUnfolderBase]: For 136434/136434 co-relation queries the response was YES. [2024-11-09 02:50:04,790 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57368 conditions, 5741 events. 3992/5741 cut-off events. For 136434/136434 co-relation queries the response was YES. Maximal size of possible extension queue 361. Compared 28344 event pairs, 859 based on Foata normal form. 25/5766 useless extension candidates. Maximal degree in co-relation 57257. Up to 4017 conditions per place. [2024-11-09 02:50:04,818 INFO L140 encePairwiseOnDemand]: 18/27 looper letters, 661 selfloop transitions, 257 changer transitions 0/919 dead transitions. [2024-11-09 02:50:04,818 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 337 places, 919 transitions, 18560 flow [2024-11-09 02:50:04,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-09 02:50:04,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-09 02:50:04,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 133 transitions. [2024-11-09 02:50:04,819 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3789173789173789 [2024-11-09 02:50:04,819 INFO L175 Difference]: Start difference. First operand has 325 places, 845 transitions, 16041 flow. Second operand 13 states and 133 transitions. [2024-11-09 02:50:04,819 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 337 places, 919 transitions, 18560 flow [2024-11-09 02:50:05,612 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 919 transitions, 16600 flow, removed 595 selfloop flow, removed 17 redundant places. [2024-11-09 02:50:05,625 INFO L231 Difference]: Finished difference. Result has 320 places, 837 transitions, 14469 flow [2024-11-09 02:50:05,625 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=13955, PETRI_DIFFERENCE_MINUEND_PLACES=308, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=837, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=257, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=580, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=14469, PETRI_PLACES=320, PETRI_TRANSITIONS=837} [2024-11-09 02:50:05,626 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 291 predicate places. [2024-11-09 02:50:05,626 INFO L471 AbstractCegarLoop]: Abstraction has has 320 places, 837 transitions, 14469 flow [2024-11-09 02:50:05,626 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.809523809523809) internal successors, (122), 21 states have internal predecessors, (122), 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 02:50:05,626 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:50:05,626 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:50:05,639 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2024-11-09 02:50:05,827 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2024-11-09 02:50:05,827 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 02:50:05,827 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:50:05,827 INFO L85 PathProgramCache]: Analyzing trace with hash -354849624, now seen corresponding path program 12 times [2024-11-09 02:50:05,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:50:05,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68569893] [2024-11-09 02:50:05,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:50:05,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:50:05,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:50:05,916 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 02:50:05,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:50:05,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68569893] [2024-11-09 02:50:05,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68569893] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:50:05,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [381113810] [2024-11-09 02:50:05,916 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-09 02:50:05,917 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:50:05,917 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:50:05,918 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:50:05,919 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2024-11-09 02:50:05,999 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-09 02:50:05,999 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-09 02:50:06,000 INFO L255 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-09 02:50:06,001 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:50:06,077 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 02:50:06,078 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:50:06,151 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 02:50:06,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [381113810] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:50:06,152 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:50:06,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 19 [2024-11-09 02:50:06,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674490902] [2024-11-09 02:50:06,152 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:50:06,152 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-09 02:50:06,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:50:06,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-09 02:50:06,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=298, Unknown=0, NotChecked=0, Total=380 [2024-11-09 02:50:06,153 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2024-11-09 02:50:06,153 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 320 places, 837 transitions, 14469 flow. Second operand has 20 states, 20 states have (on average 5.95) internal successors, (119), 20 states have internal predecessors, (119), 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 02:50:06,153 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:50:06,153 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2024-11-09 02:50:06,153 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:50:07,411 INFO L124 PetriNetUnfolderBase]: 4079/5891 cut-off events. [2024-11-09 02:50:07,411 INFO L125 PetriNetUnfolderBase]: For 103052/103052 co-relation queries the response was YES. [2024-11-09 02:50:07,442 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51215 conditions, 5891 events. 4079/5891 cut-off events. For 103052/103052 co-relation queries the response was YES. Maximal size of possible extension queue 359. Compared 29336 event pairs, 559 based on Foata normal form. 17/5908 useless extension candidates. Maximal degree in co-relation 51104. Up to 2379 conditions per place. [2024-11-09 02:50:07,469 INFO L140 encePairwiseOnDemand]: 18/27 looper letters, 611 selfloop transitions, 308 changer transitions 0/920 dead transitions. [2024-11-09 02:50:07,469 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 920 transitions, 17250 flow [2024-11-09 02:50:07,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-09 02:50:07,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-09 02:50:07,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 104 transitions. [2024-11-09 02:50:07,470 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3851851851851852 [2024-11-09 02:50:07,470 INFO L175 Difference]: Start difference. First operand has 320 places, 837 transitions, 14469 flow. Second operand 10 states and 104 transitions. [2024-11-09 02:50:07,470 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 920 transitions, 17250 flow [2024-11-09 02:50:08,070 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 920 transitions, 16633 flow, removed 26 selfloop flow, removed 17 redundant places. [2024-11-09 02:50:08,088 INFO L231 Difference]: Finished difference. Result has 313 places, 832 transitions, 14412 flow [2024-11-09 02:50:08,088 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=13760, PETRI_DIFFERENCE_MINUEND_PLACES=303, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=832, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=308, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=524, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=14412, PETRI_PLACES=313, PETRI_TRANSITIONS=832} [2024-11-09 02:50:08,089 INFO L277 CegarLoopForPetriNet]: 29 programPoint places, 284 predicate places. [2024-11-09 02:50:08,089 INFO L471 AbstractCegarLoop]: Abstraction has has 313 places, 832 transitions, 14412 flow [2024-11-09 02:50:08,089 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 5.95) internal successors, (119), 20 states have internal predecessors, (119), 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 02:50:08,089 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-09 02:50:08,089 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 02:50:08,107 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2024-11-09 02:50:08,290 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:50:08,290 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-09 02:50:08,290 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 02:50:08,290 INFO L85 PathProgramCache]: Analyzing trace with hash -2058141848, now seen corresponding path program 13 times [2024-11-09 02:50:08,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 02:50:08,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825092404] [2024-11-09 02:50:08,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 02:50:08,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 02:50:08,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:50:08,387 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 02:50:08,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 02:50:08,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825092404] [2024-11-09 02:50:08,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825092404] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 02:50:08,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [140153129] [2024-11-09 02:50:08,388 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-09 02:50:08,388 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 02:50:08,388 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 02:50:08,390 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 02:50:08,391 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2024-11-09 02:50:08,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 02:50:08,473 INFO L255 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-09 02:50:08,474 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 02:50:08,576 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 02:50:08,576 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 02:50:08,679 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-09 02:50:08,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [140153129] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 02:50:08,680 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-09 02:50:08,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 20 [2024-11-09 02:50:08,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537318091] [2024-11-09 02:50:08,680 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-09 02:50:08,680 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-09 02:50:08,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 02:50:08,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-09 02:50:08,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=329, Unknown=0, NotChecked=0, Total=420 [2024-11-09 02:50:08,681 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2024-11-09 02:50:08,681 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 832 transitions, 14412 flow. Second operand has 21 states, 21 states have (on average 5.857142857142857) internal successors, (123), 21 states have internal predecessors, (123), 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 02:50:08,681 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-09 02:50:08,681 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2024-11-09 02:50:08,681 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-09 02:50:10,177 INFO L124 PetriNetUnfolderBase]: 4053/5844 cut-off events. [2024-11-09 02:50:10,178 INFO L125 PetriNetUnfolderBase]: For 103902/103902 co-relation queries the response was YES. [2024-11-09 02:50:10,221 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51368 conditions, 5844 events. 4053/5844 cut-off events. For 103902/103902 co-relation queries the response was YES. Maximal size of possible extension queue 356. Compared 29037 event pairs, 436 based on Foata normal form. 18/5862 useless extension candidates. Maximal degree in co-relation 51262. Up to 1847 conditions per place. [2024-11-09 02:50:10,252 INFO L140 encePairwiseOnDemand]: 18/27 looper letters, 574 selfloop transitions, 408 changer transitions 0/983 dead transitions. [2024-11-09 02:50:10,252 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 983 transitions, 18078 flow [2024-11-09 02:50:10,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-09 02:50:10,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-11-09 02:50:10,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 204 transitions. [2024-11-09 02:50:10,253 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41975308641975306 [2024-11-09 02:50:10,253 INFO L175 Difference]: Start difference. First operand has 313 places, 832 transitions, 14412 flow. Second operand 18 states and 204 transitions. [2024-11-09 02:50:10,254 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 983 transitions, 18078 flow