./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-lamport.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4a390ef5 Calling Ultimate with: /root/.sdkman/candidates/java/current/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 /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-lamport.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 a4f33aa2cc1f38311ba2397f8e50d98656063732fb966533fd95353a255f95b1 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-24 12:30:10,870 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-24 12:30:10,977 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-24 12:30:10,983 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-24 12:30:10,984 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-24 12:30:11,011 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-24 12:30:11,012 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-24 12:30:11,012 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-24 12:30:11,013 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-24 12:30:11,014 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-24 12:30:11,015 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-24 12:30:11,015 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-24 12:30:11,015 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-24 12:30:11,016 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-24 12:30:11,017 INFO L153 SettingsManager]: * Use SBE=true [2024-10-24 12:30:11,017 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-24 12:30:11,018 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-24 12:30:11,018 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-24 12:30:11,018 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-24 12:30:11,019 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-24 12:30:11,019 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-24 12:30:11,020 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-24 12:30:11,020 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-24 12:30:11,020 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-24 12:30:11,020 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-24 12:30:11,021 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-24 12:30:11,021 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-24 12:30:11,021 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-24 12:30:11,022 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-24 12:30:11,022 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-24 12:30:11,022 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-24 12:30:11,022 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-24 12:30:11,023 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 12:30:11,023 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-24 12:30:11,023 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-24 12:30:11,024 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-24 12:30:11,024 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-24 12:30:11,024 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-24 12:30:11,024 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-24 12:30:11,025 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-24 12:30:11,025 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-24 12:30:11,025 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-24 12:30:11,026 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a4f33aa2cc1f38311ba2397f8e50d98656063732fb966533fd95353a255f95b1 [2024-10-24 12:30:11,267 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-24 12:30:11,294 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-24 12:30:11,297 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-24 12:30:11,298 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-24 12:30:11,299 INFO L274 PluginConnector]: CDTParser initialized [2024-10-24 12:30:11,300 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-lamport.wvr.c [2024-10-24 12:30:12,980 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-24 12:30:13,217 INFO L384 CDTParser]: Found 1 translation units. [2024-10-24 12:30:13,218 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-lamport.wvr.c [2024-10-24 12:30:13,227 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5d8ae5edd/e78ab08f6c35469ab0bbc2baf7ed787d/FLAGde540051a [2024-10-24 12:30:13,241 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5d8ae5edd/e78ab08f6c35469ab0bbc2baf7ed787d [2024-10-24 12:30:13,244 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-24 12:30:13,245 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-24 12:30:13,246 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-24 12:30:13,247 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-24 12:30:13,252 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-24 12:30:13,252 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 12:30:13" (1/1) ... [2024-10-24 12:30:13,253 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d08d705 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:30:13, skipping insertion in model container [2024-10-24 12:30:13,253 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 12:30:13" (1/1) ... [2024-10-24 12:30:13,277 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-24 12:30:13,490 WARN L248 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/parallel-lamport.wvr.c[4249,4262] [2024-10-24 12:30:13,507 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 12:30:13,516 INFO L200 MainTranslator]: Completed pre-run [2024-10-24 12:30:13,538 WARN L248 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/parallel-lamport.wvr.c[4249,4262] [2024-10-24 12:30:13,542 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 12:30:13,560 INFO L204 MainTranslator]: Completed translation [2024-10-24 12:30:13,561 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:30:13 WrapperNode [2024-10-24 12:30:13,561 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-24 12:30:13,562 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-24 12:30:13,562 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-24 12:30:13,563 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-24 12:30:13,570 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:30:13" (1/1) ... [2024-10-24 12:30:13,578 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:30:13" (1/1) ... [2024-10-24 12:30:13,604 INFO L138 Inliner]: procedures = 24, calls = 74, calls flagged for inlining = 15, calls inlined = 15, statements flattened = 228 [2024-10-24 12:30:13,605 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-24 12:30:13,606 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-24 12:30:13,606 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-24 12:30:13,606 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-24 12:30:13,620 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:30:13" (1/1) ... [2024-10-24 12:30:13,620 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:30:13" (1/1) ... [2024-10-24 12:30:13,623 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:30:13" (1/1) ... [2024-10-24 12:30:13,645 INFO L175 MemorySlicer]: Split 7 memory accesses to 2 slices as follows [2, 5]. 71 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]. [2024-10-24 12:30:13,649 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:30:13" (1/1) ... [2024-10-24 12:30:13,649 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:30:13" (1/1) ... [2024-10-24 12:30:13,656 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:30:13" (1/1) ... [2024-10-24 12:30:13,660 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:30:13" (1/1) ... [2024-10-24 12:30:13,661 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:30:13" (1/1) ... [2024-10-24 12:30:13,662 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:30:13" (1/1) ... [2024-10-24 12:30:13,665 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-24 12:30:13,665 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-24 12:30:13,666 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-24 12:30:13,666 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-24 12:30:13,667 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:30:13" (1/1) ... [2024-10-24 12:30:13,680 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 12:30:13,702 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 12:30:13,723 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) [2024-10-24 12:30:13,725 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 [2024-10-24 12:30:13,778 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-24 12:30:13,779 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-24 12:30:13,779 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-24 12:30:13,779 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-24 12:30:13,779 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-24 12:30:13,779 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-10-24 12:30:13,780 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-10-24 12:30:13,780 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-24 12:30:13,780 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-24 12:30:13,780 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-24 12:30:13,780 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-24 12:30:13,780 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-24 12:30:13,781 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-24 12:30:13,781 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-24 12:30:13,781 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-24 12:30:13,781 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-24 12:30:13,782 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-24 12:30:13,782 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-24 12:30:13,783 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-24 12:30:13,976 INFO L238 CfgBuilder]: Building ICFG [2024-10-24 12:30:13,979 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-24 12:30:14,393 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-24 12:30:14,394 INFO L287 CfgBuilder]: Performing block encoding [2024-10-24 12:30:14,666 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-24 12:30:14,667 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-24 12:30:14,668 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 12:30:14 BoogieIcfgContainer [2024-10-24 12:30:14,669 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-24 12:30:14,672 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-24 12:30:14,672 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-24 12:30:14,676 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-24 12:30:14,676 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 12:30:13" (1/3) ... [2024-10-24 12:30:14,677 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2393f2f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 12:30:14, skipping insertion in model container [2024-10-24 12:30:14,678 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:30:13" (2/3) ... [2024-10-24 12:30:14,678 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2393f2f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 12:30:14, skipping insertion in model container [2024-10-24 12:30:14,678 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 12:30:14" (3/3) ... [2024-10-24 12:30:14,681 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-lamport.wvr.c [2024-10-24 12:30:14,698 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-24 12:30:14,699 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-24 12:30:14,699 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-24 12:30:14,737 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-10-24 12:30:14,768 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 56 places, 47 transitions, 115 flow [2024-10-24 12:30:14,796 INFO L124 PetriNetUnfolderBase]: 1/44 cut-off events. [2024-10-24 12:30:14,796 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-24 12:30:14,799 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57 conditions, 44 events. 1/44 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 60 event pairs, 0 based on Foata normal form. 0/42 useless extension candidates. Maximal degree in co-relation 35. Up to 2 conditions per place. [2024-10-24 12:30:14,799 INFO L82 GeneralOperation]: Start removeDead. Operand has 56 places, 47 transitions, 115 flow [2024-10-24 12:30:14,802 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 52 places, 43 transitions, 104 flow [2024-10-24 12:30:14,810 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 12:30:14,816 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;@4f935273, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 12:30:14,816 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-10-24 12:30:14,830 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-24 12:30:14,830 INFO L124 PetriNetUnfolderBase]: 1/42 cut-off events. [2024-10-24 12:30:14,831 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-24 12:30:14,831 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:30:14,832 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:30:14,832 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)] === [2024-10-24 12:30:14,837 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:30:14,838 INFO L85 PathProgramCache]: Analyzing trace with hash 1033759554, now seen corresponding path program 1 times [2024-10-24 12:30:14,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:30:14,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654333812] [2024-10-24 12:30:14,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:30:14,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:30:15,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:30:15,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 12:30:15,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:30:15,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654333812] [2024-10-24 12:30:15,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1654333812] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:30:15,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:30:15,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 12:30:15,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890281670] [2024-10-24 12:30:15,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:30:15,345 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 12:30:15,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:30:15,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 12:30:15,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 12:30:15,377 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 47 [2024-10-24 12:30:15,379 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 43 transitions, 104 flow. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 12:30:15,380 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:30:15,380 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 47 [2024-10-24 12:30:15,381 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:30:15,748 INFO L124 PetriNetUnfolderBase]: 893/1581 cut-off events. [2024-10-24 12:30:15,751 INFO L125 PetriNetUnfolderBase]: For 92/92 co-relation queries the response was YES. [2024-10-24 12:30:15,765 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3085 conditions, 1581 events. 893/1581 cut-off events. For 92/92 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 9098 event pairs, 892 based on Foata normal form. 0/1538 useless extension candidates. Maximal degree in co-relation 2851. Up to 1377 conditions per place. [2024-10-24 12:30:15,779 INFO L140 encePairwiseOnDemand]: 44/47 looper letters, 26 selfloop transitions, 2 changer transitions 0/44 dead transitions. [2024-10-24 12:30:15,779 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 44 transitions, 162 flow [2024-10-24 12:30:15,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 12:30:15,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-24 12:30:15,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 86 transitions. [2024-10-24 12:30:15,795 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6099290780141844 [2024-10-24 12:30:15,796 INFO L175 Difference]: Start difference. First operand has 52 places, 43 transitions, 104 flow. Second operand 3 states and 86 transitions. [2024-10-24 12:30:15,797 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 44 transitions, 162 flow [2024-10-24 12:30:15,801 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 44 transitions, 150 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-10-24 12:30:15,804 INFO L231 Difference]: Finished difference. Result has 49 places, 44 transitions, 104 flow [2024-10-24 12:30:15,806 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=104, PETRI_PLACES=49, PETRI_TRANSITIONS=44} [2024-10-24 12:30:15,809 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, -3 predicate places. [2024-10-24 12:30:15,810 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 44 transitions, 104 flow [2024-10-24 12:30:15,810 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 12:30:15,810 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:30:15,810 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:30:15,811 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-24 12:30:15,811 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)] === [2024-10-24 12:30:15,812 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:30:15,812 INFO L85 PathProgramCache]: Analyzing trace with hash 1217611630, now seen corresponding path program 1 times [2024-10-24 12:30:15,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:30:15,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013649287] [2024-10-24 12:30:15,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:30:15,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:30:15,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:30:16,038 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 12:30:16,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:30:16,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013649287] [2024-10-24 12:30:16,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2013649287] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:30:16,039 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:30:16,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 12:30:16,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744029185] [2024-10-24 12:30:16,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:30:16,042 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 12:30:16,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:30:16,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 12:30:16,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-24 12:30:16,066 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-10-24 12:30:16,066 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 44 transitions, 104 flow. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 7 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) [2024-10-24 12:30:16,067 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:30:16,067 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-10-24 12:30:16,067 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:30:16,901 INFO L124 PetriNetUnfolderBase]: 3808/6261 cut-off events. [2024-10-24 12:30:16,901 INFO L125 PetriNetUnfolderBase]: For 35/35 co-relation queries the response was YES. [2024-10-24 12:30:16,913 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12179 conditions, 6261 events. 3808/6261 cut-off events. For 35/35 co-relation queries the response was YES. Maximal size of possible extension queue 244. Compared 39268 event pairs, 705 based on Foata normal form. 60/6305 useless extension candidates. Maximal degree in co-relation 12168. Up to 1665 conditions per place. [2024-10-24 12:30:16,941 INFO L140 encePairwiseOnDemand]: 39/47 looper letters, 127 selfloop transitions, 16 changer transitions 0/153 dead transitions. [2024-10-24 12:30:16,942 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 153 transitions, 622 flow [2024-10-24 12:30:16,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-24 12:30:16,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-24 12:30:16,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 260 transitions. [2024-10-24 12:30:16,945 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6146572104018913 [2024-10-24 12:30:16,945 INFO L175 Difference]: Start difference. First operand has 49 places, 44 transitions, 104 flow. Second operand 9 states and 260 transitions. [2024-10-24 12:30:16,945 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 153 transitions, 622 flow [2024-10-24 12:30:16,947 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 153 transitions, 618 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-10-24 12:30:16,949 INFO L231 Difference]: Finished difference. Result has 61 places, 58 transitions, 196 flow [2024-10-24 12:30:16,949 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=196, PETRI_PLACES=61, PETRI_TRANSITIONS=58} [2024-10-24 12:30:16,950 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 9 predicate places. [2024-10-24 12:30:16,950 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 58 transitions, 196 flow [2024-10-24 12:30:16,950 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 7 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) [2024-10-24 12:30:16,951 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:30:16,951 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:30:16,951 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-24 12:30:16,951 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)] === [2024-10-24 12:30:16,952 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:30:16,952 INFO L85 PathProgramCache]: Analyzing trace with hash -151464718, now seen corresponding path program 2 times [2024-10-24 12:30:16,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:30:16,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396134263] [2024-10-24 12:30:16,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:30:16,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:30:16,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:30:17,612 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 12:30:17,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:30:17,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396134263] [2024-10-24 12:30:17,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396134263] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 12:30:17,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1681069971] [2024-10-24 12:30:17,613 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-24 12:30:17,614 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 12:30:17,614 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 12:30:17,616 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) [2024-10-24 12:30:17,617 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-24 12:30:17,729 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-10-24 12:30:17,730 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 12:30:17,735 INFO L255 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-24 12:30:17,740 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 12:30:18,023 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-24 12:30:18,024 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2024-10-24 12:30:18,036 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 12:30:18,036 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 12:30:18,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1681069971] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:30:18,037 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 12:30:18,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [11] total 17 [2024-10-24 12:30:18,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796463858] [2024-10-24 12:30:18,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:30:18,038 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-24 12:30:18,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:30:18,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-24 12:30:18,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2024-10-24 12:30:18,048 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-10-24 12:30:18,048 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 58 transitions, 196 flow. Second operand has 8 states, 8 states have (on average 20.625) internal successors, (165), 8 states have internal predecessors, (165), 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) [2024-10-24 12:30:18,049 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:30:18,049 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-10-24 12:30:18,049 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:30:19,037 INFO L124 PetriNetUnfolderBase]: 4271/7048 cut-off events. [2024-10-24 12:30:19,037 INFO L125 PetriNetUnfolderBase]: For 735/735 co-relation queries the response was YES. [2024-10-24 12:30:19,056 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14583 conditions, 7048 events. 4271/7048 cut-off events. For 735/735 co-relation queries the response was YES. Maximal size of possible extension queue 300. Compared 46664 event pairs, 767 based on Foata normal form. 2/6893 useless extension candidates. Maximal degree in co-relation 14562. Up to 3666 conditions per place. [2024-10-24 12:30:19,086 INFO L140 encePairwiseOnDemand]: 39/47 looper letters, 82 selfloop transitions, 16 changer transitions 16/142 dead transitions. [2024-10-24 12:30:19,086 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 142 transitions, 608 flow [2024-10-24 12:30:19,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-24 12:30:19,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-24 12:30:19,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 284 transitions. [2024-10-24 12:30:19,089 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6042553191489362 [2024-10-24 12:30:19,089 INFO L175 Difference]: Start difference. First operand has 61 places, 58 transitions, 196 flow. Second operand 10 states and 284 transitions. [2024-10-24 12:30:19,089 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 142 transitions, 608 flow [2024-10-24 12:30:19,103 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 142 transitions, 608 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-24 12:30:19,105 INFO L231 Difference]: Finished difference. Result has 74 places, 73 transitions, 283 flow [2024-10-24 12:30:19,105 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=283, PETRI_PLACES=74, PETRI_TRANSITIONS=73} [2024-10-24 12:30:19,106 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 22 predicate places. [2024-10-24 12:30:19,106 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 73 transitions, 283 flow [2024-10-24 12:30:19,106 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 20.625) internal successors, (165), 8 states have internal predecessors, (165), 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) [2024-10-24 12:30:19,106 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:30:19,107 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:30:19,126 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-24 12:30:19,307 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 12:30:19,308 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)] === [2024-10-24 12:30:19,309 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:30:19,309 INFO L85 PathProgramCache]: Analyzing trace with hash -1872739512, now seen corresponding path program 3 times [2024-10-24 12:30:19,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:30:19,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772865788] [2024-10-24 12:30:19,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:30:19,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:30:19,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:30:19,723 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 12:30:19,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:30:19,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772865788] [2024-10-24 12:30:19,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1772865788] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 12:30:19,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [585544278] [2024-10-24 12:30:19,724 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-24 12:30:19,724 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 12:30:19,725 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 12:30:19,727 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) [2024-10-24 12:30:19,729 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-24 12:30:19,813 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-10-24 12:30:19,814 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 12:30:19,816 INFO L255 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-24 12:30:19,818 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 12:30:20,090 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-24 12:30:20,090 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2024-10-24 12:30:20,106 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 12:30:20,107 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 12:30:20,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [585544278] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:30:20,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 12:30:20,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [11] total 17 [2024-10-24 12:30:20,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967630659] [2024-10-24 12:30:20,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:30:20,108 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-24 12:30:20,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:30:20,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-24 12:30:20,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2024-10-24 12:30:20,122 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-10-24 12:30:20,123 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 73 transitions, 283 flow. Second operand has 8 states, 8 states have (on average 20.625) internal successors, (165), 8 states have internal predecessors, (165), 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) [2024-10-24 12:30:20,123 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:30:20,123 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-10-24 12:30:20,123 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:30:21,728 INFO L124 PetriNetUnfolderBase]: 7013/11619 cut-off events. [2024-10-24 12:30:21,729 INFO L125 PetriNetUnfolderBase]: For 3192/3192 co-relation queries the response was YES. [2024-10-24 12:30:21,766 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27125 conditions, 11619 events. 7013/11619 cut-off events. For 3192/3192 co-relation queries the response was YES. Maximal size of possible extension queue 507. Compared 84633 event pairs, 1950 based on Foata normal form. 2/11408 useless extension candidates. Maximal degree in co-relation 27098. Up to 5193 conditions per place. [2024-10-24 12:30:21,832 INFO L140 encePairwiseOnDemand]: 39/47 looper letters, 132 selfloop transitions, 25 changer transitions 7/192 dead transitions. [2024-10-24 12:30:21,833 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 192 transitions, 965 flow [2024-10-24 12:30:21,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-24 12:30:21,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-10-24 12:30:21,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 327 transitions. [2024-10-24 12:30:21,837 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.632495164410058 [2024-10-24 12:30:21,837 INFO L175 Difference]: Start difference. First operand has 74 places, 73 transitions, 283 flow. Second operand 11 states and 327 transitions. [2024-10-24 12:30:21,837 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 192 transitions, 965 flow [2024-10-24 12:30:21,863 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 192 transitions, 959 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-10-24 12:30:21,866 INFO L231 Difference]: Finished difference. Result has 89 places, 94 transitions, 503 flow [2024-10-24 12:30:21,866 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=281, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=503, PETRI_PLACES=89, PETRI_TRANSITIONS=94} [2024-10-24 12:30:21,868 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 37 predicate places. [2024-10-24 12:30:21,868 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 94 transitions, 503 flow [2024-10-24 12:30:21,869 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 20.625) internal successors, (165), 8 states have internal predecessors, (165), 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) [2024-10-24 12:30:21,869 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:30:21,869 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:30:21,886 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-24 12:30:22,069 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,SelfDestructingSolverStorable3 [2024-10-24 12:30:22,071 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)] === [2024-10-24 12:30:22,072 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:30:22,073 INFO L85 PathProgramCache]: Analyzing trace with hash 1977101006, now seen corresponding path program 4 times [2024-10-24 12:30:22,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:30:22,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568830900] [2024-10-24 12:30:22,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:30:22,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:30:22,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:30:22,676 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 12:30:22,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:30:22,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568830900] [2024-10-24 12:30:22,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568830900] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 12:30:22,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [869872779] [2024-10-24 12:30:22,678 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-24 12:30:22,678 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 12:30:22,678 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 12:30:22,680 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) [2024-10-24 12:30:22,687 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-24 12:30:22,762 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-24 12:30:22,762 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 12:30:22,765 INFO L255 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-24 12:30:22,768 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 12:30:22,945 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-24 12:30:22,945 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2024-10-24 12:30:22,961 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 12:30:22,962 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 12:30:22,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [869872779] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:30:22,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 12:30:22,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [11] total 17 [2024-10-24 12:30:22,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276936470] [2024-10-24 12:30:22,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:30:22,963 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-24 12:30:22,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:30:22,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-24 12:30:22,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2024-10-24 12:30:22,982 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-10-24 12:30:22,982 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 94 transitions, 503 flow. Second operand has 8 states, 8 states have (on average 20.625) internal successors, (165), 8 states have internal predecessors, (165), 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) [2024-10-24 12:30:22,982 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:30:22,982 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-10-24 12:30:22,983 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:30:25,087 INFO L124 PetriNetUnfolderBase]: 7832/13192 cut-off events. [2024-10-24 12:30:25,087 INFO L125 PetriNetUnfolderBase]: For 11745/11745 co-relation queries the response was YES. [2024-10-24 12:30:25,118 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35044 conditions, 13192 events. 7832/13192 cut-off events. For 11745/11745 co-relation queries the response was YES. Maximal size of possible extension queue 595. Compared 99559 event pairs, 1925 based on Foata normal form. 2/12933 useless extension candidates. Maximal degree in co-relation 35008. Up to 8983 conditions per place. [2024-10-24 12:30:25,163 INFO L140 encePairwiseOnDemand]: 39/47 looper letters, 99 selfloop transitions, 24 changer transitions 18/169 dead transitions. [2024-10-24 12:30:25,164 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 169 transitions, 1041 flow [2024-10-24 12:30:25,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-24 12:30:25,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-24 12:30:25,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 282 transitions. [2024-10-24 12:30:25,165 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6 [2024-10-24 12:30:25,165 INFO L175 Difference]: Start difference. First operand has 89 places, 94 transitions, 503 flow. Second operand 10 states and 282 transitions. [2024-10-24 12:30:25,166 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 169 transitions, 1041 flow [2024-10-24 12:30:25,255 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 169 transitions, 1025 flow, removed 5 selfloop flow, removed 1 redundant places. [2024-10-24 12:30:25,257 INFO L231 Difference]: Finished difference. Result has 100 places, 102 transitions, 626 flow [2024-10-24 12:30:25,258 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=487, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=626, PETRI_PLACES=100, PETRI_TRANSITIONS=102} [2024-10-24 12:30:25,258 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 48 predicate places. [2024-10-24 12:30:25,258 INFO L471 AbstractCegarLoop]: Abstraction has has 100 places, 102 transitions, 626 flow [2024-10-24 12:30:25,259 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 20.625) internal successors, (165), 8 states have internal predecessors, (165), 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) [2024-10-24 12:30:25,259 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:30:25,259 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:30:25,276 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-10-24 12:30:25,463 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 12:30:25,465 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)] === [2024-10-24 12:30:25,465 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:30:25,465 INFO L85 PathProgramCache]: Analyzing trace with hash 1027043792, now seen corresponding path program 5 times [2024-10-24 12:30:25,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:30:25,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744874109] [2024-10-24 12:30:25,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:30:25,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:30:25,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:30:25,900 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 12:30:25,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:30:25,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744874109] [2024-10-24 12:30:25,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1744874109] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 12:30:25,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [299753816] [2024-10-24 12:30:25,901 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-10-24 12:30:25,901 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 12:30:25,902 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 12:30:25,903 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) [2024-10-24 12:30:25,905 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-24 12:30:25,986 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-24 12:30:25,987 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 12:30:25,988 INFO L255 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-10-24 12:30:25,991 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 12:30:26,366 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-24 12:30:26,367 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 18 [2024-10-24 12:30:26,377 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 12:30:26,377 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 12:30:26,618 INFO L349 Elim1Store]: treesize reduction 10, result has 84.6 percent of original size [2024-10-24 12:30:26,618 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 60 treesize of output 82 [2024-10-24 12:30:26,738 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 12:30:26,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [299753816] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-24 12:30:26,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-24 12:30:26,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [11, 11] total 27 [2024-10-24 12:30:26,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374354233] [2024-10-24 12:30:26,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:30:26,740 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-24 12:30:26,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:30:26,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-24 12:30:26,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=601, Unknown=0, NotChecked=0, Total=702 [2024-10-24 12:30:26,753 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-10-24 12:30:26,753 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 102 transitions, 626 flow. Second operand has 10 states, 10 states have (on average 19.9) internal successors, (199), 10 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 12:30:26,753 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:30:26,754 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-10-24 12:30:26,754 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:30:29,526 INFO L124 PetriNetUnfolderBase]: 8771/14839 cut-off events. [2024-10-24 12:30:29,526 INFO L125 PetriNetUnfolderBase]: For 16367/16367 co-relation queries the response was YES. [2024-10-24 12:30:29,712 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40492 conditions, 14839 events. 8771/14839 cut-off events. For 16367/16367 co-relation queries the response was YES. Maximal size of possible extension queue 731. Compared 115557 event pairs, 2074 based on Foata normal form. 2/14582 useless extension candidates. Maximal degree in co-relation 40452. Up to 7190 conditions per place. [2024-10-24 12:30:29,843 INFO L140 encePairwiseOnDemand]: 37/47 looper letters, 160 selfloop transitions, 45 changer transitions 16/249 dead transitions. [2024-10-24 12:30:29,847 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 249 transitions, 1587 flow [2024-10-24 12:30:29,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-10-24 12:30:29,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-10-24 12:30:29,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 483 transitions. [2024-10-24 12:30:29,850 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.60450563204005 [2024-10-24 12:30:29,850 INFO L175 Difference]: Start difference. First operand has 100 places, 102 transitions, 626 flow. Second operand 17 states and 483 transitions. [2024-10-24 12:30:29,850 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 249 transitions, 1587 flow [2024-10-24 12:30:30,177 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 249 transitions, 1509 flow, removed 28 selfloop flow, removed 3 redundant places. [2024-10-24 12:30:30,184 INFO L231 Difference]: Finished difference. Result has 119 places, 119 transitions, 835 flow [2024-10-24 12:30:30,186 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=564, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=835, PETRI_PLACES=119, PETRI_TRANSITIONS=119} [2024-10-24 12:30:30,186 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 67 predicate places. [2024-10-24 12:30:30,191 INFO L471 AbstractCegarLoop]: Abstraction has has 119 places, 119 transitions, 835 flow [2024-10-24 12:30:30,192 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 19.9) internal successors, (199), 10 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 12:30:30,192 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:30:30,192 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:30:30,233 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-24 12:30:30,393 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 12:30:30,395 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)] === [2024-10-24 12:30:30,395 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:30:30,395 INFO L85 PathProgramCache]: Analyzing trace with hash -13104374, now seen corresponding path program 6 times [2024-10-24 12:30:30,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:30:30,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753072502] [2024-10-24 12:30:30,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:30:30,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:30:30,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:30:31,435 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 12:30:31,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:30:31,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753072502] [2024-10-24 12:30:31,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753072502] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 12:30:31,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1723582002] [2024-10-24 12:30:31,440 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-10-24 12:30:31,440 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 12:30:31,440 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 12:30:31,444 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) [2024-10-24 12:30:31,453 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-24 12:30:31,615 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2024-10-24 12:30:31,615 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 12:30:31,617 INFO L255 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-24 12:30:31,620 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 12:30:32,045 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-24 12:30:32,046 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2024-10-24 12:30:32,057 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 12:30:32,057 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 12:30:32,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1723582002] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:30:32,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 12:30:32,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [11] total 17 [2024-10-24 12:30:32,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845564785] [2024-10-24 12:30:32,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:30:32,059 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-24 12:30:32,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:30:32,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-24 12:30:32,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2024-10-24 12:30:32,088 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-10-24 12:30:32,088 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 119 transitions, 835 flow. Second operand has 8 states, 8 states have (on average 20.625) internal successors, (165), 8 states have internal predecessors, (165), 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) [2024-10-24 12:30:32,092 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:30:32,092 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-10-24 12:30:32,092 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:30:34,870 INFO L124 PetriNetUnfolderBase]: 9302/15780 cut-off events. [2024-10-24 12:30:34,871 INFO L125 PetriNetUnfolderBase]: For 26260/26260 co-relation queries the response was YES. [2024-10-24 12:30:34,964 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47330 conditions, 15780 events. 9302/15780 cut-off events. For 26260/26260 co-relation queries the response was YES. Maximal size of possible extension queue 817. Compared 124496 event pairs, 2831 based on Foata normal form. 2/15483 useless extension candidates. Maximal degree in co-relation 47282. Up to 10406 conditions per place. [2024-10-24 12:30:35,024 INFO L140 encePairwiseOnDemand]: 39/47 looper letters, 125 selfloop transitions, 35 changer transitions 9/197 dead transitions. [2024-10-24 12:30:35,024 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 197 transitions, 1484 flow [2024-10-24 12:30:35,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-24 12:30:35,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-24 12:30:35,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 290 transitions. [2024-10-24 12:30:35,026 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6170212765957447 [2024-10-24 12:30:35,026 INFO L175 Difference]: Start difference. First operand has 119 places, 119 transitions, 835 flow. Second operand 10 states and 290 transitions. [2024-10-24 12:30:35,026 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 197 transitions, 1484 flow [2024-10-24 12:30:35,248 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 197 transitions, 1365 flow, removed 35 selfloop flow, removed 7 redundant places. [2024-10-24 12:30:35,251 INFO L231 Difference]: Finished difference. Result has 122 places, 127 transitions, 920 flow [2024-10-24 12:30:35,251 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=730, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=920, PETRI_PLACES=122, PETRI_TRANSITIONS=127} [2024-10-24 12:30:35,252 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 70 predicate places. [2024-10-24 12:30:35,253 INFO L471 AbstractCegarLoop]: Abstraction has has 122 places, 127 transitions, 920 flow [2024-10-24 12:30:35,253 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 20.625) internal successors, (165), 8 states have internal predecessors, (165), 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) [2024-10-24 12:30:35,253 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:30:35,254 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:30:35,273 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-10-24 12:30:35,457 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 12:30:35,458 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)] === [2024-10-24 12:30:35,458 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:30:35,458 INFO L85 PathProgramCache]: Analyzing trace with hash -715138332, now seen corresponding path program 7 times [2024-10-24 12:30:35,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:30:35,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126976588] [2024-10-24 12:30:35,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:30:35,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:30:35,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:30:36,046 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 12:30:36,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:30:36,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126976588] [2024-10-24 12:30:36,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126976588] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 12:30:36,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1576712044] [2024-10-24 12:30:36,047 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-10-24 12:30:36,048 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 12:30:36,048 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 12:30:36,049 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) [2024-10-24 12:30:36,051 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-24 12:30:36,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:30:36,138 INFO L255 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-10-24 12:30:36,140 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 12:30:36,156 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 [2024-10-24 12:30:36,656 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 12:30:36,656 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 12:30:37,547 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 70 treesize of output 62 [2024-10-24 12:30:37,579 INFO L349 Elim1Store]: treesize reduction 5, result has 80.0 percent of original size [2024-10-24 12:30:37,580 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 104 treesize of output 87 [2024-10-24 12:30:37,828 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 12:30:37,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1576712044] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 12:30:37,829 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 12:30:37,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 12] total 30 [2024-10-24 12:30:37,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75384763] [2024-10-24 12:30:37,830 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 12:30:37,830 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-10-24 12:30:37,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:30:37,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-10-24 12:30:37,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=762, Unknown=0, NotChecked=0, Total=930 [2024-10-24 12:30:37,896 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-10-24 12:30:37,897 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 127 transitions, 920 flow. Second operand has 31 states, 31 states have (on average 19.516129032258064) internal successors, (605), 31 states have internal predecessors, (605), 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) [2024-10-24 12:30:37,897 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:30:37,897 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-10-24 12:30:37,897 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:30:46,519 INFO L124 PetriNetUnfolderBase]: 30115/52187 cut-off events. [2024-10-24 12:30:46,519 INFO L125 PetriNetUnfolderBase]: For 84741/84741 co-relation queries the response was YES. [2024-10-24 12:30:46,962 INFO L83 FinitePrefix]: Finished finitePrefix Result has 153909 conditions, 52187 events. 30115/52187 cut-off events. For 84741/84741 co-relation queries the response was YES. Maximal size of possible extension queue 3269. Compared 503816 event pairs, 7248 based on Foata normal form. 56/51463 useless extension candidates. Maximal degree in co-relation 150755. Up to 10705 conditions per place. [2024-10-24 12:30:47,248 INFO L140 encePairwiseOnDemand]: 34/47 looper letters, 304 selfloop transitions, 141 changer transitions 142/615 dead transitions. [2024-10-24 12:30:47,248 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 615 transitions, 5180 flow [2024-10-24 12:30:47,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-10-24 12:30:47,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2024-10-24 12:30:47,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 847 transitions. [2024-10-24 12:30:47,255 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6214233308877476 [2024-10-24 12:30:47,256 INFO L175 Difference]: Start difference. First operand has 122 places, 127 transitions, 920 flow. Second operand 29 states and 847 transitions. [2024-10-24 12:30:47,256 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 615 transitions, 5180 flow [2024-10-24 12:30:49,720 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 615 transitions, 4888 flow, removed 126 selfloop flow, removed 2 redundant places. [2024-10-24 12:30:49,730 INFO L231 Difference]: Finished difference. Result has 170 places, 242 transitions, 2627 flow [2024-10-24 12:30:49,731 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=858, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=2627, PETRI_PLACES=170, PETRI_TRANSITIONS=242} [2024-10-24 12:30:49,731 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 118 predicate places. [2024-10-24 12:30:49,731 INFO L471 AbstractCegarLoop]: Abstraction has has 170 places, 242 transitions, 2627 flow [2024-10-24 12:30:49,732 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 19.516129032258064) internal successors, (605), 31 states have internal predecessors, (605), 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) [2024-10-24 12:30:49,732 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:30:49,732 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:30:49,750 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-10-24 12:30:49,932 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 12:30:49,933 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)] === [2024-10-24 12:30:49,934 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:30:49,934 INFO L85 PathProgramCache]: Analyzing trace with hash 1516617366, now seen corresponding path program 8 times [2024-10-24 12:30:49,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:30:49,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881134836] [2024-10-24 12:30:49,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:30:49,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:30:49,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:30:50,039 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 12:30:50,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:30:50,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881134836] [2024-10-24 12:30:50,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [881134836] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:30:50,039 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:30:50,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 12:30:50,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279341112] [2024-10-24 12:30:50,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:30:50,040 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 12:30:50,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:30:50,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 12:30:50,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 12:30:50,044 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-10-24 12:30:50,044 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 242 transitions, 2627 flow. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 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) [2024-10-24 12:30:50,045 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:30:50,045 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-10-24 12:30:50,045 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:30:58,502 INFO L124 PetriNetUnfolderBase]: 22501/40114 cut-off events. [2024-10-24 12:30:58,502 INFO L125 PetriNetUnfolderBase]: For 275662/276970 co-relation queries the response was YES. [2024-10-24 12:30:59,084 INFO L83 FinitePrefix]: Finished finitePrefix Result has 170381 conditions, 40114 events. 22501/40114 cut-off events. For 275662/276970 co-relation queries the response was YES. Maximal size of possible extension queue 2207. Compared 381556 event pairs, 17474 based on Foata normal form. 254/39291 useless extension candidates. Maximal degree in co-relation 169773. Up to 34038 conditions per place. [2024-10-24 12:30:59,265 INFO L140 encePairwiseOnDemand]: 44/47 looper letters, 218 selfloop transitions, 2 changer transitions 17/282 dead transitions. [2024-10-24 12:30:59,266 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 282 transitions, 3489 flow [2024-10-24 12:30:59,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 12:30:59,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-24 12:30:59,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 94 transitions. [2024-10-24 12:30:59,272 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-10-24 12:30:59,272 INFO L175 Difference]: Start difference. First operand has 170 places, 242 transitions, 2627 flow. Second operand 3 states and 94 transitions. [2024-10-24 12:30:59,274 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 282 transitions, 3489 flow [2024-10-24 12:31:02,234 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 282 transitions, 3369 flow, removed 59 selfloop flow, removed 2 redundant places. [2024-10-24 12:31:02,240 INFO L231 Difference]: Finished difference. Result has 170 places, 235 transitions, 2442 flow [2024-10-24 12:31:02,240 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2515, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=2442, PETRI_PLACES=170, PETRI_TRANSITIONS=235} [2024-10-24 12:31:02,241 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 118 predicate places. [2024-10-24 12:31:02,241 INFO L471 AbstractCegarLoop]: Abstraction has has 170 places, 235 transitions, 2442 flow [2024-10-24 12:31:02,241 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 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) [2024-10-24 12:31:02,242 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:31:02,242 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:31:02,242 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-24 12:31:02,242 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)] === [2024-10-24 12:31:02,242 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:31:02,243 INFO L85 PathProgramCache]: Analyzing trace with hash 28533214, now seen corresponding path program 9 times [2024-10-24 12:31:02,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:31:02,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048528290] [2024-10-24 12:31:02,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:31:02,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:31:02,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:31:02,655 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 12:31:02,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:31:02,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048528290] [2024-10-24 12:31:02,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1048528290] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 12:31:02,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [667050658] [2024-10-24 12:31:02,656 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-24 12:31:02,657 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 12:31:02,657 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 12:31:02,659 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) [2024-10-24 12:31:02,668 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-24 12:31:02,753 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-10-24 12:31:02,753 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 12:31:02,755 INFO L255 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-24 12:31:02,757 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 12:31:02,944 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-24 12:31:02,945 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2024-10-24 12:31:02,954 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 12:31:02,955 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 12:31:02,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [667050658] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:31:02,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 12:31:02,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [11] total 17 [2024-10-24 12:31:02,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918925652] [2024-10-24 12:31:02,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:31:02,956 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-24 12:31:02,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:31:02,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-24 12:31:02,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2024-10-24 12:31:02,971 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-10-24 12:31:02,972 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 235 transitions, 2442 flow. Second operand has 8 states, 8 states have (on average 20.625) internal successors, (165), 8 states have internal predecessors, (165), 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) [2024-10-24 12:31:02,972 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:31:02,972 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-10-24 12:31:02,972 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:31:11,220 INFO L124 PetriNetUnfolderBase]: 22476/38870 cut-off events. [2024-10-24 12:31:11,220 INFO L125 PetriNetUnfolderBase]: For 263010/263020 co-relation queries the response was YES. [2024-10-24 12:31:11,783 INFO L83 FinitePrefix]: Finished finitePrefix Result has 168809 conditions, 38870 events. 22476/38870 cut-off events. For 263010/263020 co-relation queries the response was YES. Maximal size of possible extension queue 2243. Compared 357898 event pairs, 7027 based on Foata normal form. 4/38006 useless extension candidates. Maximal degree in co-relation 165879. Up to 25784 conditions per place. [2024-10-24 12:31:11,941 INFO L140 encePairwiseOnDemand]: 39/47 looper letters, 181 selfloop transitions, 67 changer transitions 66/342 dead transitions. [2024-10-24 12:31:11,942 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 342 transitions, 3815 flow [2024-10-24 12:31:11,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-24 12:31:11,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-10-24 12:31:11,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 339 transitions. [2024-10-24 12:31:11,944 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.601063829787234 [2024-10-24 12:31:11,946 INFO L175 Difference]: Start difference. First operand has 170 places, 235 transitions, 2442 flow. Second operand 12 states and 339 transitions. [2024-10-24 12:31:11,946 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 342 transitions, 3815 flow [2024-10-24 12:31:14,876 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 342 transitions, 3787 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-10-24 12:31:14,883 INFO L231 Difference]: Finished difference. Result has 178 places, 204 transitions, 2214 flow [2024-10-24 12:31:14,885 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=2414, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2214, PETRI_PLACES=178, PETRI_TRANSITIONS=204} [2024-10-24 12:31:14,886 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 126 predicate places. [2024-10-24 12:31:14,886 INFO L471 AbstractCegarLoop]: Abstraction has has 178 places, 204 transitions, 2214 flow [2024-10-24 12:31:14,886 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 20.625) internal successors, (165), 8 states have internal predecessors, (165), 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) [2024-10-24 12:31:14,888 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:31:14,888 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:31:14,906 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-10-24 12:31:15,088 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 12:31:15,089 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)] === [2024-10-24 12:31:15,091 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:31:15,091 INFO L85 PathProgramCache]: Analyzing trace with hash 627313246, now seen corresponding path program 10 times [2024-10-24 12:31:15,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:31:15,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440502143] [2024-10-24 12:31:15,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:31:15,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:31:15,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:31:15,772 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 12:31:15,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:31:15,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440502143] [2024-10-24 12:31:15,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440502143] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 12:31:15,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1657772562] [2024-10-24 12:31:15,775 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-10-24 12:31:15,775 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 12:31:15,779 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 12:31:15,781 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) [2024-10-24 12:31:15,791 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-24 12:31:15,869 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-10-24 12:31:15,870 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-24 12:31:15,871 INFO L255 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-24 12:31:15,873 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 12:31:16,155 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-24 12:31:16,155 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 26 [2024-10-24 12:31:16,173 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 12:31:16,173 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 12:31:16,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1657772562] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:31:16,173 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-24 12:31:16,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [11] total 17 [2024-10-24 12:31:16,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88662219] [2024-10-24 12:31:16,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:31:16,174 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-24 12:31:16,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:31:16,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-24 12:31:16,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=232, Unknown=0, NotChecked=0, Total=272 [2024-10-24 12:31:16,194 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-10-24 12:31:16,195 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 204 transitions, 2214 flow. Second operand has 8 states, 8 states have (on average 20.625) internal successors, (165), 8 states have internal predecessors, (165), 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) [2024-10-24 12:31:16,195 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:31:16,195 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-10-24 12:31:16,195 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 12:31:23,815 INFO L124 PetriNetUnfolderBase]: 20868/36156 cut-off events. [2024-10-24 12:31:23,815 INFO L125 PetriNetUnfolderBase]: For 259552/259562 co-relation queries the response was YES. [2024-10-24 12:31:24,331 INFO L83 FinitePrefix]: Finished finitePrefix Result has 160314 conditions, 36156 events. 20868/36156 cut-off events. For 259552/259562 co-relation queries the response was YES. Maximal size of possible extension queue 2070. Compared 329408 event pairs, 6807 based on Foata normal form. 4/35283 useless extension candidates. Maximal degree in co-relation 158267. Up to 24051 conditions per place. [2024-10-24 12:31:24,475 INFO L140 encePairwiseOnDemand]: 39/47 looper letters, 163 selfloop transitions, 61 changer transitions 27/279 dead transitions. [2024-10-24 12:31:24,477 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 279 transitions, 3217 flow [2024-10-24 12:31:24,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-24 12:31:24,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-10-24 12:31:24,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 285 transitions. [2024-10-24 12:31:24,478 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6063829787234043 [2024-10-24 12:31:24,478 INFO L175 Difference]: Start difference. First operand has 178 places, 204 transitions, 2214 flow. Second operand 10 states and 285 transitions. [2024-10-24 12:31:24,478 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 279 transitions, 3217 flow [2024-10-24 12:31:26,420 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 279 transitions, 2926 flow, removed 51 selfloop flow, removed 15 redundant places. [2024-10-24 12:31:26,432 INFO L231 Difference]: Finished difference. Result has 171 places, 198 transitions, 2045 flow [2024-10-24 12:31:26,432 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=1971, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2045, PETRI_PLACES=171, PETRI_TRANSITIONS=198} [2024-10-24 12:31:26,433 INFO L277 CegarLoopForPetriNet]: 52 programPoint places, 119 predicate places. [2024-10-24 12:31:26,433 INFO L471 AbstractCegarLoop]: Abstraction has has 171 places, 198 transitions, 2045 flow [2024-10-24 12:31:26,433 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 20.625) internal successors, (165), 8 states have internal predecessors, (165), 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) [2024-10-24 12:31:26,433 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 12:31:26,433 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 12:31:26,450 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-10-24 12:31:26,634 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,SelfDestructingSolverStorable10 [2024-10-24 12:31:26,635 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)] === [2024-10-24 12:31:26,635 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 12:31:26,636 INFO L85 PathProgramCache]: Analyzing trace with hash 1052148728, now seen corresponding path program 11 times [2024-10-24 12:31:26,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 12:31:26,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687415723] [2024-10-24 12:31:26,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 12:31:26,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 12:31:26,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 12:31:26,795 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 12:31:26,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 12:31:26,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687415723] [2024-10-24 12:31:26,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1687415723] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 12:31:26,796 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 12:31:26,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-24 12:31:26,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011057452] [2024-10-24 12:31:26,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 12:31:26,796 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 12:31:26,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 12:31:26,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 12:31:26,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-24 12:31:26,808 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 47 [2024-10-24 12:31:26,808 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 198 transitions, 2045 flow. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 7 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) [2024-10-24 12:31:26,808 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 12:31:26,808 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 47 [2024-10-24 12:31:26,809 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand