./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/popl20-counter-determinism.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6497de01 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53cff8b3-1e04-4d62-ad24-07711a452a64/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53cff8b3-1e04-4d62-ad24-07711a452a64/bin/uautomizer-verify-LYvppIcaGC/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53cff8b3-1e04-4d62-ad24-07711a452a64/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53cff8b3-1e04-4d62-ad24-07711a452a64/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-counter-determinism.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53cff8b3-1e04-4d62-ad24-07711a452a64/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53cff8b3-1e04-4d62-ad24-07711a452a64/bin/uautomizer-verify-LYvppIcaGC --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 981eae178b9cad0bb64b87dda8360f4f1e2e23d7b9d396f9db2ad5a6977098c4 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-23 23:39:09,309 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-23 23:39:09,430 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53cff8b3-1e04-4d62-ad24-07711a452a64/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-23 23:39:09,437 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-23 23:39:09,438 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-23 23:39:09,466 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-23 23:39:09,467 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-23 23:39:09,467 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-23 23:39:09,469 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-23 23:39:09,469 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-23 23:39:09,469 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-23 23:39:09,469 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-23 23:39:09,470 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-23 23:39:09,471 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-23 23:39:09,471 INFO L153 SettingsManager]: * Use SBE=true [2024-11-23 23:39:09,472 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-23 23:39:09,473 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-23 23:39:09,473 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-23 23:39:09,473 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-23 23:39:09,473 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-23 23:39:09,473 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-23 23:39:09,473 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-23 23:39:09,473 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-23 23:39:09,474 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-23 23:39:09,474 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-23 23:39:09,474 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-23 23:39:09,474 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-23 23:39:09,475 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-23 23:39:09,475 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-23 23:39:09,475 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 23:39:09,475 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 23:39:09,475 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 23:39:09,475 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 23:39:09,476 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-23 23:39:09,476 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 23:39:09,477 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 23:39:09,477 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 23:39:09,477 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 23:39:09,477 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-23 23:39:09,477 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-23 23:39:09,477 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-23 23:39:09,477 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-23 23:39:09,478 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-23 23:39:09,478 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-23 23:39:09,478 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-23 23:39:09,478 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-23 23:39:09,478 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-23 23:39:09,478 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-23 23:39:09,478 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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 -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53cff8b3-1e04-4d62-ad24-07711a452a64/bin/uautomizer-verify-LYvppIcaGC 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 -> 981eae178b9cad0bb64b87dda8360f4f1e2e23d7b9d396f9db2ad5a6977098c4 [2024-11-23 23:39:09,837 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-23 23:39:09,847 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-23 23:39:09,850 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-23 23:39:09,852 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-23 23:39:09,852 INFO L274 PluginConnector]: CDTParser initialized [2024-11-23 23:39:09,854 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53cff8b3-1e04-4d62-ad24-07711a452a64/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/weaver/popl20-counter-determinism.wvr.c [2024-11-23 23:39:13,067 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53cff8b3-1e04-4d62-ad24-07711a452a64/bin/uautomizer-verify-LYvppIcaGC/data/08fc93e63/489ec4493f60400097b6fd653eaf94b8/FLAG2e081715b [2024-11-23 23:39:13,447 INFO L384 CDTParser]: Found 1 translation units. [2024-11-23 23:39:13,448 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53cff8b3-1e04-4d62-ad24-07711a452a64/sv-benchmarks/c/weaver/popl20-counter-determinism.wvr.c [2024-11-23 23:39:13,458 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53cff8b3-1e04-4d62-ad24-07711a452a64/bin/uautomizer-verify-LYvppIcaGC/data/08fc93e63/489ec4493f60400097b6fd653eaf94b8/FLAG2e081715b [2024-11-23 23:39:13,483 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53cff8b3-1e04-4d62-ad24-07711a452a64/bin/uautomizer-verify-LYvppIcaGC/data/08fc93e63/489ec4493f60400097b6fd653eaf94b8 [2024-11-23 23:39:13,486 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-23 23:39:13,488 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-23 23:39:13,490 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-23 23:39:13,490 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-23 23:39:13,496 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-23 23:39:13,497 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:39:13" (1/1) ... [2024-11-23 23:39:13,500 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ce8ff1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:39:13, skipping insertion in model container [2024-11-23 23:39:13,500 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:39:13" (1/1) ... [2024-11-23 23:39:13,524 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-23 23:39:13,795 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53cff8b3-1e04-4d62-ad24-07711a452a64/sv-benchmarks/c/weaver/popl20-counter-determinism.wvr.c[2218,2231] [2024-11-23 23:39:13,803 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 23:39:13,816 INFO L200 MainTranslator]: Completed pre-run [2024-11-23 23:39:13,858 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53cff8b3-1e04-4d62-ad24-07711a452a64/sv-benchmarks/c/weaver/popl20-counter-determinism.wvr.c[2218,2231] [2024-11-23 23:39:13,859 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 23:39:13,882 INFO L204 MainTranslator]: Completed translation [2024-11-23 23:39:13,883 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:39:13 WrapperNode [2024-11-23 23:39:13,884 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-23 23:39:13,886 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-23 23:39:13,886 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-23 23:39:13,887 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-23 23:39:13,903 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:39:13" (1/1) ... [2024-11-23 23:39:13,913 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:39:13" (1/1) ... [2024-11-23 23:39:13,944 INFO L138 Inliner]: procedures = 20, calls = 13, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 92 [2024-11-23 23:39:13,945 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-23 23:39:13,946 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-23 23:39:13,946 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-23 23:39:13,946 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-23 23:39:13,959 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:39:13" (1/1) ... [2024-11-23 23:39:13,959 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:39:13" (1/1) ... [2024-11-23 23:39:13,961 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:39:13" (1/1) ... [2024-11-23 23:39:13,987 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]. [2024-11-23 23:39:13,988 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:39:13" (1/1) ... [2024-11-23 23:39:13,988 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:39:13" (1/1) ... [2024-11-23 23:39:13,997 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:39:13" (1/1) ... [2024-11-23 23:39:14,002 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:39:13" (1/1) ... [2024-11-23 23:39:14,009 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:39:13" (1/1) ... [2024-11-23 23:39:14,014 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:39:13" (1/1) ... [2024-11-23 23:39:14,015 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:39:13" (1/1) ... [2024-11-23 23:39:14,020 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-23 23:39:14,023 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-23 23:39:14,024 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-23 23:39:14,024 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-23 23:39:14,025 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:39:13" (1/1) ... [2024-11-23 23:39:14,033 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 23:39:14,050 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53cff8b3-1e04-4d62-ad24-07711a452a64/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:39:14,068 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53cff8b3-1e04-4d62-ad24-07711a452a64/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-23 23:39:14,074 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53cff8b3-1e04-4d62-ad24-07711a452a64/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-23 23:39:14,109 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-23 23:39:14,109 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-23 23:39:14,110 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-23 23:39:14,110 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-23 23:39:14,110 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-23 23:39:14,110 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-23 23:39:14,110 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-23 23:39:14,110 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-11-23 23:39:14,110 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-11-23 23:39:14,110 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-23 23:39:14,110 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-23 23:39:14,110 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-23 23:39:14,112 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-23 23:39:14,265 INFO L234 CfgBuilder]: Building ICFG [2024-11-23 23:39:14,269 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-23 23:39:14,630 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-23 23:39:14,633 INFO L283 CfgBuilder]: Performing block encoding [2024-11-23 23:39:14,792 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-23 23:39:14,792 INFO L312 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-23 23:39:14,793 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:39:14 BoogieIcfgContainer [2024-11-23 23:39:14,793 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-23 23:39:14,796 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-23 23:39:14,796 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-23 23:39:14,803 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-23 23:39:14,803 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 11:39:13" (1/3) ... [2024-11-23 23:39:14,804 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4484aab5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:39:14, skipping insertion in model container [2024-11-23 23:39:14,804 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:39:13" (2/3) ... [2024-11-23 23:39:14,805 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4484aab5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:39:14, skipping insertion in model container [2024-11-23 23:39:14,805 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:39:14" (3/3) ... [2024-11-23 23:39:14,810 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-counter-determinism.wvr.c [2024-11-23 23:39:14,828 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-23 23:39:14,830 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-counter-determinism.wvr.c that has 5 procedures, 37 locations, 1 initial locations, 4 loop locations, and 1 error locations. [2024-11-23 23:39:14,831 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-23 23:39:14,914 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-11-23 23:39:14,954 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 49 places, 40 transitions, 108 flow [2024-11-23 23:39:14,997 INFO L124 PetriNetUnfolderBase]: 4/36 cut-off events. [2024-11-23 23:39:15,000 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-23 23:39:15,004 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53 conditions, 36 events. 4/36 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 49 event pairs, 0 based on Foata normal form. 0/31 useless extension candidates. Maximal degree in co-relation 33. Up to 2 conditions per place. [2024-11-23 23:39:15,004 INFO L82 GeneralOperation]: Start removeDead. Operand has 49 places, 40 transitions, 108 flow [2024-11-23 23:39:15,008 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 44 places, 35 transitions, 94 flow [2024-11-23 23:39:15,018 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-23 23:39:15,032 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;@71ce3f93, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-23 23:39:15,032 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-11-23 23:39:15,052 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-23 23:39:15,052 INFO L124 PetriNetUnfolderBase]: 4/34 cut-off events. [2024-11-23 23:39:15,052 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-23 23:39:15,052 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 23:39:15,053 INFO L206 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] [2024-11-23 23:39:15,054 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)] === [2024-11-23 23:39:15,060 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:39:15,060 INFO L85 PathProgramCache]: Analyzing trace with hash 1827282326, now seen corresponding path program 1 times [2024-11-23 23:39:15,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:39:15,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890887972] [2024-11-23 23:39:15,070 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:39:15,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:39:15,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:39:15,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:39:15,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:39:15,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890887972] [2024-11-23 23:39:15,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890887972] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:39:15,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:39:15,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-23 23:39:15,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280808637] [2024-11-23 23:39:15,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:39:15,463 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:39:15,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:39:15,502 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:39:15,503 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:39:15,508 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-11-23 23:39:15,512 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 35 transitions, 94 flow. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 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) [2024-11-23 23:39:15,512 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 23:39:15,513 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-11-23 23:39:15,514 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 23:39:16,763 INFO L124 PetriNetUnfolderBase]: 5145/6905 cut-off events. [2024-11-23 23:39:16,763 INFO L125 PetriNetUnfolderBase]: For 518/518 co-relation queries the response was YES. [2024-11-23 23:39:16,787 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14136 conditions, 6905 events. 5145/6905 cut-off events. For 518/518 co-relation queries the response was YES. Maximal size of possible extension queue 333. Compared 30802 event pairs, 1020 based on Foata normal form. 1/6292 useless extension candidates. Maximal degree in co-relation 12514. Up to 5288 conditions per place. [2024-11-23 23:39:16,831 INFO L140 encePairwiseOnDemand]: 34/40 looper letters, 51 selfloop transitions, 5 changer transitions 1/60 dead transitions. [2024-11-23 23:39:16,831 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 60 transitions, 279 flow [2024-11-23 23:39:16,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:39:16,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-23 23:39:16,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 79 transitions. [2024-11-23 23:39:16,848 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6583333333333333 [2024-11-23 23:39:16,850 INFO L175 Difference]: Start difference. First operand has 44 places, 35 transitions, 94 flow. Second operand 3 states and 79 transitions. [2024-11-23 23:39:16,851 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 60 transitions, 279 flow [2024-11-23 23:39:16,879 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 60 transitions, 249 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-11-23 23:39:16,885 INFO L231 Difference]: Finished difference. Result has 39 places, 39 transitions, 111 flow [2024-11-23 23:39:16,889 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=111, PETRI_PLACES=39, PETRI_TRANSITIONS=39} [2024-11-23 23:39:16,894 INFO L279 CegarLoopForPetriNet]: 44 programPoint places, -5 predicate places. [2024-11-23 23:39:16,896 INFO L471 AbstractCegarLoop]: Abstraction has has 39 places, 39 transitions, 111 flow [2024-11-23 23:39:16,896 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 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) [2024-11-23 23:39:16,896 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 23:39:16,897 INFO L206 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] [2024-11-23 23:39:16,898 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-23 23:39:16,898 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)] === [2024-11-23 23:39:16,900 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:39:16,902 INFO L85 PathProgramCache]: Analyzing trace with hash 235444304, now seen corresponding path program 1 times [2024-11-23 23:39:16,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:39:16,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932501208] [2024-11-23 23:39:16,903 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:39:16,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:39:16,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:39:17,183 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:39:17,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:39:17,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932501208] [2024-11-23 23:39:17,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1932501208] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:39:17,185 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:39:17,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 23:39:17,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501461410] [2024-11-23 23:39:17,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:39:17,187 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 23:39:17,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:39:17,189 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 23:39:17,189 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-23 23:39:17,198 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 40 [2024-11-23 23:39:17,199 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 39 transitions, 111 flow. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 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) [2024-11-23 23:39:17,199 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 23:39:17,199 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 40 [2024-11-23 23:39:17,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 23:39:19,211 INFO L124 PetriNetUnfolderBase]: 11897/15399 cut-off events. [2024-11-23 23:39:19,212 INFO L125 PetriNetUnfolderBase]: For 1988/1988 co-relation queries the response was YES. [2024-11-23 23:39:19,245 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35070 conditions, 15399 events. 11897/15399 cut-off events. For 1988/1988 co-relation queries the response was YES. Maximal size of possible extension queue 635. Compared 73081 event pairs, 3639 based on Foata normal form. 0/13185 useless extension candidates. Maximal degree in co-relation 5552. Up to 7867 conditions per place. [2024-11-23 23:39:19,452 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 101 selfloop transitions, 10 changer transitions 0/113 dead transitions. [2024-11-23 23:39:19,452 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 113 transitions, 540 flow [2024-11-23 23:39:19,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 23:39:19,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-23 23:39:19,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 128 transitions. [2024-11-23 23:39:19,454 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.64 [2024-11-23 23:39:19,454 INFO L175 Difference]: Start difference. First operand has 39 places, 39 transitions, 111 flow. Second operand 5 states and 128 transitions. [2024-11-23 23:39:19,454 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 113 transitions, 540 flow [2024-11-23 23:39:19,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 113 transitions, 525 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-23 23:39:19,462 INFO L231 Difference]: Finished difference. Result has 45 places, 48 transitions, 169 flow [2024-11-23 23:39:19,463 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=169, PETRI_PLACES=45, PETRI_TRANSITIONS=48} [2024-11-23 23:39:19,464 INFO L279 CegarLoopForPetriNet]: 44 programPoint places, 1 predicate places. [2024-11-23 23:39:19,464 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 48 transitions, 169 flow [2024-11-23 23:39:19,465 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 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) [2024-11-23 23:39:19,465 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 23:39:19,465 INFO L206 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] [2024-11-23 23:39:19,466 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-23 23:39:19,466 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)] === [2024-11-23 23:39:19,467 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:39:19,467 INFO L85 PathProgramCache]: Analyzing trace with hash 670967522, now seen corresponding path program 2 times [2024-11-23 23:39:19,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:39:19,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157319478] [2024-11-23 23:39:19,469 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-23 23:39:19,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:39:19,530 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-23 23:39:19,530 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 23:39:19,709 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:39:19,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:39:19,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157319478] [2024-11-23 23:39:19,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157319478] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:39:19,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1448034588] [2024-11-23 23:39:19,710 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-23 23:39:19,710 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:39:19,710 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53cff8b3-1e04-4d62-ad24-07711a452a64/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:39:19,713 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53cff8b3-1e04-4d62-ad24-07711a452a64/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:39:19,717 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53cff8b3-1e04-4d62-ad24-07711a452a64/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-23 23:39:19,828 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-23 23:39:19,828 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 23:39:19,831 INFO L256 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-23 23:39:19,836 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:39:19,929 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:39:19,932 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:39:20,004 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:39:20,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1448034588] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:39:20,005 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 23:39:20,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 9 [2024-11-23 23:39:20,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749463096] [2024-11-23 23:39:20,007 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 23:39:20,007 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-23 23:39:20,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:39:20,009 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-23 23:39:20,010 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-23 23:39:20,035 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 40 [2024-11-23 23:39:20,035 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 48 transitions, 169 flow. Second operand has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 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) [2024-11-23 23:39:20,035 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 23:39:20,035 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 40 [2024-11-23 23:39:20,036 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 23:39:23,012 INFO L124 PetriNetUnfolderBase]: 16200/21115 cut-off events. [2024-11-23 23:39:23,012 INFO L125 PetriNetUnfolderBase]: For 7376/7376 co-relation queries the response was YES. [2024-11-23 23:39:23,067 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54831 conditions, 21115 events. 16200/21115 cut-off events. For 7376/7376 co-relation queries the response was YES. Maximal size of possible extension queue 868. Compared 106761 event pairs, 1313 based on Foata normal form. 346/20629 useless extension candidates. Maximal degree in co-relation 27440. Up to 4494 conditions per place. [2024-11-23 23:39:23,310 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 260 selfloop transitions, 36 changer transitions 0/298 dead transitions. [2024-11-23 23:39:23,311 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 298 transitions, 1478 flow [2024-11-23 23:39:23,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-23 23:39:23,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-23 23:39:23,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 352 transitions. [2024-11-23 23:39:23,318 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6285714285714286 [2024-11-23 23:39:23,319 INFO L175 Difference]: Start difference. First operand has 45 places, 48 transitions, 169 flow. Second operand 14 states and 352 transitions. [2024-11-23 23:39:23,319 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 298 transitions, 1478 flow [2024-11-23 23:39:23,326 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 298 transitions, 1478 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-23 23:39:23,329 INFO L231 Difference]: Finished difference. Result has 64 places, 76 transitions, 405 flow [2024-11-23 23:39:23,329 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=169, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=405, PETRI_PLACES=64, PETRI_TRANSITIONS=76} [2024-11-23 23:39:23,330 INFO L279 CegarLoopForPetriNet]: 44 programPoint places, 20 predicate places. [2024-11-23 23:39:23,330 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 76 transitions, 405 flow [2024-11-23 23:39:23,331 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 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) [2024-11-23 23:39:23,331 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 23:39:23,331 INFO L206 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] [2024-11-23 23:39:23,342 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53cff8b3-1e04-4d62-ad24-07711a452a64/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-23 23:39:23,535 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53cff8b3-1e04-4d62-ad24-07711a452a64/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:39:23,535 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)] === [2024-11-23 23:39:23,537 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:39:23,538 INFO L85 PathProgramCache]: Analyzing trace with hash -1979595508, now seen corresponding path program 3 times [2024-11-23 23:39:23,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:39:23,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321584292] [2024-11-23 23:39:23,539 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-23 23:39:23,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:39:23,579 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-23 23:39:23,579 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 23:39:23,746 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:39:23,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:39:23,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321584292] [2024-11-23 23:39:23,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1321584292] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:39:23,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:39:23,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 23:39:23,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914687049] [2024-11-23 23:39:23,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:39:23,747 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 23:39:23,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:39:23,748 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 23:39:23,748 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-23 23:39:23,755 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 40 [2024-11-23 23:39:23,756 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 76 transitions, 405 flow. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 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) [2024-11-23 23:39:23,756 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 23:39:23,756 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 40 [2024-11-23 23:39:23,756 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 23:39:26,220 INFO L124 PetriNetUnfolderBase]: 22784/29705 cut-off events. [2024-11-23 23:39:26,220 INFO L125 PetriNetUnfolderBase]: For 35211/35211 co-relation queries the response was YES. [2024-11-23 23:39:26,299 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91113 conditions, 29705 events. 22784/29705 cut-off events. For 35211/35211 co-relation queries the response was YES. Maximal size of possible extension queue 1090. Compared 152376 event pairs, 5881 based on Foata normal form. 76/28601 useless extension candidates. Maximal degree in co-relation 82562. Up to 14037 conditions per place. [2024-11-23 23:39:26,461 INFO L140 encePairwiseOnDemand]: 34/40 looper letters, 145 selfloop transitions, 19 changer transitions 0/166 dead transitions. [2024-11-23 23:39:26,462 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 166 transitions, 1106 flow [2024-11-23 23:39:26,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 23:39:26,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-23 23:39:26,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 127 transitions. [2024-11-23 23:39:26,464 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.635 [2024-11-23 23:39:26,464 INFO L175 Difference]: Start difference. First operand has 64 places, 76 transitions, 405 flow. Second operand 5 states and 127 transitions. [2024-11-23 23:39:26,464 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 166 transitions, 1106 flow [2024-11-23 23:39:27,081 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 166 transitions, 1059 flow, removed 13 selfloop flow, removed 1 redundant places. [2024-11-23 23:39:27,084 INFO L231 Difference]: Finished difference. Result has 70 places, 84 transitions, 504 flow [2024-11-23 23:39:27,085 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=376, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=504, PETRI_PLACES=70, PETRI_TRANSITIONS=84} [2024-11-23 23:39:27,086 INFO L279 CegarLoopForPetriNet]: 44 programPoint places, 26 predicate places. [2024-11-23 23:39:27,086 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 84 transitions, 504 flow [2024-11-23 23:39:27,086 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 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) [2024-11-23 23:39:27,086 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 23:39:27,087 INFO L206 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] [2024-11-23 23:39:27,087 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-23 23:39:27,087 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)] === [2024-11-23 23:39:27,088 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:39:27,088 INFO L85 PathProgramCache]: Analyzing trace with hash 2055316404, now seen corresponding path program 1 times [2024-11-23 23:39:27,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:39:27,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561200063] [2024-11-23 23:39:27,088 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:39:27,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:39:27,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:39:27,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:39:27,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:39:27,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561200063] [2024-11-23 23:39:27,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [561200063] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:39:27,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:39:27,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 23:39:27,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358504254] [2024-11-23 23:39:27,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:39:27,225 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 23:39:27,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:39:27,226 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 23:39:27,226 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-23 23:39:27,237 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 40 [2024-11-23 23:39:27,237 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 84 transitions, 504 flow. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 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) [2024-11-23 23:39:27,237 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 23:39:27,237 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 40 [2024-11-23 23:39:27,238 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 23:39:29,830 INFO L124 PetriNetUnfolderBase]: 25215/33212 cut-off events. [2024-11-23 23:39:29,830 INFO L125 PetriNetUnfolderBase]: For 51295/51437 co-relation queries the response was YES. [2024-11-23 23:39:29,918 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104167 conditions, 33212 events. 25215/33212 cut-off events. For 51295/51437 co-relation queries the response was YES. Maximal size of possible extension queue 1153. Compared 176255 event pairs, 7139 based on Foata normal form. 0/30401 useless extension candidates. Maximal degree in co-relation 92610. Up to 14514 conditions per place. [2024-11-23 23:39:30,084 INFO L140 encePairwiseOnDemand]: 34/40 looper letters, 139 selfloop transitions, 17 changer transitions 0/160 dead transitions. [2024-11-23 23:39:30,085 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 160 transitions, 1103 flow [2024-11-23 23:39:30,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 23:39:30,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-23 23:39:30,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 132 transitions. [2024-11-23 23:39:30,086 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.66 [2024-11-23 23:39:30,087 INFO L175 Difference]: Start difference. First operand has 70 places, 84 transitions, 504 flow. Second operand 5 states and 132 transitions. [2024-11-23 23:39:30,087 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 160 transitions, 1103 flow [2024-11-23 23:39:30,747 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 160 transitions, 1056 flow, removed 14 selfloop flow, removed 1 redundant places. [2024-11-23 23:39:30,749 INFO L231 Difference]: Finished difference. Result has 75 places, 86 transitions, 533 flow [2024-11-23 23:39:30,749 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=479, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=533, PETRI_PLACES=75, PETRI_TRANSITIONS=86} [2024-11-23 23:39:30,750 INFO L279 CegarLoopForPetriNet]: 44 programPoint places, 31 predicate places. [2024-11-23 23:39:30,750 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 86 transitions, 533 flow [2024-11-23 23:39:30,751 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 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) [2024-11-23 23:39:30,751 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 23:39:30,751 INFO L206 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] [2024-11-23 23:39:30,751 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-23 23:39:30,751 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)] === [2024-11-23 23:39:30,752 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:39:30,752 INFO L85 PathProgramCache]: Analyzing trace with hash 162288434, now seen corresponding path program 4 times [2024-11-23 23:39:30,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:39:30,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029411518] [2024-11-23 23:39:30,753 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-23 23:39:30,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:39:30,768 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-23 23:39:30,769 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 23:39:30,822 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:39:30,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:39:30,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029411518] [2024-11-23 23:39:30,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1029411518] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:39:30,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [261872182] [2024-11-23 23:39:30,823 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-23 23:39:30,823 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:39:30,823 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53cff8b3-1e04-4d62-ad24-07711a452a64/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:39:30,825 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53cff8b3-1e04-4d62-ad24-07711a452a64/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:39:30,829 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53cff8b3-1e04-4d62-ad24-07711a452a64/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-23 23:39:30,913 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-23 23:39:30,913 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 23:39:30,916 INFO L256 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-23 23:39:30,917 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:39:30,990 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:39:30,990 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:39:31,027 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:39:31,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [261872182] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:39:31,028 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 23:39:31,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 7 [2024-11-23 23:39:31,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669517691] [2024-11-23 23:39:31,028 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 23:39:31,029 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-23 23:39:31,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:39:31,029 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-23 23:39:31,030 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-23 23:39:31,042 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 40 [2024-11-23 23:39:31,043 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 86 transitions, 533 flow. Second operand has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 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) [2024-11-23 23:39:31,043 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 23:39:31,043 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 40 [2024-11-23 23:39:31,043 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 23:39:33,944 INFO L124 PetriNetUnfolderBase]: 25372/33235 cut-off events. [2024-11-23 23:39:33,944 INFO L125 PetriNetUnfolderBase]: For 61228/62915 co-relation queries the response was YES. [2024-11-23 23:39:34,045 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107726 conditions, 33235 events. 25372/33235 cut-off events. For 61228/62915 co-relation queries the response was YES. Maximal size of possible extension queue 1237. Compared 173867 event pairs, 5984 based on Foata normal form. 346/32242 useless extension candidates. Maximal degree in co-relation 95863. Up to 11795 conditions per place. [2024-11-23 23:39:34,161 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 204 selfloop transitions, 47 changer transitions 0/253 dead transitions. [2024-11-23 23:39:34,161 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 253 transitions, 1687 flow [2024-11-23 23:39:34,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-23 23:39:34,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-23 23:39:34,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 228 transitions. [2024-11-23 23:39:34,163 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6333333333333333 [2024-11-23 23:39:34,163 INFO L175 Difference]: Start difference. First operand has 75 places, 86 transitions, 533 flow. Second operand 9 states and 228 transitions. [2024-11-23 23:39:34,163 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 253 transitions, 1687 flow [2024-11-23 23:39:34,616 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 253 transitions, 1651 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-23 23:39:34,619 INFO L231 Difference]: Finished difference. Result has 86 places, 106 transitions, 805 flow [2024-11-23 23:39:34,619 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=509, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=805, PETRI_PLACES=86, PETRI_TRANSITIONS=106} [2024-11-23 23:39:34,620 INFO L279 CegarLoopForPetriNet]: 44 programPoint places, 42 predicate places. [2024-11-23 23:39:34,620 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 106 transitions, 805 flow [2024-11-23 23:39:34,620 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 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) [2024-11-23 23:39:34,620 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 23:39:34,620 INFO L206 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] [2024-11-23 23:39:34,627 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53cff8b3-1e04-4d62-ad24-07711a452a64/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-23 23:39:34,821 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53cff8b3-1e04-4d62-ad24-07711a452a64/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:39:34,821 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)] === [2024-11-23 23:39:34,822 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:39:34,822 INFO L85 PathProgramCache]: Analyzing trace with hash 2103761888, now seen corresponding path program 2 times [2024-11-23 23:39:34,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:39:34,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081320659] [2024-11-23 23:39:34,822 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-23 23:39:34,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:39:34,840 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-23 23:39:34,840 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 23:39:34,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:39:34,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:39:34,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081320659] [2024-11-23 23:39:34,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081320659] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:39:34,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:39:34,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 23:39:34,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795479833] [2024-11-23 23:39:34,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:39:34,947 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 23:39:34,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:39:34,948 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 23:39:34,948 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-23 23:39:34,956 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 40 [2024-11-23 23:39:34,956 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 106 transitions, 805 flow. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 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) [2024-11-23 23:39:34,957 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 23:39:34,957 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 40 [2024-11-23 23:39:34,957 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 23:39:39,563 INFO L124 PetriNetUnfolderBase]: 40247/52166 cut-off events. [2024-11-23 23:39:39,563 INFO L125 PetriNetUnfolderBase]: For 124117/124117 co-relation queries the response was YES. [2024-11-23 23:39:39,719 INFO L83 FinitePrefix]: Finished finitePrefix Result has 185563 conditions, 52166 events. 40247/52166 cut-off events. For 124117/124117 co-relation queries the response was YES. Maximal size of possible extension queue 1677. Compared 276404 event pairs, 12892 based on Foata normal form. 384/47925 useless extension candidates. Maximal degree in co-relation 166809. Up to 27927 conditions per place. [2024-11-23 23:39:39,851 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 179 selfloop transitions, 47 changer transitions 0/227 dead transitions. [2024-11-23 23:39:39,851 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 227 transitions, 2105 flow [2024-11-23 23:39:39,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 23:39:39,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-23 23:39:39,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 125 transitions. [2024-11-23 23:39:39,852 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.625 [2024-11-23 23:39:39,852 INFO L175 Difference]: Start difference. First operand has 86 places, 106 transitions, 805 flow. Second operand 5 states and 125 transitions. [2024-11-23 23:39:39,852 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 227 transitions, 2105 flow [2024-11-23 23:39:41,564 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 227 transitions, 2001 flow, removed 33 selfloop flow, removed 1 redundant places. [2024-11-23 23:39:41,569 INFO L231 Difference]: Finished difference. Result has 92 places, 134 transitions, 1159 flow [2024-11-23 23:39:41,570 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=757, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1159, PETRI_PLACES=92, PETRI_TRANSITIONS=134} [2024-11-23 23:39:41,574 INFO L279 CegarLoopForPetriNet]: 44 programPoint places, 48 predicate places. [2024-11-23 23:39:41,574 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 134 transitions, 1159 flow [2024-11-23 23:39:41,574 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 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) [2024-11-23 23:39:41,574 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 23:39:41,574 INFO L206 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] [2024-11-23 23:39:41,575 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-23 23:39:41,580 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)] === [2024-11-23 23:39:41,581 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:39:41,581 INFO L85 PathProgramCache]: Analyzing trace with hash 1959777568, now seen corresponding path program 3 times [2024-11-23 23:39:41,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:39:41,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247946788] [2024-11-23 23:39:41,581 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-23 23:39:41,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:39:41,623 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-23 23:39:41,624 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 23:39:41,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:39:41,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:39:41,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247946788] [2024-11-23 23:39:41,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247946788] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:39:41,788 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:39:41,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 23:39:41,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870709953] [2024-11-23 23:39:41,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:39:41,788 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 23:39:41,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:39:41,789 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 23:39:41,789 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-23 23:39:41,796 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 40 [2024-11-23 23:39:41,797 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 134 transitions, 1159 flow. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 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) [2024-11-23 23:39:41,798 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 23:39:41,798 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 40 [2024-11-23 23:39:41,798 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 23:39:47,877 INFO L124 PetriNetUnfolderBase]: 52204/67874 cut-off events. [2024-11-23 23:39:47,877 INFO L125 PetriNetUnfolderBase]: For 195236/195697 co-relation queries the response was YES. [2024-11-23 23:39:48,120 INFO L83 FinitePrefix]: Finished finitePrefix Result has 262191 conditions, 67874 events. 52204/67874 cut-off events. For 195236/195697 co-relation queries the response was YES. Maximal size of possible extension queue 2171. Compared 373554 event pairs, 15616 based on Foata normal form. 336/65229 useless extension candidates. Maximal degree in co-relation 237900. Up to 36591 conditions per place. [2024-11-23 23:39:48,385 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 241 selfloop transitions, 31 changer transitions 0/282 dead transitions. [2024-11-23 23:39:48,385 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 282 transitions, 2787 flow [2024-11-23 23:39:48,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 23:39:48,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-23 23:39:48,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 125 transitions. [2024-11-23 23:39:48,387 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.625 [2024-11-23 23:39:48,387 INFO L175 Difference]: Start difference. First operand has 92 places, 134 transitions, 1159 flow. Second operand 5 states and 125 transitions. [2024-11-23 23:39:48,387 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 282 transitions, 2787 flow [2024-11-23 23:39:52,603 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 282 transitions, 2723 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-11-23 23:39:52,607 INFO L231 Difference]: Finished difference. Result has 98 places, 159 transitions, 1535 flow [2024-11-23 23:39:52,607 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1114, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1535, PETRI_PLACES=98, PETRI_TRANSITIONS=159} [2024-11-23 23:39:52,608 INFO L279 CegarLoopForPetriNet]: 44 programPoint places, 54 predicate places. [2024-11-23 23:39:52,608 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 159 transitions, 1535 flow [2024-11-23 23:39:52,608 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 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) [2024-11-23 23:39:52,608 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 23:39:52,608 INFO L206 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] [2024-11-23 23:39:52,608 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-23 23:39:52,609 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-23 23:39:52,609 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:39:52,609 INFO L85 PathProgramCache]: Analyzing trace with hash -442280838, now seen corresponding path program 5 times [2024-11-23 23:39:52,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:39:52,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949390981] [2024-11-23 23:39:52,609 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-23 23:39:52,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:39:52,626 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-23 23:39:52,626 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 23:39:52,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:39:52,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:39:52,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949390981] [2024-11-23 23:39:52,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949390981] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:39:52,746 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:39:52,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-23 23:39:52,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233793511] [2024-11-23 23:39:52,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:39:52,746 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-23 23:39:52,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:39:52,747 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-23 23:39:52,747 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-23 23:39:52,761 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 40 [2024-11-23 23:39:52,761 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 159 transitions, 1535 flow. Second operand has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 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) [2024-11-23 23:39:52,761 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 23:39:52,761 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 40 [2024-11-23 23:39:52,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 23:39:59,591 INFO L124 PetriNetUnfolderBase]: 52267/68398 cut-off events. [2024-11-23 23:39:59,591 INFO L125 PetriNetUnfolderBase]: For 226645/232186 co-relation queries the response was YES. [2024-11-23 23:39:59,837 INFO L83 FinitePrefix]: Finished finitePrefix Result has 273261 conditions, 68398 events. 52267/68398 cut-off events. For 226645/232186 co-relation queries the response was YES. Maximal size of possible extension queue 2314. Compared 389086 event pairs, 16489 based on Foata normal form. 1205/66409 useless extension candidates. Maximal degree in co-relation 253004. Up to 34541 conditions per place. [2024-11-23 23:40:00,147 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 181 selfloop transitions, 69 changer transitions 0/253 dead transitions. [2024-11-23 23:40:00,147 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 253 transitions, 2474 flow [2024-11-23 23:40:00,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-23 23:40:00,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-23 23:40:00,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 159 transitions. [2024-11-23 23:40:00,149 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6625 [2024-11-23 23:40:00,149 INFO L175 Difference]: Start difference. First operand has 98 places, 159 transitions, 1535 flow. Second operand 6 states and 159 transitions. [2024-11-23 23:40:00,149 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 253 transitions, 2474 flow [2024-11-23 23:40:03,859 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 253 transitions, 2430 flow, removed 22 selfloop flow, removed 0 redundant places. [2024-11-23 23:40:03,862 INFO L231 Difference]: Finished difference. Result has 105 places, 160 transitions, 1705 flow [2024-11-23 23:40:03,863 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1429, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1705, PETRI_PLACES=105, PETRI_TRANSITIONS=160} [2024-11-23 23:40:03,863 INFO L279 CegarLoopForPetriNet]: 44 programPoint places, 61 predicate places. [2024-11-23 23:40:03,863 INFO L471 AbstractCegarLoop]: Abstraction has has 105 places, 160 transitions, 1705 flow [2024-11-23 23:40:03,864 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 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) [2024-11-23 23:40:03,864 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 23:40:03,864 INFO L206 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] [2024-11-23 23:40:03,864 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-23 23:40:03,864 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-23 23:40:03,865 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:40:03,865 INFO L85 PathProgramCache]: Analyzing trace with hash -603662394, now seen corresponding path program 4 times [2024-11-23 23:40:03,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:40:03,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353084820] [2024-11-23 23:40:03,865 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-23 23:40:03,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:40:03,878 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-23 23:40:03,878 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 23:40:03,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:40:03,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:40:03,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353084820] [2024-11-23 23:40:03,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [353084820] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:40:03,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:40:03,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-23 23:40:03,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584917750] [2024-11-23 23:40:03,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:40:03,930 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 23:40:03,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:40:03,931 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 23:40:03,931 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-23 23:40:03,945 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 40 [2024-11-23 23:40:03,945 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 160 transitions, 1705 flow. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 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) [2024-11-23 23:40:03,945 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 23:40:03,945 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 40 [2024-11-23 23:40:03,946 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 23:40:12,198 INFO L124 PetriNetUnfolderBase]: 62625/81756 cut-off events. [2024-11-23 23:40:12,198 INFO L125 PetriNetUnfolderBase]: For 346912/348096 co-relation queries the response was YES. [2024-11-23 23:40:12,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 331049 conditions, 81756 events. 62625/81756 cut-off events. For 346912/348096 co-relation queries the response was YES. Maximal size of possible extension queue 2725. Compared 467855 event pairs, 4492 based on Foata normal form. 244/78604 useless extension candidates. Maximal degree in co-relation 303695. Up to 25294 conditions per place. [2024-11-23 23:40:12,857 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 743 selfloop transitions, 32 changer transitions 0/787 dead transitions. [2024-11-23 23:40:12,857 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 787 transitions, 9791 flow [2024-11-23 23:40:12,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-23 23:40:12,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-23 23:40:12,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 210 transitions. [2024-11-23 23:40:12,859 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2024-11-23 23:40:12,859 INFO L175 Difference]: Start difference. First operand has 105 places, 160 transitions, 1705 flow. Second operand 9 states and 210 transitions. [2024-11-23 23:40:12,859 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 787 transitions, 9791 flow [2024-11-23 23:40:16,058 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 787 transitions, 9239 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-11-23 23:40:16,066 INFO L231 Difference]: Finished difference. Result has 116 places, 182 transitions, 1823 flow [2024-11-23 23:40:16,066 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=1579, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1823, PETRI_PLACES=116, PETRI_TRANSITIONS=182} [2024-11-23 23:40:16,067 INFO L279 CegarLoopForPetriNet]: 44 programPoint places, 72 predicate places. [2024-11-23 23:40:16,067 INFO L471 AbstractCegarLoop]: Abstraction has has 116 places, 182 transitions, 1823 flow [2024-11-23 23:40:16,067 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 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) [2024-11-23 23:40:16,067 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 23:40:16,067 INFO L206 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] [2024-11-23 23:40:16,067 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-23 23:40:16,068 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-23 23:40:16,068 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:40:16,068 INFO L85 PathProgramCache]: Analyzing trace with hash 1551777105, now seen corresponding path program 1 times [2024-11-23 23:40:16,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 23:40:16,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677629109] [2024-11-23 23:40:16,068 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:40:16,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 23:40:16,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:40:16,157 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:40:16,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 23:40:16,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677629109] [2024-11-23 23:40:16,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1677629109] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:40:16,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:40:16,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-23 23:40:16,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909196709] [2024-11-23 23:40:16,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:40:16,158 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:40:16,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 23:40:16,158 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:40:16,158 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:40:16,159 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-11-23 23:40:16,159 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 182 transitions, 1823 flow. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 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) [2024-11-23 23:40:16,159 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 23:40:16,159 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-11-23 23:40:16,159 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand