./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/test-easy10.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/test-easy10.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 24421fae56d27ddfd314bb85e4431c40a1e6738a845aa97472d8668d2b4dde52 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-10 10:37:17,041 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-10 10:37:17,141 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-10 10:37:17,147 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-10 10:37:17,150 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-10 10:37:17,178 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-10 10:37:17,179 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-10 10:37:17,179 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-10 10:37:17,180 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-10 10:37:17,180 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-10 10:37:17,180 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-10 10:37:17,181 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-10 10:37:17,181 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-10 10:37:17,182 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-10 10:37:17,182 INFO L153 SettingsManager]: * Use SBE=true [2024-11-10 10:37:17,182 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-10 10:37:17,183 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-10 10:37:17,183 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-10 10:37:17,183 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-10 10:37:17,184 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-10 10:37:17,184 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-10 10:37:17,189 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-10 10:37:17,189 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-10 10:37:17,190 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-10 10:37:17,190 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-10 10:37:17,190 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-10 10:37:17,190 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-10 10:37:17,191 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-10 10:37:17,191 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-10 10:37:17,191 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-10 10:37:17,192 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-10 10:37:17,192 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-10 10:37:17,196 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 10:37:17,197 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-10 10:37:17,197 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-10 10:37:17,197 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-10 10:37:17,197 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-10 10:37:17,198 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-10 10:37:17,198 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-10 10:37:17,198 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-10 10:37:17,198 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-10 10:37:17,199 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-10 10:37:17,199 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 24421fae56d27ddfd314bb85e4431c40a1e6738a845aa97472d8668d2b4dde52 [2024-11-10 10:37:17,475 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-10 10:37:17,497 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-10 10:37:17,501 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-10 10:37:17,502 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-10 10:37:17,503 INFO L274 PluginConnector]: CDTParser initialized [2024-11-10 10:37:17,504 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/test-easy10.wvr.c [2024-11-10 10:37:18,989 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-10 10:37:19,210 INFO L384 CDTParser]: Found 1 translation units. [2024-11-10 10:37:19,211 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/test-easy10.wvr.c [2024-11-10 10:37:19,219 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/73ac76d67/6351ec21500b4cf3aa629f3727cc1037/FLAG308bbcf20 [2024-11-10 10:37:19,233 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/73ac76d67/6351ec21500b4cf3aa629f3727cc1037 [2024-11-10 10:37:19,236 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-10 10:37:19,238 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-10 10:37:19,240 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-10 10:37:19,240 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-10 10:37:19,246 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-10 10:37:19,247 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 10:37:19" (1/1) ... [2024-11-10 10:37:19,248 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a0c381f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:37:19, skipping insertion in model container [2024-11-10 10:37:19,248 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 10:37:19" (1/1) ... [2024-11-10 10:37:19,275 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-10 10:37:19,493 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/test-easy10.wvr.c[2547,2560] [2024-11-10 10:37:19,500 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 10:37:19,517 INFO L200 MainTranslator]: Completed pre-run [2024-11-10 10:37:19,545 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/test-easy10.wvr.c[2547,2560] [2024-11-10 10:37:19,546 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 10:37:19,568 INFO L204 MainTranslator]: Completed translation [2024-11-10 10:37:19,568 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:37:19 WrapperNode [2024-11-10 10:37:19,569 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-10 10:37:19,570 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-10 10:37:19,570 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-10 10:37:19,571 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-10 10:37:19,578 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:37:19" (1/1) ... [2024-11-10 10:37:19,586 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:37:19" (1/1) ... [2024-11-10 10:37:19,613 INFO L138 Inliner]: procedures = 20, calls = 16, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 147 [2024-11-10 10:37:19,616 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-10 10:37:19,617 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-10 10:37:19,617 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-10 10:37:19,617 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-10 10:37:19,628 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:37:19" (1/1) ... [2024-11-10 10:37:19,629 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:37:19" (1/1) ... [2024-11-10 10:37:19,632 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:37:19" (1/1) ... [2024-11-10 10:37:19,659 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-10 10:37:19,659 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:37:19" (1/1) ... [2024-11-10 10:37:19,660 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:37:19" (1/1) ... [2024-11-10 10:37:19,668 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:37:19" (1/1) ... [2024-11-10 10:37:19,670 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:37:19" (1/1) ... [2024-11-10 10:37:19,671 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:37:19" (1/1) ... [2024-11-10 10:37:19,672 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:37:19" (1/1) ... [2024-11-10 10:37:19,678 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-10 10:37:19,679 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-10 10:37:19,680 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-10 10:37:19,680 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-10 10:37:19,681 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:37:19" (1/1) ... [2024-11-10 10:37:19,687 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 10:37:19,702 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:37:19,720 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 10:37:19,726 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 10:37:19,772 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-10 10:37:19,773 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-10 10:37:19,773 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-10 10:37:19,773 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-10 10:37:19,773 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-10 10:37:19,773 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-10 10:37:19,773 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-10 10:37:19,774 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-11-10 10:37:19,774 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-11-10 10:37:19,774 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-10 10:37:19,774 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-10 10:37:19,774 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-10 10:37:19,776 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 10:37:19,915 INFO L256 CfgBuilder]: Building ICFG [2024-11-10 10:37:19,918 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-10 10:37:20,269 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-10 10:37:20,273 INFO L307 CfgBuilder]: Performing block encoding [2024-11-10 10:37:20,475 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-10 10:37:20,475 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-10 10:37:20,475 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 10:37:20 BoogieIcfgContainer [2024-11-10 10:37:20,476 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-10 10:37:20,481 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-10 10:37:20,482 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-10 10:37:20,486 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-10 10:37:20,486 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 10:37:19" (1/3) ... [2024-11-10 10:37:20,487 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7be58a28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 10:37:20, skipping insertion in model container [2024-11-10 10:37:20,487 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:37:19" (2/3) ... [2024-11-10 10:37:20,487 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7be58a28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 10:37:20, skipping insertion in model container [2024-11-10 10:37:20,487 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 10:37:20" (3/3) ... [2024-11-10 10:37:20,489 INFO L112 eAbstractionObserver]: Analyzing ICFG test-easy10.wvr.c [2024-11-10 10:37:20,502 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-10 10:37:20,502 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-10 10:37:20,502 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-10 10:37:20,572 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-11-10 10:37:20,615 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 73 places, 60 transitions, 148 flow [2024-11-10 10:37:20,658 INFO L124 PetriNetUnfolderBase]: 0/56 cut-off events. [2024-11-10 10:37:20,658 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-10 10:37:20,662 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73 conditions, 56 events. 0/56 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 103 event pairs, 0 based on Foata normal form. 0/55 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2024-11-10 10:37:20,663 INFO L82 GeneralOperation]: Start removeDead. Operand has 73 places, 60 transitions, 148 flow [2024-11-10 10:37:20,667 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 68 places, 55 transitions, 134 flow [2024-11-10 10:37:20,676 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 10:37:20,682 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;@12986c5f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 10:37:20,683 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-11-10 10:37:20,705 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 10:37:20,705 INFO L124 PetriNetUnfolderBase]: 0/54 cut-off events. [2024-11-10 10:37:20,705 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-10 10:37:20,706 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:37:20,706 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:37:20,707 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-10 10:37:20,712 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:37:20,712 INFO L85 PathProgramCache]: Analyzing trace with hash -1595918204, now seen corresponding path program 1 times [2024-11-10 10:37:20,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:37:20,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942945701] [2024-11-10 10:37:20,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:37:20,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:37:20,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:37:21,332 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 10:37:21,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:37:21,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942945701] [2024-11-10 10:37:21,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [942945701] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:37:21,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:37:21,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 10:37:21,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269225863] [2024-11-10 10:37:21,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:37:21,348 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 10:37:21,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:37:21,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 10:37:21,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 10:37:21,379 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 60 [2024-11-10 10:37:21,381 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 55 transitions, 134 flow. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 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 10:37:21,381 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:37:21,381 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 60 [2024-11-10 10:37:21,382 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:37:24,127 INFO L124 PetriNetUnfolderBase]: 22838/30875 cut-off events. [2024-11-10 10:37:24,129 INFO L125 PetriNetUnfolderBase]: For 835/835 co-relation queries the response was YES. [2024-11-10 10:37:24,211 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63061 conditions, 30875 events. 22838/30875 cut-off events. For 835/835 co-relation queries the response was YES. Maximal size of possible extension queue 778. Compared 171470 event pairs, 7169 based on Foata normal form. 440/31303 useless extension candidates. Maximal degree in co-relation 59981. Up to 24496 conditions per place. [2024-11-10 10:37:24,359 INFO L140 encePairwiseOnDemand]: 57/60 looper letters, 70 selfloop transitions, 2 changer transitions 0/77 dead transitions. [2024-11-10 10:37:24,360 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 77 transitions, 328 flow [2024-11-10 10:37:24,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 10:37:24,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 10:37:24,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 100 transitions. [2024-11-10 10:37:24,373 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5555555555555556 [2024-11-10 10:37:24,375 INFO L175 Difference]: Start difference. First operand has 68 places, 55 transitions, 134 flow. Second operand 3 states and 100 transitions. [2024-11-10 10:37:24,376 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 77 transitions, 328 flow [2024-11-10 10:37:24,411 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 77 transitions, 308 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-11-10 10:37:24,416 INFO L231 Difference]: Finished difference. Result has 63 places, 55 transitions, 126 flow [2024-11-10 10:37:24,419 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=126, PETRI_PLACES=63, PETRI_TRANSITIONS=55} [2024-11-10 10:37:24,423 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, -5 predicate places. [2024-11-10 10:37:24,423 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 55 transitions, 126 flow [2024-11-10 10:37:24,423 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 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 10:37:24,424 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:37:24,424 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:37:24,424 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-10 10:37:24,425 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-10 10:37:24,426 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:37:24,426 INFO L85 PathProgramCache]: Analyzing trace with hash -1581868704, now seen corresponding path program 2 times [2024-11-10 10:37:24,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:37:24,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276565032] [2024-11-10 10:37:24,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:37:24,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:37:24,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:37:24,690 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 10:37:24,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:37:24,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276565032] [2024-11-10 10:37:24,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276565032] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:37:24,692 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:37:24,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 10:37:24,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571763415] [2024-11-10 10:37:24,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:37:24,694 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 10:37:24,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:37:24,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 10:37:24,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 10:37:24,697 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 60 [2024-11-10 10:37:24,697 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 55 transitions, 126 flow. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 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 10:37:24,698 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:37:24,698 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 60 [2024-11-10 10:37:24,698 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:37:26,371 INFO L124 PetriNetUnfolderBase]: 17539/23845 cut-off events. [2024-11-10 10:37:26,372 INFO L125 PetriNetUnfolderBase]: For 1244/1244 co-relation queries the response was YES. [2024-11-10 10:37:26,409 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49400 conditions, 23845 events. 17539/23845 cut-off events. For 1244/1244 co-relation queries the response was YES. Maximal size of possible extension queue 568. Compared 123621 event pairs, 6369 based on Foata normal form. 434/24259 useless extension candidates. Maximal degree in co-relation 19340. Up to 17342 conditions per place. [2024-11-10 10:37:26,489 INFO L140 encePairwiseOnDemand]: 57/60 looper letters, 68 selfloop transitions, 2 changer transitions 0/75 dead transitions. [2024-11-10 10:37:26,489 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 75 transitions, 313 flow [2024-11-10 10:37:26,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 10:37:26,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 10:37:26,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 98 transitions. [2024-11-10 10:37:26,492 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5444444444444444 [2024-11-10 10:37:26,492 INFO L175 Difference]: Start difference. First operand has 63 places, 55 transitions, 126 flow. Second operand 3 states and 98 transitions. [2024-11-10 10:37:26,492 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 75 transitions, 313 flow [2024-11-10 10:37:26,495 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 75 transitions, 307 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-10 10:37:26,497 INFO L231 Difference]: Finished difference. Result has 64 places, 55 transitions, 130 flow [2024-11-10 10:37:26,497 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=130, PETRI_PLACES=64, PETRI_TRANSITIONS=55} [2024-11-10 10:37:26,498 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, -4 predicate places. [2024-11-10 10:37:26,498 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 55 transitions, 130 flow [2024-11-10 10:37:26,498 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 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 10:37:26,499 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:37:26,499 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:37:26,499 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-10 10:37:26,499 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-10 10:37:26,500 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:37:26,500 INFO L85 PathProgramCache]: Analyzing trace with hash -1653709342, now seen corresponding path program 3 times [2024-11-10 10:37:26,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:37:26,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978576633] [2024-11-10 10:37:26,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:37:26,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:37:26,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:37:29,011 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 10:37:29,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:37:29,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978576633] [2024-11-10 10:37:29,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978576633] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:37:29,012 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:37:29,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-11-10 10:37:29,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186946744] [2024-11-10 10:37:29,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:37:29,014 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-10 10:37:29,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:37:29,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-10 10:37:29,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2024-11-10 10:37:29,016 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 60 [2024-11-10 10:37:29,016 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 55 transitions, 130 flow. Second operand has 14 states, 14 states have (on average 12.571428571428571) internal successors, (176), 14 states have internal predecessors, (176), 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 10:37:29,017 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:37:29,017 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 60 [2024-11-10 10:37:29,017 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:37:34,515 INFO L124 PetriNetUnfolderBase]: 40518/55563 cut-off events. [2024-11-10 10:37:34,515 INFO L125 PetriNetUnfolderBase]: For 4089/4089 co-relation queries the response was YES. [2024-11-10 10:37:34,599 INFO L83 FinitePrefix]: Finished finitePrefix Result has 117773 conditions, 55563 events. 40518/55563 cut-off events. For 4089/4089 co-relation queries the response was YES. Maximal size of possible extension queue 1178. Compared 333677 event pairs, 5199 based on Foata normal form. 1/55553 useless extension candidates. Maximal degree in co-relation 25344. Up to 14408 conditions per place. [2024-11-10 10:37:34,794 INFO L140 encePairwiseOnDemand]: 45/60 looper letters, 251 selfloop transitions, 16 changer transitions 19/291 dead transitions. [2024-11-10 10:37:34,794 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 291 transitions, 1269 flow [2024-11-10 10:37:34,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-10 10:37:34,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-10 10:37:34,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 422 transitions. [2024-11-10 10:37:34,798 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4688888888888889 [2024-11-10 10:37:34,798 INFO L175 Difference]: Start difference. First operand has 64 places, 55 transitions, 130 flow. Second operand 15 states and 422 transitions. [2024-11-10 10:37:34,798 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 291 transitions, 1269 flow [2024-11-10 10:37:34,838 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 291 transitions, 1249 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-10 10:37:34,842 INFO L231 Difference]: Finished difference. Result has 89 places, 69 transitions, 250 flow [2024-11-10 10:37:34,843 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=250, PETRI_PLACES=89, PETRI_TRANSITIONS=69} [2024-11-10 10:37:34,844 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, 21 predicate places. [2024-11-10 10:37:34,844 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 69 transitions, 250 flow [2024-11-10 10:37:34,844 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 12.571428571428571) internal successors, (176), 14 states have internal predecessors, (176), 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 10:37:34,845 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:37:34,845 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:37:34,845 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-10 10:37:34,845 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-10 10:37:34,846 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:37:34,846 INFO L85 PathProgramCache]: Analyzing trace with hash -1206019800, now seen corresponding path program 4 times [2024-11-10 10:37:34,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:37:34,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408759606] [2024-11-10 10:37:34,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:37:34,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:37:34,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:37:34,957 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 10:37:34,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:37:34,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408759606] [2024-11-10 10:37:34,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [408759606] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:37:34,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:37:34,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 10:37:34,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064334160] [2024-11-10 10:37:34,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:37:34,963 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 10:37:34,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:37:34,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 10:37:34,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 10:37:34,964 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 60 [2024-11-10 10:37:34,964 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 69 transitions, 250 flow. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 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 10:37:34,964 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:37:34,964 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 60 [2024-11-10 10:37:34,964 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:37:37,890 INFO L124 PetriNetUnfolderBase]: 32602/45048 cut-off events. [2024-11-10 10:37:37,890 INFO L125 PetriNetUnfolderBase]: For 29815/29815 co-relation queries the response was YES. [2024-11-10 10:37:38,080 INFO L83 FinitePrefix]: Finished finitePrefix Result has 120816 conditions, 45048 events. 32602/45048 cut-off events. For 29815/29815 co-relation queries the response was YES. Maximal size of possible extension queue 946. Compared 265158 event pairs, 12735 based on Foata normal form. 540/45579 useless extension candidates. Maximal degree in co-relation 120775. Up to 39090 conditions per place. [2024-11-10 10:37:38,242 INFO L140 encePairwiseOnDemand]: 57/60 looper letters, 86 selfloop transitions, 2 changer transitions 0/93 dead transitions. [2024-11-10 10:37:38,242 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 93 transitions, 503 flow [2024-11-10 10:37:38,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 10:37:38,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 10:37:38,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 102 transitions. [2024-11-10 10:37:38,244 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5666666666666667 [2024-11-10 10:37:38,244 INFO L175 Difference]: Start difference. First operand has 89 places, 69 transitions, 250 flow. Second operand 3 states and 102 transitions. [2024-11-10 10:37:38,244 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 93 transitions, 503 flow [2024-11-10 10:37:39,023 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 93 transitions, 487 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-11-10 10:37:39,025 INFO L231 Difference]: Finished difference. Result has 85 places, 67 transitions, 234 flow [2024-11-10 10:37:39,025 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=234, PETRI_PLACES=85, PETRI_TRANSITIONS=67} [2024-11-10 10:37:39,026 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, 17 predicate places. [2024-11-10 10:37:39,027 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 67 transitions, 234 flow [2024-11-10 10:37:39,027 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 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 10:37:39,027 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:37:39,027 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:37:39,028 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-10 10:37:39,028 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-10 10:37:39,029 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:37:39,029 INFO L85 PathProgramCache]: Analyzing trace with hash 147480268, now seen corresponding path program 5 times [2024-11-10 10:37:39,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:37:39,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468902700] [2024-11-10 10:37:39,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:37:39,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:37:39,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:37:41,022 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 10:37:41,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:37:41,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468902700] [2024-11-10 10:37:41,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1468902700] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:37:41,024 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:37:41,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-11-10 10:37:41,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241446536] [2024-11-10 10:37:41,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:37:41,025 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-10 10:37:41,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:37:41,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-10 10:37:41,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2024-11-10 10:37:41,028 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 60 [2024-11-10 10:37:41,028 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 67 transitions, 234 flow. Second operand has 14 states, 14 states have (on average 12.571428571428571) internal successors, (176), 14 states have internal predecessors, (176), 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 10:37:41,028 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:37:41,029 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 60 [2024-11-10 10:37:41,029 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:37:47,901 INFO L124 PetriNetUnfolderBase]: 60054/84046 cut-off events. [2024-11-10 10:37:47,901 INFO L125 PetriNetUnfolderBase]: For 48861/48861 co-relation queries the response was YES. [2024-11-10 10:37:48,201 INFO L83 FinitePrefix]: Finished finitePrefix Result has 221306 conditions, 84046 events. 60054/84046 cut-off events. For 48861/48861 co-relation queries the response was YES. Maximal size of possible extension queue 1897. Compared 545885 event pairs, 9538 based on Foata normal form. 1/84038 useless extension candidates. Maximal degree in co-relation 169958. Up to 24934 conditions per place. [2024-11-10 10:37:48,410 INFO L140 encePairwiseOnDemand]: 44/60 looper letters, 291 selfloop transitions, 26 changer transitions 10/332 dead transitions. [2024-11-10 10:37:48,410 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 332 transitions, 1832 flow [2024-11-10 10:37:48,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-10 10:37:48,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-10 10:37:48,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 416 transitions. [2024-11-10 10:37:48,413 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4622222222222222 [2024-11-10 10:37:48,413 INFO L175 Difference]: Start difference. First operand has 85 places, 67 transitions, 234 flow. Second operand 15 states and 416 transitions. [2024-11-10 10:37:48,413 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 332 transitions, 1832 flow [2024-11-10 10:37:49,200 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 332 transitions, 1812 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-10 10:37:49,203 INFO L231 Difference]: Finished difference. Result has 109 places, 87 transitions, 472 flow [2024-11-10 10:37:49,203 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=472, PETRI_PLACES=109, PETRI_TRANSITIONS=87} [2024-11-10 10:37:49,204 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, 41 predicate places. [2024-11-10 10:37:49,204 INFO L471 AbstractCegarLoop]: Abstraction has has 109 places, 87 transitions, 472 flow [2024-11-10 10:37:49,204 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 12.571428571428571) internal successors, (176), 14 states have internal predecessors, (176), 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 10:37:49,205 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:37:49,205 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:37:49,205 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-10 10:37:49,205 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-10 10:37:49,206 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:37:49,206 INFO L85 PathProgramCache]: Analyzing trace with hash -220437026, now seen corresponding path program 6 times [2024-11-10 10:37:49,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:37:49,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578253611] [2024-11-10 10:37:49,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:37:49,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:37:49,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:37:50,703 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 10:37:50,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:37:50,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578253611] [2024-11-10 10:37:50,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578253611] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:37:50,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:37:50,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-11-10 10:37:50,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451144303] [2024-11-10 10:37:50,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:37:50,708 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-10 10:37:50,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:37:50,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-10 10:37:50,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2024-11-10 10:37:50,711 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 60 [2024-11-10 10:37:50,712 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 87 transitions, 472 flow. Second operand has 14 states, 14 states have (on average 12.571428571428571) internal successors, (176), 14 states have internal predecessors, (176), 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 10:37:50,712 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:37:50,712 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 60 [2024-11-10 10:37:50,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:38:01,858 INFO L124 PetriNetUnfolderBase]: 88783/125108 cut-off events. [2024-11-10 10:38:01,858 INFO L125 PetriNetUnfolderBase]: For 190066/190066 co-relation queries the response was YES. [2024-11-10 10:38:02,674 INFO L83 FinitePrefix]: Finished finitePrefix Result has 380610 conditions, 125108 events. 88783/125108 cut-off events. For 190066/190066 co-relation queries the response was YES. Maximal size of possible extension queue 2790. Compared 862443 event pairs, 14208 based on Foata normal form. 1/125102 useless extension candidates. Maximal degree in co-relation 380310. Up to 36303 conditions per place. [2024-11-10 10:38:03,113 INFO L140 encePairwiseOnDemand]: 45/60 looper letters, 311 selfloop transitions, 48 changer transitions 10/374 dead transitions. [2024-11-10 10:38:03,113 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 374 transitions, 2595 flow [2024-11-10 10:38:03,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-10 10:38:03,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-10 10:38:03,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 413 transitions. [2024-11-10 10:38:03,116 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4588888888888889 [2024-11-10 10:38:03,116 INFO L175 Difference]: Start difference. First operand has 109 places, 87 transitions, 472 flow. Second operand 15 states and 413 transitions. [2024-11-10 10:38:03,116 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 374 transitions, 2595 flow [2024-11-10 10:38:07,712 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 374 transitions, 2563 flow, removed 10 selfloop flow, removed 3 redundant places. [2024-11-10 10:38:07,715 INFO L231 Difference]: Finished difference. Result has 131 places, 119 transitions, 972 flow [2024-11-10 10:38:07,715 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=60, PETRI_DIFFERENCE_MINUEND_FLOW=460, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=972, PETRI_PLACES=131, PETRI_TRANSITIONS=119} [2024-11-10 10:38:07,716 INFO L277 CegarLoopForPetriNet]: 68 programPoint places, 63 predicate places. [2024-11-10 10:38:07,716 INFO L471 AbstractCegarLoop]: Abstraction has has 131 places, 119 transitions, 972 flow [2024-11-10 10:38:07,717 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 12.571428571428571) internal successors, (176), 14 states have internal predecessors, (176), 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 10:38:07,717 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:38:07,717 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:38:07,717 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-10 10:38:07,717 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-10 10:38:07,718 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:38:07,718 INFO L85 PathProgramCache]: Analyzing trace with hash 1346558056, now seen corresponding path program 7 times [2024-11-10 10:38:07,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:38:07,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588531673] [2024-11-10 10:38:07,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:38:07,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:38:07,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:38:09,070 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 10:38:09,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:38:09,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588531673] [2024-11-10 10:38:09,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1588531673] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:38:09,071 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:38:09,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-11-10 10:38:09,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984428089] [2024-11-10 10:38:09,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:38:09,072 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-10 10:38:09,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:38:09,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-10 10:38:09,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2024-11-10 10:38:09,073 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 60 [2024-11-10 10:38:09,074 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 119 transitions, 972 flow. Second operand has 14 states, 14 states have (on average 12.571428571428571) internal successors, (176), 14 states have internal predecessors, (176), 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 10:38:09,074 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:38:09,074 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 60 [2024-11-10 10:38:09,074 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand