./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/test-easy10.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a046e57d Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/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 58ff882a2a27d6746f141646b2befb8bb2c361fcab13fbe9966095432ec78b12 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-13 07:16:44,824 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-13 07:16:44,900 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-13 07:16:44,906 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-13 07:16:44,907 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-13 07:16:44,940 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-13 07:16:44,941 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-13 07:16:44,941 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-13 07:16:44,942 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-13 07:16:44,943 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-13 07:16:44,943 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-13 07:16:44,944 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-13 07:16:44,944 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-13 07:16:44,946 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-13 07:16:44,947 INFO L153 SettingsManager]: * Use SBE=true [2024-10-13 07:16:44,947 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-13 07:16:44,947 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-13 07:16:44,948 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-13 07:16:44,948 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-13 07:16:44,948 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-13 07:16:44,952 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-13 07:16:44,952 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-13 07:16:44,953 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-13 07:16:44,953 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-13 07:16:44,953 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-13 07:16:44,954 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-13 07:16:44,954 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-13 07:16:44,954 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-13 07:16:44,955 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-13 07:16:44,955 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-13 07:16:44,955 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-13 07:16:44,955 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-13 07:16:44,955 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 07:16:44,956 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-13 07:16:44,956 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-13 07:16:44,956 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-13 07:16:44,956 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-13 07:16:44,957 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-13 07:16:44,957 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-13 07:16:44,957 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-13 07:16:44,957 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-13 07:16:44,959 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-13 07:16:44,959 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 58ff882a2a27d6746f141646b2befb8bb2c361fcab13fbe9966095432ec78b12 [2024-10-13 07:16:45,221 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-13 07:16:45,243 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-13 07:16:45,246 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-13 07:16:45,247 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-13 07:16:45,248 INFO L274 PluginConnector]: CDTParser initialized [2024-10-13 07:16:45,249 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/test-easy10.wvr.c [2024-10-13 07:16:46,735 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-13 07:16:46,932 INFO L384 CDTParser]: Found 1 translation units. [2024-10-13 07:16:46,933 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/test-easy10.wvr.c [2024-10-13 07:16:46,942 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cf12b4409/4bdb4df163ad460883486e20fef5ddcc/FLAG533053399 [2024-10-13 07:16:47,321 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cf12b4409/4bdb4df163ad460883486e20fef5ddcc [2024-10-13 07:16:47,323 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-13 07:16:47,324 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-13 07:16:47,326 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-13 07:16:47,326 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-13 07:16:47,335 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-13 07:16:47,337 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:16:47" (1/1) ... [2024-10-13 07:16:47,338 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6336a4ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:16:47, skipping insertion in model container [2024-10-13 07:16:47,339 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:16:47" (1/1) ... [2024-10-13 07:16:47,365 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-13 07:16:47,609 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/test-easy10.wvr.c[3959,3972] [2024-10-13 07:16:47,614 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 07:16:47,635 INFO L200 MainTranslator]: Completed pre-run [2024-10-13 07:16:47,659 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/test-easy10.wvr.c[3959,3972] [2024-10-13 07:16:47,660 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 07:16:47,678 INFO L204 MainTranslator]: Completed translation [2024-10-13 07:16:47,679 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:16:47 WrapperNode [2024-10-13 07:16:47,679 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-13 07:16:47,684 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-13 07:16:47,684 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-13 07:16:47,684 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-13 07:16:47,692 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:16:47" (1/1) ... [2024-10-13 07:16:47,703 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:16:47" (1/1) ... [2024-10-13 07:16:47,742 INFO L138 Inliner]: procedures = 22, calls = 64, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 171 [2024-10-13 07:16:47,743 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-13 07:16:47,744 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-13 07:16:47,745 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-13 07:16:47,745 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-13 07:16:47,756 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:16:47" (1/1) ... [2024-10-13 07:16:47,757 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:16:47" (1/1) ... [2024-10-13 07:16:47,759 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:16:47" (1/1) ... [2024-10-13 07:16:47,785 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]. [2024-10-13 07:16:47,785 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:16:47" (1/1) ... [2024-10-13 07:16:47,785 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:16:47" (1/1) ... [2024-10-13 07:16:47,790 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:16:47" (1/1) ... [2024-10-13 07:16:47,792 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:16:47" (1/1) ... [2024-10-13 07:16:47,794 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:16:47" (1/1) ... [2024-10-13 07:16:47,795 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:16:47" (1/1) ... [2024-10-13 07:16:47,797 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-13 07:16:47,798 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-13 07:16:47,798 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-13 07:16:47,798 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-13 07:16:47,799 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:16:47" (1/1) ... [2024-10-13 07:16:47,807 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 07:16:47,818 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 07:16:47,843 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-13 07:16:47,848 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-13 07:16:47,907 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-13 07:16:47,907 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-13 07:16:47,907 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-13 07:16:47,907 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-13 07:16:47,908 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-13 07:16:47,908 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-10-13 07:16:47,908 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-10-13 07:16:47,908 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-10-13 07:16:47,908 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-10-13 07:16:47,908 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-13 07:16:47,908 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-13 07:16:47,908 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-13 07:16:47,908 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-13 07:16:47,909 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-13 07:16:47,910 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-13 07:16:48,011 INFO L238 CfgBuilder]: Building ICFG [2024-10-13 07:16:48,013 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-13 07:16:48,240 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-13 07:16:48,240 INFO L287 CfgBuilder]: Performing block encoding [2024-10-13 07:16:48,403 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-13 07:16:48,403 INFO L314 CfgBuilder]: Removed 0 assume(true) statements. [2024-10-13 07:16:48,403 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:16:48 BoogieIcfgContainer [2024-10-13 07:16:48,404 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-13 07:16:48,406 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-13 07:16:48,410 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-13 07:16:48,416 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-13 07:16:48,417 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:16:47" (1/3) ... [2024-10-13 07:16:48,417 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@746e99a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:16:48, skipping insertion in model container [2024-10-13 07:16:48,418 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:16:47" (2/3) ... [2024-10-13 07:16:48,418 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@746e99a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:16:48, skipping insertion in model container [2024-10-13 07:16:48,418 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:16:48" (3/3) ... [2024-10-13 07:16:48,419 INFO L112 eAbstractionObserver]: Analyzing ICFG test-easy10.wvr.c [2024-10-13 07:16:48,437 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-13 07:16:48,437 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-13 07:16:48,438 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-13 07:16:48,502 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-10-13 07:16:48,540 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 65 places, 52 transitions, 132 flow [2024-10-13 07:16:48,579 INFO L124 PetriNetUnfolderBase]: 0/48 cut-off events. [2024-10-13 07:16:48,579 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-10-13 07:16:48,581 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65 conditions, 48 events. 0/48 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 101 event pairs, 0 based on Foata normal form. 0/47 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2024-10-13 07:16:48,582 INFO L82 GeneralOperation]: Start removeDead. Operand has 65 places, 52 transitions, 132 flow [2024-10-13 07:16:48,585 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 60 places, 47 transitions, 118 flow [2024-10-13 07:16:48,595 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-13 07:16:48,601 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;@691f0fad, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-13 07:16:48,602 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-10-13 07:16:48,621 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-13 07:16:48,624 INFO L124 PetriNetUnfolderBase]: 0/46 cut-off events. [2024-10-13 07:16:48,624 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-10-13 07:16:48,625 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:16:48,625 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] [2024-10-13 07:16:48,626 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)] === [2024-10-13 07:16:48,632 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:16:48,632 INFO L85 PathProgramCache]: Analyzing trace with hash -571517718, now seen corresponding path program 1 times [2024-10-13 07:16:48,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:16:48,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289595417] [2024-10-13 07:16:48,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:16:48,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:16:48,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:16:49,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:16:49,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:16:49,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289595417] [2024-10-13 07:16:49,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289595417] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:16:49,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 07:16:49,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 07:16:49,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530913907] [2024-10-13 07:16:49,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:16:49,285 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 07:16:49,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:16:49,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 07:16:49,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 07:16:49,351 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 52 [2024-10-13 07:16:49,354 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 47 transitions, 118 flow. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:16:49,354 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:16:49,354 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 52 [2024-10-13 07:16:49,359 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:16:49,636 INFO L124 PetriNetUnfolderBase]: 637/1259 cut-off events. [2024-10-13 07:16:49,636 INFO L125 PetriNetUnfolderBase]: For 147/147 co-relation queries the response was YES. [2024-10-13 07:16:49,646 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2366 conditions, 1259 events. 637/1259 cut-off events. For 147/147 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 7937 event pairs, 160 based on Foata normal form. 9/1195 useless extension candidates. Maximal degree in co-relation 2039. Up to 825 conditions per place. [2024-10-13 07:16:49,658 INFO L140 encePairwiseOnDemand]: 49/52 looper letters, 30 selfloop transitions, 2 changer transitions 0/56 dead transitions. [2024-10-13 07:16:49,658 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 56 transitions, 209 flow [2024-10-13 07:16:49,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 07:16:49,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 07:16:49,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 117 transitions. [2024-10-13 07:16:49,671 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.75 [2024-10-13 07:16:49,673 INFO L175 Difference]: Start difference. First operand has 60 places, 47 transitions, 118 flow. Second operand 3 states and 117 transitions. [2024-10-13 07:16:49,674 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 56 transitions, 209 flow [2024-10-13 07:16:49,679 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 56 transitions, 187 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-10-13 07:16:49,683 INFO L231 Difference]: Finished difference. Result has 55 places, 47 transitions, 110 flow [2024-10-13 07:16:49,686 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=110, PETRI_PLACES=55, PETRI_TRANSITIONS=47} [2024-10-13 07:16:49,691 INFO L277 CegarLoopForPetriNet]: 60 programPoint places, -5 predicate places. [2024-10-13 07:16:49,691 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 47 transitions, 110 flow [2024-10-13 07:16:49,691 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:16:49,692 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:16:49,692 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] [2024-10-13 07:16:49,693 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-13 07:16:49,693 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)] === [2024-10-13 07:16:49,693 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:16:49,694 INFO L85 PathProgramCache]: Analyzing trace with hash 683831154, now seen corresponding path program 2 times [2024-10-13 07:16:49,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:16:49,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323600506] [2024-10-13 07:16:49,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:16:49,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:16:49,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:16:49,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:16:49,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:16:49,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323600506] [2024-10-13 07:16:49,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323600506] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:16:49,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 07:16:49,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 07:16:49,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650444449] [2024-10-13 07:16:49,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:16:49,986 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 07:16:49,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:16:49,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 07:16:49,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 07:16:49,994 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 52 [2024-10-13 07:16:49,994 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 47 transitions, 110 flow. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:16:49,996 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:16:49,996 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 52 [2024-10-13 07:16:49,996 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:16:50,191 INFO L124 PetriNetUnfolderBase]: 597/1161 cut-off events. [2024-10-13 07:16:50,193 INFO L125 PetriNetUnfolderBase]: For 91/91 co-relation queries the response was YES. [2024-10-13 07:16:50,196 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2184 conditions, 1161 events. 597/1161 cut-off events. For 91/91 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 7158 event pairs, 424 based on Foata normal form. 24/1137 useless extension candidates. Maximal degree in co-relation 2045. Up to 853 conditions per place. [2024-10-13 07:16:50,204 INFO L140 encePairwiseOnDemand]: 49/52 looper letters, 30 selfloop transitions, 2 changer transitions 0/56 dead transitions. [2024-10-13 07:16:50,205 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 56 transitions, 196 flow [2024-10-13 07:16:50,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 07:16:50,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 07:16:50,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 117 transitions. [2024-10-13 07:16:50,209 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.75 [2024-10-13 07:16:50,209 INFO L175 Difference]: Start difference. First operand has 55 places, 47 transitions, 110 flow. Second operand 3 states and 117 transitions. [2024-10-13 07:16:50,209 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 56 transitions, 196 flow [2024-10-13 07:16:50,210 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 56 transitions, 192 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-13 07:16:50,214 INFO L231 Difference]: Finished difference. Result has 56 places, 47 transitions, 114 flow [2024-10-13 07:16:50,214 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=114, PETRI_PLACES=56, PETRI_TRANSITIONS=47} [2024-10-13 07:16:50,215 INFO L277 CegarLoopForPetriNet]: 60 programPoint places, -4 predicate places. [2024-10-13 07:16:50,215 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 47 transitions, 114 flow [2024-10-13 07:16:50,216 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:16:50,216 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:16:50,216 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] [2024-10-13 07:16:50,216 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-13 07:16:50,217 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)] === [2024-10-13 07:16:50,217 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:16:50,218 INFO L85 PathProgramCache]: Analyzing trace with hash 1382445256, now seen corresponding path program 3 times [2024-10-13 07:16:50,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:16:50,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887968130] [2024-10-13 07:16:50,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:16:50,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:16:50,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:16:50,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:16:50,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:16:50,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887968130] [2024-10-13 07:16:50,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1887968130] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:16:50,448 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 07:16:50,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 07:16:50,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148947164] [2024-10-13 07:16:50,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:16:50,449 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 07:16:50,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:16:50,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 07:16:50,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 07:16:50,454 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 52 [2024-10-13 07:16:50,454 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 47 transitions, 114 flow. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:16:50,455 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:16:50,456 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 52 [2024-10-13 07:16:50,456 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:16:50,614 INFO L124 PetriNetUnfolderBase]: 599/1145 cut-off events. [2024-10-13 07:16:50,615 INFO L125 PetriNetUnfolderBase]: For 144/149 co-relation queries the response was YES. [2024-10-13 07:16:50,618 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2253 conditions, 1145 events. 599/1145 cut-off events. For 144/149 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 6908 event pairs, 142 based on Foata normal form. 23/1119 useless extension candidates. Maximal degree in co-relation 2222. Up to 857 conditions per place. [2024-10-13 07:16:50,624 INFO L140 encePairwiseOnDemand]: 49/52 looper letters, 32 selfloop transitions, 2 changer transitions 0/58 dead transitions. [2024-10-13 07:16:50,625 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 58 transitions, 209 flow [2024-10-13 07:16:50,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 07:16:50,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 07:16:50,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 119 transitions. [2024-10-13 07:16:50,628 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7628205128205128 [2024-10-13 07:16:50,628 INFO L175 Difference]: Start difference. First operand has 56 places, 47 transitions, 114 flow. Second operand 3 states and 119 transitions. [2024-10-13 07:16:50,628 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 58 transitions, 209 flow [2024-10-13 07:16:50,629 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 58 transitions, 205 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-13 07:16:50,632 INFO L231 Difference]: Finished difference. Result has 57 places, 47 transitions, 118 flow [2024-10-13 07:16:50,632 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=118, PETRI_PLACES=57, PETRI_TRANSITIONS=47} [2024-10-13 07:16:50,634 INFO L277 CegarLoopForPetriNet]: 60 programPoint places, -3 predicate places. [2024-10-13 07:16:50,634 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 47 transitions, 118 flow [2024-10-13 07:16:50,634 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:16:50,635 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:16:50,635 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] [2024-10-13 07:16:50,635 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-13 07:16:50,635 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)] === [2024-10-13 07:16:50,636 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:16:50,637 INFO L85 PathProgramCache]: Analyzing trace with hash -1544007566, now seen corresponding path program 4 times [2024-10-13 07:16:50,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:16:50,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699819011] [2024-10-13 07:16:50,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:16:50,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:16:50,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:16:50,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:16:50,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:16:50,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699819011] [2024-10-13 07:16:50,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699819011] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:16:50,799 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 07:16:50,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-13 07:16:50,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092896128] [2024-10-13 07:16:50,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:16:50,800 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-13 07:16:50,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:16:50,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-13 07:16:50,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-13 07:16:50,805 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 52 [2024-10-13 07:16:50,806 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 47 transitions, 118 flow. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:16:50,806 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:16:50,806 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 52 [2024-10-13 07:16:50,806 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:16:50,955 INFO L124 PetriNetUnfolderBase]: 507/1019 cut-off events. [2024-10-13 07:16:50,956 INFO L125 PetriNetUnfolderBase]: For 239/239 co-relation queries the response was YES. [2024-10-13 07:16:50,960 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2046 conditions, 1019 events. 507/1019 cut-off events. For 239/239 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 5990 event pairs, 156 based on Foata normal form. 16/986 useless extension candidates. Maximal degree in co-relation 2028. Up to 645 conditions per place. [2024-10-13 07:16:50,966 INFO L140 encePairwiseOnDemand]: 49/52 looper letters, 28 selfloop transitions, 2 changer transitions 0/54 dead transitions. [2024-10-13 07:16:50,966 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 54 transitions, 198 flow [2024-10-13 07:16:50,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-13 07:16:50,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-13 07:16:50,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 115 transitions. [2024-10-13 07:16:50,970 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7371794871794872 [2024-10-13 07:16:50,970 INFO L175 Difference]: Start difference. First operand has 57 places, 47 transitions, 118 flow. Second operand 3 states and 115 transitions. [2024-10-13 07:16:50,970 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 54 transitions, 198 flow [2024-10-13 07:16:50,971 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 54 transitions, 194 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-13 07:16:50,972 INFO L231 Difference]: Finished difference. Result has 58 places, 47 transitions, 122 flow [2024-10-13 07:16:50,974 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=122, PETRI_PLACES=58, PETRI_TRANSITIONS=47} [2024-10-13 07:16:50,974 INFO L277 CegarLoopForPetriNet]: 60 programPoint places, -2 predicate places. [2024-10-13 07:16:50,975 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 47 transitions, 122 flow [2024-10-13 07:16:50,975 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:16:50,976 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:16:50,976 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] [2024-10-13 07:16:50,976 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-13 07:16:50,977 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)] === [2024-10-13 07:16:50,977 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:16:50,977 INFO L85 PathProgramCache]: Analyzing trace with hash 161657270, now seen corresponding path program 5 times [2024-10-13 07:16:50,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:16:50,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883355328] [2024-10-13 07:16:50,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:16:50,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:16:51,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:16:53,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:16:53,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:16:53,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883355328] [2024-10-13 07:16:53,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883355328] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:16:53,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 07:16:53,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-10-13 07:16:53,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229193247] [2024-10-13 07:16:53,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:16:53,247 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-13 07:16:53,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:16:53,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-13 07:16:53,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2024-10-13 07:16:53,418 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 52 [2024-10-13 07:16:53,419 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 47 transitions, 122 flow. Second operand has 14 states, 14 states have (on average 15.714285714285714) internal successors, (220), 14 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:16:53,419 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:16:53,420 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 52 [2024-10-13 07:16:53,420 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:16:56,250 INFO L124 PetriNetUnfolderBase]: 13819/19920 cut-off events. [2024-10-13 07:16:56,251 INFO L125 PetriNetUnfolderBase]: For 3305/3305 co-relation queries the response was YES. [2024-10-13 07:16:56,308 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43095 conditions, 19920 events. 13819/19920 cut-off events. For 3305/3305 co-relation queries the response was YES. Maximal size of possible extension queue 436. Compared 116001 event pairs, 1845 based on Foata normal form. 1/19900 useless extension candidates. Maximal degree in co-relation 12347. Up to 4778 conditions per place. [2024-10-13 07:16:56,405 INFO L140 encePairwiseOnDemand]: 39/52 looper letters, 217 selfloop transitions, 13 changer transitions 19/258 dead transitions. [2024-10-13 07:16:56,406 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 258 transitions, 1129 flow [2024-10-13 07:16:56,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-13 07:16:56,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-10-13 07:16:56,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 432 transitions. [2024-10-13 07:16:56,409 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5934065934065934 [2024-10-13 07:16:56,409 INFO L175 Difference]: Start difference. First operand has 58 places, 47 transitions, 122 flow. Second operand 14 states and 432 transitions. [2024-10-13 07:16:56,410 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 258 transitions, 1129 flow [2024-10-13 07:16:56,414 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 258 transitions, 1125 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-13 07:16:56,419 INFO L231 Difference]: Finished difference. Result has 81 places, 59 transitions, 223 flow [2024-10-13 07:16:56,420 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=223, PETRI_PLACES=81, PETRI_TRANSITIONS=59} [2024-10-13 07:16:56,421 INFO L277 CegarLoopForPetriNet]: 60 programPoint places, 21 predicate places. [2024-10-13 07:16:56,423 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 59 transitions, 223 flow [2024-10-13 07:16:56,423 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 15.714285714285714) internal successors, (220), 14 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:16:56,423 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:16:56,423 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] [2024-10-13 07:16:56,423 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-13 07:16:56,424 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)] === [2024-10-13 07:16:56,424 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:16:56,426 INFO L85 PathProgramCache]: Analyzing trace with hash -1223085626, now seen corresponding path program 6 times [2024-10-13 07:16:56,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:16:56,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172930270] [2024-10-13 07:16:56,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:16:56,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:16:56,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:16:58,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:16:58,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:16:58,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172930270] [2024-10-13 07:16:58,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172930270] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:16:58,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 07:16:58,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-10-13 07:16:58,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773496470] [2024-10-13 07:16:58,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:16:58,315 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-13 07:16:58,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:16:58,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-13 07:16:58,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2024-10-13 07:16:58,470 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 52 [2024-10-13 07:16:58,470 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 59 transitions, 223 flow. Second operand has 14 states, 14 states have (on average 15.714285714285714) internal successors, (220), 14 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:16:58,471 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:16:58,471 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 52 [2024-10-13 07:16:58,471 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:17:04,551 INFO L124 PetriNetUnfolderBase]: 37970/55199 cut-off events. [2024-10-13 07:17:04,551 INFO L125 PetriNetUnfolderBase]: For 44563/44563 co-relation queries the response was YES. [2024-10-13 07:17:04,797 INFO L83 FinitePrefix]: Finished finitePrefix Result has 150640 conditions, 55199 events. 37970/55199 cut-off events. For 44563/44563 co-relation queries the response was YES. Maximal size of possible extension queue 1481. Compared 371807 event pairs, 4605 based on Foata normal form. 1/55181 useless extension candidates. Maximal degree in co-relation 150461. Up to 15677 conditions per place. [2024-10-13 07:17:05,049 INFO L140 encePairwiseOnDemand]: 39/52 looper letters, 274 selfloop transitions, 25 changer transitions 10/318 dead transitions. [2024-10-13 07:17:05,050 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 318 transitions, 1826 flow [2024-10-13 07:17:05,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-13 07:17:05,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-10-13 07:17:05,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 434 transitions. [2024-10-13 07:17:05,053 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5961538461538461 [2024-10-13 07:17:05,053 INFO L175 Difference]: Start difference. First operand has 81 places, 59 transitions, 223 flow. Second operand 14 states and 434 transitions. [2024-10-13 07:17:05,053 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 318 transitions, 1826 flow [2024-10-13 07:17:05,899 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 318 transitions, 1784 flow, removed 17 selfloop flow, removed 3 redundant places. [2024-10-13 07:17:05,903 INFO L231 Difference]: Finished difference. Result has 101 places, 81 transitions, 474 flow [2024-10-13 07:17:05,903 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=218, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=474, PETRI_PLACES=101, PETRI_TRANSITIONS=81} [2024-10-13 07:17:05,904 INFO L277 CegarLoopForPetriNet]: 60 programPoint places, 41 predicate places. [2024-10-13 07:17:05,904 INFO L471 AbstractCegarLoop]: Abstraction has has 101 places, 81 transitions, 474 flow [2024-10-13 07:17:05,905 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 15.714285714285714) internal successors, (220), 14 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:17:05,905 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:17:05,905 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 07:17:05,905 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-13 07:17:05,906 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)] === [2024-10-13 07:17:05,907 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:17:05,908 INFO L85 PathProgramCache]: Analyzing trace with hash 610348320, now seen corresponding path program 7 times [2024-10-13 07:17:05,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:17:05,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787703925] [2024-10-13 07:17:05,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:17:05,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:17:05,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:17:07,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:17:07,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:17:07,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787703925] [2024-10-13 07:17:07,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787703925] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:17:07,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 07:17:07,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-10-13 07:17:07,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824832649] [2024-10-13 07:17:07,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:17:07,459 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-13 07:17:07,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:17:07,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-13 07:17:07,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2024-10-13 07:17:07,535 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 52 [2024-10-13 07:17:07,536 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 81 transitions, 474 flow. Second operand has 14 states, 14 states have (on average 15.714285714285714) internal successors, (220), 14 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:17:07,536 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:17:07,536 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 52 [2024-10-13 07:17:07,536 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:17:16,507 INFO L124 PetriNetUnfolderBase]: 62785/91729 cut-off events. [2024-10-13 07:17:16,508 INFO L125 PetriNetUnfolderBase]: For 160282/160282 co-relation queries the response was YES. [2024-10-13 07:17:17,074 INFO L83 FinitePrefix]: Finished finitePrefix Result has 284168 conditions, 91729 events. 62785/91729 cut-off events. For 160282/160282 co-relation queries the response was YES. Maximal size of possible extension queue 2610. Compared 668498 event pairs, 11681 based on Foata normal form. 1/91695 useless extension candidates. Maximal degree in co-relation 283747. Up to 20868 conditions per place. [2024-10-13 07:17:17,622 INFO L140 encePairwiseOnDemand]: 39/52 looper letters, 288 selfloop transitions, 44 changer transitions 11/352 dead transitions. [2024-10-13 07:17:17,623 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 352 transitions, 2495 flow [2024-10-13 07:17:17,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-13 07:17:17,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-10-13 07:17:17,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 428 transitions. [2024-10-13 07:17:17,625 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5879120879120879 [2024-10-13 07:17:17,625 INFO L175 Difference]: Start difference. First operand has 101 places, 81 transitions, 474 flow. Second operand 14 states and 428 transitions. [2024-10-13 07:17:17,625 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 352 transitions, 2495 flow [2024-10-13 07:17:18,779 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 352 transitions, 2455 flow, removed 13 selfloop flow, removed 2 redundant places. [2024-10-13 07:17:18,782 INFO L231 Difference]: Finished difference. Result has 123 places, 112 transitions, 957 flow [2024-10-13 07:17:18,783 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=466, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=957, PETRI_PLACES=123, PETRI_TRANSITIONS=112} [2024-10-13 07:17:18,783 INFO L277 CegarLoopForPetriNet]: 60 programPoint places, 63 predicate places. [2024-10-13 07:17:18,783 INFO L471 AbstractCegarLoop]: Abstraction has has 123 places, 112 transitions, 957 flow [2024-10-13 07:17:18,784 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 15.714285714285714) internal successors, (220), 14 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:17:18,784 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-13 07:17:18,784 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] [2024-10-13 07:17:18,784 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-13 07:17:18,784 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-10-13 07:17:18,785 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 07:17:18,785 INFO L85 PathProgramCache]: Analyzing trace with hash -1973642582, now seen corresponding path program 8 times [2024-10-13 07:17:18,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 07:17:18,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673787075] [2024-10-13 07:17:18,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 07:17:18,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 07:17:18,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 07:17:20,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 07:17:20,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 07:17:20,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673787075] [2024-10-13 07:17:20,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673787075] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 07:17:20,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 07:17:20,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-10-13 07:17:20,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109784631] [2024-10-13 07:17:20,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 07:17:20,634 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-13 07:17:20,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 07:17:20,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-13 07:17:20,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2024-10-13 07:17:20,752 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 52 [2024-10-13 07:17:20,753 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 112 transitions, 957 flow. Second operand has 14 states, 14 states have (on average 15.714285714285714) internal successors, (220), 14 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 07:17:20,753 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-13 07:17:20,753 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 52 [2024-10-13 07:17:20,753 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-13 07:17:41,617 INFO L124 PetriNetUnfolderBase]: 132857/195105 cut-off events. [2024-10-13 07:17:41,618 INFO L125 PetriNetUnfolderBase]: For 713477/713477 co-relation queries the response was YES. [2024-10-13 07:17:43,290 INFO L83 FinitePrefix]: Finished finitePrefix Result has 693616 conditions, 195105 events. 132857/195105 cut-off events. For 713477/713477 co-relation queries the response was YES. Maximal size of possible extension queue 6792. Compared 1613741 event pairs, 25938 based on Foata normal form. 1/195087 useless extension candidates. Maximal degree in co-relation 692556. Up to 61893 conditions per place. [2024-10-13 07:17:44,237 INFO L140 encePairwiseOnDemand]: 39/52 looper letters, 364 selfloop transitions, 49 changer transitions 10/432 dead transitions. [2024-10-13 07:17:44,237 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 432 transitions, 4150 flow [2024-10-13 07:17:44,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-13 07:17:44,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-10-13 07:17:44,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 430 transitions. [2024-10-13 07:17:44,239 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5906593406593407 [2024-10-13 07:17:44,239 INFO L175 Difference]: Start difference. First operand has 123 places, 112 transitions, 957 flow. Second operand 14 states and 430 transitions. [2024-10-13 07:17:44,239 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 432 transitions, 4150 flow