./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe013_tso.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 30e01a73 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_170ff545-81c5-4b8f-a686-eee4a9c91702/bin/uautomizer-verify-zZY32mL2XJ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_170ff545-81c5-4b8f-a686-eee4a9c91702/bin/uautomizer-verify-zZY32mL2XJ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_170ff545-81c5-4b8f-a686-eee4a9c91702/bin/uautomizer-verify-zZY32mL2XJ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_170ff545-81c5-4b8f-a686-eee4a9c91702/bin/uautomizer-verify-zZY32mL2XJ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe013_tso.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_170ff545-81c5-4b8f-a686-eee4a9c91702/bin/uautomizer-verify-zZY32mL2XJ/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_170ff545-81c5-4b8f-a686-eee4a9c91702/bin/uautomizer-verify-zZY32mL2XJ --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 0cdeed82108b12e5d5525e3abe542fd48b9a422ac7475147d5db7c8538ce4dc0 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 22:39:46,257 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 22:39:46,381 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_170ff545-81c5-4b8f-a686-eee4a9c91702/bin/uautomizer-verify-zZY32mL2XJ/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-23 22:39:46,389 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 22:39:46,390 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 22:39:46,432 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 22:39:46,433 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 22:39:46,434 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 22:39:46,435 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-23 22:39:46,440 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-23 22:39:46,441 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 22:39:46,441 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 22:39:46,442 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 22:39:46,444 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 22:39:46,445 INFO L153 SettingsManager]: * Use SBE=true [2023-11-23 22:39:46,445 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 22:39:46,446 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 22:39:46,446 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 22:39:46,447 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 22:39:46,447 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 22:39:46,448 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 22:39:46,448 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 22:39:46,462 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 22:39:46,462 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 22:39:46,462 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 22:39:46,463 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 22:39:46,463 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 22:39:46,464 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 22:39:46,465 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 22:39:46,465 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 22:39:46,467 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 22:39:46,467 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 22:39:46,468 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 22:39:46,468 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 22:39:46,468 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 22:39:46,468 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-23 22:39:46,469 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 22:39:46,469 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 22:39:46,470 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-23 22:39:46,470 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 22:39:46,470 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-23 22:39:46,470 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 22:39:46,471 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_170ff545-81c5-4b8f-a686-eee4a9c91702/bin/uautomizer-verify-zZY32mL2XJ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_170ff545-81c5-4b8f-a686-eee4a9c91702/bin/uautomizer-verify-zZY32mL2XJ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0cdeed82108b12e5d5525e3abe542fd48b9a422ac7475147d5db7c8538ce4dc0 [2023-11-23 22:39:46,814 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 22:39:46,837 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 22:39:46,842 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 22:39:46,843 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 22:39:46,844 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 22:39:46,845 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_170ff545-81c5-4b8f-a686-eee4a9c91702/bin/uautomizer-verify-zZY32mL2XJ/../../sv-benchmarks/c/pthread-wmm/safe013_tso.i [2023-11-23 22:39:50,041 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 22:39:50,295 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 22:39:50,295 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_170ff545-81c5-4b8f-a686-eee4a9c91702/sv-benchmarks/c/pthread-wmm/safe013_tso.i [2023-11-23 22:39:50,314 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_170ff545-81c5-4b8f-a686-eee4a9c91702/bin/uautomizer-verify-zZY32mL2XJ/data/0e278ae0b/b737fc34add941fb87a36a4ad46b3396/FLAG1d938ca4c [2023-11-23 22:39:50,330 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_170ff545-81c5-4b8f-a686-eee4a9c91702/bin/uautomizer-verify-zZY32mL2XJ/data/0e278ae0b/b737fc34add941fb87a36a4ad46b3396 [2023-11-23 22:39:50,333 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 22:39:50,334 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 22:39:50,336 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 22:39:50,336 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 22:39:50,341 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 22:39:50,342 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:39:50" (1/1) ... [2023-11-23 22:39:50,343 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@793c6c6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:39:50, skipping insertion in model container [2023-11-23 22:39:50,343 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:39:50" (1/1) ... [2023-11-23 22:39:50,403 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 22:39:50,624 WARN L240 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_170ff545-81c5-4b8f-a686-eee4a9c91702/sv-benchmarks/c/pthread-wmm/safe013_tso.i[945,958] [2023-11-23 22:39:50,928 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 22:39:50,947 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 22:39:50,979 WARN L240 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_170ff545-81c5-4b8f-a686-eee4a9c91702/sv-benchmarks/c/pthread-wmm/safe013_tso.i[945,958] [2023-11-23 22:39:51,042 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 22:39:51,095 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 22:39:51,095 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 22:39:51,103 INFO L206 MainTranslator]: Completed translation [2023-11-23 22:39:51,104 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:39:51 WrapperNode [2023-11-23 22:39:51,105 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 22:39:51,106 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 22:39:51,107 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 22:39:51,107 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 22:39:51,116 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:39:51" (1/1) ... [2023-11-23 22:39:51,155 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:39:51" (1/1) ... [2023-11-23 22:39:51,184 INFO L138 Inliner]: procedures = 176, calls = 55, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 70 [2023-11-23 22:39:51,185 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 22:39:51,186 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 22:39:51,186 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 22:39:51,186 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 22:39:51,199 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:39:51" (1/1) ... [2023-11-23 22:39:51,199 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:39:51" (1/1) ... [2023-11-23 22:39:51,214 INFO L184 PluginConnector]: Executing the observer HeapSplitter from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:39:51" (1/1) ... [2023-11-23 22:39:51,248 INFO L189 HeapSplitter]: Split 5 memory accesses to 4 slices as follows [2, 1, 1, 1] [2023-11-23 22:39:51,248 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:39:51" (1/1) ... [2023-11-23 22:39:51,249 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:39:51" (1/1) ... [2023-11-23 22:39:51,256 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:39:51" (1/1) ... [2023-11-23 22:39:51,264 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:39:51" (1/1) ... [2023-11-23 22:39:51,266 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:39:51" (1/1) ... [2023-11-23 22:39:51,277 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:39:51" (1/1) ... [2023-11-23 22:39:51,280 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 22:39:51,281 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 22:39:51,284 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 22:39:51,284 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 22:39:51,285 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:39:51" (1/1) ... [2023-11-23 22:39:51,292 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 22:39:51,307 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_170ff545-81c5-4b8f-a686-eee4a9c91702/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:39:51,325 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_170ff545-81c5-4b8f-a686-eee4a9c91702/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 22:39:51,328 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_170ff545-81c5-4b8f-a686-eee4a9c91702/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 22:39:51,361 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-23 22:39:51,361 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-23 22:39:51,362 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-23 22:39:51,362 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-23 22:39:51,362 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-23 22:39:51,364 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 22:39:51,364 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 22:39:51,365 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 22:39:51,365 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-23 22:39:51,365 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-23 22:39:51,366 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-23 22:39:51,366 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-23 22:39:51,367 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-23 22:39:51,367 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-23 22:39:51,367 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-23 22:39:51,367 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-23 22:39:51,368 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-23 22:39:51,368 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-23 22:39:51,368 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-23 22:39:51,368 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 22:39:51,369 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 22:39:51,370 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-23 22:39:51,513 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 22:39:51,517 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 22:39:51,704 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 22:39:51,878 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 22:39:51,882 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-23 22:39:51,882 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:39:51 BoogieIcfgContainer [2023-11-23 22:39:51,883 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 22:39:51,886 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 22:39:51,887 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 22:39:51,890 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 22:39:51,891 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 10:39:50" (1/3) ... [2023-11-23 22:39:51,891 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d8f013d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:39:51, skipping insertion in model container [2023-11-23 22:39:51,892 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:39:51" (2/3) ... [2023-11-23 22:39:51,893 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d8f013d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:39:51, skipping insertion in model container [2023-11-23 22:39:51,893 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:39:51" (3/3) ... [2023-11-23 22:39:51,895 INFO L112 eAbstractionObserver]: Analyzing ICFG safe013_tso.i [2023-11-23 22:39:51,904 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-23 22:39:51,917 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 22:39:51,917 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 22:39:51,917 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-23 22:39:51,969 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-23 22:39:52,008 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 48 places, 39 transitions, 90 flow [2023-11-23 22:39:52,046 INFO L124 PetriNetUnfolderBase]: 1/36 cut-off events. [2023-11-23 22:39:52,046 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-23 22:39:52,051 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46 conditions, 36 events. 1/36 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 68 event pairs, 0 based on Foata normal form. 0/34 useless extension candidates. Maximal degree in co-relation 38. Up to 2 conditions per place. [2023-11-23 22:39:52,051 INFO L82 GeneralOperation]: Start removeDead. Operand has 48 places, 39 transitions, 90 flow [2023-11-23 22:39:52,055 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 43 places, 33 transitions, 75 flow [2023-11-23 22:39:52,068 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 22:39:52,075 INFO L357 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, mHoare=true, 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;@3c5f631c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 22:39:52,076 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-11-23 22:39:52,091 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-23 22:39:52,091 INFO L124 PetriNetUnfolderBase]: 0/32 cut-off events. [2023-11-23 22:39:52,091 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-23 22:39:52,092 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 22:39:52,092 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:39:52,093 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-23 22:39:52,099 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:39:52,100 INFO L85 PathProgramCache]: Analyzing trace with hash -1081380207, now seen corresponding path program 1 times [2023-11-23 22:39:52,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:39:52,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224280519] [2023-11-23 22:39:52,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:39:52,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:39:52,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:52,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:39:52,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:39:52,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224280519] [2023-11-23 22:39:52,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [224280519] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:39:52,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:39:52,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 22:39:52,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283159668] [2023-11-23 22:39:52,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:39:52,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 22:39:53,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:39:53,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 22:39:53,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 22:39:53,074 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 39 [2023-11-23 22:39:53,078 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 33 transitions, 75 flow. Second operand has 5 states, 5 states have (on average 20.2) internal successors, (101), 5 states have internal predecessors, (101), 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) [2023-11-23 22:39:53,078 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 22:39:53,078 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 39 [2023-11-23 22:39:53,080 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 22:39:53,536 INFO L124 PetriNetUnfolderBase]: 598/1174 cut-off events. [2023-11-23 22:39:53,536 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2023-11-23 22:39:53,544 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2174 conditions, 1174 events. 598/1174 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 8175 event pairs, 230 based on Foata normal form. 44/1194 useless extension candidates. Maximal degree in co-relation 2163. Up to 491 conditions per place. [2023-11-23 22:39:53,554 INFO L140 encePairwiseOnDemand]: 31/39 looper letters, 27 selfloop transitions, 5 changer transitions 29/76 dead transitions. [2023-11-23 22:39:53,554 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 76 transitions, 289 flow [2023-11-23 22:39:53,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-23 22:39:53,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-23 22:39:53,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 189 transitions. [2023-11-23 22:39:53,570 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6923076923076923 [2023-11-23 22:39:53,571 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 189 transitions. [2023-11-23 22:39:53,572 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 189 transitions. [2023-11-23 22:39:53,573 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 22:39:53,576 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 189 transitions. [2023-11-23 22:39:53,580 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 27.0) internal successors, (189), 7 states have internal predecessors, (189), 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) [2023-11-23 22:39:53,585 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 39.0) internal successors, (312), 8 states have internal predecessors, (312), 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) [2023-11-23 22:39:53,585 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 39.0) internal successors, (312), 8 states have internal predecessors, (312), 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) [2023-11-23 22:39:53,588 INFO L175 Difference]: Start difference. First operand has 43 places, 33 transitions, 75 flow. Second operand 7 states and 189 transitions. [2023-11-23 22:39:53,589 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 76 transitions, 289 flow [2023-11-23 22:39:53,592 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 76 transitions, 284 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-23 22:39:53,596 INFO L231 Difference]: Finished difference. Result has 51 places, 36 transitions, 121 flow [2023-11-23 22:39:53,598 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=121, PETRI_PLACES=51, PETRI_TRANSITIONS=36} [2023-11-23 22:39:53,602 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 8 predicate places. [2023-11-23 22:39:53,603 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 36 transitions, 121 flow [2023-11-23 22:39:53,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.2) internal successors, (101), 5 states have internal predecessors, (101), 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) [2023-11-23 22:39:53,603 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 22:39:53,604 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:39:53,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 22:39:53,604 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-23 22:39:53,605 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:39:53,605 INFO L85 PathProgramCache]: Analyzing trace with hash 1258018928, now seen corresponding path program 1 times [2023-11-23 22:39:53,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:39:53,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139233578] [2023-11-23 22:39:53,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:39:53,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:39:53,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:53,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:39:53,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:39:53,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139233578] [2023-11-23 22:39:53,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [139233578] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:39:53,884 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:39:53,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 22:39:53,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653388254] [2023-11-23 22:39:53,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:39:53,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 22:39:53,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:39:53,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 22:39:53,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-23 22:39:53,922 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 39 [2023-11-23 22:39:53,922 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 36 transitions, 121 flow. Second operand has 6 states, 6 states have (on average 20.0) internal successors, (120), 6 states have internal predecessors, (120), 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) [2023-11-23 22:39:53,924 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 22:39:53,925 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 39 [2023-11-23 22:39:53,925 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 22:39:54,359 INFO L124 PetriNetUnfolderBase]: 507/1072 cut-off events. [2023-11-23 22:39:54,359 INFO L125 PetriNetUnfolderBase]: For 782/782 co-relation queries the response was YES. [2023-11-23 22:39:54,365 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2679 conditions, 1072 events. 507/1072 cut-off events. For 782/782 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 7759 event pairs, 87 based on Foata normal form. 32/1088 useless extension candidates. Maximal degree in co-relation 2664. Up to 353 conditions per place. [2023-11-23 22:39:54,375 INFO L140 encePairwiseOnDemand]: 31/39 looper letters, 28 selfloop transitions, 6 changer transitions 30/79 dead transitions. [2023-11-23 22:39:54,377 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 79 transitions, 414 flow [2023-11-23 22:39:54,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-23 22:39:54,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-23 22:39:54,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 246 transitions. [2023-11-23 22:39:54,385 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6307692307692307 [2023-11-23 22:39:54,386 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 246 transitions. [2023-11-23 22:39:54,387 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 246 transitions. [2023-11-23 22:39:54,390 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 22:39:54,392 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 246 transitions. [2023-11-23 22:39:54,396 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 24.6) internal successors, (246), 10 states have internal predecessors, (246), 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) [2023-11-23 22:39:54,400 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 39.0) internal successors, (429), 11 states have internal predecessors, (429), 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) [2023-11-23 22:39:54,400 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 39.0) internal successors, (429), 11 states have internal predecessors, (429), 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) [2023-11-23 22:39:54,401 INFO L175 Difference]: Start difference. First operand has 51 places, 36 transitions, 121 flow. Second operand 10 states and 246 transitions. [2023-11-23 22:39:54,402 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 79 transitions, 414 flow [2023-11-23 22:39:54,413 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 79 transitions, 390 flow, removed 7 selfloop flow, removed 3 redundant places. [2023-11-23 22:39:54,417 INFO L231 Difference]: Finished difference. Result has 61 places, 37 transitions, 150 flow [2023-11-23 22:39:54,418 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=150, PETRI_PLACES=61, PETRI_TRANSITIONS=37} [2023-11-23 22:39:54,424 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 18 predicate places. [2023-11-23 22:39:54,424 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 37 transitions, 150 flow [2023-11-23 22:39:54,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.0) internal successors, (120), 6 states have internal predecessors, (120), 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) [2023-11-23 22:39:54,425 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 22:39:54,425 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:39:54,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-23 22:39:54,426 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-23 22:39:54,427 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:39:54,428 INFO L85 PathProgramCache]: Analyzing trace with hash 648963506, now seen corresponding path program 1 times [2023-11-23 22:39:54,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:39:54,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613838843] [2023-11-23 22:39:54,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:39:54,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:39:54,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:54,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:39:54,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:39:54,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613838843] [2023-11-23 22:39:54,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1613838843] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:39:54,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:39:54,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 22:39:54,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087030827] [2023-11-23 22:39:54,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:39:54,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 22:39:54,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:39:54,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 22:39:54,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-23 22:39:54,674 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 39 [2023-11-23 22:39:54,675 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 37 transitions, 150 flow. Second operand has 6 states, 6 states have (on average 20.0) internal successors, (120), 6 states have internal predecessors, (120), 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) [2023-11-23 22:39:54,675 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 22:39:54,675 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 39 [2023-11-23 22:39:54,675 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 22:39:55,033 INFO L124 PetriNetUnfolderBase]: 480/1016 cut-off events. [2023-11-23 22:39:55,033 INFO L125 PetriNetUnfolderBase]: For 1947/1949 co-relation queries the response was YES. [2023-11-23 22:39:55,039 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2895 conditions, 1016 events. 480/1016 cut-off events. For 1947/1949 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 7078 event pairs, 119 based on Foata normal form. 38/1040 useless extension candidates. Maximal degree in co-relation 2873. Up to 394 conditions per place. [2023-11-23 22:39:55,046 INFO L140 encePairwiseOnDemand]: 32/39 looper letters, 30 selfloop transitions, 7 changer transitions 30/82 dead transitions. [2023-11-23 22:39:55,046 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 82 transitions, 491 flow [2023-11-23 22:39:55,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-23 22:39:55,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-23 22:39:55,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 249 transitions. [2023-11-23 22:39:55,049 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6384615384615384 [2023-11-23 22:39:55,049 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 249 transitions. [2023-11-23 22:39:55,049 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 249 transitions. [2023-11-23 22:39:55,049 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 22:39:55,050 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 249 transitions. [2023-11-23 22:39:55,051 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 24.9) internal successors, (249), 10 states have internal predecessors, (249), 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) [2023-11-23 22:39:55,052 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 39.0) internal successors, (429), 11 states have internal predecessors, (429), 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) [2023-11-23 22:39:55,053 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 39.0) internal successors, (429), 11 states have internal predecessors, (429), 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) [2023-11-23 22:39:55,053 INFO L175 Difference]: Start difference. First operand has 61 places, 37 transitions, 150 flow. Second operand 10 states and 249 transitions. [2023-11-23 22:39:55,053 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 82 transitions, 491 flow [2023-11-23 22:39:55,062 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 82 transitions, 425 flow, removed 24 selfloop flow, removed 8 redundant places. [2023-11-23 22:39:55,064 INFO L231 Difference]: Finished difference. Result has 63 places, 38 transitions, 165 flow [2023-11-23 22:39:55,064 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=127, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=165, PETRI_PLACES=63, PETRI_TRANSITIONS=38} [2023-11-23 22:39:55,065 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 20 predicate places. [2023-11-23 22:39:55,066 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 38 transitions, 165 flow [2023-11-23 22:39:55,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.0) internal successors, (120), 6 states have internal predecessors, (120), 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) [2023-11-23 22:39:55,066 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 22:39:55,066 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:39:55,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-23 22:39:55,067 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-23 22:39:55,067 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:39:55,068 INFO L85 PathProgramCache]: Analyzing trace with hash 1522584307, now seen corresponding path program 1 times [2023-11-23 22:39:55,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:39:55,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593879800] [2023-11-23 22:39:55,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:39:55,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:39:55,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:55,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:39:55,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:39:55,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593879800] [2023-11-23 22:39:55,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593879800] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:39:55,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:39:55,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 22:39:55,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228546039] [2023-11-23 22:39:55,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:39:55,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 22:39:55,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:39:55,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 22:39:55,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-23 22:39:55,287 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 39 [2023-11-23 22:39:55,288 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 38 transitions, 165 flow. Second operand has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 states have internal predecessors, (115), 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) [2023-11-23 22:39:55,292 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 22:39:55,292 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 39 [2023-11-23 22:39:55,293 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 22:39:55,806 INFO L124 PetriNetUnfolderBase]: 834/1672 cut-off events. [2023-11-23 22:39:55,806 INFO L125 PetriNetUnfolderBase]: For 3114/3116 co-relation queries the response was YES. [2023-11-23 22:39:55,816 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4797 conditions, 1672 events. 834/1672 cut-off events. For 3114/3116 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 11360 event pairs, 73 based on Foata normal form. 46/1707 useless extension candidates. Maximal degree in co-relation 4774. Up to 476 conditions per place. [2023-11-23 22:39:55,827 INFO L140 encePairwiseOnDemand]: 30/39 looper letters, 50 selfloop transitions, 18 changer transitions 46/128 dead transitions. [2023-11-23 22:39:55,827 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 128 transitions, 868 flow [2023-11-23 22:39:55,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-23 22:39:55,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-23 22:39:55,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 326 transitions. [2023-11-23 22:39:55,830 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6429980276134122 [2023-11-23 22:39:55,830 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 326 transitions. [2023-11-23 22:39:55,830 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 326 transitions. [2023-11-23 22:39:55,831 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 22:39:55,831 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 326 transitions. [2023-11-23 22:39:55,832 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 25.076923076923077) internal successors, (326), 13 states have internal predecessors, (326), 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) [2023-11-23 22:39:55,834 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 39.0) internal successors, (546), 14 states have internal predecessors, (546), 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) [2023-11-23 22:39:55,834 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 39.0) internal successors, (546), 14 states have internal predecessors, (546), 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) [2023-11-23 22:39:55,835 INFO L175 Difference]: Start difference. First operand has 63 places, 38 transitions, 165 flow. Second operand 13 states and 326 transitions. [2023-11-23 22:39:55,835 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 128 transitions, 868 flow [2023-11-23 22:39:55,848 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 128 transitions, 740 flow, removed 41 selfloop flow, removed 8 redundant places. [2023-11-23 22:39:55,850 INFO L231 Difference]: Finished difference. Result has 73 places, 51 transitions, 349 flow [2023-11-23 22:39:55,851 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=141, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=349, PETRI_PLACES=73, PETRI_TRANSITIONS=51} [2023-11-23 22:39:55,852 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 30 predicate places. [2023-11-23 22:39:55,852 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 51 transitions, 349 flow [2023-11-23 22:39:55,852 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 states have internal predecessors, (115), 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) [2023-11-23 22:39:55,853 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 22:39:55,853 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:39:55,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-23 22:39:55,853 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-23 22:39:55,854 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:39:55,854 INFO L85 PathProgramCache]: Analyzing trace with hash -1186558191, now seen corresponding path program 2 times [2023-11-23 22:39:55,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:39:55,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239098798] [2023-11-23 22:39:55,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:39:55,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:39:55,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:56,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:39:56,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:39:56,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239098798] [2023-11-23 22:39:56,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239098798] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:39:56,078 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:39:56,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-23 22:39:56,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152511470] [2023-11-23 22:39:56,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:39:56,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-23 22:39:56,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:39:56,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-23 22:39:56,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-23 22:39:56,094 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 39 [2023-11-23 22:39:56,094 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 51 transitions, 349 flow. Second operand has 7 states, 7 states have (on average 18.857142857142858) internal successors, (132), 7 states have internal predecessors, (132), 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) [2023-11-23 22:39:56,094 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 22:39:56,095 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 39 [2023-11-23 22:39:56,095 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 22:39:56,549 INFO L124 PetriNetUnfolderBase]: 905/1856 cut-off events. [2023-11-23 22:39:56,549 INFO L125 PetriNetUnfolderBase]: For 8329/8329 co-relation queries the response was YES. [2023-11-23 22:39:56,560 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6541 conditions, 1856 events. 905/1856 cut-off events. For 8329/8329 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 13401 event pairs, 129 based on Foata normal form. 45/1869 useless extension candidates. Maximal degree in co-relation 6511. Up to 486 conditions per place. [2023-11-23 22:39:56,570 INFO L140 encePairwiseOnDemand]: 30/39 looper letters, 35 selfloop transitions, 9 changer transitions 48/106 dead transitions. [2023-11-23 22:39:56,570 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 106 transitions, 940 flow [2023-11-23 22:39:56,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-23 22:39:56,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-23 22:39:56,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 225 transitions. [2023-11-23 22:39:56,573 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6410256410256411 [2023-11-23 22:39:56,573 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 225 transitions. [2023-11-23 22:39:56,573 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 225 transitions. [2023-11-23 22:39:56,573 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 22:39:56,573 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 225 transitions. [2023-11-23 22:39:56,574 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 25.0) internal successors, (225), 9 states have internal predecessors, (225), 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) [2023-11-23 22:39:56,575 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 39.0) internal successors, (390), 10 states have internal predecessors, (390), 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) [2023-11-23 22:39:56,576 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 39.0) internal successors, (390), 10 states have internal predecessors, (390), 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) [2023-11-23 22:39:56,576 INFO L175 Difference]: Start difference. First operand has 73 places, 51 transitions, 349 flow. Second operand 9 states and 225 transitions. [2023-11-23 22:39:56,576 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 106 transitions, 940 flow [2023-11-23 22:39:56,602 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 106 transitions, 826 flow, removed 57 selfloop flow, removed 6 redundant places. [2023-11-23 22:39:56,605 INFO L231 Difference]: Finished difference. Result has 73 places, 40 transitions, 239 flow [2023-11-23 22:39:56,605 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=319, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=239, PETRI_PLACES=73, PETRI_TRANSITIONS=40} [2023-11-23 22:39:56,608 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 30 predicate places. [2023-11-23 22:39:56,608 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 40 transitions, 239 flow [2023-11-23 22:39:56,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.857142857142858) internal successors, (132), 7 states have internal predecessors, (132), 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) [2023-11-23 22:39:56,609 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 22:39:56,609 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:39:56,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-23 22:39:56,609 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-23 22:39:56,611 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:39:56,611 INFO L85 PathProgramCache]: Analyzing trace with hash -764950127, now seen corresponding path program 1 times [2023-11-23 22:39:56,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:39:56,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673978589] [2023-11-23 22:39:56,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:39:56,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:39:56,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:56,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:39:56,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:39:56,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673978589] [2023-11-23 22:39:56,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673978589] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:39:56,766 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:39:56,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 22:39:56,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679189354] [2023-11-23 22:39:56,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:39:56,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 22:39:56,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:39:56,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 22:39:56,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 22:39:56,778 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 39 [2023-11-23 22:39:56,778 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 40 transitions, 239 flow. Second operand has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 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) [2023-11-23 22:39:56,779 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 22:39:56,779 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 39 [2023-11-23 22:39:56,779 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 22:39:57,064 INFO L124 PetriNetUnfolderBase]: 709/1433 cut-off events. [2023-11-23 22:39:57,064 INFO L125 PetriNetUnfolderBase]: For 1931/1986 co-relation queries the response was YES. [2023-11-23 22:39:57,074 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3577 conditions, 1433 events. 709/1433 cut-off events. For 1931/1986 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 9480 event pairs, 155 based on Foata normal form. 74/1436 useless extension candidates. Maximal degree in co-relation 3556. Up to 598 conditions per place. [2023-11-23 22:39:57,083 INFO L140 encePairwiseOnDemand]: 33/39 looper letters, 26 selfloop transitions, 5 changer transitions 0/55 dead transitions. [2023-11-23 22:39:57,083 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 55 transitions, 335 flow [2023-11-23 22:39:57,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 22:39:57,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-23 22:39:57,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 117 transitions. [2023-11-23 22:39:57,085 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.75 [2023-11-23 22:39:57,086 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 117 transitions. [2023-11-23 22:39:57,086 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 117 transitions. [2023-11-23 22:39:57,086 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 22:39:57,086 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 117 transitions. [2023-11-23 22:39:57,088 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 29.25) internal successors, (117), 4 states have internal predecessors, (117), 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) [2023-11-23 22:39:57,088 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 39.0) internal successors, (195), 5 states have internal predecessors, (195), 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) [2023-11-23 22:39:57,090 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 39.0) internal successors, (195), 5 states have internal predecessors, (195), 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) [2023-11-23 22:39:57,090 INFO L175 Difference]: Start difference. First operand has 73 places, 40 transitions, 239 flow. Second operand 4 states and 117 transitions. [2023-11-23 22:39:57,090 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 55 transitions, 335 flow [2023-11-23 22:39:57,101 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 55 transitions, 264 flow, removed 11 selfloop flow, removed 14 redundant places. [2023-11-23 22:39:57,103 INFO L231 Difference]: Finished difference. Result has 60 places, 44 transitions, 206 flow [2023-11-23 22:39:57,103 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=206, PETRI_PLACES=60, PETRI_TRANSITIONS=44} [2023-11-23 22:39:57,106 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 17 predicate places. [2023-11-23 22:39:57,107 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 44 transitions, 206 flow [2023-11-23 22:39:57,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 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) [2023-11-23 22:39:57,107 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 22:39:57,107 INFO L208 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] [2023-11-23 22:39:57,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-23 22:39:57,108 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-23 22:39:57,108 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:39:57,108 INFO L85 PathProgramCache]: Analyzing trace with hash 408323416, now seen corresponding path program 1 times [2023-11-23 22:39:57,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:39:57,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205781065] [2023-11-23 22:39:57,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:39:57,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:39:57,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:57,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:39:57,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:39:57,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205781065] [2023-11-23 22:39:57,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [205781065] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:39:57,288 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:39:57,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 22:39:57,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709360021] [2023-11-23 22:39:57,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:39:57,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 22:39:57,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:39:57,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 22:39:57,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-23 22:39:57,302 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 39 [2023-11-23 22:39:57,303 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 44 transitions, 206 flow. Second operand has 5 states, 5 states have (on average 23.2) internal successors, (116), 5 states have internal predecessors, (116), 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) [2023-11-23 22:39:57,303 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 22:39:57,303 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 39 [2023-11-23 22:39:57,303 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 22:39:57,547 INFO L124 PetriNetUnfolderBase]: 604/1214 cut-off events. [2023-11-23 22:39:57,547 INFO L125 PetriNetUnfolderBase]: For 645/906 co-relation queries the response was YES. [2023-11-23 22:39:57,553 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3115 conditions, 1214 events. 604/1214 cut-off events. For 645/906 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 7315 event pairs, 49 based on Foata normal form. 75/1235 useless extension candidates. Maximal degree in co-relation 3101. Up to 520 conditions per place. [2023-11-23 22:39:57,559 INFO L140 encePairwiseOnDemand]: 33/39 looper letters, 33 selfloop transitions, 8 changer transitions 0/65 dead transitions. [2023-11-23 22:39:57,559 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 65 transitions, 351 flow [2023-11-23 22:39:57,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 22:39:57,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-23 22:39:57,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 148 transitions. [2023-11-23 22:39:57,561 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7589743589743589 [2023-11-23 22:39:57,561 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 148 transitions. [2023-11-23 22:39:57,561 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 148 transitions. [2023-11-23 22:39:57,561 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 22:39:57,561 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 148 transitions. [2023-11-23 22:39:57,562 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 29.6) internal successors, (148), 5 states have internal predecessors, (148), 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) [2023-11-23 22:39:57,563 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 39.0) internal successors, (234), 6 states have internal predecessors, (234), 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) [2023-11-23 22:39:57,563 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 39.0) internal successors, (234), 6 states have internal predecessors, (234), 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) [2023-11-23 22:39:57,563 INFO L175 Difference]: Start difference. First operand has 60 places, 44 transitions, 206 flow. Second operand 5 states and 148 transitions. [2023-11-23 22:39:57,563 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 65 transitions, 351 flow [2023-11-23 22:39:57,567 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 65 transitions, 341 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-11-23 22:39:57,568 INFO L231 Difference]: Finished difference. Result has 64 places, 48 transitions, 251 flow [2023-11-23 22:39:57,569 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=197, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=251, PETRI_PLACES=64, PETRI_TRANSITIONS=48} [2023-11-23 22:39:57,569 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 21 predicate places. [2023-11-23 22:39:57,570 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 48 transitions, 251 flow [2023-11-23 22:39:57,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.2) internal successors, (116), 5 states have internal predecessors, (116), 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) [2023-11-23 22:39:57,570 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 22:39:57,570 INFO L208 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] [2023-11-23 22:39:57,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-23 22:39:57,571 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-23 22:39:57,571 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:39:57,571 INFO L85 PathProgramCache]: Analyzing trace with hash 918331564, now seen corresponding path program 1 times [2023-11-23 22:39:57,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:39:57,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633535244] [2023-11-23 22:39:57,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:39:57,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:39:57,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:57,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:39:57,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:39:57,711 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633535244] [2023-11-23 22:39:57,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [633535244] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:39:57,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:39:57,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 22:39:57,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492240942] [2023-11-23 22:39:57,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:39:57,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 22:39:57,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:39:57,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 22:39:57,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-23 22:39:57,718 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 39 [2023-11-23 22:39:57,719 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 48 transitions, 251 flow. Second operand has 6 states, 6 states have (on average 23.0) internal successors, (138), 6 states have internal predecessors, (138), 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) [2023-11-23 22:39:57,719 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 22:39:57,719 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 39 [2023-11-23 22:39:57,719 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 22:39:57,928 INFO L124 PetriNetUnfolderBase]: 488/930 cut-off events. [2023-11-23 22:39:57,928 INFO L125 PetriNetUnfolderBase]: For 1459/1909 co-relation queries the response was YES. [2023-11-23 22:39:57,933 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2901 conditions, 930 events. 488/930 cut-off events. For 1459/1909 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 4997 event pairs, 25 based on Foata normal form. 69/949 useless extension candidates. Maximal degree in co-relation 2886. Up to 376 conditions per place. [2023-11-23 22:39:57,938 INFO L140 encePairwiseOnDemand]: 33/39 looper letters, 32 selfloop transitions, 11 changer transitions 0/67 dead transitions. [2023-11-23 22:39:57,942 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 67 transitions, 386 flow [2023-11-23 22:39:57,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 22:39:57,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-23 22:39:57,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 171 transitions. [2023-11-23 22:39:57,944 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7307692307692307 [2023-11-23 22:39:57,944 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 171 transitions. [2023-11-23 22:39:57,944 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 171 transitions. [2023-11-23 22:39:57,945 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 22:39:57,945 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 171 transitions. [2023-11-23 22:39:57,946 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 28.5) internal successors, (171), 6 states have internal predecessors, (171), 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) [2023-11-23 22:39:57,946 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 39.0) internal successors, (273), 7 states have internal predecessors, (273), 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) [2023-11-23 22:39:57,947 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 39.0) internal successors, (273), 7 states have internal predecessors, (273), 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) [2023-11-23 22:39:57,947 INFO L175 Difference]: Start difference. First operand has 64 places, 48 transitions, 251 flow. Second operand 6 states and 171 transitions. [2023-11-23 22:39:57,947 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 67 transitions, 386 flow [2023-11-23 22:39:57,951 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 67 transitions, 364 flow, removed 6 selfloop flow, removed 3 redundant places. [2023-11-23 22:39:57,953 INFO L231 Difference]: Finished difference. Result has 68 places, 49 transitions, 274 flow [2023-11-23 22:39:57,954 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=274, PETRI_PLACES=68, PETRI_TRANSITIONS=49} [2023-11-23 22:39:57,957 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 25 predicate places. [2023-11-23 22:39:57,957 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 49 transitions, 274 flow [2023-11-23 22:39:57,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.0) internal successors, (138), 6 states have internal predecessors, (138), 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) [2023-11-23 22:39:57,957 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 22:39:57,958 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:39:57,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-23 22:39:57,958 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-23 22:39:57,958 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:39:57,959 INFO L85 PathProgramCache]: Analyzing trace with hash 1704935132, now seen corresponding path program 1 times [2023-11-23 22:39:57,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:39:57,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804479130] [2023-11-23 22:39:57,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:39:57,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:39:57,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:58,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:39:58,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:39:58,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804479130] [2023-11-23 22:39:58,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1804479130] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:39:58,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:39:58,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-23 22:39:58,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152612046] [2023-11-23 22:39:58,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:39:58,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 22:39:58,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:39:58,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 22:39:58,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-23 22:39:58,174 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 39 [2023-11-23 22:39:58,174 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 49 transitions, 274 flow. Second operand has 6 states, 6 states have (on average 20.5) internal successors, (123), 6 states have internal predecessors, (123), 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) [2023-11-23 22:39:58,174 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 22:39:58,175 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 39 [2023-11-23 22:39:58,175 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 22:39:58,448 INFO L124 PetriNetUnfolderBase]: 552/1192 cut-off events. [2023-11-23 22:39:58,449 INFO L125 PetriNetUnfolderBase]: For 2146/2339 co-relation queries the response was YES. [2023-11-23 22:39:58,457 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3557 conditions, 1192 events. 552/1192 cut-off events. For 2146/2339 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 7928 event pairs, 171 based on Foata normal form. 20/1052 useless extension candidates. Maximal degree in co-relation 3541. Up to 405 conditions per place. [2023-11-23 22:39:58,461 INFO L140 encePairwiseOnDemand]: 32/39 looper letters, 19 selfloop transitions, 4 changer transitions 22/68 dead transitions. [2023-11-23 22:39:58,461 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 68 transitions, 416 flow [2023-11-23 22:39:58,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 22:39:58,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-23 22:39:58,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 150 transitions. [2023-11-23 22:39:58,463 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6410256410256411 [2023-11-23 22:39:58,463 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 150 transitions. [2023-11-23 22:39:58,464 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 150 transitions. [2023-11-23 22:39:58,464 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 22:39:58,464 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 150 transitions. [2023-11-23 22:39:58,465 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 25.0) internal successors, (150), 6 states have internal predecessors, (150), 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) [2023-11-23 22:39:58,466 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 39.0) internal successors, (273), 7 states have internal predecessors, (273), 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) [2023-11-23 22:39:58,466 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 39.0) internal successors, (273), 7 states have internal predecessors, (273), 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) [2023-11-23 22:39:58,466 INFO L175 Difference]: Start difference. First operand has 68 places, 49 transitions, 274 flow. Second operand 6 states and 150 transitions. [2023-11-23 22:39:58,467 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 68 transitions, 416 flow [2023-11-23 22:39:58,475 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 68 transitions, 384 flow, removed 10 selfloop flow, removed 5 redundant places. [2023-11-23 22:39:58,476 INFO L231 Difference]: Finished difference. Result has 71 places, 41 transitions, 208 flow [2023-11-23 22:39:58,477 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=242, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=208, PETRI_PLACES=71, PETRI_TRANSITIONS=41} [2023-11-23 22:39:58,479 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 28 predicate places. [2023-11-23 22:39:58,479 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 41 transitions, 208 flow [2023-11-23 22:39:58,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.5) internal successors, (123), 6 states have internal predecessors, (123), 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) [2023-11-23 22:39:58,480 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 22:39:58,480 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:39:58,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-23 22:39:58,481 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-23 22:39:58,481 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:39:58,481 INFO L85 PathProgramCache]: Analyzing trace with hash 1929946388, now seen corresponding path program 2 times [2023-11-23 22:39:58,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:39:58,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091634848] [2023-11-23 22:39:58,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:39:58,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:39:58,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:58,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:39:58,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:39:58,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091634848] [2023-11-23 22:39:58,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091634848] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:39:58,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:39:58,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-23 22:39:58,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116091908] [2023-11-23 22:39:58,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:39:58,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 22:39:58,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:39:58,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 22:39:58,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-23 22:39:58,733 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 39 [2023-11-23 22:39:58,734 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 41 transitions, 208 flow. Second operand has 6 states, 6 states have (on average 22.166666666666668) internal successors, (133), 6 states have internal predecessors, (133), 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) [2023-11-23 22:39:58,734 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 22:39:58,734 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 39 [2023-11-23 22:39:58,734 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 22:39:58,870 INFO L124 PetriNetUnfolderBase]: 121/294 cut-off events. [2023-11-23 22:39:58,870 INFO L125 PetriNetUnfolderBase]: For 279/306 co-relation queries the response was YES. [2023-11-23 22:39:58,872 INFO L83 FinitePrefix]: Finished finitePrefix Result has 807 conditions, 294 events. 121/294 cut-off events. For 279/306 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1219 event pairs, 10 based on Foata normal form. 10/276 useless extension candidates. Maximal degree in co-relation 790. Up to 111 conditions per place. [2023-11-23 22:39:58,873 INFO L140 encePairwiseOnDemand]: 34/39 looper letters, 0 selfloop transitions, 0 changer transitions 51/51 dead transitions. [2023-11-23 22:39:58,873 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 51 transitions, 282 flow [2023-11-23 22:39:58,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 22:39:58,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-23 22:39:58,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 148 transitions. [2023-11-23 22:39:58,875 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6324786324786325 [2023-11-23 22:39:58,875 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 148 transitions. [2023-11-23 22:39:58,875 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 148 transitions. [2023-11-23 22:39:58,876 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 22:39:58,876 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 148 transitions. [2023-11-23 22:39:58,877 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 24.666666666666668) internal successors, (148), 6 states have internal predecessors, (148), 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) [2023-11-23 22:39:58,877 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 39.0) internal successors, (273), 7 states have internal predecessors, (273), 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) [2023-11-23 22:39:58,878 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 39.0) internal successors, (273), 7 states have internal predecessors, (273), 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) [2023-11-23 22:39:58,878 INFO L175 Difference]: Start difference. First operand has 71 places, 41 transitions, 208 flow. Second operand 6 states and 148 transitions. [2023-11-23 22:39:58,878 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 51 transitions, 282 flow [2023-11-23 22:39:58,880 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 51 transitions, 232 flow, removed 6 selfloop flow, removed 13 redundant places. [2023-11-23 22:39:58,881 INFO L231 Difference]: Finished difference. Result has 58 places, 0 transitions, 0 flow [2023-11-23 22:39:58,881 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=58, PETRI_TRANSITIONS=0} [2023-11-23 22:39:58,882 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 15 predicate places. [2023-11-23 22:39:58,882 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 0 transitions, 0 flow [2023-11-23 22:39:58,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.166666666666668) internal successors, (133), 6 states have internal predecessors, (133), 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) [2023-11-23 22:39:58,885 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-11-23 22:39:58,886 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-11-23 22:39:58,886 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-11-23 22:39:58,886 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-11-23 22:39:58,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-23 22:39:58,887 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1] [2023-11-23 22:39:58,891 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-23 22:39:58,891 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-23 22:39:58,897 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 10:39:58 BasicIcfg [2023-11-23 22:39:58,897 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-23 22:39:58,897 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-23 22:39:58,898 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-23 22:39:58,898 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-23 22:39:58,898 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:39:51" (3/4) ... [2023-11-23 22:39:58,900 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-23 22:39:58,904 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2023-11-23 22:39:58,905 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2023-11-23 22:39:58,905 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2023-11-23 22:39:58,910 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 36 nodes and edges [2023-11-23 22:39:58,910 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2023-11-23 22:39:58,911 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-11-23 22:39:58,911 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-23 22:39:58,996 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_170ff545-81c5-4b8f-a686-eee4a9c91702/bin/uautomizer-verify-zZY32mL2XJ/witness.graphml [2023-11-23 22:39:58,996 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_170ff545-81c5-4b8f-a686-eee4a9c91702/bin/uautomizer-verify-zZY32mL2XJ/witness.yml [2023-11-23 22:39:58,997 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-23 22:39:58,997 INFO L158 Benchmark]: Toolchain (without parser) took 8663.23ms. Allocated memory was 142.6MB in the beginning and 249.6MB in the end (delta: 107.0MB). Free memory was 78.1MB in the beginning and 88.4MB in the end (delta: -10.3MB). Peak memory consumption was 99.1MB. Max. memory is 16.1GB. [2023-11-23 22:39:58,998 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 113.2MB. Free memory is still 83.2MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 22:39:58,998 INFO L158 Benchmark]: CACSL2BoogieTranslator took 769.52ms. Allocated memory is still 142.6MB. Free memory was 77.9MB in the beginning and 105.9MB in the end (delta: -28.0MB). Peak memory consumption was 22.6MB. Max. memory is 16.1GB. [2023-11-23 22:39:58,999 INFO L158 Benchmark]: Boogie Procedure Inliner took 78.62ms. Allocated memory is still 142.6MB. Free memory was 105.2MB in the beginning and 103.8MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 22:39:58,999 INFO L158 Benchmark]: Boogie Preprocessor took 94.56ms. Allocated memory is still 142.6MB. Free memory was 103.8MB in the beginning and 101.0MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 22:39:59,000 INFO L158 Benchmark]: RCFGBuilder took 601.80ms. Allocated memory is still 142.6MB. Free memory was 101.0MB in the beginning and 79.3MB in the end (delta: 21.7MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-23 22:39:59,000 INFO L158 Benchmark]: TraceAbstraction took 7010.49ms. Allocated memory was 142.6MB in the beginning and 249.6MB in the end (delta: 107.0MB). Free memory was 78.6MB in the beginning and 93.7MB in the end (delta: -15.0MB). Peak memory consumption was 93.3MB. Max. memory is 16.1GB. [2023-11-23 22:39:59,001 INFO L158 Benchmark]: Witness Printer took 99.47ms. Allocated memory is still 249.6MB. Free memory was 93.7MB in the beginning and 88.4MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-11-23 22:39:59,003 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 113.2MB. Free memory is still 83.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 769.52ms. Allocated memory is still 142.6MB. Free memory was 77.9MB in the beginning and 105.9MB in the end (delta: -28.0MB). Peak memory consumption was 22.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 78.62ms. Allocated memory is still 142.6MB. Free memory was 105.2MB in the beginning and 103.8MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 94.56ms. Allocated memory is still 142.6MB. Free memory was 103.8MB in the beginning and 101.0MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 601.80ms. Allocated memory is still 142.6MB. Free memory was 101.0MB in the beginning and 79.3MB in the end (delta: 21.7MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * TraceAbstraction took 7010.49ms. Allocated memory was 142.6MB in the beginning and 249.6MB in the end (delta: 107.0MB). Free memory was 78.6MB in the beginning and 93.7MB in the end (delta: -15.0MB). Peak memory consumption was 93.3MB. Max. memory is 16.1GB. * Witness Printer took 99.47ms. Allocated memory is still 249.6MB. Free memory was 93.7MB in the beginning and 88.4MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 18]: 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 7 procedures, 64 locations, 4 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: 6.9s, OverallIterations: 10, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 4.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 464 SdHoareTripleChecker+Valid, 1.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 428 mSDsluCounter, 253 SdHoareTripleChecker+Invalid, 0.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 175 mSDsCounter, 33 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 858 IncrementalHoareTripleChecker+Invalid, 891 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 33 mSolverCounterUnsat, 78 mSDtfsCounter, 858 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 86 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=349occurred in iteration=4, InterpolantAutomatonStates: 76, 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: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.1s InterpolantComputationTime, 212 NumberOfCodeBlocks, 212 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 202 ConstructedInterpolants, 0 QuantifiedInterpolants, 872 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 0/0 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-23 22:39:59,046 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_170ff545-81c5-4b8f-a686-eee4a9c91702/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE