./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe019_rmo.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4fc63b2a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0b102e9-ba43-43d6-b9f4-55df4fce74d9/bin/uautomizer-verify-4GaUIPS5ZU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0b102e9-ba43-43d6-b9f4-55df4fce74d9/bin/uautomizer-verify-4GaUIPS5ZU/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0b102e9-ba43-43d6-b9f4-55df4fce74d9/bin/uautomizer-verify-4GaUIPS5ZU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0b102e9-ba43-43d6-b9f4-55df4fce74d9/bin/uautomizer-verify-4GaUIPS5ZU/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe019_rmo.opt.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0b102e9-ba43-43d6-b9f4-55df4fce74d9/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0b102e9-ba43-43d6-b9f4-55df4fce74d9/bin/uautomizer-verify-4GaUIPS5ZU --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 2ad190c36ab064f1e4bfbebf06775e6b037058a5a86becabf7b70897d3619304 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-10-31 22:10:07,120 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-31 22:10:07,216 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0b102e9-ba43-43d6-b9f4-55df4fce74d9/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-31 22:10:07,220 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-31 22:10:07,221 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-31 22:10:07,245 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-31 22:10:07,249 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-31 22:10:07,249 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-31 22:10:07,250 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-31 22:10:07,250 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-31 22:10:07,251 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-31 22:10:07,251 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-31 22:10:07,252 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-31 22:10:07,252 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-31 22:10:07,252 INFO L153 SettingsManager]: * Use SBE=true [2024-10-31 22:10:07,257 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-31 22:10:07,257 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-31 22:10:07,258 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-31 22:10:07,258 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-31 22:10:07,258 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-31 22:10:07,260 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-31 22:10:07,260 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-31 22:10:07,264 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-31 22:10:07,264 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-31 22:10:07,264 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-31 22:10:07,265 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-31 22:10:07,265 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-31 22:10:07,265 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-31 22:10:07,265 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-31 22:10:07,266 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-31 22:10:07,266 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-31 22:10:07,266 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-31 22:10:07,266 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:10:07,267 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-31 22:10:07,268 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-31 22:10:07,269 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-31 22:10:07,269 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-31 22:10:07,269 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-31 22:10:07,270 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-31 22:10:07,270 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-31 22:10:07,271 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-31 22:10:07,271 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-31 22:10:07,272 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0b102e9-ba43-43d6-b9f4-55df4fce74d9/bin/uautomizer-verify-4GaUIPS5ZU/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0b102e9-ba43-43d6-b9f4-55df4fce74d9/bin/uautomizer-verify-4GaUIPS5ZU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2ad190c36ab064f1e4bfbebf06775e6b037058a5a86becabf7b70897d3619304 [2024-10-31 22:10:07,608 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-31 22:10:07,632 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-31 22:10:07,634 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-31 22:10:07,636 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-31 22:10:07,636 INFO L274 PluginConnector]: CDTParser initialized [2024-10-31 22:10:07,638 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0b102e9-ba43-43d6-b9f4-55df4fce74d9/bin/uautomizer-verify-4GaUIPS5ZU/../../sv-benchmarks/c/pthread-wmm/safe019_rmo.opt.i Unable to find full path for "g++" [2024-10-31 22:10:09,806 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-31 22:10:10,128 INFO L384 CDTParser]: Found 1 translation units. [2024-10-31 22:10:10,129 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0b102e9-ba43-43d6-b9f4-55df4fce74d9/sv-benchmarks/c/pthread-wmm/safe019_rmo.opt.i [2024-10-31 22:10:10,143 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0b102e9-ba43-43d6-b9f4-55df4fce74d9/bin/uautomizer-verify-4GaUIPS5ZU/data/be34346fd/24a5981fdce64315887cb85a9aad1ca1/FLAG1cea3eb33 [2024-10-31 22:10:10,380 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0b102e9-ba43-43d6-b9f4-55df4fce74d9/bin/uautomizer-verify-4GaUIPS5ZU/data/be34346fd/24a5981fdce64315887cb85a9aad1ca1 [2024-10-31 22:10:10,382 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-31 22:10:10,383 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-31 22:10:10,384 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-31 22:10:10,384 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-31 22:10:10,389 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-31 22:10:10,390 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:10:10" (1/1) ... [2024-10-31 22:10:10,390 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a84894a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:10:10, skipping insertion in model container [2024-10-31 22:10:10,391 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:10:10" (1/1) ... [2024-10-31 22:10:10,441 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-31 22:10:10,659 WARN L251 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_b0b102e9-ba43-43d6-b9f4-55df4fce74d9/sv-benchmarks/c/pthread-wmm/safe019_rmo.opt.i[992,1005] [2024-10-31 22:10:10,961 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:10:10,986 INFO L200 MainTranslator]: Completed pre-run [2024-10-31 22:10:11,002 WARN L251 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_b0b102e9-ba43-43d6-b9f4-55df4fce74d9/sv-benchmarks/c/pthread-wmm/safe019_rmo.opt.i[992,1005] [2024-10-31 22:10:11,109 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:10:11,167 INFO L204 MainTranslator]: Completed translation [2024-10-31 22:10:11,168 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:10:11 WrapperNode [2024-10-31 22:10:11,168 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-31 22:10:11,170 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-31 22:10:11,171 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-31 22:10:11,171 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-31 22:10:11,179 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:10:11" (1/1) ... [2024-10-31 22:10:11,204 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:10:11" (1/1) ... [2024-10-31 22:10:11,249 INFO L138 Inliner]: procedures = 176, calls = 70, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 136 [2024-10-31 22:10:11,249 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-31 22:10:11,250 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-31 22:10:11,251 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-31 22:10:11,251 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-31 22:10:11,264 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:10:11" (1/1) ... [2024-10-31 22:10:11,264 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:10:11" (1/1) ... [2024-10-31 22:10:11,274 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:10:11" (1/1) ... [2024-10-31 22:10:11,301 INFO L175 MemorySlicer]: Split 25 memory accesses to 2 slices as follows [2, 23]. 92 percent of accesses are in the largest equivalence class. The 3 initializations are split as follows [2, 1]. The 9 writes are split as follows [0, 9]. [2024-10-31 22:10:11,302 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:10:11" (1/1) ... [2024-10-31 22:10:11,302 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:10:11" (1/1) ... [2024-10-31 22:10:11,322 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:10:11" (1/1) ... [2024-10-31 22:10:11,324 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:10:11" (1/1) ... [2024-10-31 22:10:11,329 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:10:11" (1/1) ... [2024-10-31 22:10:11,332 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:10:11" (1/1) ... [2024-10-31 22:10:11,339 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-31 22:10:11,343 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-31 22:10:11,344 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-31 22:10:11,344 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-31 22:10:11,345 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:10:11" (1/1) ... [2024-10-31 22:10:11,355 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:10:11,367 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0b102e9-ba43-43d6-b9f4-55df4fce74d9/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:10:11,387 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0b102e9-ba43-43d6-b9f4-55df4fce74d9/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-31 22:10:11,391 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b0b102e9-ba43-43d6-b9f4-55df4fce74d9/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-31 22:10:11,427 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-31 22:10:11,427 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-31 22:10:11,428 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-31 22:10:11,428 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-31 22:10:11,429 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-31 22:10:11,429 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-31 22:10:11,429 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-10-31 22:10:11,429 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-10-31 22:10:11,431 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-10-31 22:10:11,431 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-10-31 22:10:11,432 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-10-31 22:10:11,432 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-10-31 22:10:11,432 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2024-10-31 22:10:11,432 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2024-10-31 22:10:11,432 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-31 22:10:11,433 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-31 22:10:11,433 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-31 22:10:11,433 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-31 22:10:11,433 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-31 22:10:11,435 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-31 22:10:11,648 INFO L238 CfgBuilder]: Building ICFG [2024-10-31 22:10:11,650 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-31 22:10:12,349 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-31 22:10:12,349 INFO L287 CfgBuilder]: Performing block encoding [2024-10-31 22:10:12,773 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-31 22:10:12,773 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-10-31 22:10:12,774 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:10:12 BoogieIcfgContainer [2024-10-31 22:10:12,774 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-31 22:10:12,777 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-31 22:10:12,777 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-31 22:10:12,781 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-31 22:10:12,781 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.10 10:10:10" (1/3) ... [2024-10-31 22:10:12,782 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70112d94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:10:12, skipping insertion in model container [2024-10-31 22:10:12,783 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:10:11" (2/3) ... [2024-10-31 22:10:12,784 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70112d94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:10:12, skipping insertion in model container [2024-10-31 22:10:12,784 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:10:12" (3/3) ... [2024-10-31 22:10:12,785 INFO L112 eAbstractionObserver]: Analyzing ICFG safe019_rmo.opt.i [2024-10-31 22:10:12,809 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-31 22:10:12,809 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-31 22:10:12,809 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-31 22:10:12,946 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-31 22:10:12,993 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 57 places, 45 transitions, 106 flow [2024-10-31 22:10:13,041 INFO L124 PetriNetUnfolderBase]: 1/41 cut-off events. [2024-10-31 22:10:13,042 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-31 22:10:13,048 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54 conditions, 41 events. 1/41 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 80 event pairs, 0 based on Foata normal form. 0/39 useless extension candidates. Maximal degree in co-relation 45. Up to 2 conditions per place. [2024-10-31 22:10:13,049 INFO L82 GeneralOperation]: Start removeDead. Operand has 57 places, 45 transitions, 106 flow [2024-10-31 22:10:13,054 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 51 places, 38 transitions, 88 flow [2024-10-31 22:10:13,072 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 22:10:13,081 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;@144a5e0b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 22:10:13,081 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-10-31 22:10:13,107 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-31 22:10:13,108 INFO L124 PetriNetUnfolderBase]: 0/37 cut-off events. [2024-10-31 22:10:13,108 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-31 22:10:13,108 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:10:13,109 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:10:13,109 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-10-31 22:10:13,114 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:10:13,114 INFO L85 PathProgramCache]: Analyzing trace with hash -955909716, now seen corresponding path program 1 times [2024-10-31 22:10:13,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:10:13,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083226558] [2024-10-31 22:10:13,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:10:13,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:10:13,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:14,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:10:14,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:10:14,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083226558] [2024-10-31 22:10:14,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1083226558] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:10:14,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:10:14,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-31 22:10:14,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889081712] [2024-10-31 22:10:14,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:10:14,047 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 22:10:14,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:10:14,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 22:10:14,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-31 22:10:14,117 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 45 [2024-10-31 22:10:14,120 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 38 transitions, 88 flow. Second operand has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:10:14,120 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:10:14,121 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 45 [2024-10-31 22:10:14,122 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:10:17,132 INFO L124 PetriNetUnfolderBase]: 6011/9001 cut-off events. [2024-10-31 22:10:17,132 INFO L125 PetriNetUnfolderBase]: For 54/54 co-relation queries the response was YES. [2024-10-31 22:10:17,161 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17409 conditions, 9001 events. 6011/9001 cut-off events. For 54/54 co-relation queries the response was YES. Maximal size of possible extension queue 522. Compared 60667 event pairs, 1479 based on Foata normal form. 240/9222 useless extension candidates. Maximal degree in co-relation 17397. Up to 6097 conditions per place. [2024-10-31 22:10:17,202 INFO L140 encePairwiseOnDemand]: 39/45 looper letters, 36 selfloop transitions, 3 changer transitions 43/94 dead transitions. [2024-10-31 22:10:17,202 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 94 transitions, 367 flow [2024-10-31 22:10:17,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-31 22:10:17,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-31 22:10:17,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 196 transitions. [2024-10-31 22:10:17,216 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6222222222222222 [2024-10-31 22:10:17,218 INFO L175 Difference]: Start difference. First operand has 51 places, 38 transitions, 88 flow. Second operand 7 states and 196 transitions. [2024-10-31 22:10:17,220 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 94 transitions, 367 flow [2024-10-31 22:10:17,227 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 94 transitions, 362 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-31 22:10:17,231 INFO L231 Difference]: Finished difference. Result has 58 places, 40 transitions, 119 flow [2024-10-31 22:10:17,233 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=119, PETRI_PLACES=58, PETRI_TRANSITIONS=40} [2024-10-31 22:10:17,237 INFO L277 CegarLoopForPetriNet]: 51 programPoint places, 7 predicate places. [2024-10-31 22:10:17,237 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 40 transitions, 119 flow [2024-10-31 22:10:17,237 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:10:17,238 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:10:17,238 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:10:17,238 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-31 22:10:17,238 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-10-31 22:10:17,239 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:10:17,239 INFO L85 PathProgramCache]: Analyzing trace with hash 1888872525, now seen corresponding path program 1 times [2024-10-31 22:10:17,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:10:17,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496982872] [2024-10-31 22:10:17,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:10:17,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:10:17,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:17,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:10:17,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:10:17,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496982872] [2024-10-31 22:10:17,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496982872] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:10:17,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:10:17,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-31 22:10:17,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864898785] [2024-10-31 22:10:17,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:10:17,561 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 22:10:17,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:10:17,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 22:10:17,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-31 22:10:17,569 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 45 [2024-10-31 22:10:17,569 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 40 transitions, 119 flow. Second operand has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:10:17,570 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:10:17,570 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 45 [2024-10-31 22:10:17,570 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:10:20,357 INFO L124 PetriNetUnfolderBase]: 5795/9046 cut-off events. [2024-10-31 22:10:20,357 INFO L125 PetriNetUnfolderBase]: For 2880/2880 co-relation queries the response was YES. [2024-10-31 22:10:20,404 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19737 conditions, 9046 events. 5795/9046 cut-off events. For 2880/2880 co-relation queries the response was YES. Maximal size of possible extension queue 493. Compared 61770 event pairs, 1047 based on Foata normal form. 288/9092 useless extension candidates. Maximal degree in co-relation 19722. Up to 5254 conditions per place. [2024-10-31 22:10:20,446 INFO L140 encePairwiseOnDemand]: 40/45 looper letters, 40 selfloop transitions, 2 changer transitions 41/98 dead transitions. [2024-10-31 22:10:20,446 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 98 transitions, 417 flow [2024-10-31 22:10:20,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-31 22:10:20,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-31 22:10:20,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 204 transitions. [2024-10-31 22:10:20,450 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6476190476190476 [2024-10-31 22:10:20,450 INFO L175 Difference]: Start difference. First operand has 58 places, 40 transitions, 119 flow. Second operand 7 states and 204 transitions. [2024-10-31 22:10:20,450 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 98 transitions, 417 flow [2024-10-31 22:10:20,581 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 98 transitions, 406 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-10-31 22:10:20,584 INFO L231 Difference]: Finished difference. Result has 62 places, 40 transitions, 128 flow [2024-10-31 22:10:20,585 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=128, PETRI_PLACES=62, PETRI_TRANSITIONS=40} [2024-10-31 22:10:20,586 INFO L277 CegarLoopForPetriNet]: 51 programPoint places, 11 predicate places. [2024-10-31 22:10:20,586 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 40 transitions, 128 flow [2024-10-31 22:10:20,587 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:10:20,587 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:10:20,587 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:10:20,587 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-31 22:10:20,588 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-10-31 22:10:20,588 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:10:20,590 INFO L85 PathProgramCache]: Analyzing trace with hash 807637562, now seen corresponding path program 1 times [2024-10-31 22:10:20,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:10:20,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211891520] [2024-10-31 22:10:20,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:10:20,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:10:20,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:20,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:10:20,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:10:20,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211891520] [2024-10-31 22:10:20,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211891520] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:10:20,887 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:10:20,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-31 22:10:20,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263001099] [2024-10-31 22:10:20,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:10:20,888 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-31 22:10:20,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:10:20,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-31 22:10:20,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-31 22:10:20,906 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 45 [2024-10-31 22:10:20,907 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 40 transitions, 128 flow. Second operand has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 6 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:10:20,907 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:10:20,907 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 45 [2024-10-31 22:10:20,907 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:10:25,226 INFO L124 PetriNetUnfolderBase]: 9611/14475 cut-off events. [2024-10-31 22:10:25,226 INFO L125 PetriNetUnfolderBase]: For 8914/8914 co-relation queries the response was YES. [2024-10-31 22:10:25,296 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34738 conditions, 14475 events. 9611/14475 cut-off events. For 8914/8914 co-relation queries the response was YES. Maximal size of possible extension queue 715. Compared 98224 event pairs, 1223 based on Foata normal form. 216/14593 useless extension candidates. Maximal degree in co-relation 34719. Up to 6241 conditions per place. [2024-10-31 22:10:25,354 INFO L140 encePairwiseOnDemand]: 38/45 looper letters, 49 selfloop transitions, 4 changer transitions 31/95 dead transitions. [2024-10-31 22:10:25,355 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 95 transitions, 459 flow [2024-10-31 22:10:25,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-31 22:10:25,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-31 22:10:25,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 175 transitions. [2024-10-31 22:10:25,359 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6481481481481481 [2024-10-31 22:10:25,360 INFO L175 Difference]: Start difference. First operand has 62 places, 40 transitions, 128 flow. Second operand 6 states and 175 transitions. [2024-10-31 22:10:25,360 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 95 transitions, 459 flow [2024-10-31 22:10:25,605 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 95 transitions, 441 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-10-31 22:10:25,607 INFO L231 Difference]: Finished difference. Result has 60 places, 40 transitions, 133 flow [2024-10-31 22:10:25,607 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=133, PETRI_PLACES=60, PETRI_TRANSITIONS=40} [2024-10-31 22:10:25,608 INFO L277 CegarLoopForPetriNet]: 51 programPoint places, 9 predicate places. [2024-10-31 22:10:25,608 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 40 transitions, 133 flow [2024-10-31 22:10:25,609 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 6 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:10:25,609 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:10:25,609 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:10:25,609 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-31 22:10:25,609 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-10-31 22:10:25,610 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:10:25,610 INFO L85 PathProgramCache]: Analyzing trace with hash 2135723864, now seen corresponding path program 2 times [2024-10-31 22:10:25,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:10:25,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12544222] [2024-10-31 22:10:25,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:10:25,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:10:25,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:25,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:10:25,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:10:25,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12544222] [2024-10-31 22:10:25,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12544222] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:10:25,923 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:10:25,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-31 22:10:25,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033345518] [2024-10-31 22:10:25,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:10:25,925 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 22:10:25,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:10:25,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 22:10:25,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-31 22:10:25,933 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 45 [2024-10-31 22:10:25,933 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 40 transitions, 133 flow. Second operand has 5 states, 5 states have (on average 20.8) internal successors, (104), 5 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:10:25,933 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:10:25,934 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 45 [2024-10-31 22:10:25,934 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:10:27,748 INFO L124 PetriNetUnfolderBase]: 4165/6756 cut-off events. [2024-10-31 22:10:27,748 INFO L125 PetriNetUnfolderBase]: For 3768/3784 co-relation queries the response was YES. [2024-10-31 22:10:27,771 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15244 conditions, 6756 events. 4165/6756 cut-off events. For 3768/3784 co-relation queries the response was YES. Maximal size of possible extension queue 399. Compared 46555 event pairs, 1825 based on Foata normal form. 180/6736 useless extension candidates. Maximal degree in co-relation 15226. Up to 4093 conditions per place. [2024-10-31 22:10:27,796 INFO L140 encePairwiseOnDemand]: 40/45 looper letters, 34 selfloop transitions, 2 changer transitions 37/89 dead transitions. [2024-10-31 22:10:27,796 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 89 transitions, 393 flow [2024-10-31 22:10:27,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-31 22:10:27,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-31 22:10:27,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 201 transitions. [2024-10-31 22:10:27,798 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.638095238095238 [2024-10-31 22:10:27,798 INFO L175 Difference]: Start difference. First operand has 60 places, 40 transitions, 133 flow. Second operand 7 states and 201 transitions. [2024-10-31 22:10:27,798 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 89 transitions, 393 flow [2024-10-31 22:10:27,827 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 89 transitions, 373 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-10-31 22:10:27,828 INFO L231 Difference]: Finished difference. Result has 64 places, 40 transitions, 135 flow [2024-10-31 22:10:27,829 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=119, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=135, PETRI_PLACES=64, PETRI_TRANSITIONS=40} [2024-10-31 22:10:27,830 INFO L277 CegarLoopForPetriNet]: 51 programPoint places, 13 predicate places. [2024-10-31 22:10:27,830 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 40 transitions, 135 flow [2024-10-31 22:10:27,830 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.8) internal successors, (104), 5 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:10:27,830 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:10:27,830 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:10:27,831 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-31 22:10:27,831 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-10-31 22:10:27,831 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:10:27,831 INFO L85 PathProgramCache]: Analyzing trace with hash -315152351, now seen corresponding path program 1 times [2024-10-31 22:10:27,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:10:27,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326481610] [2024-10-31 22:10:27,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:10:27,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:10:27,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:28,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:10:28,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:10:28,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326481610] [2024-10-31 22:10:28,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [326481610] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:10:28,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:10:28,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-31 22:10:28,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358588186] [2024-10-31 22:10:28,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:10:28,120 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 22:10:28,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:10:28,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 22:10:28,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-31 22:10:28,133 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 45 [2024-10-31 22:10:28,133 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 40 transitions, 135 flow. Second operand has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:10:28,134 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:10:28,134 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 45 [2024-10-31 22:10:28,134 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:10:30,270 INFO L124 PetriNetUnfolderBase]: 6958/10811 cut-off events. [2024-10-31 22:10:30,270 INFO L125 PetriNetUnfolderBase]: For 7506/7506 co-relation queries the response was YES. [2024-10-31 22:10:30,314 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25586 conditions, 10811 events. 6958/10811 cut-off events. For 7506/7506 co-relation queries the response was YES. Maximal size of possible extension queue 613. Compared 75453 event pairs, 2527 based on Foata normal form. 252/10962 useless extension candidates. Maximal degree in co-relation 25566. Up to 4315 conditions per place. [2024-10-31 22:10:30,473 INFO L140 encePairwiseOnDemand]: 40/45 looper letters, 41 selfloop transitions, 3 changer transitions 41/97 dead transitions. [2024-10-31 22:10:30,474 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 97 transitions, 463 flow [2024-10-31 22:10:30,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-31 22:10:30,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-31 22:10:30,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 198 transitions. [2024-10-31 22:10:30,477 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6285714285714286 [2024-10-31 22:10:30,477 INFO L175 Difference]: Start difference. First operand has 64 places, 40 transitions, 135 flow. Second operand 7 states and 198 transitions. [2024-10-31 22:10:30,477 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 97 transitions, 463 flow [2024-10-31 22:10:30,707 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 97 transitions, 429 flow, removed 15 selfloop flow, removed 6 redundant places. [2024-10-31 22:10:30,709 INFO L231 Difference]: Finished difference. Result has 65 places, 40 transitions, 140 flow [2024-10-31 22:10:30,709 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=121, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=140, PETRI_PLACES=65, PETRI_TRANSITIONS=40} [2024-10-31 22:10:30,710 INFO L277 CegarLoopForPetriNet]: 51 programPoint places, 14 predicate places. [2024-10-31 22:10:30,710 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 40 transitions, 140 flow [2024-10-31 22:10:30,711 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:10:30,711 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:10:30,711 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:10:30,711 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-31 22:10:30,712 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-10-31 22:10:30,712 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:10:30,712 INFO L85 PathProgramCache]: Analyzing trace with hash 91454383, now seen corresponding path program 1 times [2024-10-31 22:10:30,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:10:30,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296568560] [2024-10-31 22:10:30,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:10:30,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:10:30,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:32,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:10:32,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:10:32,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296568560] [2024-10-31 22:10:32,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296568560] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:10:32,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:10:32,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-31 22:10:32,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153072800] [2024-10-31 22:10:32,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:10:32,299 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-31 22:10:32,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:10:32,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-31 22:10:32,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-31 22:10:32,306 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 45 [2024-10-31 22:10:32,309 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 40 transitions, 140 flow. Second operand has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 7 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:10:32,309 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:10:32,309 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 45 [2024-10-31 22:10:32,310 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:10:34,785 INFO L124 PetriNetUnfolderBase]: 5227/8538 cut-off events. [2024-10-31 22:10:34,785 INFO L125 PetriNetUnfolderBase]: For 6788/6844 co-relation queries the response was YES. [2024-10-31 22:10:34,824 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19212 conditions, 8538 events. 5227/8538 cut-off events. For 6788/6844 co-relation queries the response was YES. Maximal size of possible extension queue 491. Compared 61398 event pairs, 3049 based on Foata normal form. 252/8578 useless extension candidates. Maximal degree in co-relation 19192. Up to 4951 conditions per place. [2024-10-31 22:10:34,850 INFO L140 encePairwiseOnDemand]: 39/45 looper letters, 44 selfloop transitions, 4 changer transitions 33/97 dead transitions. [2024-10-31 22:10:34,850 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 97 transitions, 443 flow [2024-10-31 22:10:34,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-31 22:10:34,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-31 22:10:34,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 227 transitions. [2024-10-31 22:10:34,852 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6305555555555555 [2024-10-31 22:10:34,852 INFO L175 Difference]: Start difference. First operand has 65 places, 40 transitions, 140 flow. Second operand 8 states and 227 transitions. [2024-10-31 22:10:34,853 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 97 transitions, 443 flow [2024-10-31 22:10:34,941 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 97 transitions, 420 flow, removed 10 selfloop flow, removed 5 redundant places. [2024-10-31 22:10:34,943 INFO L231 Difference]: Finished difference. Result has 69 places, 42 transitions, 155 flow [2024-10-31 22:10:34,943 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=125, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=155, PETRI_PLACES=69, PETRI_TRANSITIONS=42} [2024-10-31 22:10:34,944 INFO L277 CegarLoopForPetriNet]: 51 programPoint places, 18 predicate places. [2024-10-31 22:10:34,944 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 42 transitions, 155 flow [2024-10-31 22:10:34,945 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 7 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:10:34,945 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:10:34,945 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:10:34,945 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-31 22:10:34,946 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-10-31 22:10:34,946 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:10:34,946 INFO L85 PathProgramCache]: Analyzing trace with hash -1392696434, now seen corresponding path program 1 times [2024-10-31 22:10:34,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:10:34,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98871622] [2024-10-31 22:10:34,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:10:34,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:10:35,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:35,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:10:35,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:10:35,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98871622] [2024-10-31 22:10:35,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [98871622] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:10:35,191 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:10:35,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:10:35,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811522532] [2024-10-31 22:10:35,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:10:35,192 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:10:35,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:10:35,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:10:35,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:10:35,201 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 45 [2024-10-31 22:10:35,202 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 42 transitions, 155 flow. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:10:35,202 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:10:35,202 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 45 [2024-10-31 22:10:35,202 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:10:39,021 INFO L124 PetriNetUnfolderBase]: 14351/20803 cut-off events. [2024-10-31 22:10:39,021 INFO L125 PetriNetUnfolderBase]: For 9140/9206 co-relation queries the response was YES. [2024-10-31 22:10:39,134 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48516 conditions, 20803 events. 14351/20803 cut-off events. For 9140/9206 co-relation queries the response was YES. Maximal size of possible extension queue 922. Compared 135848 event pairs, 2005 based on Foata normal form. 715/21377 useless extension candidates. Maximal degree in co-relation 48493. Up to 11540 conditions per place.