./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-deagle/arithmetic_prog_ok.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_465b006d-cbbd-4593-9a06-3cbd6e195f36/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_465b006d-cbbd-4593-9a06-3cbd6e195f36/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_465b006d-cbbd-4593-9a06-3cbd6e195f36/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_465b006d-cbbd-4593-9a06-3cbd6e195f36/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-deagle/arithmetic_prog_ok.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_465b006d-cbbd-4593-9a06-3cbd6e195f36/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_465b006d-cbbd-4593-9a06-3cbd6e195f36/bin/uautomizer-verify-aQ6SnzHsRB --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 29016034e4102bf62d4fcba069301a54da1d77dfd5739e4cf52e395ddaa22e38 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 02:37:31,917 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 02:37:32,020 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_465b006d-cbbd-4593-9a06-3cbd6e195f36/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-28 02:37:32,033 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 02:37:32,034 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 02:37:32,076 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 02:37:32,078 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 02:37:32,078 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 02:37:32,078 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 02:37:32,079 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 02:37:32,079 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 02:37:32,080 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 02:37:32,081 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 02:37:32,081 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 02:37:32,081 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 02:37:32,081 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 02:37:32,081 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 02:37:32,082 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 02:37:32,082 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 02:37:32,082 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 02:37:32,082 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 02:37:32,082 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 02:37:32,082 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 02:37:32,083 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 02:37:32,083 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 02:37:32,083 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 02:37:32,083 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 02:37:32,083 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 02:37:32,083 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 02:37:32,084 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:37:32,084 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:37:32,084 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:37:32,084 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:37:32,085 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 02:37:32,085 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:37:32,085 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:37:32,085 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:37:32,085 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:37:32,086 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 02:37:32,086 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 02:37:32,086 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 02:37:32,086 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 02:37:32,086 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 02:37:32,086 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 02:37:32,086 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 02:37:32,086 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 02:37:32,086 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 02:37:32,086 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 02:37:32,087 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_465b006d-cbbd-4593-9a06-3cbd6e195f36/bin/uautomizer-verify-aQ6SnzHsRB 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 -> 29016034e4102bf62d4fcba069301a54da1d77dfd5739e4cf52e395ddaa22e38 [2024-11-28 02:37:32,438 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 02:37:32,448 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 02:37:32,450 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 02:37:32,451 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 02:37:32,451 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 02:37:32,453 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_465b006d-cbbd-4593-9a06-3cbd6e195f36/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/pthread-deagle/arithmetic_prog_ok.i [2024-11-28 02:37:35,758 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_465b006d-cbbd-4593-9a06-3cbd6e195f36/bin/uautomizer-verify-aQ6SnzHsRB/data/4057a11ee/9b783f8f822f49a5826882e738589715/FLAG1309a62b3 [2024-11-28 02:37:36,257 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 02:37:36,258 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_465b006d-cbbd-4593-9a06-3cbd6e195f36/sv-benchmarks/c/pthread-deagle/arithmetic_prog_ok.i [2024-11-28 02:37:36,274 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_465b006d-cbbd-4593-9a06-3cbd6e195f36/bin/uautomizer-verify-aQ6SnzHsRB/data/4057a11ee/9b783f8f822f49a5826882e738589715/FLAG1309a62b3 [2024-11-28 02:37:36,289 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_465b006d-cbbd-4593-9a06-3cbd6e195f36/bin/uautomizer-verify-aQ6SnzHsRB/data/4057a11ee/9b783f8f822f49a5826882e738589715 [2024-11-28 02:37:36,293 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 02:37:36,294 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 02:37:36,297 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 02:37:36,297 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 02:37:36,303 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 02:37:36,306 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:37:36" (1/1) ... [2024-11-28 02:37:36,307 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74c7ebb5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:37:36, skipping insertion in model container [2024-11-28 02:37:36,308 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:37:36" (1/1) ... [2024-11-28 02:37:36,344 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 02:37:37,001 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_465b006d-cbbd-4593-9a06-3cbd6e195f36/sv-benchmarks/c/pthread-deagle/arithmetic_prog_ok.i[39757,39770] [2024-11-28 02:37:37,005 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:37:37,052 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 02:37:37,140 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_465b006d-cbbd-4593-9a06-3cbd6e195f36/sv-benchmarks/c/pthread-deagle/arithmetic_prog_ok.i[39757,39770] [2024-11-28 02:37:37,141 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:37:37,203 INFO L204 MainTranslator]: Completed translation [2024-11-28 02:37:37,204 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:37:37 WrapperNode [2024-11-28 02:37:37,204 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 02:37:37,205 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 02:37:37,205 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 02:37:37,206 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 02:37:37,213 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:37:37" (1/1) ... [2024-11-28 02:37:37,243 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:37:37" (1/1) ... [2024-11-28 02:37:37,274 INFO L138 Inliner]: procedures = 243, calls = 26, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 260 [2024-11-28 02:37:37,274 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 02:37:37,275 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 02:37:37,275 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 02:37:37,275 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 02:37:37,283 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:37:37" (1/1) ... [2024-11-28 02:37:37,283 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:37:37" (1/1) ... [2024-11-28 02:37:37,288 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:37:37" (1/1) ... [2024-11-28 02:37:37,305 INFO L175 MemorySlicer]: Split 11 memory accesses to 3 slices as follows [2, 1, 8]. 73 percent of accesses are in the largest equivalence class. The 11 initializations are split as follows [2, 1, 8]. The 0 writes are split as follows [0, 0, 0]. [2024-11-28 02:37:37,305 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:37:37" (1/1) ... [2024-11-28 02:37:37,305 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:37:37" (1/1) ... [2024-11-28 02:37:37,316 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:37:37" (1/1) ... [2024-11-28 02:37:37,318 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:37:37" (1/1) ... [2024-11-28 02:37:37,324 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:37:37" (1/1) ... [2024-11-28 02:37:37,331 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:37:37" (1/1) ... [2024-11-28 02:37:37,333 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:37:37" (1/1) ... [2024-11-28 02:37:37,340 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 02:37:37,345 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 02:37:37,345 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 02:37:37,345 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 02:37:37,347 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:37:37" (1/1) ... [2024-11-28 02:37:37,353 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:37:37,369 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_465b006d-cbbd-4593-9a06-3cbd6e195f36/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:37:37,386 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_465b006d-cbbd-4593-9a06-3cbd6e195f36/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 02:37:37,389 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_465b006d-cbbd-4593-9a06-3cbd6e195f36/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 02:37:37,419 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-28 02:37:37,419 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-28 02:37:37,420 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-28 02:37:37,420 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-28 02:37:37,420 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-28 02:37:37,420 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-28 02:37:37,420 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-28 02:37:37,420 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-28 02:37:37,420 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-28 02:37:37,420 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 02:37:37,420 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 02:37:37,420 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-28 02:37:37,420 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-28 02:37:37,421 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 02:37:37,421 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 02:37:37,423 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-28 02:37:37,621 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 02:37:37,623 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 02:37:38,080 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-28 02:37:38,080 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 02:37:39,440 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 02:37:39,440 INFO L312 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-28 02:37:39,440 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:37:39 BoogieIcfgContainer [2024-11-28 02:37:39,441 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 02:37:39,444 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 02:37:39,444 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 02:37:39,452 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 02:37:39,453 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 02:37:36" (1/3) ... [2024-11-28 02:37:39,453 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@160ff3e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:37:39, skipping insertion in model container [2024-11-28 02:37:39,453 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:37:37" (2/3) ... [2024-11-28 02:37:39,454 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@160ff3e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:37:39, skipping insertion in model container [2024-11-28 02:37:39,454 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:37:39" (3/3) ... [2024-11-28 02:37:39,455 INFO L128 eAbstractionObserver]: Analyzing ICFG arithmetic_prog_ok.i [2024-11-28 02:37:39,512 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 02:37:39,514 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG arithmetic_prog_ok.i that has 3 procedures, 33 locations, 1 initial locations, 4 loop locations, and 1 error locations. [2024-11-28 02:37:39,514 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-28 02:37:39,595 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-28 02:37:39,639 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 39 places, 38 transitions, 90 flow [2024-11-28 02:37:39,704 INFO L124 PetriNetUnfolderBase]: 6/36 cut-off events. [2024-11-28 02:37:39,707 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-28 02:37:39,710 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45 conditions, 36 events. 6/36 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 64 event pairs, 0 based on Foata normal form. 0/29 useless extension candidates. Maximal degree in co-relation 27. Up to 3 conditions per place. [2024-11-28 02:37:39,712 INFO L82 GeneralOperation]: Start removeDead. Operand has 39 places, 38 transitions, 90 flow [2024-11-28 02:37:39,715 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 35 places, 32 transitions, 76 flow [2024-11-28 02:37:39,735 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 02:37:39,754 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;@407462cf, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 02:37:39,755 INFO L334 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-11-28 02:37:39,797 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-28 02:37:39,798 INFO L124 PetriNetUnfolderBase]: 4/31 cut-off events. [2024-11-28 02:37:39,798 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-28 02:37:39,798 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:37:39,799 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:37:39,800 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 02:37:39,806 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:37:39,807 INFO L85 PathProgramCache]: Analyzing trace with hash -649924439, now seen corresponding path program 1 times [2024-11-28 02:37:39,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:37:39,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763727337] [2024-11-28 02:37:39,816 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:37:39,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:37:40,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:37:41,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:37:41,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:37:41,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763727337] [2024-11-28 02:37:41,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763727337] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:37:41,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:37:41,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:37:41,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874517525] [2024-11-28 02:37:41,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:37:41,170 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:37:41,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:37:41,211 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:37:41,212 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:37:41,225 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 38 [2024-11-28 02:37:41,228 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 32 transitions, 76 flow. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 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) [2024-11-28 02:37:41,229 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:37:41,229 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 38 [2024-11-28 02:37:41,230 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:37:41,689 INFO L124 PetriNetUnfolderBase]: 431/783 cut-off events. [2024-11-28 02:37:41,689 INFO L125 PetriNetUnfolderBase]: For 21/21 co-relation queries the response was YES. [2024-11-28 02:37:41,694 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1490 conditions, 783 events. 431/783 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 3660 event pairs, 170 based on Foata normal form. 18/787 useless extension candidates. Maximal degree in co-relation 1430. Up to 402 conditions per place. [2024-11-28 02:37:41,704 INFO L140 encePairwiseOnDemand]: 35/38 looper letters, 38 selfloop transitions, 2 changer transitions 0/49 dead transitions. [2024-11-28 02:37:41,705 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 49 transitions, 193 flow [2024-11-28 02:37:41,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:37:41,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 02:37:41,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 80 transitions. [2024-11-28 02:37:41,730 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7017543859649122 [2024-11-28 02:37:41,732 INFO L175 Difference]: Start difference. First operand has 35 places, 32 transitions, 76 flow. Second operand 3 states and 80 transitions. [2024-11-28 02:37:41,734 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 49 transitions, 193 flow [2024-11-28 02:37:41,740 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 49 transitions, 183 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-28 02:37:41,746 INFO L231 Difference]: Finished difference. Result has 34 places, 33 transitions, 80 flow [2024-11-28 02:37:41,749 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=80, PETRI_PLACES=34, PETRI_TRANSITIONS=33} [2024-11-28 02:37:41,754 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, -1 predicate places. [2024-11-28 02:37:41,754 INFO L471 AbstractCegarLoop]: Abstraction has has 34 places, 33 transitions, 80 flow [2024-11-28 02:37:41,755 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 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) [2024-11-28 02:37:41,755 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:37:41,756 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] [2024-11-28 02:37:41,756 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 02:37:41,756 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 02:37:41,757 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:37:41,757 INFO L85 PathProgramCache]: Analyzing trace with hash -95583569, now seen corresponding path program 1 times [2024-11-28 02:37:41,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:37:41,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860887989] [2024-11-28 02:37:41,758 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:37:41,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:37:42,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:37:42,528 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 02:37:42,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:37:42,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860887989] [2024-11-28 02:37:42,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [860887989] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:37:42,529 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:37:42,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:37:42,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799340040] [2024-11-28 02:37:42,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:37:42,530 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:37:42,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:37:42,531 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:37:42,531 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:37:42,536 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 38 [2024-11-28 02:37:42,537 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 33 transitions, 80 flow. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 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) [2024-11-28 02:37:42,537 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:37:42,537 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 38 [2024-11-28 02:37:42,537 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:37:42,910 INFO L124 PetriNetUnfolderBase]: 732/1317 cut-off events. [2024-11-28 02:37:42,910 INFO L125 PetriNetUnfolderBase]: For 132/132 co-relation queries the response was YES. [2024-11-28 02:37:42,917 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2591 conditions, 1317 events. 732/1317 cut-off events. For 132/132 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 6648 event pairs, 295 based on Foata normal form. 29/1324 useless extension candidates. Maximal degree in co-relation 974. Up to 683 conditions per place. [2024-11-28 02:37:42,925 INFO L140 encePairwiseOnDemand]: 35/38 looper letters, 39 selfloop transitions, 2 changer transitions 0/50 dead transitions. [2024-11-28 02:37:42,926 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 50 transitions, 207 flow [2024-11-28 02:37:42,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:37:42,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 02:37:42,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 79 transitions. [2024-11-28 02:37:42,929 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6929824561403509 [2024-11-28 02:37:42,930 INFO L175 Difference]: Start difference. First operand has 34 places, 33 transitions, 80 flow. Second operand 3 states and 79 transitions. [2024-11-28 02:37:42,930 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 50 transitions, 207 flow [2024-11-28 02:37:42,931 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 50 transitions, 203 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 02:37:42,933 INFO L231 Difference]: Finished difference. Result has 36 places, 34 transitions, 90 flow [2024-11-28 02:37:42,935 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=90, PETRI_PLACES=36, PETRI_TRANSITIONS=34} [2024-11-28 02:37:42,936 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 1 predicate places. [2024-11-28 02:37:42,936 INFO L471 AbstractCegarLoop]: Abstraction has has 36 places, 34 transitions, 90 flow [2024-11-28 02:37:42,937 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 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) [2024-11-28 02:37:42,937 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:37:42,937 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] [2024-11-28 02:37:42,937 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 02:37:42,937 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 02:37:42,938 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:37:42,938 INFO L85 PathProgramCache]: Analyzing trace with hash 1369793491, now seen corresponding path program 1 times [2024-11-28 02:37:42,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:37:42,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086888345] [2024-11-28 02:37:42,938 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:37:42,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:37:43,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:37:43,791 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:37:43,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:37:43,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086888345] [2024-11-28 02:37:43,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2086888345] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:37:43,792 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:37:43,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:37:43,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633051755] [2024-11-28 02:37:43,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:37:43,793 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:37:43,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:37:43,795 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:37:43,797 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:37:43,797 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 38 [2024-11-28 02:37:43,797 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 34 transitions, 90 flow. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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) [2024-11-28 02:37:43,797 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:37:43,797 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 38 [2024-11-28 02:37:43,797 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:37:44,091 INFO L124 PetriNetUnfolderBase]: 427/899 cut-off events. [2024-11-28 02:37:44,091 INFO L125 PetriNetUnfolderBase]: For 192/192 co-relation queries the response was YES. [2024-11-28 02:37:44,092 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1867 conditions, 899 events. 427/899 cut-off events. For 192/192 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 4324 event pairs, 182 based on Foata normal form. 64/962 useless extension candidates. Maximal degree in co-relation 632. Up to 372 conditions per place. [2024-11-28 02:37:44,097 INFO L140 encePairwiseOnDemand]: 30/38 looper letters, 29 selfloop transitions, 8 changer transitions 0/46 dead transitions. [2024-11-28 02:37:44,098 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 46 transitions, 208 flow [2024-11-28 02:37:44,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:37:44,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 02:37:44,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 76 transitions. [2024-11-28 02:37:44,100 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-11-28 02:37:44,100 INFO L175 Difference]: Start difference. First operand has 36 places, 34 transitions, 90 flow. Second operand 3 states and 76 transitions. [2024-11-28 02:37:44,100 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 46 transitions, 208 flow [2024-11-28 02:37:44,101 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 46 transitions, 204 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 02:37:44,103 INFO L231 Difference]: Finished difference. Result has 37 places, 34 transitions, 104 flow [2024-11-28 02:37:44,103 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=104, PETRI_PLACES=37, PETRI_TRANSITIONS=34} [2024-11-28 02:37:44,106 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 2 predicate places. [2024-11-28 02:37:44,106 INFO L471 AbstractCegarLoop]: Abstraction has has 37 places, 34 transitions, 104 flow [2024-11-28 02:37:44,107 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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) [2024-11-28 02:37:44,107 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:37:44,107 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] [2024-11-28 02:37:44,107 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 02:37:44,107 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 02:37:44,109 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:37:44,109 INFO L85 PathProgramCache]: Analyzing trace with hash 666847765, now seen corresponding path program 2 times [2024-11-28 02:37:44,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:37:44,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505731078] [2024-11-28 02:37:44,109 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:37:44,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:37:44,561 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-28 02:37:44,561 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:37:44,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:37:44,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:37:44,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505731078] [2024-11-28 02:37:44,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505731078] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:37:44,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:37:44,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 02:37:44,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258432780] [2024-11-28 02:37:44,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:37:44,701 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:37:44,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:37:44,702 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:37:44,702 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:37:44,708 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 38 [2024-11-28 02:37:44,708 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 34 transitions, 104 flow. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:37:44,709 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:37:44,709 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 38 [2024-11-28 02:37:44,709 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:37:45,119 INFO L124 PetriNetUnfolderBase]: 628/1302 cut-off events. [2024-11-28 02:37:45,120 INFO L125 PetriNetUnfolderBase]: For 452/452 co-relation queries the response was YES. [2024-11-28 02:37:45,122 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3080 conditions, 1302 events. 628/1302 cut-off events. For 452/452 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 6817 event pairs, 184 based on Foata normal form. 30/1314 useless extension candidates. Maximal degree in co-relation 781. Up to 482 conditions per place. [2024-11-28 02:37:45,128 INFO L140 encePairwiseOnDemand]: 35/38 looper letters, 57 selfloop transitions, 3 changer transitions 0/69 dead transitions. [2024-11-28 02:37:45,129 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 69 transitions, 346 flow [2024-11-28 02:37:45,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:37:45,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 02:37:45,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 110 transitions. [2024-11-28 02:37:45,131 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7236842105263158 [2024-11-28 02:37:45,131 INFO L175 Difference]: Start difference. First operand has 37 places, 34 transitions, 104 flow. Second operand 4 states and 110 transitions. [2024-11-28 02:37:45,131 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 69 transitions, 346 flow [2024-11-28 02:37:45,133 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 69 transitions, 322 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 02:37:45,137 INFO L231 Difference]: Finished difference. Result has 40 places, 35 transitions, 112 flow [2024-11-28 02:37:45,137 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=112, PETRI_PLACES=40, PETRI_TRANSITIONS=35} [2024-11-28 02:37:45,140 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 5 predicate places. [2024-11-28 02:37:45,140 INFO L471 AbstractCegarLoop]: Abstraction has has 40 places, 35 transitions, 112 flow [2024-11-28 02:37:45,140 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:37:45,141 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:37:45,141 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:37:45,141 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-28 02:37:45,141 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 02:37:45,142 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:37:45,142 INFO L85 PathProgramCache]: Analyzing trace with hash 863598213, now seen corresponding path program 3 times [2024-11-28 02:37:45,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:37:45,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106774665] [2024-11-28 02:37:45,142 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 02:37:45,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:37:45,528 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-28 02:37:45,528 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:37:45,636 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-28 02:37:45,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:37:45,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106774665] [2024-11-28 02:37:45,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [106774665] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:37:45,637 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:37:45,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 02:37:45,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809647861] [2024-11-28 02:37:45,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:37:45,638 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:37:45,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:37:45,639 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:37:45,639 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:37:45,643 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 38 [2024-11-28 02:37:45,643 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 35 transitions, 112 flow. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:37:45,644 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:37:45,644 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 38 [2024-11-28 02:37:45,644 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:37:46,094 INFO L124 PetriNetUnfolderBase]: 853/1794 cut-off events. [2024-11-28 02:37:46,094 INFO L125 PetriNetUnfolderBase]: For 836/836 co-relation queries the response was YES. [2024-11-28 02:37:46,098 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4148 conditions, 1794 events. 853/1794 cut-off events. For 836/836 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 9909 event pairs, 260 based on Foata normal form. 41/1809 useless extension candidates. Maximal degree in co-relation 1320. Up to 674 conditions per place. [2024-11-28 02:37:46,106 INFO L140 encePairwiseOnDemand]: 35/38 looper letters, 58 selfloop transitions, 3 changer transitions 0/70 dead transitions. [2024-11-28 02:37:46,106 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 70 transitions, 368 flow [2024-11-28 02:37:46,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:37:46,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 02:37:46,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 108 transitions. [2024-11-28 02:37:46,109 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7105263157894737 [2024-11-28 02:37:46,109 INFO L175 Difference]: Start difference. First operand has 40 places, 35 transitions, 112 flow. Second operand 4 states and 108 transitions. [2024-11-28 02:37:46,109 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 70 transitions, 368 flow [2024-11-28 02:37:46,111 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 70 transitions, 350 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-11-28 02:37:46,115 INFO L231 Difference]: Finished difference. Result has 42 places, 36 transitions, 122 flow [2024-11-28 02:37:46,115 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=122, PETRI_PLACES=42, PETRI_TRANSITIONS=36} [2024-11-28 02:37:46,116 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 7 predicate places. [2024-11-28 02:37:46,116 INFO L471 AbstractCegarLoop]: Abstraction has has 42 places, 36 transitions, 122 flow [2024-11-28 02:37:46,116 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:37:46,116 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:37:46,116 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:37:46,117 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-28 02:37:46,117 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 02:37:46,117 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:37:46,120 INFO L85 PathProgramCache]: Analyzing trace with hash -1668631835, now seen corresponding path program 4 times [2024-11-28 02:37:46,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:37:46,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640026824] [2024-11-28 02:37:46,120 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 02:37:46,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:37:46,486 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 02:37:46,486 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:37:46,598 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-28 02:37:46,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:37:46,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640026824] [2024-11-28 02:37:46,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640026824] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:37:46,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1313926066] [2024-11-28 02:37:46,599 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 02:37:46,600 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:37:46,600 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_465b006d-cbbd-4593-9a06-3cbd6e195f36/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:37:46,605 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_465b006d-cbbd-4593-9a06-3cbd6e195f36/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:37:46,607 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_465b006d-cbbd-4593-9a06-3cbd6e195f36/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 02:37:47,354 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 02:37:47,355 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:37:47,359 INFO L256 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 02:37:47,365 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:37:47,475 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 02:37:47,475 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:37:47,552 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 02:37:47,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1313926066] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:37:47,552 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:37:47,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2024-11-28 02:37:47,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808646841] [2024-11-28 02:37:47,553 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:37:47,553 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-28 02:37:47,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:37:47,554 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-28 02:37:47,554 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-28 02:37:47,563 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-11-28 02:37:47,563 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 36 transitions, 122 flow. Second operand has 9 states, 9 states have (on average 18.666666666666668) internal successors, (168), 9 states have internal predecessors, (168), 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) [2024-11-28 02:37:47,564 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:37:47,564 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-11-28 02:37:47,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:37:48,771 INFO L124 PetriNetUnfolderBase]: 1810/3543 cut-off events. [2024-11-28 02:37:48,772 INFO L125 PetriNetUnfolderBase]: For 1762/1762 co-relation queries the response was YES. [2024-11-28 02:37:48,782 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8349 conditions, 3543 events. 1810/3543 cut-off events. For 1762/1762 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 19988 event pairs, 83 based on Foata normal form. 164/3699 useless extension candidates. Maximal degree in co-relation 2425. Up to 618 conditions per place. [2024-11-28 02:37:48,801 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 246 selfloop transitions, 44 changer transitions 0/298 dead transitions. [2024-11-28 02:37:48,802 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 298 transitions, 1535 flow [2024-11-28 02:37:48,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-28 02:37:48,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-11-28 02:37:48,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 555 transitions. [2024-11-28 02:37:48,809 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6954887218045113 [2024-11-28 02:37:48,810 INFO L175 Difference]: Start difference. First operand has 42 places, 36 transitions, 122 flow. Second operand 21 states and 555 transitions. [2024-11-28 02:37:48,810 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 298 transitions, 1535 flow [2024-11-28 02:37:48,822 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 298 transitions, 1511 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-11-28 02:37:48,828 INFO L231 Difference]: Finished difference. Result has 74 places, 73 transitions, 490 flow [2024-11-28 02:37:48,828 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=490, PETRI_PLACES=74, PETRI_TRANSITIONS=73} [2024-11-28 02:37:48,829 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 39 predicate places. [2024-11-28 02:37:48,830 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 73 transitions, 490 flow [2024-11-28 02:37:48,831 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 18.666666666666668) internal successors, (168), 9 states have internal predecessors, (168), 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) [2024-11-28 02:37:48,831 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:37:48,831 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:37:48,844 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_465b006d-cbbd-4593-9a06-3cbd6e195f36/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 02:37:49,036 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_465b006d-cbbd-4593-9a06-3cbd6e195f36/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:37:49,037 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 02:37:49,038 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:37:49,038 INFO L85 PathProgramCache]: Analyzing trace with hash 821036955, now seen corresponding path program 5 times [2024-11-28 02:37:49,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:37:49,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740258374] [2024-11-28 02:37:49,038 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 02:37:49,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:37:49,410 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2024-11-28 02:37:49,410 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:37:49,565 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-28 02:37:49,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:37:49,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740258374] [2024-11-28 02:37:49,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740258374] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:37:49,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:37:49,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 02:37:49,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878276358] [2024-11-28 02:37:49,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:37:49,567 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:37:49,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:37:49,568 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:37:49,568 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:37:49,578 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-11-28 02:37:49,578 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 73 transitions, 490 flow. Second operand has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 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) [2024-11-28 02:37:49,578 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:37:49,578 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-11-28 02:37:49,578 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:37:50,285 INFO L124 PetriNetUnfolderBase]: 1683/3434 cut-off events. [2024-11-28 02:37:50,285 INFO L125 PetriNetUnfolderBase]: For 9589/9589 co-relation queries the response was YES. [2024-11-28 02:37:50,301 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10815 conditions, 3434 events. 1683/3434 cut-off events. For 9589/9589 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 19569 event pairs, 421 based on Foata normal form. 0/3247 useless extension candidates. Maximal degree in co-relation 9577. Up to 1609 conditions per place. [2024-11-28 02:37:50,318 INFO L140 encePairwiseOnDemand]: 33/38 looper letters, 97 selfloop transitions, 4 changer transitions 0/112 dead transitions. [2024-11-28 02:37:50,319 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 112 transitions, 997 flow [2024-11-28 02:37:50,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:37:50,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 02:37:50,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 87 transitions. [2024-11-28 02:37:50,320 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5723684210526315 [2024-11-28 02:37:50,320 INFO L175 Difference]: Start difference. First operand has 74 places, 73 transitions, 490 flow. Second operand 4 states and 87 transitions. [2024-11-28 02:37:50,320 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 112 transitions, 997 flow [2024-11-28 02:37:50,401 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 112 transitions, 843 flow, removed 48 selfloop flow, removed 4 redundant places. [2024-11-28 02:37:50,403 INFO L231 Difference]: Finished difference. Result has 75 places, 73 transitions, 413 flow [2024-11-28 02:37:50,404 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=388, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=413, PETRI_PLACES=75, PETRI_TRANSITIONS=73} [2024-11-28 02:37:50,405 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 40 predicate places. [2024-11-28 02:37:50,406 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 73 transitions, 413 flow [2024-11-28 02:37:50,407 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 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) [2024-11-28 02:37:50,407 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:37:50,407 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:37:50,407 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-28 02:37:50,407 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 02:37:50,408 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:37:50,410 INFO L85 PathProgramCache]: Analyzing trace with hash -742238779, now seen corresponding path program 6 times [2024-11-28 02:37:50,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:37:50,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165570702] [2024-11-28 02:37:50,410 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 02:37:50,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:37:50,859 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-11-28 02:37:50,860 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:37:50,938 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-28 02:37:50,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:37:50,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165570702] [2024-11-28 02:37:50,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1165570702] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:37:50,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:37:50,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 02:37:50,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366293319] [2024-11-28 02:37:50,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:37:50,944 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:37:50,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:37:50,945 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:37:50,945 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:37:50,949 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 38 [2024-11-28 02:37:50,953 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 73 transitions, 413 flow. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 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) [2024-11-28 02:37:50,953 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:37:50,953 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 38 [2024-11-28 02:37:50,953 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:37:51,486 INFO L124 PetriNetUnfolderBase]: 1218/2532 cut-off events. [2024-11-28 02:37:51,486 INFO L125 PetriNetUnfolderBase]: For 7378/7378 co-relation queries the response was YES. [2024-11-28 02:37:51,497 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8353 conditions, 2532 events. 1218/2532 cut-off events. For 7378/7378 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 13738 event pairs, 303 based on Foata normal form. 0/2423 useless extension candidates. Maximal degree in co-relation 7357. Up to 1763 conditions per place. [2024-11-28 02:37:51,512 INFO L140 encePairwiseOnDemand]: 33/38 looper letters, 72 selfloop transitions, 3 changer transitions 2/88 dead transitions. [2024-11-28 02:37:51,513 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 88 transitions, 652 flow [2024-11-28 02:37:51,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:37:51,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 02:37:51,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 73 transitions. [2024-11-28 02:37:51,514 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6403508771929824 [2024-11-28 02:37:51,514 INFO L175 Difference]: Start difference. First operand has 75 places, 73 transitions, 413 flow. Second operand 3 states and 73 transitions. [2024-11-28 02:37:51,514 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 88 transitions, 652 flow [2024-11-28 02:37:51,541 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 88 transitions, 651 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 02:37:51,543 INFO L231 Difference]: Finished difference. Result has 78 places, 71 transitions, 417 flow [2024-11-28 02:37:51,545 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=387, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=417, PETRI_PLACES=78, PETRI_TRANSITIONS=71} [2024-11-28 02:37:51,546 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 43 predicate places. [2024-11-28 02:37:51,546 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 71 transitions, 417 flow [2024-11-28 02:37:51,546 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 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) [2024-11-28 02:37:51,546 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:37:51,546 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:37:51,546 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-28 02:37:51,546 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 02:37:51,550 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:37:51,550 INFO L85 PathProgramCache]: Analyzing trace with hash 2085612879, now seen corresponding path program 7 times [2024-11-28 02:37:51,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:37:51,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314442478] [2024-11-28 02:37:51,551 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 02:37:51,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:37:51,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:37:52,188 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 02:37:52,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:37:52,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314442478] [2024-11-28 02:37:52,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [314442478] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:37:52,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1541983302] [2024-11-28 02:37:52,189 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 02:37:52,189 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:37:52,189 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_465b006d-cbbd-4593-9a06-3cbd6e195f36/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:37:52,191 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_465b006d-cbbd-4593-9a06-3cbd6e195f36/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:37:52,196 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_465b006d-cbbd-4593-9a06-3cbd6e195f36/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 02:37:52,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:37:52,912 INFO L256 TraceCheckSpWp]: Trace formula consists of 512 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 02:37:52,915 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:37:53,019 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 02:37:53,020 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:37:53,134 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 02:37:53,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1541983302] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:37:53,135 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:37:53,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 7 [2024-11-28 02:37:53,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197472338] [2024-11-28 02:37:53,136 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:37:53,136 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 02:37:53,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:37:53,137 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 02:37:53,139 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-28 02:37:53,145 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2024-11-28 02:37:53,146 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 71 transitions, 417 flow. Second operand has 7 states, 7 states have (on average 19.428571428571427) internal successors, (136), 7 states have internal predecessors, (136), 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) [2024-11-28 02:37:53,146 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:37:53,146 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2024-11-28 02:37:53,146 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:37:53,663 INFO L124 PetriNetUnfolderBase]: 1352/2785 cut-off events. [2024-11-28 02:37:53,664 INFO L125 PetriNetUnfolderBase]: For 8758/8772 co-relation queries the response was YES. [2024-11-28 02:37:53,677 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9009 conditions, 2785 events. 1352/2785 cut-off events. For 8758/8772 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 14865 event pairs, 213 based on Foata normal form. 52/2816 useless extension candidates. Maximal degree in co-relation 8314. Up to 714 conditions per place. [2024-11-28 02:37:53,694 INFO L140 encePairwiseOnDemand]: 34/38 looper letters, 95 selfloop transitions, 18 changer transitions 1/128 dead transitions. [2024-11-28 02:37:53,694 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 128 transitions, 943 flow [2024-11-28 02:37:53,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 02:37:53,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-28 02:37:53,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 155 transitions. [2024-11-28 02:37:53,697 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6798245614035088 [2024-11-28 02:37:53,697 INFO L175 Difference]: Start difference. First operand has 78 places, 71 transitions, 417 flow. Second operand 6 states and 155 transitions. [2024-11-28 02:37:53,697 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 128 transitions, 943 flow [2024-11-28 02:37:53,723 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 128 transitions, 929 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-11-28 02:37:53,725 INFO L231 Difference]: Finished difference. Result has 83 places, 72 transitions, 461 flow [2024-11-28 02:37:53,726 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=409, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=461, PETRI_PLACES=83, PETRI_TRANSITIONS=72} [2024-11-28 02:37:53,726 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 48 predicate places. [2024-11-28 02:37:53,726 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 72 transitions, 461 flow [2024-11-28 02:37:53,727 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.428571428571427) internal successors, (136), 7 states have internal predecessors, (136), 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) [2024-11-28 02:37:53,727 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:37:53,727 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:37:53,738 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_465b006d-cbbd-4593-9a06-3cbd6e195f36/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-28 02:37:53,927 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_465b006d-cbbd-4593-9a06-3cbd6e195f36/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:37:53,928 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 02:37:53,928 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:37:53,928 INFO L85 PathProgramCache]: Analyzing trace with hash -1347114195, now seen corresponding path program 8 times [2024-11-28 02:37:53,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:37:53,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641979462] [2024-11-28 02:37:53,929 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:37:53,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:37:54,310 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:37:54,310 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:37:55,102 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:37:55,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:37:55,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641979462] [2024-11-28 02:37:55,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641979462] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:37:55,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [365934663] [2024-11-28 02:37:55,105 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:37:55,105 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:37:55,105 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_465b006d-cbbd-4593-9a06-3cbd6e195f36/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:37:55,107 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_465b006d-cbbd-4593-9a06-3cbd6e195f36/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:37:55,111 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_465b006d-cbbd-4593-9a06-3cbd6e195f36/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 02:37:55,822 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:37:55,822 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:37:55,825 INFO L256 TraceCheckSpWp]: Trace formula consists of 533 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-28 02:37:55,829 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:37:56,423 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:37:56,424 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:37:57,124 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:37:57,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [365934663] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:37:57,125 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:37:57,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 12] total 30 [2024-11-28 02:37:57,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276099228] [2024-11-28 02:37:57,125 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:37:57,126 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-28 02:37:57,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:37:57,129 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-28 02:37:57,129 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=843, Unknown=0, NotChecked=0, Total=930 [2024-11-28 02:37:57,812 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-11-28 02:37:57,813 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 72 transitions, 461 flow. Second operand has 31 states, 31 states have (on average 14.096774193548388) internal successors, (437), 31 states have internal predecessors, (437), 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) [2024-11-28 02:37:57,813 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:37:57,813 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-11-28 02:37:57,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:38:00,132 INFO L124 PetriNetUnfolderBase]: 1252/2592 cut-off events. [2024-11-28 02:38:00,132 INFO L125 PetriNetUnfolderBase]: For 8514/8532 co-relation queries the response was YES. [2024-11-28 02:38:00,149 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8916 conditions, 2592 events. 1252/2592 cut-off events. For 8514/8532 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 14143 event pairs, 81 based on Foata normal form. 76/2666 useless extension candidates. Maximal degree in co-relation 7824. Up to 546 conditions per place. [2024-11-28 02:38:00,153 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 0 selfloop transitions, 0 changer transitions 167/167 dead transitions. [2024-11-28 02:38:00,153 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 167 transitions, 1333 flow [2024-11-28 02:38:00,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-28 02:38:00,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-28 02:38:00,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 239 transitions. [2024-11-28 02:38:00,157 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5241228070175439 [2024-11-28 02:38:00,157 INFO L175 Difference]: Start difference. First operand has 83 places, 72 transitions, 461 flow. Second operand 12 states and 239 transitions. [2024-11-28 02:38:00,157 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 167 transitions, 1333 flow [2024-11-28 02:38:00,190 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 167 transitions, 1256 flow, removed 15 selfloop flow, removed 3 redundant places. [2024-11-28 02:38:00,193 INFO L231 Difference]: Finished difference. Result has 89 places, 0 transitions, 0 flow [2024-11-28 02:38:00,194 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=401, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=0, PETRI_PLACES=89, PETRI_TRANSITIONS=0} [2024-11-28 02:38:00,196 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 54 predicate places. [2024-11-28 02:38:00,196 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 0 transitions, 0 flow [2024-11-28 02:38:00,197 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 14.096774193548388) internal successors, (437), 31 states have internal predecessors, (437), 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) [2024-11-28 02:38:00,201 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2024-11-28 02:38:00,201 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2024-11-28 02:38:00,202 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2024-11-28 02:38:00,215 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_465b006d-cbbd-4593-9a06-3cbd6e195f36/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-28 02:38:00,402 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_465b006d-cbbd-4593-9a06-3cbd6e195f36/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:38:00,403 INFO L422 BasicCegarLoop]: Path program histogram: [8, 1, 1] [2024-11-28 02:38:00,408 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-28 02:38:00,408 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-28 02:38:00,419 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 02:38:00 BasicIcfg [2024-11-28 02:38:00,419 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-28 02:38:00,420 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-28 02:38:00,420 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-28 02:38:00,420 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-28 02:38:00,421 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:37:39" (3/4) ... [2024-11-28 02:38:00,424 INFO L146 WitnessPrinter]: Generating witness for correct program [2024-11-28 02:38:00,428 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2024-11-28 02:38:00,428 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2024-11-28 02:38:00,442 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 253 nodes and edges [2024-11-28 02:38:00,446 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2024-11-28 02:38:00,446 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2024-11-28 02:38:00,447 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2024-11-28 02:38:00,447 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-28 02:38:00,575 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_465b006d-cbbd-4593-9a06-3cbd6e195f36/bin/uautomizer-verify-aQ6SnzHsRB/witness.graphml [2024-11-28 02:38:00,575 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_465b006d-cbbd-4593-9a06-3cbd6e195f36/bin/uautomizer-verify-aQ6SnzHsRB/witness.yml [2024-11-28 02:38:00,575 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-28 02:38:00,578 INFO L158 Benchmark]: Toolchain (without parser) took 24282.15ms. Allocated memory was 167.8MB in the beginning and 738.2MB in the end (delta: 570.4MB). Free memory was 128.3MB in the beginning and 440.2MB in the end (delta: -312.0MB). Peak memory consumption was 253.6MB. Max. memory is 16.1GB. [2024-11-28 02:38:00,578 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 167.8MB. Free memory is still 104.7MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 02:38:00,579 INFO L158 Benchmark]: CACSL2BoogieTranslator took 907.89ms. Allocated memory is still 167.8MB. Free memory was 127.9MB in the beginning and 99.9MB in the end (delta: 28.0MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2024-11-28 02:38:00,580 INFO L158 Benchmark]: Boogie Procedure Inliner took 69.20ms. Allocated memory is still 167.8MB. Free memory was 99.9MB in the beginning and 97.0MB in the end (delta: 2.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-28 02:38:00,580 INFO L158 Benchmark]: Boogie Preprocessor took 65.71ms. Allocated memory is still 167.8MB. Free memory was 97.0MB in the beginning and 93.8MB in the end (delta: 3.2MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 02:38:00,582 INFO L158 Benchmark]: RCFGBuilder took 2096.40ms. Allocated memory is still 167.8MB. Free memory was 93.8MB in the beginning and 47.0MB in the end (delta: 46.8MB). Peak memory consumption was 65.0MB. Max. memory is 16.1GB. [2024-11-28 02:38:00,583 INFO L158 Benchmark]: TraceAbstraction took 20974.98ms. Allocated memory was 167.8MB in the beginning and 738.2MB in the end (delta: 570.4MB). Free memory was 45.7MB in the beginning and 447.3MB in the end (delta: -401.5MB). Peak memory consumption was 175.6MB. Max. memory is 16.1GB. [2024-11-28 02:38:00,584 INFO L158 Benchmark]: Witness Printer took 156.02ms. Allocated memory is still 738.2MB. Free memory was 447.3MB in the beginning and 440.2MB in the end (delta: 7.0MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 02:38:00,585 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 167.8MB. Free memory is still 104.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 907.89ms. Allocated memory is still 167.8MB. Free memory was 127.9MB in the beginning and 99.9MB in the end (delta: 28.0MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 69.20ms. Allocated memory is still 167.8MB. Free memory was 99.9MB in the beginning and 97.0MB in the end (delta: 2.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 65.71ms. Allocated memory is still 167.8MB. Free memory was 97.0MB in the beginning and 93.8MB in the end (delta: 3.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 2096.40ms. Allocated memory is still 167.8MB. Free memory was 93.8MB in the beginning and 47.0MB in the end (delta: 46.8MB). Peak memory consumption was 65.0MB. Max. memory is 16.1GB. * TraceAbstraction took 20974.98ms. Allocated memory was 167.8MB in the beginning and 738.2MB in the end (delta: 570.4MB). Free memory was 45.7MB in the beginning and 447.3MB in the end (delta: -401.5MB). Peak memory consumption was 175.6MB. Max. memory is 16.1GB. * Witness Printer took 156.02ms. Allocated memory is still 738.2MB. Free memory was 447.3MB in the beginning and 440.2MB in the end (delta: 7.0MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 919]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 55 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 20.8s, OverallIterations: 10, TraceHistogramMax: 4, PathProgramHistogramMax: 8, EmptinessCheckTime: 0.0s, AutomataDifference: 8.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 588 SdHoareTripleChecker+Valid, 4.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 576 mSDsluCounter, 11 SdHoareTripleChecker+Invalid, 3.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 9 mSDsCounter, 18 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3522 IncrementalHoareTripleChecker+Invalid, 3540 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 18 mSolverCounterUnsat, 2 mSDtfsCounter, 3522 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 376 GetRequests, 306 SyntacticMatches, 6 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 313 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=490occurred in iteration=6, InterpolantAutomatonStates: 63, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 4.3s InterpolantComputationTime, 542 NumberOfCodeBlocks, 514 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 682 ConstructedInterpolants, 0 QuantifiedInterpolants, 2315 SizeOfPredicates, 1 NumberOfNonLiveVariables, 1198 ConjunctsInSsa, 32 ConjunctsInUnsatCore, 16 InterpolantComputations, 7 PerfectInterpolantSequences, 123/336 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-11-28 02:38:00,611 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_465b006d-cbbd-4593-9a06-3cbd6e195f36/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE