./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/popl20-simple-array-sum.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 023d838f Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/popl20-simple-array-sum.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 0c7c5c48eda3eba87519854c38b7495ee97c35417d2a6e287791b53fe49d6c07 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-10 10:36:11,215 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-10 10:36:11,263 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-10 10:36:11,268 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-10 10:36:11,270 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-10 10:36:11,303 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-10 10:36:11,305 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-10 10:36:11,306 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-10 10:36:11,306 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-10 10:36:11,307 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-10 10:36:11,308 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-10 10:36:11,308 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-10 10:36:11,308 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-10 10:36:11,309 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-10 10:36:11,309 INFO L153 SettingsManager]: * Use SBE=true [2024-11-10 10:36:11,310 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-10 10:36:11,310 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-10 10:36:11,311 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-10 10:36:11,311 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-10 10:36:11,311 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-10 10:36:11,311 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-10 10:36:11,312 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-10 10:36:11,312 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-10 10:36:11,312 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-10 10:36:11,315 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-10 10:36:11,315 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-10 10:36:11,315 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-10 10:36:11,315 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-10 10:36:11,315 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-10 10:36:11,316 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-10 10:36:11,327 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-10 10:36:11,328 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-10 10:36:11,328 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 10:36:11,328 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-10 10:36:11,328 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-10 10:36:11,328 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-10 10:36:11,328 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-10 10:36:11,328 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-10 10:36:11,329 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-10 10:36:11,329 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-10 10:36:11,329 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-10 10:36:11,332 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-10 10:36:11,332 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0c7c5c48eda3eba87519854c38b7495ee97c35417d2a6e287791b53fe49d6c07 [2024-11-10 10:36:11,519 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-10 10:36:11,539 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-10 10:36:11,542 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-10 10:36:11,543 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-10 10:36:11,543 INFO L274 PluginConnector]: CDTParser initialized [2024-11-10 10:36:11,544 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-simple-array-sum.wvr.c [2024-11-10 10:36:12,768 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-10 10:36:12,917 INFO L384 CDTParser]: Found 1 translation units. [2024-11-10 10:36:12,918 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-simple-array-sum.wvr.c [2024-11-10 10:36:12,924 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ec49f30bb/3edcfe166b6642babf6357cfdad249d4/FLAG2f50ed8e5 [2024-11-10 10:36:13,318 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ec49f30bb/3edcfe166b6642babf6357cfdad249d4 [2024-11-10 10:36:13,320 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-10 10:36:13,321 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-10 10:36:13,322 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-10 10:36:13,322 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-10 10:36:13,325 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-10 10:36:13,326 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 10:36:13" (1/1) ... [2024-11-10 10:36:13,326 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c023df7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:36:13, skipping insertion in model container [2024-11-10 10:36:13,327 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 10:36:13" (1/1) ... [2024-11-10 10:36:13,344 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-10 10:36:13,510 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-simple-array-sum.wvr.c[2429,2442] [2024-11-10 10:36:13,517 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 10:36:13,523 INFO L200 MainTranslator]: Completed pre-run [2024-11-10 10:36:13,540 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-simple-array-sum.wvr.c[2429,2442] [2024-11-10 10:36:13,543 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 10:36:13,556 INFO L204 MainTranslator]: Completed translation [2024-11-10 10:36:13,556 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:36:13 WrapperNode [2024-11-10 10:36:13,557 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-10 10:36:13,557 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-10 10:36:13,557 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-10 10:36:13,558 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-10 10:36:13,562 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:36:13" (1/1) ... [2024-11-10 10:36:13,567 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:36:13" (1/1) ... [2024-11-10 10:36:13,581 INFO L138 Inliner]: procedures = 23, calls = 20, calls flagged for inlining = 7, calls inlined = 9, statements flattened = 107 [2024-11-10 10:36:13,581 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-10 10:36:13,582 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-10 10:36:13,582 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-10 10:36:13,582 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-10 10:36:13,599 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:36:13" (1/1) ... [2024-11-10 10:36:13,600 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:36:13" (1/1) ... [2024-11-10 10:36:13,602 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:36:13" (1/1) ... [2024-11-10 10:36:13,624 INFO L175 MemorySlicer]: Split 8 memory accesses to 2 slices as follows [2, 6]. 75 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 3 writes are split as follows [0, 3]. [2024-11-10 10:36:13,628 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:36:13" (1/1) ... [2024-11-10 10:36:13,628 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:36:13" (1/1) ... [2024-11-10 10:36:13,633 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:36:13" (1/1) ... [2024-11-10 10:36:13,636 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:36:13" (1/1) ... [2024-11-10 10:36:13,639 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:36:13" (1/1) ... [2024-11-10 10:36:13,640 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:36:13" (1/1) ... [2024-11-10 10:36:13,644 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-10 10:36:13,645 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-10 10:36:13,645 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-10 10:36:13,656 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-10 10:36:13,656 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:36:13" (1/1) ... [2024-11-10 10:36:13,660 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 10:36:13,667 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:36:13,678 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-10 10:36:13,680 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-10 10:36:13,713 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-10 10:36:13,713 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-10 10:36:13,713 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-10 10:36:13,713 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-10 10:36:13,713 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-10 10:36:13,713 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-10 10:36:13,713 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-10 10:36:13,714 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-10 10:36:13,714 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-10 10:36:13,714 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-10 10:36:13,714 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-10 10:36:13,714 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-10 10:36:13,714 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-10 10:36:13,714 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-10 10:36:13,714 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-10 10:36:13,714 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-10 10:36:13,715 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-10 10:36:13,794 INFO L256 CfgBuilder]: Building ICFG [2024-11-10 10:36:13,796 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-10 10:36:13,984 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-10 10:36:13,985 INFO L307 CfgBuilder]: Performing block encoding [2024-11-10 10:36:14,142 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-10 10:36:14,142 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-10 10:36:14,143 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 10:36:14 BoogieIcfgContainer [2024-11-10 10:36:14,143 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-10 10:36:14,145 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-10 10:36:14,145 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-10 10:36:14,148 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-10 10:36:14,148 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 10:36:13" (1/3) ... [2024-11-10 10:36:14,150 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52df0d8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 10:36:14, skipping insertion in model container [2024-11-10 10:36:14,150 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:36:13" (2/3) ... [2024-11-10 10:36:14,150 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52df0d8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 10:36:14, skipping insertion in model container [2024-11-10 10:36:14,150 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 10:36:14" (3/3) ... [2024-11-10 10:36:14,151 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-simple-array-sum.wvr.c [2024-11-10 10:36:14,163 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-10 10:36:14,163 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-10 10:36:14,163 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-10 10:36:14,204 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-10 10:36:14,235 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 55 places, 56 transitions, 133 flow [2024-11-10 10:36:14,263 INFO L124 PetriNetUnfolderBase]: 11/53 cut-off events. [2024-11-10 10:36:14,267 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-10 10:36:14,272 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66 conditions, 53 events. 11/53 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 92 event pairs, 0 based on Foata normal form. 0/41 useless extension candidates. Maximal degree in co-relation 39. Up to 3 conditions per place. [2024-11-10 10:36:14,272 INFO L82 GeneralOperation]: Start removeDead. Operand has 55 places, 56 transitions, 133 flow [2024-11-10 10:36:14,274 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 51 places, 52 transitions, 122 flow [2024-11-10 10:36:14,284 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 10:36:14,291 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;@4812b8c1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 10:36:14,291 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-10 10:36:14,307 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 10:36:14,307 INFO L124 PetriNetUnfolderBase]: 11/51 cut-off events. [2024-11-10 10:36:14,308 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-10 10:36:14,308 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:36:14,308 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] [2024-11-10 10:36:14,309 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-10 10:36:14,312 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:36:14,313 INFO L85 PathProgramCache]: Analyzing trace with hash 1378798194, now seen corresponding path program 1 times [2024-11-10 10:36:14,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:36:14,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701809115] [2024-11-10 10:36:14,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:36:14,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:36:14,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:36:14,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:36:14,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:36:14,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701809115] [2024-11-10 10:36:14,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701809115] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:36:14,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:36:14,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 10:36:14,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210978979] [2024-11-10 10:36:14,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:36:14,507 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-10 10:36:14,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:36:14,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-10 10:36:14,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-10 10:36:14,546 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 56 [2024-11-10 10:36:14,548 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 52 transitions, 122 flow. Second operand has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:36:14,548 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:36:14,548 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 56 [2024-11-10 10:36:14,549 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:36:14,759 INFO L124 PetriNetUnfolderBase]: 804/1340 cut-off events. [2024-11-10 10:36:14,760 INFO L125 PetriNetUnfolderBase]: For 110/110 co-relation queries the response was YES. [2024-11-10 10:36:14,765 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2547 conditions, 1340 events. 804/1340 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 7178 event pairs, 588 based on Foata normal form. 184/1397 useless extension candidates. Maximal degree in co-relation 2283. Up to 1109 conditions per place. [2024-11-10 10:36:14,775 INFO L140 encePairwiseOnDemand]: 51/56 looper letters, 30 selfloop transitions, 0 changer transitions 0/47 dead transitions. [2024-11-10 10:36:14,775 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 47 transitions, 172 flow [2024-11-10 10:36:14,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-10 10:36:14,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-10 10:36:14,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 75 transitions. [2024-11-10 10:36:14,785 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6696428571428571 [2024-11-10 10:36:14,786 INFO L175 Difference]: Start difference. First operand has 51 places, 52 transitions, 122 flow. Second operand 2 states and 75 transitions. [2024-11-10 10:36:14,787 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 47 transitions, 172 flow [2024-11-10 10:36:14,790 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 47 transitions, 160 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-10 10:36:14,791 INFO L231 Difference]: Finished difference. Result has 46 places, 47 transitions, 100 flow [2024-11-10 10:36:14,793 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=100, PETRI_PLACES=46, PETRI_TRANSITIONS=47} [2024-11-10 10:36:14,797 INFO L277 CegarLoopForPetriNet]: 51 programPoint places, -5 predicate places. [2024-11-10 10:36:14,797 INFO L471 AbstractCegarLoop]: Abstraction has has 46 places, 47 transitions, 100 flow [2024-11-10 10:36:14,798 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 32.0) internal successors, (64), 2 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:36:14,798 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:36:14,798 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] [2024-11-10 10:36:14,798 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-10 10:36:14,798 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-10 10:36:14,799 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:36:14,799 INFO L85 PathProgramCache]: Analyzing trace with hash 225812900, now seen corresponding path program 1 times [2024-11-10 10:36:14,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:36:14,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421042723] [2024-11-10 10:36:14,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:36:14,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:36:14,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:36:15,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:36:15,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:36:15,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421042723] [2024-11-10 10:36:15,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1421042723] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:36:15,278 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:36:15,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 10:36:15,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69593392] [2024-11-10 10:36:15,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:36:15,279 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 10:36:15,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:36:15,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 10:36:15,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 10:36:15,318 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 56 [2024-11-10 10:36:15,318 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 47 transitions, 100 flow. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:36:15,318 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:36:15,318 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 56 [2024-11-10 10:36:15,318 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:36:15,540 INFO L124 PetriNetUnfolderBase]: 1474/2489 cut-off events. [2024-11-10 10:36:15,540 INFO L125 PetriNetUnfolderBase]: For 47/47 co-relation queries the response was YES. [2024-11-10 10:36:15,544 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4580 conditions, 2489 events. 1474/2489 cut-off events. For 47/47 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 15325 event pairs, 952 based on Foata normal form. 1/2250 useless extension candidates. Maximal degree in co-relation 4577. Up to 1228 conditions per place. [2024-11-10 10:36:15,551 INFO L140 encePairwiseOnDemand]: 49/56 looper letters, 54 selfloop transitions, 6 changer transitions 1/76 dead transitions. [2024-11-10 10:36:15,552 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 76 transitions, 286 flow [2024-11-10 10:36:15,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 10:36:15,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-10 10:36:15,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 152 transitions. [2024-11-10 10:36:15,555 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5428571428571428 [2024-11-10 10:36:15,556 INFO L175 Difference]: Start difference. First operand has 46 places, 47 transitions, 100 flow. Second operand 5 states and 152 transitions. [2024-11-10 10:36:15,556 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 76 transitions, 286 flow [2024-11-10 10:36:15,557 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 76 transitions, 286 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-10 10:36:15,561 INFO L231 Difference]: Finished difference. Result has 53 places, 52 transitions, 142 flow [2024-11-10 10:36:15,561 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=142, PETRI_PLACES=53, PETRI_TRANSITIONS=52} [2024-11-10 10:36:15,561 INFO L277 CegarLoopForPetriNet]: 51 programPoint places, 2 predicate places. [2024-11-10 10:36:15,562 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 52 transitions, 142 flow [2024-11-10 10:36:15,562 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:36:15,562 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:36:15,562 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:36:15,562 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-10 10:36:15,562 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-10 10:36:15,563 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:36:15,563 INFO L85 PathProgramCache]: Analyzing trace with hash 240877358, now seen corresponding path program 1 times [2024-11-10 10:36:15,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:36:15,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172644446] [2024-11-10 10:36:15,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:36:15,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:36:15,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:36:15,718 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:36:15,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:36:15,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172644446] [2024-11-10 10:36:15,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172644446] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:36:15,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [624264535] [2024-11-10 10:36:15,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:36:15,721 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:36:15,721 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:36:15,723 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 10:36:15,725 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-10 10:36:15,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:36:15,793 INFO L255 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-10 10:36:15,797 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:36:15,842 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:36:15,843 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:36:15,878 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:36:15,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [624264535] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-10 10:36:15,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-10 10:36:15,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 4] total 9 [2024-11-10 10:36:15,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582442145] [2024-11-10 10:36:15,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:36:15,879 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 10:36:15,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:36:15,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 10:36:15,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2024-11-10 10:36:15,905 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 56 [2024-11-10 10:36:15,905 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 52 transitions, 142 flow. Second operand has 5 states, 5 states have (on average 22.4) internal successors, (112), 5 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:36:15,905 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:36:15,906 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 56 [2024-11-10 10:36:15,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:36:16,217 INFO L124 PetriNetUnfolderBase]: 2892/4909 cut-off events. [2024-11-10 10:36:16,218 INFO L125 PetriNetUnfolderBase]: For 420/420 co-relation queries the response was YES. [2024-11-10 10:36:16,224 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9732 conditions, 4909 events. 2892/4909 cut-off events. For 420/420 co-relation queries the response was YES. Maximal size of possible extension queue 344. Compared 34179 event pairs, 2113 based on Foata normal form. 0/4424 useless extension candidates. Maximal degree in co-relation 9725. Up to 2028 conditions per place. [2024-11-10 10:36:16,238 INFO L140 encePairwiseOnDemand]: 50/56 looper letters, 63 selfloop transitions, 6 changer transitions 0/84 dead transitions. [2024-11-10 10:36:16,238 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 84 transitions, 366 flow [2024-11-10 10:36:16,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-10 10:36:16,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-10 10:36:16,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 155 transitions. [2024-11-10 10:36:16,240 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5535714285714286 [2024-11-10 10:36:16,240 INFO L175 Difference]: Start difference. First operand has 53 places, 52 transitions, 142 flow. Second operand 5 states and 155 transitions. [2024-11-10 10:36:16,240 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 84 transitions, 366 flow [2024-11-10 10:36:16,242 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 84 transitions, 360 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 10:36:16,242 INFO L231 Difference]: Finished difference. Result has 59 places, 56 transitions, 180 flow [2024-11-10 10:36:16,243 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=180, PETRI_PLACES=59, PETRI_TRANSITIONS=56} [2024-11-10 10:36:16,243 INFO L277 CegarLoopForPetriNet]: 51 programPoint places, 8 predicate places. [2024-11-10 10:36:16,243 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 56 transitions, 180 flow [2024-11-10 10:36:16,244 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.4) internal successors, (112), 5 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:36:16,244 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:36:16,244 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:36:16,257 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-10 10:36:16,444 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 [2024-11-10 10:36:16,445 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-10 10:36:16,445 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:36:16,446 INFO L85 PathProgramCache]: Analyzing trace with hash 1517708004, now seen corresponding path program 1 times [2024-11-10 10:36:16,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:36:16,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415611492] [2024-11-10 10:36:16,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:36:16,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:36:16,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:36:16,523 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 10:36:16,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:36:16,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415611492] [2024-11-10 10:36:16,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [415611492] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:36:16,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [501270686] [2024-11-10 10:36:16,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:36:16,525 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:36:16,525 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:36:16,527 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 10:36:16,556 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-10 10:36:16,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:36:16,629 INFO L255 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-10 10:36:16,630 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:36:16,677 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 10:36:16,681 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:36:16,732 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 10:36:16,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [501270686] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-10 10:36:16,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-10 10:36:16,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 4] total 9 [2024-11-10 10:36:16,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529846183] [2024-11-10 10:36:16,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:36:16,735 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 10:36:16,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:36:16,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 10:36:16,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-10 10:36:16,754 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 56 [2024-11-10 10:36:16,755 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 56 transitions, 180 flow. Second operand has 5 states, 5 states have (on average 20.8) internal successors, (104), 5 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:36:16,755 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:36:16,755 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 56 [2024-11-10 10:36:16,755 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:36:17,221 INFO L124 PetriNetUnfolderBase]: 3980/6328 cut-off events. [2024-11-10 10:36:17,222 INFO L125 PetriNetUnfolderBase]: For 366/366 co-relation queries the response was YES. [2024-11-10 10:36:17,230 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12648 conditions, 6328 events. 3980/6328 cut-off events. For 366/366 co-relation queries the response was YES. Maximal size of possible extension queue 392. Compared 41094 event pairs, 1836 based on Foata normal form. 0/5725 useless extension candidates. Maximal degree in co-relation 12638. Up to 1936 conditions per place. [2024-11-10 10:36:17,249 INFO L140 encePairwiseOnDemand]: 48/56 looper letters, 97 selfloop transitions, 11 changer transitions 0/121 dead transitions. [2024-11-10 10:36:17,250 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 121 transitions, 556 flow [2024-11-10 10:36:17,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 10:36:17,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 10:36:17,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 197 transitions. [2024-11-10 10:36:17,253 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5863095238095238 [2024-11-10 10:36:17,253 INFO L175 Difference]: Start difference. First operand has 59 places, 56 transitions, 180 flow. Second operand 6 states and 197 transitions. [2024-11-10 10:36:17,253 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 121 transitions, 556 flow [2024-11-10 10:36:17,255 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 121 transitions, 554 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 10:36:17,257 INFO L231 Difference]: Finished difference. Result has 65 places, 61 transitions, 230 flow [2024-11-10 10:36:17,257 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=230, PETRI_PLACES=65, PETRI_TRANSITIONS=61} [2024-11-10 10:36:17,258 INFO L277 CegarLoopForPetriNet]: 51 programPoint places, 14 predicate places. [2024-11-10 10:36:17,259 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 61 transitions, 230 flow [2024-11-10 10:36:17,259 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.8) internal successors, (104), 5 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:36:17,259 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:36:17,259 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:36:17,273 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-10 10:36:17,460 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 [2024-11-10 10:36:17,462 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-10 10:36:17,462 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:36:17,462 INFO L85 PathProgramCache]: Analyzing trace with hash 671484842, now seen corresponding path program 1 times [2024-11-10 10:36:17,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:36:17,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168673304] [2024-11-10 10:36:17,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:36:17,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:36:17,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:36:17,569 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:36:17,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:36:17,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168673304] [2024-11-10 10:36:17,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168673304] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:36:17,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:36:17,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-10 10:36:17,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662351688] [2024-11-10 10:36:17,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:36:17,571 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 10:36:17,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:36:17,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 10:36:17,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-10 10:36:17,593 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 56 [2024-11-10 10:36:17,593 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 61 transitions, 230 flow. Second operand has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:36:17,594 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:36:17,594 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 56 [2024-11-10 10:36:17,594 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:36:17,886 INFO L124 PetriNetUnfolderBase]: 2023/3517 cut-off events. [2024-11-10 10:36:17,886 INFO L125 PetriNetUnfolderBase]: For 1292/1341 co-relation queries the response was YES. [2024-11-10 10:36:17,892 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7313 conditions, 3517 events. 2023/3517 cut-off events. For 1292/1341 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 22283 event pairs, 1212 based on Foata normal form. 111/3316 useless extension candidates. Maximal degree in co-relation 7301. Up to 1611 conditions per place. [2024-11-10 10:36:17,901 INFO L140 encePairwiseOnDemand]: 47/56 looper letters, 73 selfloop transitions, 8 changer transitions 0/95 dead transitions. [2024-11-10 10:36:17,901 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 95 transitions, 449 flow [2024-11-10 10:36:17,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 10:36:17,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 10:36:17,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 182 transitions. [2024-11-10 10:36:17,902 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5416666666666666 [2024-11-10 10:36:17,902 INFO L175 Difference]: Start difference. First operand has 65 places, 61 transitions, 230 flow. Second operand 6 states and 182 transitions. [2024-11-10 10:36:17,902 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 95 transitions, 449 flow [2024-11-10 10:36:17,905 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 95 transitions, 438 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-10 10:36:17,906 INFO L231 Difference]: Finished difference. Result has 66 places, 56 transitions, 200 flow [2024-11-10 10:36:17,907 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=200, PETRI_PLACES=66, PETRI_TRANSITIONS=56} [2024-11-10 10:36:17,908 INFO L277 CegarLoopForPetriNet]: 51 programPoint places, 15 predicate places. [2024-11-10 10:36:17,909 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 56 transitions, 200 flow [2024-11-10 10:36:17,909 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:36:17,909 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:36:17,909 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:36:17,909 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-10 10:36:17,910 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-10 10:36:17,910 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:36:17,910 INFO L85 PathProgramCache]: Analyzing trace with hash -1514023962, now seen corresponding path program 1 times [2024-11-10 10:36:17,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:36:17,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856572828] [2024-11-10 10:36:17,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:36:17,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:36:17,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:36:17,998 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:36:17,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:36:17,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856572828] [2024-11-10 10:36:17,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856572828] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:36:17,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:36:17,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 10:36:17,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474966423] [2024-11-10 10:36:17,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:36:17,999 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 10:36:18,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:36:18,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 10:36:18,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-10 10:36:18,005 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 56 [2024-11-10 10:36:18,005 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 56 transitions, 200 flow. Second operand has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:36:18,005 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:36:18,005 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 56 [2024-11-10 10:36:18,005 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:36:18,311 INFO L124 PetriNetUnfolderBase]: 2557/4597 cut-off events. [2024-11-10 10:36:18,312 INFO L125 PetriNetUnfolderBase]: For 2280/2280 co-relation queries the response was YES. [2024-11-10 10:36:18,320 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9796 conditions, 4597 events. 2557/4597 cut-off events. For 2280/2280 co-relation queries the response was YES. Maximal size of possible extension queue 201. Compared 30708 event pairs, 568 based on Foata normal form. 92/4396 useless extension candidates. Maximal degree in co-relation 9784. Up to 2578 conditions per place. [2024-11-10 10:36:18,333 INFO L140 encePairwiseOnDemand]: 52/56 looper letters, 67 selfloop transitions, 4 changer transitions 0/89 dead transitions. [2024-11-10 10:36:18,334 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 89 transitions, 456 flow [2024-11-10 10:36:18,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 10:36:18,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-10 10:36:18,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 137 transitions. [2024-11-10 10:36:18,336 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6116071428571429 [2024-11-10 10:36:18,336 INFO L175 Difference]: Start difference. First operand has 66 places, 56 transitions, 200 flow. Second operand 4 states and 137 transitions. [2024-11-10 10:36:18,336 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 89 transitions, 456 flow [2024-11-10 10:36:18,339 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 89 transitions, 431 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-11-10 10:36:18,341 INFO L231 Difference]: Finished difference. Result has 67 places, 59 transitions, 208 flow [2024-11-10 10:36:18,342 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=183, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=208, PETRI_PLACES=67, PETRI_TRANSITIONS=59} [2024-11-10 10:36:18,343 INFO L277 CegarLoopForPetriNet]: 51 programPoint places, 16 predicate places. [2024-11-10 10:36:18,343 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 59 transitions, 208 flow [2024-11-10 10:36:18,344 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:36:18,344 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:36:18,344 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:36:18,344 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-10 10:36:18,344 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-10 10:36:18,345 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:36:18,345 INFO L85 PathProgramCache]: Analyzing trace with hash -1079315512, now seen corresponding path program 1 times [2024-11-10 10:36:18,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:36:18,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590175964] [2024-11-10 10:36:18,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:36:18,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:36:18,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:36:18,473 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-10 10:36:18,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:36:18,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590175964] [2024-11-10 10:36:18,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1590175964] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:36:18,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1118115080] [2024-11-10 10:36:18,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:36:18,474 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:36:18,474 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:36:18,476 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 10:36:18,478 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-10 10:36:18,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:36:18,554 INFO L255 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-10 10:36:18,555 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:36:18,601 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-10 10:36:18,602 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:36:18,649 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-10 10:36:18,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1118115080] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-10 10:36:18,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-10 10:36:18,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 4] total 9 [2024-11-10 10:36:18,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453651738] [2024-11-10 10:36:18,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:36:18,650 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 10:36:18,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:36:18,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 10:36:18,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-10 10:36:18,665 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 56 [2024-11-10 10:36:18,666 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 59 transitions, 208 flow. Second operand has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:36:18,666 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:36:18,666 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 56 [2024-11-10 10:36:18,666 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:36:19,077 INFO L124 PetriNetUnfolderBase]: 2870/4754 cut-off events. [2024-11-10 10:36:19,077 INFO L125 PetriNetUnfolderBase]: For 2414/2414 co-relation queries the response was YES. [2024-11-10 10:36:19,084 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11093 conditions, 4754 events. 2870/4754 cut-off events. For 2414/2414 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 29336 event pairs, 929 based on Foata normal form. 0/4468 useless extension candidates. Maximal degree in co-relation 11080. Up to 1455 conditions per place. [2024-11-10 10:36:19,095 INFO L140 encePairwiseOnDemand]: 49/56 looper letters, 92 selfloop transitions, 8 changer transitions 0/114 dead transitions. [2024-11-10 10:36:19,095 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 114 transitions, 582 flow [2024-11-10 10:36:19,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 10:36:19,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 10:36:19,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 186 transitions. [2024-11-10 10:36:19,096 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5535714285714286 [2024-11-10 10:36:19,096 INFO L175 Difference]: Start difference. First operand has 67 places, 59 transitions, 208 flow. Second operand 6 states and 186 transitions. [2024-11-10 10:36:19,097 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 114 transitions, 582 flow [2024-11-10 10:36:19,098 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 114 transitions, 582 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-10 10:36:19,099 INFO L231 Difference]: Finished difference. Result has 74 places, 63 transitions, 245 flow [2024-11-10 10:36:19,099 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=208, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=245, PETRI_PLACES=74, PETRI_TRANSITIONS=63} [2024-11-10 10:36:19,100 INFO L277 CegarLoopForPetriNet]: 51 programPoint places, 23 predicate places. [2024-11-10 10:36:19,100 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 63 transitions, 245 flow [2024-11-10 10:36:19,100 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.2) internal successors, (106), 5 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:36:19,100 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:36:19,101 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:36:19,113 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-10 10:36:19,301 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:36:19,301 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-10 10:36:19,302 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:36:19,302 INFO L85 PathProgramCache]: Analyzing trace with hash 631332684, now seen corresponding path program 1 times [2024-11-10 10:36:19,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:36:19,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270356382] [2024-11-10 10:36:19,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:36:19,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:36:19,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:36:19,368 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:36:19,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:36:19,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270356382] [2024-11-10 10:36:19,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1270356382] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:36:19,369 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:36:19,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-10 10:36:19,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231874291] [2024-11-10 10:36:19,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:36:19,370 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 10:36:19,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:36:19,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 10:36:19,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-10 10:36:19,383 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 56 [2024-11-10 10:36:19,384 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 63 transitions, 245 flow. Second operand has 5 states, 5 states have (on average 24.4) internal successors, (122), 5 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:36:19,384 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:36:19,384 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 56 [2024-11-10 10:36:19,384 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:36:19,821 INFO L124 PetriNetUnfolderBase]: 3506/6395 cut-off events. [2024-11-10 10:36:19,821 INFO L125 PetriNetUnfolderBase]: For 3865/3901 co-relation queries the response was YES. [2024-11-10 10:36:19,834 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15336 conditions, 6395 events. 3506/6395 cut-off events. For 3865/3901 co-relation queries the response was YES. Maximal size of possible extension queue 291. Compared 46268 event pairs, 1130 based on Foata normal form. 128/6331 useless extension candidates. Maximal degree in co-relation 15320. Up to 3055 conditions per place. [2024-11-10 10:36:19,852 INFO L140 encePairwiseOnDemand]: 49/56 looper letters, 98 selfloop transitions, 15 changer transitions 0/133 dead transitions. [2024-11-10 10:36:19,852 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 133 transitions, 725 flow [2024-11-10 10:36:19,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 10:36:19,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 10:36:19,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 204 transitions. [2024-11-10 10:36:19,853 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6071428571428571 [2024-11-10 10:36:19,853 INFO L175 Difference]: Start difference. First operand has 74 places, 63 transitions, 245 flow. Second operand 6 states and 204 transitions. [2024-11-10 10:36:19,853 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 133 transitions, 725 flow [2024-11-10 10:36:19,858 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 133 transitions, 722 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 10:36:19,859 INFO L231 Difference]: Finished difference. Result has 82 places, 76 transitions, 370 flow [2024-11-10 10:36:19,859 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=242, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=370, PETRI_PLACES=82, PETRI_TRANSITIONS=76} [2024-11-10 10:36:19,860 INFO L277 CegarLoopForPetriNet]: 51 programPoint places, 31 predicate places. [2024-11-10 10:36:19,860 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 76 transitions, 370 flow [2024-11-10 10:36:19,860 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.4) internal successors, (122), 5 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:36:19,860 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:36:19,863 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:36:19,863 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-10 10:36:19,863 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-10 10:36:19,863 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:36:19,863 INFO L85 PathProgramCache]: Analyzing trace with hash 51229494, now seen corresponding path program 2 times [2024-11-10 10:36:19,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:36:19,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493143455] [2024-11-10 10:36:19,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:36:19,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:36:19,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:36:19,923 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:36:19,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:36:19,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493143455] [2024-11-10 10:36:19,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1493143455] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:36:19,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:36:19,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-10 10:36:19,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474395848] [2024-11-10 10:36:19,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:36:19,925 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 10:36:19,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:36:19,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 10:36:19,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-10 10:36:19,938 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 56 [2024-11-10 10:36:19,939 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 76 transitions, 370 flow. Second operand has 5 states, 5 states have (on average 24.4) internal successors, (122), 5 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:36:19,939 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:36:19,939 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 56 [2024-11-10 10:36:19,939 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:36:20,602 INFO L124 PetriNetUnfolderBase]: 4626/8359 cut-off events. [2024-11-10 10:36:20,603 INFO L125 PetriNetUnfolderBase]: For 10080/10166 co-relation queries the response was YES. [2024-11-10 10:36:20,624 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22630 conditions, 8359 events. 4626/8359 cut-off events. For 10080/10166 co-relation queries the response was YES. Maximal size of possible extension queue 333. Compared 61386 event pairs, 1656 based on Foata normal form. 152/8175 useless extension candidates. Maximal degree in co-relation 22609. Up to 2885 conditions per place. [2024-11-10 10:36:20,651 INFO L140 encePairwiseOnDemand]: 49/56 looper letters, 106 selfloop transitions, 13 changer transitions 0/139 dead transitions. [2024-11-10 10:36:20,651 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 139 transitions, 873 flow [2024-11-10 10:36:20,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 10:36:20,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 10:36:20,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 200 transitions. [2024-11-10 10:36:20,653 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5952380952380952 [2024-11-10 10:36:20,653 INFO L175 Difference]: Start difference. First operand has 82 places, 76 transitions, 370 flow. Second operand 6 states and 200 transitions. [2024-11-10 10:36:20,653 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 139 transitions, 873 flow [2024-11-10 10:36:20,664 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 139 transitions, 871 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-11-10 10:36:20,666 INFO L231 Difference]: Finished difference. Result has 91 places, 83 transitions, 479 flow [2024-11-10 10:36:20,667 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=368, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=479, PETRI_PLACES=91, PETRI_TRANSITIONS=83} [2024-11-10 10:36:20,667 INFO L277 CegarLoopForPetriNet]: 51 programPoint places, 40 predicate places. [2024-11-10 10:36:20,668 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 83 transitions, 479 flow [2024-11-10 10:36:20,668 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.4) internal successors, (122), 5 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:36:20,668 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:36:20,668 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:36:20,669 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-10 10:36:20,669 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-10 10:36:20,669 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:36:20,669 INFO L85 PathProgramCache]: Analyzing trace with hash -1643735378, now seen corresponding path program 3 times [2024-11-10 10:36:20,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:36:20,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531635566] [2024-11-10 10:36:20,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:36:20,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:36:20,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:36:20,737 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:36:20,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:36:20,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531635566] [2024-11-10 10:36:20,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1531635566] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:36:20,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:36:20,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-10 10:36:20,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524901419] [2024-11-10 10:36:20,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:36:20,739 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 10:36:20,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:36:20,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 10:36:20,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-10 10:36:20,755 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 56 [2024-11-10 10:36:20,755 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 83 transitions, 479 flow. Second operand has 5 states, 5 states have (on average 24.4) internal successors, (122), 5 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:36:20,755 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:36:20,755 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 56 [2024-11-10 10:36:20,755 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:36:21,487 INFO L124 PetriNetUnfolderBase]: 4783/8803 cut-off events. [2024-11-10 10:36:21,487 INFO L125 PetriNetUnfolderBase]: For 16372/16448 co-relation queries the response was YES. [2024-11-10 10:36:21,510 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24727 conditions, 8803 events. 4783/8803 cut-off events. For 16372/16448 co-relation queries the response was YES. Maximal size of possible extension queue 287. Compared 64360 event pairs, 912 based on Foata normal form. 156/8685 useless extension candidates. Maximal degree in co-relation 24701. Up to 3674 conditions per place. [2024-11-10 10:36:21,532 INFO L140 encePairwiseOnDemand]: 49/56 looper letters, 93 selfloop transitions, 24 changer transitions 0/137 dead transitions. [2024-11-10 10:36:21,533 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 137 transitions, 916 flow [2024-11-10 10:36:21,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 10:36:21,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 10:36:21,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 202 transitions. [2024-11-10 10:36:21,534 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6011904761904762 [2024-11-10 10:36:21,534 INFO L175 Difference]: Start difference. First operand has 91 places, 83 transitions, 479 flow. Second operand 6 states and 202 transitions. [2024-11-10 10:36:21,534 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 137 transitions, 916 flow [2024-11-10 10:36:21,629 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 137 transitions, 904 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-11-10 10:36:21,630 INFO L231 Difference]: Finished difference. Result has 98 places, 85 transitions, 575 flow [2024-11-10 10:36:21,631 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=459, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=575, PETRI_PLACES=98, PETRI_TRANSITIONS=85} [2024-11-10 10:36:21,631 INFO L277 CegarLoopForPetriNet]: 51 programPoint places, 47 predicate places. [2024-11-10 10:36:21,631 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 85 transitions, 575 flow [2024-11-10 10:36:21,632 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.4) internal successors, (122), 5 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:36:21,632 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:36:21,632 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:36:21,632 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-10 10:36:21,632 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-10 10:36:21,632 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:36:21,632 INFO L85 PathProgramCache]: Analyzing trace with hash -1410790888, now seen corresponding path program 1 times [2024-11-10 10:36:21,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:36:21,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694841852] [2024-11-10 10:36:21,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:36:21,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:36:21,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:36:21,727 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-10 10:36:21,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:36:21,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694841852] [2024-11-10 10:36:21,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694841852] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:36:21,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [507467902] [2024-11-10 10:36:21,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:36:21,728 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:36:21,728 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:36:21,729 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 10:36:21,733 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-10 10:36:21,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:36:21,798 INFO L255 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-10 10:36:21,799 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:36:21,860 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-10 10:36:21,861 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:36:21,928 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-10 10:36:21,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [507467902] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-10 10:36:21,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-10 10:36:21,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 4] total 9 [2024-11-10 10:36:21,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879570814] [2024-11-10 10:36:21,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:36:21,929 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 10:36:21,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:36:21,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 10:36:21,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-10 10:36:21,952 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 56 [2024-11-10 10:36:21,952 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 85 transitions, 575 flow. Second operand has 5 states, 5 states have (on average 22.0) internal successors, (110), 5 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:36:21,953 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:36:21,953 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 56 [2024-11-10 10:36:21,953 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:36:22,997 INFO L124 PetriNetUnfolderBase]: 5999/10832 cut-off events. [2024-11-10 10:36:22,997 INFO L125 PetriNetUnfolderBase]: For 22312/22347 co-relation queries the response was YES. [2024-11-10 10:36:23,019 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31377 conditions, 10832 events. 5999/10832 cut-off events. For 22312/22347 co-relation queries the response was YES. Maximal size of possible extension queue 334. Compared 79838 event pairs, 2435 based on Foata normal form. 0/10429 useless extension candidates. Maximal degree in co-relation 31348. Up to 2961 conditions per place. [2024-11-10 10:36:23,043 INFO L140 encePairwiseOnDemand]: 49/56 looper letters, 119 selfloop transitions, 14 changer transitions 5/154 dead transitions. [2024-11-10 10:36:23,043 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 154 transitions, 1276 flow [2024-11-10 10:36:23,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 10:36:23,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 10:36:23,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 188 transitions. [2024-11-10 10:36:23,044 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5595238095238095 [2024-11-10 10:36:23,044 INFO L175 Difference]: Start difference. First operand has 98 places, 85 transitions, 575 flow. Second operand 6 states and 188 transitions. [2024-11-10 10:36:23,044 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 154 transitions, 1276 flow [2024-11-10 10:36:23,069 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 154 transitions, 1197 flow, removed 14 selfloop flow, removed 4 redundant places. [2024-11-10 10:36:23,071 INFO L231 Difference]: Finished difference. Result has 103 places, 91 transitions, 648 flow [2024-11-10 10:36:23,071 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=526, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=648, PETRI_PLACES=103, PETRI_TRANSITIONS=91} [2024-11-10 10:36:23,071 INFO L277 CegarLoopForPetriNet]: 51 programPoint places, 52 predicate places. [2024-11-10 10:36:23,072 INFO L471 AbstractCegarLoop]: Abstraction has has 103 places, 91 transitions, 648 flow [2024-11-10 10:36:23,072 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.0) internal successors, (110), 5 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:36:23,072 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:36:23,072 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:36:23,084 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-10 10:36:23,272 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:36:23,273 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-10 10:36:23,274 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:36:23,274 INFO L85 PathProgramCache]: Analyzing trace with hash 1440471228, now seen corresponding path program 4 times [2024-11-10 10:36:23,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:36:23,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901557052] [2024-11-10 10:36:23,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:36:23,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:36:23,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:36:23,369 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-10 10:36:23,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:36:23,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901557052] [2024-11-10 10:36:23,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901557052] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:36:23,369 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:36:23,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-10 10:36:23,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598597876] [2024-11-10 10:36:23,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:36:23,371 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 10:36:23,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:36:23,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 10:36:23,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-10 10:36:23,390 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 56 [2024-11-10 10:36:23,390 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 91 transitions, 648 flow. Second operand has 5 states, 5 states have (on average 23.0) internal successors, (115), 5 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:36:23,390 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:36:23,391 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 56 [2024-11-10 10:36:23,391 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:36:23,794 INFO L124 PetriNetUnfolderBase]: 2678/4988 cut-off events. [2024-11-10 10:36:23,794 INFO L125 PetriNetUnfolderBase]: For 12675/12777 co-relation queries the response was YES. [2024-11-10 10:36:23,808 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15456 conditions, 4988 events. 2678/4988 cut-off events. For 12675/12777 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 31344 event pairs, 1938 based on Foata normal form. 48/4954 useless extension candidates. Maximal degree in co-relation 15425. Up to 3567 conditions per place. [2024-11-10 10:36:23,819 INFO L140 encePairwiseOnDemand]: 48/56 looper letters, 49 selfloop transitions, 4 changer transitions 26/95 dead transitions. [2024-11-10 10:36:23,819 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 95 transitions, 735 flow [2024-11-10 10:36:23,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 10:36:23,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 10:36:23,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 162 transitions. [2024-11-10 10:36:23,820 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.48214285714285715 [2024-11-10 10:36:23,820 INFO L175 Difference]: Start difference. First operand has 103 places, 91 transitions, 648 flow. Second operand 6 states and 162 transitions. [2024-11-10 10:36:23,820 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 95 transitions, 735 flow [2024-11-10 10:36:23,831 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 95 transitions, 716 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-11-10 10:36:23,832 INFO L231 Difference]: Finished difference. Result has 103 places, 69 transitions, 435 flow [2024-11-10 10:36:23,832 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=514, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=435, PETRI_PLACES=103, PETRI_TRANSITIONS=69} [2024-11-10 10:36:23,832 INFO L277 CegarLoopForPetriNet]: 51 programPoint places, 52 predicate places. [2024-11-10 10:36:23,833 INFO L471 AbstractCegarLoop]: Abstraction has has 103 places, 69 transitions, 435 flow [2024-11-10 10:36:23,833 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.0) internal successors, (115), 5 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:36:23,833 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:36:23,833 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:36:23,833 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-10 10:36:23,833 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-10 10:36:23,834 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:36:23,834 INFO L85 PathProgramCache]: Analyzing trace with hash -69545530, now seen corresponding path program 1 times [2024-11-10 10:36:23,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:36:23,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403567132] [2024-11-10 10:36:23,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:36:23,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:36:23,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:36:23,925 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-10 10:36:23,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:36:23,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403567132] [2024-11-10 10:36:23,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403567132] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:36:23,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [394354398] [2024-11-10 10:36:23,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:36:23,926 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:36:23,926 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:36:23,927 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 10:36:23,928 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-10 10:36:23,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:36:23,994 INFO L255 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-10 10:36:23,995 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:36:24,080 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-10 10:36:24,080 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:36:24,151 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-10 10:36:24,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [394354398] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 10:36:24,151 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 10:36:24,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2024-11-10 10:36:24,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130909069] [2024-11-10 10:36:24,151 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 10:36:24,152 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-10 10:36:24,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:36:24,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-10 10:36:24,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2024-11-10 10:36:24,218 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 56 [2024-11-10 10:36:24,219 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 69 transitions, 435 flow. Second operand has 14 states, 14 states have (on average 20.857142857142858) internal successors, (292), 14 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:36:24,219 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:36:24,219 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 56 [2024-11-10 10:36:24,219 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:36:24,759 INFO L124 PetriNetUnfolderBase]: 3705/6683 cut-off events. [2024-11-10 10:36:24,759 INFO L125 PetriNetUnfolderBase]: For 16757/16779 co-relation queries the response was YES. [2024-11-10 10:36:24,780 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20460 conditions, 6683 events. 3705/6683 cut-off events. For 16757/16779 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 43219 event pairs, 1996 based on Foata normal form. 54/6679 useless extension candidates. Maximal degree in co-relation 20430. Up to 3567 conditions per place. [2024-11-10 10:36:24,794 INFO L140 encePairwiseOnDemand]: 44/56 looper letters, 63 selfloop transitions, 8 changer transitions 54/140 dead transitions. [2024-11-10 10:36:24,795 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 140 transitions, 1095 flow [2024-11-10 10:36:24,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-10 10:36:24,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-10 10:36:24,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 258 transitions. [2024-11-10 10:36:24,798 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4607142857142857 [2024-11-10 10:36:24,798 INFO L175 Difference]: Start difference. First operand has 103 places, 69 transitions, 435 flow. Second operand 10 states and 258 transitions. [2024-11-10 10:36:24,798 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 140 transitions, 1095 flow [2024-11-10 10:36:24,828 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 140 transitions, 1043 flow, removed 9 selfloop flow, removed 9 redundant places. [2024-11-10 10:36:24,829 INFO L231 Difference]: Finished difference. Result has 100 places, 71 transitions, 457 flow [2024-11-10 10:36:24,829 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=405, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=457, PETRI_PLACES=100, PETRI_TRANSITIONS=71} [2024-11-10 10:36:24,830 INFO L277 CegarLoopForPetriNet]: 51 programPoint places, 49 predicate places. [2024-11-10 10:36:24,830 INFO L471 AbstractCegarLoop]: Abstraction has has 100 places, 71 transitions, 457 flow [2024-11-10 10:36:24,830 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 20.857142857142858) internal successors, (292), 14 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:36:24,830 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:36:24,830 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:36:24,842 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-10 10:36:25,031 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-10 10:36:25,031 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-10 10:36:25,031 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:36:25,031 INFO L85 PathProgramCache]: Analyzing trace with hash -1845671420, now seen corresponding path program 2 times [2024-11-10 10:36:25,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:36:25,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936743639] [2024-11-10 10:36:25,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:36:25,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:36:25,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:36:25,155 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-10 10:36:25,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:36:25,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936743639] [2024-11-10 10:36:25,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [936743639] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:36:25,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1179452483] [2024-11-10 10:36:25,156 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 10:36:25,156 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:36:25,156 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:36:25,157 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 10:36:25,159 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-10 10:36:25,235 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-10 10:36:25,235 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 10:36:25,236 INFO L255 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-10 10:36:25,238 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:36:25,357 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-10 10:36:25,357 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:36:25,465 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-10 10:36:25,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1179452483] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 10:36:25,465 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 10:36:25,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 15 [2024-11-10 10:36:25,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726855462] [2024-11-10 10:36:25,466 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 10:36:25,466 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-10 10:36:25,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:36:25,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-10 10:36:25,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2024-11-10 10:36:25,550 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 56 [2024-11-10 10:36:25,551 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 71 transitions, 457 flow. Second operand has 16 states, 16 states have (on average 19.0) internal successors, (304), 16 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:36:25,551 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:36:25,551 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 56 [2024-11-10 10:36:25,551 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:36:27,037 INFO L124 PetriNetUnfolderBase]: 7309/12382 cut-off events. [2024-11-10 10:36:27,037 INFO L125 PetriNetUnfolderBase]: For 28295/28353 co-relation queries the response was YES. [2024-11-10 10:36:27,071 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38555 conditions, 12382 events. 7309/12382 cut-off events. For 28295/28353 co-relation queries the response was YES. Maximal size of possible extension queue 236. Compared 82652 event pairs, 998 based on Foata normal form. 406/12688 useless extension candidates. Maximal degree in co-relation 38526. Up to 1766 conditions per place. [2024-11-10 10:36:27,113 INFO L140 encePairwiseOnDemand]: 43/56 looper letters, 199 selfloop transitions, 49 changer transitions 0/260 dead transitions. [2024-11-10 10:36:27,113 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 260 transitions, 2053 flow [2024-11-10 10:36:27,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-10 10:36:27,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-11-10 10:36:27,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 458 transitions. [2024-11-10 10:36:27,115 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45436507936507936 [2024-11-10 10:36:27,115 INFO L175 Difference]: Start difference. First operand has 100 places, 71 transitions, 457 flow. Second operand 18 states and 458 transitions. [2024-11-10 10:36:27,115 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 260 transitions, 2053 flow [2024-11-10 10:36:27,154 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 260 transitions, 1975 flow, removed 22 selfloop flow, removed 7 redundant places. [2024-11-10 10:36:27,156 INFO L231 Difference]: Finished difference. Result has 115 places, 105 transitions, 938 flow [2024-11-10 10:36:27,156 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=425, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=938, PETRI_PLACES=115, PETRI_TRANSITIONS=105} [2024-11-10 10:36:27,157 INFO L277 CegarLoopForPetriNet]: 51 programPoint places, 64 predicate places. [2024-11-10 10:36:27,157 INFO L471 AbstractCegarLoop]: Abstraction has has 115 places, 105 transitions, 938 flow [2024-11-10 10:36:27,157 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 19.0) internal successors, (304), 16 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:36:27,157 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:36:27,158 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:36:27,171 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-10 10:36:27,358 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:36:27,359 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-10 10:36:27,360 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:36:27,360 INFO L85 PathProgramCache]: Analyzing trace with hash 1137827606, now seen corresponding path program 3 times [2024-11-10 10:36:27,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:36:27,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853003589] [2024-11-10 10:36:27,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:36:27,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:36:27,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:36:27,463 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 12 proven. 9 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-10 10:36:27,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:36:27,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853003589] [2024-11-10 10:36:27,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [853003589] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 10:36:27,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [261120360] [2024-11-10 10:36:27,464 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-10 10:36:27,464 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:36:27,464 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:36:27,465 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 10:36:27,466 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-10 10:36:27,540 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-10 10:36:27,541 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 10:36:27,542 INFO L255 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-10 10:36:27,544 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 10:36:27,588 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 13 proven. 5 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-10 10:36:27,589 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 10:36:27,624 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 13 proven. 5 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-10 10:36:27,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [261120360] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 10:36:27,624 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 10:36:27,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 11 [2024-11-10 10:36:27,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938142115] [2024-11-10 10:36:27,625 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 10:36:27,625 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-10 10:36:27,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:36:27,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-10 10:36:27,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-11-10 10:36:27,674 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 56 [2024-11-10 10:36:27,674 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 105 transitions, 938 flow. Second operand has 11 states, 11 states have (on average 20.363636363636363) internal successors, (224), 11 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:36:27,674 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:36:27,675 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 56 [2024-11-10 10:36:27,675 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:36:30,541 INFO L124 PetriNetUnfolderBase]: 15157/23254 cut-off events. [2024-11-10 10:36:30,541 INFO L125 PetriNetUnfolderBase]: For 70305/70467 co-relation queries the response was YES. [2024-11-10 10:36:30,648 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75526 conditions, 23254 events. 15157/23254 cut-off events. For 70305/70467 co-relation queries the response was YES. Maximal size of possible extension queue 532. Compared 151734 event pairs, 258 based on Foata normal form. 566/23752 useless extension candidates. Maximal degree in co-relation 75491. Up to 2751 conditions per place. [2024-11-10 10:36:30,673 INFO L140 encePairwiseOnDemand]: 44/56 looper letters, 0 selfloop transitions, 0 changer transitions 569/569 dead transitions. [2024-11-10 10:36:30,673 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 569 transitions, 4931 flow [2024-11-10 10:36:30,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-11-10 10:36:30,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2024-11-10 10:36:30,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 891 transitions. [2024-11-10 10:36:30,676 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4545918367346939 [2024-11-10 10:36:30,676 INFO L175 Difference]: Start difference. First operand has 115 places, 105 transitions, 938 flow. Second operand 35 states and 891 transitions. [2024-11-10 10:36:30,676 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 569 transitions, 4931 flow [2024-11-10 10:36:30,781 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 569 transitions, 4741 flow, removed 28 selfloop flow, removed 7 redundant places. [2024-11-10 10:36:30,784 INFO L231 Difference]: Finished difference. Result has 137 places, 0 transitions, 0 flow [2024-11-10 10:36:30,784 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=842, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=0, PETRI_PLACES=137, PETRI_TRANSITIONS=0} [2024-11-10 10:36:30,784 INFO L277 CegarLoopForPetriNet]: 51 programPoint places, 86 predicate places. [2024-11-10 10:36:30,784 INFO L471 AbstractCegarLoop]: Abstraction has has 137 places, 0 transitions, 0 flow [2024-11-10 10:36:30,784 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 20.363636363636363) internal successors, (224), 11 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:36:30,787 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2024-11-10 10:36:30,787 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2024-11-10 10:36:30,787 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-11-10 10:36:30,787 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-11-10 10:36:30,800 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-10 10:36:30,987 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 10:36:30,988 INFO L407 BasicCegarLoop]: Path program histogram: [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:36:30,991 INFO L239 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-10 10:36:30,991 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-10 10:36:30,994 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.11 10:36:30 BasicIcfg [2024-11-10 10:36:30,994 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-10 10:36:30,995 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-10 10:36:30,995 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-10 10:36:30,995 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-10 10:36:30,995 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 10:36:14" (3/4) ... [2024-11-10 10:36:30,999 INFO L143 WitnessPrinter]: Generating witness for correct program [2024-11-10 10:36:31,001 INFO L393 IcfgBacktranslator]: Ignoring RootEdge to procedure thread1 [2024-11-10 10:36:31,002 INFO L393 IcfgBacktranslator]: Ignoring RootEdge to procedure thread2 [2024-11-10 10:36:31,002 INFO L393 IcfgBacktranslator]: Ignoring RootEdge to procedure thread3 [2024-11-10 10:36:31,007 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 91 nodes and edges [2024-11-10 10:36:31,008 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 40 nodes and edges [2024-11-10 10:36:31,009 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2024-11-10 10:36:31,009 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-10 10:36:31,083 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-10 10:36:31,083 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-10 10:36:31,083 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-10 10:36:31,083 INFO L158 Benchmark]: Toolchain (without parser) took 17762.71ms. Allocated memory was 180.4MB in the beginning and 2.9GB in the end (delta: 2.8GB). Free memory was 108.2MB in the beginning and 1.2GB in the end (delta: -1.1GB). Peak memory consumption was 1.7GB. Max. memory is 16.1GB. [2024-11-10 10:36:31,083 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 180.4MB. Free memory is still 146.2MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-10 10:36:31,084 INFO L158 Benchmark]: CACSL2BoogieTranslator took 235.21ms. Allocated memory is still 180.4MB. Free memory was 108.0MB in the beginning and 94.4MB in the end (delta: 13.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-11-10 10:36:31,084 INFO L158 Benchmark]: Boogie Procedure Inliner took 24.31ms. Allocated memory is still 180.4MB. Free memory was 94.4MB in the beginning and 92.5MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-10 10:36:31,084 INFO L158 Benchmark]: Boogie Preprocessor took 62.11ms. Allocated memory is still 180.4MB. Free memory was 92.5MB in the beginning and 147.1MB in the end (delta: -54.7MB). Peak memory consumption was 8.1MB. Max. memory is 16.1GB. [2024-11-10 10:36:31,084 INFO L158 Benchmark]: IcfgBuilder took 498.05ms. Allocated memory is still 180.4MB. Free memory was 147.1MB in the beginning and 111.2MB in the end (delta: 35.9MB). Peak memory consumption was 40.3MB. Max. memory is 16.1GB. [2024-11-10 10:36:31,084 INFO L158 Benchmark]: TraceAbstraction took 16849.40ms. Allocated memory was 180.4MB in the beginning and 2.9GB in the end (delta: 2.8GB). Free memory was 110.0MB in the beginning and 1.2GB in the end (delta: -1.1GB). Peak memory consumption was 1.7GB. Max. memory is 16.1GB. [2024-11-10 10:36:31,084 INFO L158 Benchmark]: Witness Printer took 88.22ms. Allocated memory is still 2.9GB. Free memory was 1.2GB in the beginning and 1.2GB in the end (delta: 5.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2024-11-10 10:36:31,085 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 180.4MB. Free memory is still 146.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 235.21ms. Allocated memory is still 180.4MB. Free memory was 108.0MB in the beginning and 94.4MB in the end (delta: 13.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 24.31ms. Allocated memory is still 180.4MB. Free memory was 94.4MB in the beginning and 92.5MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 62.11ms. Allocated memory is still 180.4MB. Free memory was 92.5MB in the beginning and 147.1MB in the end (delta: -54.7MB). Peak memory consumption was 8.1MB. Max. memory is 16.1GB. * IcfgBuilder took 498.05ms. Allocated memory is still 180.4MB. Free memory was 147.1MB in the beginning and 111.2MB in the end (delta: 35.9MB). Peak memory consumption was 40.3MB. Max. memory is 16.1GB. * TraceAbstraction took 16849.40ms. Allocated memory was 180.4MB in the beginning and 2.9GB in the end (delta: 2.8GB). Free memory was 110.0MB in the beginning and 1.2GB in the end (delta: -1.1GB). Peak memory consumption was 1.7GB. Max. memory is 16.1GB. * Witness Printer took 88.22ms. Allocated memory is still 2.9GB. Free memory was 1.2GB in the beginning and 1.2GB in the end (delta: 5.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 94]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 75 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 16.8s, OverallIterations: 15, TraceHistogramMax: 3, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 11.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1363 SdHoareTripleChecker+Valid, 2.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1233 mSDsluCounter, 193 SdHoareTripleChecker+Invalid, 1.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 150 mSDsCounter, 68 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4600 IncrementalHoareTripleChecker+Invalid, 4668 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 68 mSolverCounterUnsat, 43 mSDtfsCounter, 4600 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 830 GetRequests, 683 SyntacticMatches, 9 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 612 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=938occurred in iteration=14, InterpolantAutomatonStates: 127, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.4s InterpolantComputationTime, 986 NumberOfCodeBlocks, 959 NumberOfCodeBlocksAsserted, 24 NumberOfCheckSat, 1298 ConstructedInterpolants, 0 QuantifiedInterpolants, 3736 SizeOfPredicates, 30 NumberOfNonLiveVariables, 1596 ConjunctsInSsa, 47 ConjunctsInUnsatCore, 29 InterpolantComputations, 12 PerfectInterpolantSequences, 284/350 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-11-10 10:36:31,107 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE