./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/safe016_pso.oepc_pso.opt_tso.oepc_tso.opt.i --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/pthread-wmm/safe016_pso.oepc_pso.opt_tso.oepc_tso.opt.i -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 55711f117aca8cc6da45707674eed41f8615ce4fb09ace088988b9afc0dc0851 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-10 10:18:25,513 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-10 10:18:25,588 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-10 10:18:25,595 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-10 10:18:25,596 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-10 10:18:25,624 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-10 10:18:25,625 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-10 10:18:25,626 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-10 10:18:25,626 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-10 10:18:25,627 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-10 10:18:25,628 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-10 10:18:25,629 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-10 10:18:25,630 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-10 10:18:25,631 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-10 10:18:25,631 INFO L153 SettingsManager]: * Use SBE=true [2024-11-10 10:18:25,632 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-10 10:18:25,632 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-10 10:18:25,632 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-10 10:18:25,632 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-10 10:18:25,633 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-10 10:18:25,633 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-10 10:18:25,634 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-10 10:18:25,635 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-10 10:18:25,635 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-10 10:18:25,635 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-10 10:18:25,635 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-10 10:18:25,635 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-10 10:18:25,635 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-10 10:18:25,636 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-10 10:18:25,636 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-10 10:18:25,636 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-10 10:18:25,636 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-10 10:18:25,636 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 10:18:25,637 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-10 10:18:25,637 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-10 10:18:25,637 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-10 10:18:25,637 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-10 10:18:25,637 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-10 10:18:25,637 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-10 10:18:25,638 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-10 10:18:25,638 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-10 10:18:25,645 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-10 10:18:25,645 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 55711f117aca8cc6da45707674eed41f8615ce4fb09ace088988b9afc0dc0851 [2024-11-10 10:18:25,865 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-10 10:18:25,894 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-10 10:18:25,899 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-10 10:18:25,900 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-10 10:18:25,904 INFO L274 PluginConnector]: CDTParser initialized [2024-11-10 10:18:25,906 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe016_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2024-11-10 10:18:27,365 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-10 10:18:27,575 INFO L384 CDTParser]: Found 1 translation units. [2024-11-10 10:18:27,576 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe016_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2024-11-10 10:18:27,589 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c952d5e7b/075cc94b2c2e49e3a40e41794a7933f4/FLAGff4a00f48 [2024-11-10 10:18:27,601 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c952d5e7b/075cc94b2c2e49e3a40e41794a7933f4 [2024-11-10 10:18:27,603 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-10 10:18:27,604 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-10 10:18:27,606 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-10 10:18:27,606 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-10 10:18:27,614 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-10 10:18:27,617 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 10:18:27" (1/1) ... [2024-11-10 10:18:27,618 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61ec5c3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:18:27, skipping insertion in model container [2024-11-10 10:18:27,618 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 10:18:27" (1/1) ... [2024-11-10 10:18:27,651 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-10 10:18:27,789 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/pthread-wmm/safe016_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2024-11-10 10:18:27,946 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 10:18:27,969 INFO L200 MainTranslator]: Completed pre-run [2024-11-10 10:18:27,997 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/pthread-wmm/safe016_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2024-11-10 10:18:28,047 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 10:18:28,120 INFO L204 MainTranslator]: Completed translation [2024-11-10 10:18:28,124 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:18:28 WrapperNode [2024-11-10 10:18:28,125 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-10 10:18:28,126 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-10 10:18:28,126 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-10 10:18:28,126 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-10 10:18:28,136 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:18:28" (1/1) ... [2024-11-10 10:18:28,162 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:18:28" (1/1) ... [2024-11-10 10:18:28,210 INFO L138 Inliner]: procedures = 176, calls = 46, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 64 [2024-11-10 10:18:28,210 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-10 10:18:28,211 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-10 10:18:28,211 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-10 10:18:28,211 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-10 10:18:28,231 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:18:28" (1/1) ... [2024-11-10 10:18:28,232 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:18:28" (1/1) ... [2024-11-10 10:18:28,233 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:18:28" (1/1) ... [2024-11-10 10:18:28,246 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 10:18:28,246 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:18:28" (1/1) ... [2024-11-10 10:18:28,247 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:18:28" (1/1) ... [2024-11-10 10:18:28,250 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:18:28" (1/1) ... [2024-11-10 10:18:28,250 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:18:28" (1/1) ... [2024-11-10 10:18:28,251 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:18:28" (1/1) ... [2024-11-10 10:18:28,252 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:18:28" (1/1) ... [2024-11-10 10:18:28,254 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-10 10:18:28,255 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-10 10:18:28,255 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-10 10:18:28,255 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-10 10:18:28,256 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:18:28" (1/1) ... [2024-11-10 10:18:28,267 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 10:18:28,278 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:18:28,297 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 10:18:28,300 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 10:18:28,376 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-10 10:18:28,376 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-10 10:18:28,376 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-11-10 10:18:28,377 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-11-10 10:18:28,377 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-11-10 10:18:28,377 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-11-10 10:18:28,377 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-11-10 10:18:28,377 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-11-10 10:18:28,377 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-11-10 10:18:28,378 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-11-10 10:18:28,378 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-10 10:18:28,378 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-10 10:18:28,378 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-10 10:18:28,378 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-10 10:18:28,380 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 10:18:28,551 INFO L256 CfgBuilder]: Building ICFG [2024-11-10 10:18:28,553 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-10 10:18:28,897 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-10 10:18:28,897 INFO L307 CfgBuilder]: Performing block encoding [2024-11-10 10:18:29,004 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-10 10:18:29,004 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-10 10:18:29,005 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 10:18:29 BoogieIcfgContainer [2024-11-10 10:18:29,005 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-10 10:18:29,007 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-10 10:18:29,007 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-10 10:18:29,011 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-10 10:18:29,011 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 10:18:27" (1/3) ... [2024-11-10 10:18:29,012 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fc84c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 10:18:29, skipping insertion in model container [2024-11-10 10:18:29,012 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:18:28" (2/3) ... [2024-11-10 10:18:29,012 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fc84c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 10:18:29, skipping insertion in model container [2024-11-10 10:18:29,012 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 10:18:29" (3/3) ... [2024-11-10 10:18:29,055 INFO L112 eAbstractionObserver]: Analyzing ICFG safe016_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2024-11-10 10:18:29,074 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-10 10:18:29,075 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-10 10:18:29,075 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-10 10:18:29,128 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-10 10:18:29,159 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 57 places, 45 transitions, 106 flow [2024-11-10 10:18:29,183 INFO L124 PetriNetUnfolderBase]: 1/41 cut-off events. [2024-11-10 10:18:29,183 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 10:18:29,186 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54 conditions, 41 events. 1/41 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 76 event pairs, 0 based on Foata normal form. 0/39 useless extension candidates. Maximal degree in co-relation 45. Up to 2 conditions per place. [2024-11-10 10:18:29,186 INFO L82 GeneralOperation]: Start removeDead. Operand has 57 places, 45 transitions, 106 flow [2024-11-10 10:18:29,189 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 51 places, 38 transitions, 88 flow [2024-11-10 10:18:29,197 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 10:18:29,203 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;@4cdf247f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 10:18:29,203 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-11-10 10:18:29,214 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 10:18:29,214 INFO L124 PetriNetUnfolderBase]: 0/37 cut-off events. [2024-11-10 10:18:29,214 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 10:18:29,214 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:18:29,215 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:18:29,216 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 10:18:29,221 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:18:29,221 INFO L85 PathProgramCache]: Analyzing trace with hash -975245287, now seen corresponding path program 1 times [2024-11-10 10:18:29,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:18:29,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478157943] [2024-11-10 10:18:29,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:18:29,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:18:29,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:18:29,811 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 10:18:29,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:18:29,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478157943] [2024-11-10 10:18:29,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478157943] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:18:29,814 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:18:29,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-10 10:18:29,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335833076] [2024-11-10 10:18:29,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:18:29,823 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 10:18:29,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:18:29,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 10:18:29,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-10 10:18:29,862 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-11-10 10:18:29,865 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 38 transitions, 88 flow. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 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 10:18:29,865 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:18:29,865 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-11-10 10:18:29,866 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:18:35,431 INFO L124 PetriNetUnfolderBase]: 52674/71108 cut-off events. [2024-11-10 10:18:35,432 INFO L125 PetriNetUnfolderBase]: For 319/319 co-relation queries the response was YES. [2024-11-10 10:18:35,594 INFO L83 FinitePrefix]: Finished finitePrefix Result has 142020 conditions, 71108 events. 52674/71108 cut-off events. For 319/319 co-relation queries the response was YES. Maximal size of possible extension queue 2092. Compared 435467 event pairs, 16301 based on Foata normal form. 1676/72761 useless extension candidates. Maximal degree in co-relation 142008. Up to 31940 conditions per place. [2024-11-10 10:18:35,834 INFO L140 encePairwiseOnDemand]: 35/45 looper letters, 56 selfloop transitions, 7 changer transitions 75/143 dead transitions. [2024-11-10 10:18:35,834 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 143 transitions, 583 flow [2024-11-10 10:18:35,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-10 10:18:35,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-10 10:18:35,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 203 transitions. [2024-11-10 10:18:35,850 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6444444444444445 [2024-11-10 10:18:35,853 INFO L175 Difference]: Start difference. First operand has 51 places, 38 transitions, 88 flow. Second operand 7 states and 203 transitions. [2024-11-10 10:18:35,854 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 143 transitions, 583 flow [2024-11-10 10:18:35,866 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 143 transitions, 576 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-10 10:18:35,876 INFO L231 Difference]: Finished difference. Result has 59 places, 44 transitions, 170 flow [2024-11-10 10:18:35,878 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=170, PETRI_PLACES=59, PETRI_TRANSITIONS=44} [2024-11-10 10:18:35,884 INFO L277 CegarLoopForPetriNet]: 51 programPoint places, 8 predicate places. [2024-11-10 10:18:35,885 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 44 transitions, 170 flow [2024-11-10 10:18:35,885 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 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 10:18:35,885 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:18:35,886 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:18:35,886 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-10 10:18:35,886 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 10:18:35,887 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:18:35,887 INFO L85 PathProgramCache]: Analyzing trace with hash -155092646, now seen corresponding path program 1 times [2024-11-10 10:18:35,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:18:35,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666086302] [2024-11-10 10:18:35,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:18:35,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:18:35,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:18:36,082 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 10:18:36,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:18:36,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666086302] [2024-11-10 10:18:36,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1666086302] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:18:36,084 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:18:36,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-10 10:18:36,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124349810] [2024-11-10 10:18:36,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:18:36,085 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 10:18:36,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:18:36,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 10:18:36,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-10 10:18:36,088 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-11-10 10:18:36,088 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 44 transitions, 170 flow. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 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 10:18:36,088 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:18:36,088 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-11-10 10:18:36,088 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:18:39,976 INFO L124 PetriNetUnfolderBase]: 49367/66802 cut-off events. [2024-11-10 10:18:39,977 INFO L125 PetriNetUnfolderBase]: For 65118/65118 co-relation queries the response was YES. [2024-11-10 10:18:40,172 INFO L83 FinitePrefix]: Finished finitePrefix Result has 181644 conditions, 66802 events. 49367/66802 cut-off events. For 65118/65118 co-relation queries the response was YES. Maximal size of possible extension queue 1937. Compared 408954 event pairs, 4798 based on Foata normal form. 1634/68418 useless extension candidates. Maximal degree in co-relation 181628. Up to 26979 conditions per place. [2024-11-10 10:18:40,366 INFO L140 encePairwiseOnDemand]: 35/45 looper letters, 73 selfloop transitions, 8 changer transitions 106/192 dead transitions. [2024-11-10 10:18:40,367 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 192 transitions, 1080 flow [2024-11-10 10:18:40,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-10 10:18:40,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-10 10:18:40,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 270 transitions. [2024-11-10 10:18:40,372 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6 [2024-11-10 10:18:40,372 INFO L175 Difference]: Start difference. First operand has 59 places, 44 transitions, 170 flow. Second operand 10 states and 270 transitions. [2024-11-10 10:18:40,372 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 192 transitions, 1080 flow [2024-11-10 10:18:40,596 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 192 transitions, 1022 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-10 10:18:40,598 INFO L231 Difference]: Finished difference. Result has 71 places, 48 transitions, 242 flow [2024-11-10 10:18:40,598 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=242, PETRI_PLACES=71, PETRI_TRANSITIONS=48} [2024-11-10 10:18:40,599 INFO L277 CegarLoopForPetriNet]: 51 programPoint places, 20 predicate places. [2024-11-10 10:18:40,599 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 48 transitions, 242 flow [2024-11-10 10:18:40,599 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 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 10:18:40,599 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:18:40,599 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:18:40,600 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-10 10:18:40,600 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 10:18:40,600 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:18:40,600 INFO L85 PathProgramCache]: Analyzing trace with hash -38096550, now seen corresponding path program 1 times [2024-11-10 10:18:40,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:18:40,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427124821] [2024-11-10 10:18:40,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:18:40,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:18:40,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:18:40,704 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 10:18:40,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:18:40,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427124821] [2024-11-10 10:18:40,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1427124821] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:18:40,705 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:18:40,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-10 10:18:40,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78294849] [2024-11-10 10:18:40,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:18:40,706 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 10:18:40,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:18:40,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 10:18:40,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-10 10:18:40,708 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-11-10 10:18:40,708 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 48 transitions, 242 flow. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 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 10:18:40,708 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:18:40,709 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-11-10 10:18:40,709 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:18:45,433 INFO L124 PetriNetUnfolderBase]: 47002/63636 cut-off events. [2024-11-10 10:18:45,434 INFO L125 PetriNetUnfolderBase]: For 150339/150355 co-relation queries the response was YES. [2024-11-10 10:18:45,690 INFO L83 FinitePrefix]: Finished finitePrefix Result has 193296 conditions, 63636 events. 47002/63636 cut-off events. For 150339/150355 co-relation queries the response was YES. Maximal size of possible extension queue 1799. Compared 385408 event pairs, 9107 based on Foata normal form. 1432/65065 useless extension candidates. Maximal degree in co-relation 193271. Up to 27929 conditions per place. [2024-11-10 10:18:45,879 INFO L140 encePairwiseOnDemand]: 35/45 looper letters, 79 selfloop transitions, 16 changer transitions 102/202 dead transitions. [2024-11-10 10:18:45,879 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 202 transitions, 1330 flow [2024-11-10 10:18:45,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-10 10:18:45,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-10 10:18:45,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 270 transitions. [2024-11-10 10:18:45,881 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6 [2024-11-10 10:18:45,881 INFO L175 Difference]: Start difference. First operand has 71 places, 48 transitions, 242 flow. Second operand 10 states and 270 transitions. [2024-11-10 10:18:45,881 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 202 transitions, 1330 flow [2024-11-10 10:18:47,172 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 202 transitions, 1283 flow, removed 21 selfloop flow, removed 3 redundant places. [2024-11-10 10:18:47,183 INFO L231 Difference]: Finished difference. Result has 80 places, 59 transitions, 432 flow [2024-11-10 10:18:47,184 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=227, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=432, PETRI_PLACES=80, PETRI_TRANSITIONS=59} [2024-11-10 10:18:47,185 INFO L277 CegarLoopForPetriNet]: 51 programPoint places, 29 predicate places. [2024-11-10 10:18:47,186 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 59 transitions, 432 flow [2024-11-10 10:18:47,186 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 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 10:18:47,186 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:18:47,186 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:18:47,186 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-10 10:18:47,186 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 10:18:47,190 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:18:47,191 INFO L85 PathProgramCache]: Analyzing trace with hash 1977186745, now seen corresponding path program 1 times [2024-11-10 10:18:47,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:18:47,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483527449] [2024-11-10 10:18:47,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:18:47,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:18:47,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:18:47,445 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 10:18:47,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:18:47,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483527449] [2024-11-10 10:18:47,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [483527449] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:18:47,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:18:47,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-10 10:18:47,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878570909] [2024-11-10 10:18:47,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:18:47,446 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 10:18:47,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:18:47,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 10:18:47,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-10 10:18:47,451 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-11-10 10:18:47,452 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 59 transitions, 432 flow. Second operand has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 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 10:18:47,452 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:18:47,452 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-11-10 10:18:47,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:18:53,624 INFO L124 PetriNetUnfolderBase]: 45353/61470 cut-off events. [2024-11-10 10:18:53,624 INFO L125 PetriNetUnfolderBase]: For 212895/212913 co-relation queries the response was YES. [2024-11-10 10:18:53,869 INFO L83 FinitePrefix]: Finished finitePrefix Result has 204145 conditions, 61470 events. 45353/61470 cut-off events. For 212895/212913 co-relation queries the response was YES. Maximal size of possible extension queue 1707. Compared 367490 event pairs, 2936 based on Foata normal form. 1318/62773 useless extension candidates. Maximal degree in co-relation 204112. Up to 26878 conditions per place. [2024-11-10 10:18:54,035 INFO L140 encePairwiseOnDemand]: 35/45 looper letters, 80 selfloop transitions, 22 changer transitions 98/205 dead transitions. [2024-11-10 10:18:54,035 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 205 transitions, 1644 flow [2024-11-10 10:18:54,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-10 10:18:54,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-10 10:18:54,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 264 transitions. [2024-11-10 10:18:54,037 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5866666666666667 [2024-11-10 10:18:54,037 INFO L175 Difference]: Start difference. First operand has 80 places, 59 transitions, 432 flow. Second operand 10 states and 264 transitions. [2024-11-10 10:18:54,037 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 205 transitions, 1644 flow [2024-11-10 10:18:55,259 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 205 transitions, 1572 flow, removed 36 selfloop flow, removed 4 redundant places. [2024-11-10 10:18:55,261 INFO L231 Difference]: Finished difference. Result has 88 places, 71 transitions, 659 flow [2024-11-10 10:18:55,262 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=392, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=659, PETRI_PLACES=88, PETRI_TRANSITIONS=71} [2024-11-10 10:18:55,262 INFO L277 CegarLoopForPetriNet]: 51 programPoint places, 37 predicate places. [2024-11-10 10:18:55,263 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 71 transitions, 659 flow [2024-11-10 10:18:55,263 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 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 10:18:55,263 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:18:55,263 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:18:55,263 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-10 10:18:55,263 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 10:18:55,264 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:18:55,264 INFO L85 PathProgramCache]: Analyzing trace with hash -729507084, now seen corresponding path program 1 times [2024-11-10 10:18:55,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:18:55,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773024052] [2024-11-10 10:18:55,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:18:55,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:18:55,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:18:55,359 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 10:18:55,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:18:55,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773024052] [2024-11-10 10:18:55,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773024052] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:18:55,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:18:55,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-10 10:18:55,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841955544] [2024-11-10 10:18:55,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:18:55,360 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 10:18:55,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:18:55,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 10:18:55,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-10 10:18:55,362 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-11-10 10:18:55,362 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 71 transitions, 659 flow. Second operand has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 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 10:18:55,362 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:18:55,362 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-11-10 10:18:55,362 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:19:03,408 INFO L124 PetriNetUnfolderBase]: 65897/89335 cut-off events. [2024-11-10 10:19:03,410 INFO L125 PetriNetUnfolderBase]: For 395861/395888 co-relation queries the response was YES. [2024-11-10 10:19:04,071 INFO L83 FinitePrefix]: Finished finitePrefix Result has 312747 conditions, 89335 events. 65897/89335 cut-off events. For 395861/395888 co-relation queries the response was YES. Maximal size of possible extension queue 2492. Compared 560580 event pairs, 15311 based on Foata normal form. 1244/90576 useless extension candidates. Maximal degree in co-relation 312707. Up to 43512 conditions per place. [2024-11-10 10:19:04,257 INFO L140 encePairwiseOnDemand]: 38/45 looper letters, 81 selfloop transitions, 8 changer transitions 76/170 dead transitions. [2024-11-10 10:19:04,258 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 170 transitions, 1688 flow [2024-11-10 10:19:04,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 10:19:04,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 10:19:04,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 169 transitions. [2024-11-10 10:19:04,259 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6259259259259259 [2024-11-10 10:19:04,259 INFO L175 Difference]: Start difference. First operand has 88 places, 71 transitions, 659 flow. Second operand 6 states and 169 transitions. [2024-11-10 10:19:04,259 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 170 transitions, 1688 flow [2024-11-10 10:19:08,373 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 170 transitions, 1652 flow, removed 18 selfloop flow, removed 4 redundant places. [2024-11-10 10:19:08,375 INFO L231 Difference]: Finished difference. Result has 86 places, 61 transitions, 523 flow [2024-11-10 10:19:08,375 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=631, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=523, PETRI_PLACES=86, PETRI_TRANSITIONS=61} [2024-11-10 10:19:08,377 INFO L277 CegarLoopForPetriNet]: 51 programPoint places, 35 predicate places. [2024-11-10 10:19:08,378 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 61 transitions, 523 flow [2024-11-10 10:19:08,378 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 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 10:19:08,378 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:19:08,378 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:19:08,379 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-10 10:19:08,379 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 10:19:08,382 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:19:08,382 INFO L85 PathProgramCache]: Analyzing trace with hash -1490930852, now seen corresponding path program 1 times [2024-11-10 10:19:08,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:19:08,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6200855] [2024-11-10 10:19:08,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:19:08,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:19:08,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:19:08,600 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 10:19:08,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:19:08,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6200855] [2024-11-10 10:19:08,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [6200855] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:19:08,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:19:08,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-10 10:19:08,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404058021] [2024-11-10 10:19:08,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:19:08,606 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 10:19:08,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:19:08,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 10:19:08,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-10 10:19:08,610 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-11-10 10:19:08,610 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 61 transitions, 523 flow. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 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 10:19:08,610 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:19:08,610 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-11-10 10:19:08,610 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:19:12,922 INFO L124 PetriNetUnfolderBase]: 37813/51765 cut-off events. [2024-11-10 10:19:12,922 INFO L125 PetriNetUnfolderBase]: For 222251/222251 co-relation queries the response was YES. [2024-11-10 10:19:13,169 INFO L83 FinitePrefix]: Finished finitePrefix Result has 181767 conditions, 51765 events. 37813/51765 cut-off events. For 222251/222251 co-relation queries the response was YES. Maximal size of possible extension queue 1360. Compared 305456 event pairs, 22207 based on Foata normal form. 608/52369 useless extension candidates. Maximal degree in co-relation 181739. Up to 43056 conditions per place. [2024-11-10 10:19:13,315 INFO L140 encePairwiseOnDemand]: 40/45 looper letters, 77 selfloop transitions, 4 changer transitions 59/145 dead transitions. [2024-11-10 10:19:13,315 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 145 transitions, 1256 flow [2024-11-10 10:19:13,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-10 10:19:13,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-10 10:19:13,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 174 transitions. [2024-11-10 10:19:13,316 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5523809523809524 [2024-11-10 10:19:13,316 INFO L175 Difference]: Start difference. First operand has 86 places, 61 transitions, 523 flow. Second operand 7 states and 174 transitions. [2024-11-10 10:19:13,316 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 145 transitions, 1256 flow [2024-11-10 10:19:13,824 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 145 transitions, 1186 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-11-10 10:19:13,825 INFO L231 Difference]: Finished difference. Result has 87 places, 61 transitions, 497 flow [2024-11-10 10:19:13,825 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=475, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=497, PETRI_PLACES=87, PETRI_TRANSITIONS=61} [2024-11-10 10:19:13,826 INFO L277 CegarLoopForPetriNet]: 51 programPoint places, 36 predicate places. [2024-11-10 10:19:13,826 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 61 transitions, 497 flow [2024-11-10 10:19:13,826 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 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 10:19:13,826 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:19:13,826 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:19:13,826 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-10 10:19:13,827 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 10:19:13,827 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:19:13,827 INFO L85 PathProgramCache]: Analyzing trace with hash -502102048, now seen corresponding path program 1 times [2024-11-10 10:19:13,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:19:13,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249567353] [2024-11-10 10:19:13,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:19:13,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:19:13,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:19:13,925 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 10:19:13,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:19:13,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249567353] [2024-11-10 10:19:13,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [249567353] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:19:13,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:19:13,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-10 10:19:13,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123658760] [2024-11-10 10:19:13,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:19:13,930 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 10:19:13,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:19:13,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 10:19:13,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-10 10:19:13,932 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-11-10 10:19:13,932 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 61 transitions, 497 flow. Second operand has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 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 10:19:13,932 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:19:13,932 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-11-10 10:19:13,932 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:19:22,763 INFO L124 PetriNetUnfolderBase]: 77501/105241 cut-off events. [2024-11-10 10:19:22,763 INFO L125 PetriNetUnfolderBase]: For 349681/349705 co-relation queries the response was YES. [2024-11-10 10:19:23,469 INFO L83 FinitePrefix]: Finished finitePrefix Result has 318285 conditions, 105241 events. 77501/105241 cut-off events. For 349681/349705 co-relation queries the response was YES. Maximal size of possible extension queue 2847. Compared 672408 event pairs, 23112 based on Foata normal form. 1951/107177 useless extension candidates. Maximal degree in co-relation 318257. Up to 30996 conditions per place. [2024-11-10 10:19:24,218 INFO L140 encePairwiseOnDemand]: 39/45 looper letters, 66 selfloop transitions, 7 changer transitions 146/224 dead transitions. [2024-11-10 10:19:24,218 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 224 transitions, 1671 flow [2024-11-10 10:19:24,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-10 10:19:24,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-10 10:19:24,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 292 transitions. [2024-11-10 10:19:24,220 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5898989898989899 [2024-11-10 10:19:24,220 INFO L175 Difference]: Start difference. First operand has 87 places, 61 transitions, 497 flow. Second operand 11 states and 292 transitions. [2024-11-10 10:19:24,221 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 224 transitions, 1671 flow [2024-11-10 10:19:28,072 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 224 transitions, 1627 flow, removed 18 selfloop flow, removed 6 redundant places. [2024-11-10 10:19:28,076 INFO L231 Difference]: Finished difference. Result has 96 places, 53 transitions, 417 flow [2024-11-10 10:19:28,076 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=479, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=417, PETRI_PLACES=96, PETRI_TRANSITIONS=53} [2024-11-10 10:19:28,077 INFO L277 CegarLoopForPetriNet]: 51 programPoint places, 45 predicate places. [2024-11-10 10:19:28,077 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 53 transitions, 417 flow [2024-11-10 10:19:28,077 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 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 10:19:28,077 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:19:28,077 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:19:28,078 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-10 10:19:28,078 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)] === [2024-11-10 10:19:28,078 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:19:28,078 INFO L85 PathProgramCache]: Analyzing trace with hash 25769713, now seen corresponding path program 1 times [2024-11-10 10:19:28,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:19:28,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724253990] [2024-11-10 10:19:28,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:19:28,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:19:28,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:19:28,283 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 10:19:28,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:19:28,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724253990] [2024-11-10 10:19:28,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [724253990] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:19:28,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:19:28,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-10 10:19:28,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954940515] [2024-11-10 10:19:28,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:19:28,287 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 10:19:28,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:19:28,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 10:19:28,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-10 10:19:28,292 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 45 [2024-11-10 10:19:28,292 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 53 transitions, 417 flow. Second operand has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 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 10:19:28,292 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:19:28,292 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 45 [2024-11-10 10:19:28,292 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand