./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe009_rmo.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 30e01a73 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a24c78d9-bd29-4cb7-9eed-8faeca7c7434/bin/uautomizer-verify-zZY32mL2XJ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a24c78d9-bd29-4cb7-9eed-8faeca7c7434/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_a24c78d9-bd29-4cb7-9eed-8faeca7c7434/bin/uautomizer-verify-zZY32mL2XJ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a24c78d9-bd29-4cb7-9eed-8faeca7c7434/bin/uautomizer-verify-zZY32mL2XJ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe009_rmo.oepc.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a24c78d9-bd29-4cb7-9eed-8faeca7c7434/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_a24c78d9-bd29-4cb7-9eed-8faeca7c7434/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 d4dfc0bbdb080812f042fcb42d1e3b37e9e0d49ae456458f71f0b25bb99756b4 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 22:28:34,217 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 22:28:34,294 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a24c78d9-bd29-4cb7-9eed-8faeca7c7434/bin/uautomizer-verify-zZY32mL2XJ/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-23 22:28:34,300 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 22:28:34,300 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 22:28:34,326 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 22:28:34,327 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 22:28:34,327 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 22:28:34,328 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-23 22:28:34,329 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-23 22:28:34,329 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 22:28:34,330 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 22:28:34,331 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 22:28:34,331 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 22:28:34,332 INFO L153 SettingsManager]: * Use SBE=true [2023-11-23 22:28:34,333 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 22:28:34,333 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 22:28:34,334 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 22:28:34,334 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 22:28:34,335 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 22:28:34,335 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 22:28:34,336 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 22:28:34,336 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 22:28:34,337 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 22:28:34,337 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 22:28:34,337 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 22:28:34,338 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 22:28:34,338 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 22:28:34,339 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 22:28:34,339 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 22:28:34,340 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 22:28:34,340 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 22:28:34,340 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 22:28:34,341 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 22:28:34,341 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 22:28:34,341 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-23 22:28:34,341 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 22:28:34,342 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 22:28:34,342 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-23 22:28:34,342 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 22:28:34,342 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-23 22:28:34,343 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 22:28:34,343 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_a24c78d9-bd29-4cb7-9eed-8faeca7c7434/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a24c78d9-bd29-4cb7-9eed-8faeca7c7434/bin/uautomizer-verify-zZY32mL2XJ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d4dfc0bbdb080812f042fcb42d1e3b37e9e0d49ae456458f71f0b25bb99756b4 [2023-11-23 22:28:34,634 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 22:28:34,656 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 22:28:34,659 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 22:28:34,661 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 22:28:34,662 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 22:28:34,663 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a24c78d9-bd29-4cb7-9eed-8faeca7c7434/bin/uautomizer-verify-zZY32mL2XJ/../../sv-benchmarks/c/pthread-wmm/safe009_rmo.oepc.i [2023-11-23 22:28:37,776 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 22:28:38,201 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 22:28:38,202 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a24c78d9-bd29-4cb7-9eed-8faeca7c7434/sv-benchmarks/c/pthread-wmm/safe009_rmo.oepc.i [2023-11-23 22:28:38,223 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a24c78d9-bd29-4cb7-9eed-8faeca7c7434/bin/uautomizer-verify-zZY32mL2XJ/data/9f4547393/f84243fce8e44fdc8dce227333a7c4b7/FLAGcb498caf1 [2023-11-23 22:28:38,239 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a24c78d9-bd29-4cb7-9eed-8faeca7c7434/bin/uautomizer-verify-zZY32mL2XJ/data/9f4547393/f84243fce8e44fdc8dce227333a7c4b7 [2023-11-23 22:28:38,243 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 22:28:38,245 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 22:28:38,246 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 22:28:38,247 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 22:28:38,253 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 22:28:38,254 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:28:38" (1/1) ... [2023-11-23 22:28:38,255 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7762d61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:28:38, skipping insertion in model container [2023-11-23 22:28:38,256 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:28:38" (1/1) ... [2023-11-23 22:28:38,312 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 22:28:38,528 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_a24c78d9-bd29-4cb7-9eed-8faeca7c7434/sv-benchmarks/c/pthread-wmm/safe009_rmo.oepc.i[993,1006] [2023-11-23 22:28:38,890 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 22:28:38,910 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 22:28:38,927 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_a24c78d9-bd29-4cb7-9eed-8faeca7c7434/sv-benchmarks/c/pthread-wmm/safe009_rmo.oepc.i[993,1006] [2023-11-23 22:28:38,985 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 22:28:39,082 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 22:28:39,082 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 22:28:39,091 INFO L206 MainTranslator]: Completed translation [2023-11-23 22:28:39,091 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:28:39 WrapperNode [2023-11-23 22:28:39,092 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 22:28:39,093 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 22:28:39,093 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 22:28:39,093 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 22:28:39,101 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:28:39" (1/1) ... [2023-11-23 22:28:39,146 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:28:39" (1/1) ... [2023-11-23 22:28:39,203 INFO L138 Inliner]: procedures = 176, calls = 74, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 168 [2023-11-23 22:28:39,205 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 22:28:39,206 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 22:28:39,206 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 22:28:39,206 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 22:28:39,218 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:28:39" (1/1) ... [2023-11-23 22:28:39,218 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:28:39" (1/1) ... [2023-11-23 22:28:39,239 INFO L184 PluginConnector]: Executing the observer HeapSplitter from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:28:39" (1/1) ... [2023-11-23 22:28:39,271 INFO L189 HeapSplitter]: Split 27 memory accesses to 5 slices as follows [2, 1, 1, 22, 1] [2023-11-23 22:28:39,278 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:28:39" (1/1) ... [2023-11-23 22:28:39,279 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:28:39" (1/1) ... [2023-11-23 22:28:39,294 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:28:39" (1/1) ... [2023-11-23 22:28:39,302 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:28:39" (1/1) ... [2023-11-23 22:28:39,312 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:28:39" (1/1) ... [2023-11-23 22:28:39,314 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:28:39" (1/1) ... [2023-11-23 22:28:39,326 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 22:28:39,327 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 22:28:39,328 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 22:28:39,328 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 22:28:39,329 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:28:39" (1/1) ... [2023-11-23 22:28:39,335 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 22:28:39,350 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a24c78d9-bd29-4cb7-9eed-8faeca7c7434/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:28:39,363 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a24c78d9-bd29-4cb7-9eed-8faeca7c7434/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 22:28:39,396 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a24c78d9-bd29-4cb7-9eed-8faeca7c7434/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 22:28:39,407 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-23 22:28:39,408 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-23 22:28:39,408 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-23 22:28:39,408 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-23 22:28:39,409 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-23 22:28:39,409 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-23 22:28:39,409 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-23 22:28:39,410 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-23 22:28:39,410 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-23 22:28:39,410 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-23 22:28:39,410 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-23 22:28:39,411 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 22:28:39,411 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 22:28:39,411 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 22:28:39,411 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-23 22:28:39,412 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-23 22:28:39,412 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-23 22:28:39,412 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-23 22:28:39,412 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-23 22:28:39,413 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-23 22:28:39,413 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-23 22:28:39,413 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-23 22:28:39,413 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-23 22:28:39,414 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-23 22:28:39,414 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-23 22:28:39,414 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-23 22:28:39,414 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 22:28:39,415 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 22:28:39,416 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 22:28:39,624 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 22:28:39,626 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 22:28:40,117 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 22:28:40,541 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 22:28:40,541 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-23 22:28:40,541 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:28:40 BoogieIcfgContainer [2023-11-23 22:28:40,542 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 22:28:40,545 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 22:28:40,545 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 22:28:40,548 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 22:28:40,549 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 10:28:38" (1/3) ... [2023-11-23 22:28:40,550 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56b4309d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:28:40, skipping insertion in model container [2023-11-23 22:28:40,550 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:28:39" (2/3) ... [2023-11-23 22:28:40,551 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56b4309d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:28:40, skipping insertion in model container [2023-11-23 22:28:40,551 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:28:40" (3/3) ... [2023-11-23 22:28:40,553 INFO L112 eAbstractionObserver]: Analyzing ICFG safe009_rmo.oepc.i [2023-11-23 22:28:40,562 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-23 22:28:40,573 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 22:28:40,573 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 22:28:40,573 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-23 22:28:40,670 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-23 22:28:40,715 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 46 places, 37 transitions, 86 flow [2023-11-23 22:28:40,781 INFO L124 PetriNetUnfolderBase]: 1/34 cut-off events. [2023-11-23 22:28:40,781 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-23 22:28:40,800 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44 conditions, 34 events. 1/34 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 56 event pairs, 0 based on Foata normal form. 0/32 useless extension candidates. Maximal degree in co-relation 36. Up to 2 conditions per place. [2023-11-23 22:28:40,800 INFO L82 GeneralOperation]: Start removeDead. Operand has 46 places, 37 transitions, 86 flow [2023-11-23 22:28:40,804 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 41 places, 31 transitions, 71 flow [2023-11-23 22:28:40,830 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 22:28:40,861 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;@7d0d87ce, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 22:28:40,861 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-11-23 22:28:40,895 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-23 22:28:40,895 INFO L124 PetriNetUnfolderBase]: 0/30 cut-off events. [2023-11-23 22:28:40,895 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-23 22:28:40,895 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 22:28:40,896 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:28:40,896 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 22:28:40,902 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:28:40,902 INFO L85 PathProgramCache]: Analyzing trace with hash 1521490644, now seen corresponding path program 1 times [2023-11-23 22:28:40,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:28:40,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171101201] [2023-11-23 22:28:40,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:28:40,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:28:41,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:28:41,983 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 22:28:41,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:28:41,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171101201] [2023-11-23 22:28:41,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171101201] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:28:41,985 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:28:41,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 22:28:41,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502852451] [2023-11-23 22:28:41,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:28:42,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 22:28:42,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:28:42,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 22:28:42,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 22:28:42,055 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 37 [2023-11-23 22:28:42,058 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 31 transitions, 71 flow. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 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 22:28:42,058 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 22:28:42,059 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 37 [2023-11-23 22:28:42,060 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 22:28:42,940 INFO L124 PetriNetUnfolderBase]: 1051/1743 cut-off events. [2023-11-23 22:28:42,940 INFO L125 PetriNetUnfolderBase]: For 12/12 co-relation queries the response was YES. [2023-11-23 22:28:42,948 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3378 conditions, 1743 events. 1051/1743 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 10589 event pairs, 173 based on Foata normal form. 60/1796 useless extension candidates. Maximal degree in co-relation 3367. Up to 1129 conditions per place. [2023-11-23 22:28:42,961 INFO L140 encePairwiseOnDemand]: 32/37 looper letters, 29 selfloop transitions, 2 changer transitions 31/72 dead transitions. [2023-11-23 22:28:42,962 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 72 transitions, 280 flow [2023-11-23 22:28:42,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-23 22:28:42,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-23 22:28:42,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 155 transitions. [2023-11-23 22:28:42,977 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5984555984555985 [2023-11-23 22:28:42,978 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 155 transitions. [2023-11-23 22:28:42,978 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 155 transitions. [2023-11-23 22:28:42,980 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 22:28:42,983 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 155 transitions. [2023-11-23 22:28:42,986 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 22.142857142857142) internal successors, (155), 7 states have internal predecessors, (155), 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 22:28:42,991 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 37.0) internal successors, (296), 8 states have internal predecessors, (296), 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 22:28:42,991 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 37.0) internal successors, (296), 8 states have internal predecessors, (296), 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 22:28:42,993 INFO L175 Difference]: Start difference. First operand has 41 places, 31 transitions, 71 flow. Second operand 7 states and 155 transitions. [2023-11-23 22:28:42,995 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 72 transitions, 280 flow [2023-11-23 22:28:42,998 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 72 transitions, 276 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-23 22:28:43,001 INFO L231 Difference]: Finished difference. Result has 49 places, 31 transitions, 84 flow [2023-11-23 22:28:43,003 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=84, PETRI_PLACES=49, PETRI_TRANSITIONS=31} [2023-11-23 22:28:43,007 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 8 predicate places. [2023-11-23 22:28:43,008 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 31 transitions, 84 flow [2023-11-23 22:28:43,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 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 22:28:43,008 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 22:28:43,008 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:28:43,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 22:28:43,009 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 22:28:43,010 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:28:43,010 INFO L85 PathProgramCache]: Analyzing trace with hash -1845812011, now seen corresponding path program 1 times [2023-11-23 22:28:43,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:28:43,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998924256] [2023-11-23 22:28:43,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:28:43,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:28:43,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:28:43,483 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 22:28:43,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:28:43,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998924256] [2023-11-23 22:28:43,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1998924256] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:28:43,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:28:43,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 22:28:43,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872885621] [2023-11-23 22:28:43,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:28:43,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 22:28:43,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:28:43,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 22:28:43,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-23 22:28:43,498 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 37 [2023-11-23 22:28:43,498 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 31 transitions, 84 flow. Second operand has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 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 22:28:43,498 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 22:28:43,499 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 37 [2023-11-23 22:28:43,499 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 22:28:44,482 INFO L124 PetriNetUnfolderBase]: 1449/2499 cut-off events. [2023-11-23 22:28:44,482 INFO L125 PetriNetUnfolderBase]: For 320/320 co-relation queries the response was YES. [2023-11-23 22:28:44,491 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5256 conditions, 2499 events. 1449/2499 cut-off events. For 320/320 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 15991 event pairs, 389 based on Foata normal form. 64/2550 useless extension candidates. Maximal degree in co-relation 5241. Up to 713 conditions per place. [2023-11-23 22:28:44,501 INFO L140 encePairwiseOnDemand]: 31/37 looper letters, 38 selfloop transitions, 3 changer transitions 41/91 dead transitions. [2023-11-23 22:28:44,501 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 91 transitions, 389 flow [2023-11-23 22:28:44,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 22:28:44,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-23 22:28:44,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 180 transitions. [2023-11-23 22:28:44,504 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6081081081081081 [2023-11-23 22:28:44,505 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 180 transitions. [2023-11-23 22:28:44,505 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 180 transitions. [2023-11-23 22:28:44,506 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 22:28:44,506 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 180 transitions. [2023-11-23 22:28:44,507 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 22.5) internal successors, (180), 8 states have internal predecessors, (180), 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 22:28:44,509 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 37.0) internal successors, (333), 9 states have internal predecessors, (333), 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 22:28:44,510 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 37.0) internal successors, (333), 9 states have internal predecessors, (333), 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 22:28:44,510 INFO L175 Difference]: Start difference. First operand has 49 places, 31 transitions, 84 flow. Second operand 8 states and 180 transitions. [2023-11-23 22:28:44,510 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 91 transitions, 389 flow [2023-11-23 22:28:44,535 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 91 transitions, 367 flow, removed 8 selfloop flow, removed 6 redundant places. [2023-11-23 22:28:44,539 INFO L231 Difference]: Finished difference. Result has 52 places, 31 transitions, 94 flow [2023-11-23 22:28:44,539 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=94, PETRI_PLACES=52, PETRI_TRANSITIONS=31} [2023-11-23 22:28:44,540 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 11 predicate places. [2023-11-23 22:28:44,541 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 31 transitions, 94 flow [2023-11-23 22:28:44,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 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 22:28:44,541 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 22:28:44,542 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:28:44,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-23 22:28:44,542 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 22:28:44,545 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:28:44,545 INFO L85 PathProgramCache]: Analyzing trace with hash 800462788, now seen corresponding path program 1 times [2023-11-23 22:28:44,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:28:44,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120423340] [2023-11-23 22:28:44,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:28:44,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:28:44,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:28:46,107 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 22:28:46,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:28:46,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120423340] [2023-11-23 22:28:46,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1120423340] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:28:46,109 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:28:46,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-23 22:28:46,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332976247] [2023-11-23 22:28:46,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:28:46,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-23 22:28:46,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:28:46,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-23 22:28:46,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-23 22:28:46,116 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 37 [2023-11-23 22:28:46,116 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 31 transitions, 94 flow. Second operand has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 7 states have internal predecessors, (111), 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 22:28:46,117 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 22:28:46,117 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 37 [2023-11-23 22:28:46,117 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 22:28:46,605 INFO L124 PetriNetUnfolderBase]: 550/976 cut-off events. [2023-11-23 22:28:46,605 INFO L125 PetriNetUnfolderBase]: For 374/378 co-relation queries the response was YES. [2023-11-23 22:28:46,609 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2174 conditions, 976 events. 550/976 cut-off events. For 374/378 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 5465 event pairs, 188 based on Foata normal form. 32/999 useless extension candidates. Maximal degree in co-relation 2157. Up to 673 conditions per place. [2023-11-23 22:28:46,616 INFO L140 encePairwiseOnDemand]: 31/37 looper letters, 26 selfloop transitions, 3 changer transitions 23/63 dead transitions. [2023-11-23 22:28:46,616 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 63 transitions, 278 flow [2023-11-23 22:28:46,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-23 22:28:46,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-23 22:28:46,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 152 transitions. [2023-11-23 22:28:46,618 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5868725868725869 [2023-11-23 22:28:46,618 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 152 transitions. [2023-11-23 22:28:46,619 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 152 transitions. [2023-11-23 22:28:46,619 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 22:28:46,619 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 152 transitions. [2023-11-23 22:28:46,620 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 21.714285714285715) internal successors, (152), 7 states have internal predecessors, (152), 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 22:28:46,621 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 37.0) internal successors, (296), 8 states have internal predecessors, (296), 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 22:28:46,622 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 37.0) internal successors, (296), 8 states have internal predecessors, (296), 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 22:28:46,623 INFO L175 Difference]: Start difference. First operand has 52 places, 31 transitions, 94 flow. Second operand 7 states and 152 transitions. [2023-11-23 22:28:46,623 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 63 transitions, 278 flow [2023-11-23 22:28:46,631 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 63 transitions, 246 flow, removed 12 selfloop flow, removed 8 redundant places. [2023-11-23 22:28:46,632 INFO L231 Difference]: Finished difference. Result has 51 places, 33 transitions, 109 flow [2023-11-23 22:28:46,633 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=109, PETRI_PLACES=51, PETRI_TRANSITIONS=33} [2023-11-23 22:28:46,633 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 10 predicate places. [2023-11-23 22:28:46,634 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 33 transitions, 109 flow [2023-11-23 22:28:46,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 7 states have internal predecessors, (111), 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 22:28:46,634 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 22:28:46,634 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] [2023-11-23 22:28:46,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-23 22:28:46,635 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 22:28:46,635 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:28:46,636 INFO L85 PathProgramCache]: Analyzing trace with hash -1042467580, now seen corresponding path program 1 times [2023-11-23 22:28:46,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:28:46,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807410703] [2023-11-23 22:28:46,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:28:46,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:28:46,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:28:47,372 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 22:28:47,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:28:47,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807410703] [2023-11-23 22:28:47,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1807410703] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:28:47,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:28:47,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 22:28:47,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499578988] [2023-11-23 22:28:47,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:28:47,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 22:28:47,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:28:47,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 22:28:47,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-23 22:28:47,383 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 37 [2023-11-23 22:28:47,384 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 33 transitions, 109 flow. Second operand has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 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 22:28:47,384 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 22:28:47,384 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 37 [2023-11-23 22:28:47,384 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 22:28:47,852 INFO L124 PetriNetUnfolderBase]: 610/1066 cut-off events. [2023-11-23 22:28:47,852 INFO L125 PetriNetUnfolderBase]: For 664/664 co-relation queries the response was YES. [2023-11-23 22:28:47,856 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2676 conditions, 1066 events. 610/1066 cut-off events. For 664/664 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 6153 event pairs, 353 based on Foata normal form. 24/1079 useless extension candidates. Maximal degree in co-relation 2660. Up to 710 conditions per place. [2023-11-23 22:28:47,864 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 27 selfloop transitions, 7 changer transitions 14/59 dead transitions. [2023-11-23 22:28:47,864 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 59 transitions, 293 flow [2023-11-23 22:28:47,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 22:28:47,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-23 22:28:47,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 131 transitions. [2023-11-23 22:28:47,866 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5900900900900901 [2023-11-23 22:28:47,866 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 131 transitions. [2023-11-23 22:28:47,866 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 131 transitions. [2023-11-23 22:28:47,867 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 22:28:47,867 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 131 transitions. [2023-11-23 22:28:47,868 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 21.833333333333332) internal successors, (131), 6 states have internal predecessors, (131), 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 22:28:47,869 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 37.0) internal successors, (259), 7 states have internal predecessors, (259), 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 22:28:47,869 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 37.0) internal successors, (259), 7 states have internal predecessors, (259), 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 22:28:47,869 INFO L175 Difference]: Start difference. First operand has 51 places, 33 transitions, 109 flow. Second operand 6 states and 131 transitions. [2023-11-23 22:28:47,869 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 59 transitions, 293 flow [2023-11-23 22:28:47,874 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 59 transitions, 280 flow, removed 5 selfloop flow, removed 3 redundant places. [2023-11-23 22:28:47,876 INFO L231 Difference]: Finished difference. Result has 52 places, 37 transitions, 150 flow [2023-11-23 22:28:47,876 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=150, PETRI_PLACES=52, PETRI_TRANSITIONS=37} [2023-11-23 22:28:47,877 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 11 predicate places. [2023-11-23 22:28:47,877 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 37 transitions, 150 flow [2023-11-23 22:28:47,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 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 22:28:47,878 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 22:28:47,878 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] [2023-11-23 22:28:47,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-23 22:28:47,878 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 22:28:47,879 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:28:47,879 INFO L85 PathProgramCache]: Analyzing trace with hash 1311877304, now seen corresponding path program 2 times [2023-11-23 22:28:47,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:28:47,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863311142] [2023-11-23 22:28:47,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:28:47,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:28:47,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:28:48,980 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 22:28:48,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:28:48,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863311142] [2023-11-23 22:28:48,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863311142] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:28:48,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:28:48,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-23 22:28:48,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436354666] [2023-11-23 22:28:48,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:28:48,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-23 22:28:48,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:28:48,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-23 22:28:48,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-23 22:28:48,993 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 37 [2023-11-23 22:28:48,993 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 37 transitions, 150 flow. Second operand has 7 states, 7 states have (on average 16.0) internal successors, (112), 7 states have internal predecessors, (112), 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 22:28:48,993 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 22:28:48,994 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 37 [2023-11-23 22:28:48,994 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 22:28:49,656 INFO L124 PetriNetUnfolderBase]: 802/1424 cut-off events. [2023-11-23 22:28:49,656 INFO L125 PetriNetUnfolderBase]: For 1228/1228 co-relation queries the response was YES. [2023-11-23 22:28:49,663 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3944 conditions, 1424 events. 802/1424 cut-off events. For 1228/1228 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 9056 event pairs, 196 based on Foata normal form. 42/1447 useless extension candidates. Maximal degree in co-relation 3926. Up to 491 conditions per place. [2023-11-23 22:28:49,670 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 36 selfloop transitions, 9 changer transitions 25/81 dead transitions. [2023-11-23 22:28:49,671 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 81 transitions, 448 flow [2023-11-23 22:28:49,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-23 22:28:49,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-23 22:28:49,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 197 transitions. [2023-11-23 22:28:49,673 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5915915915915916 [2023-11-23 22:28:49,673 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 197 transitions. [2023-11-23 22:28:49,673 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 197 transitions. [2023-11-23 22:28:49,673 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 22:28:49,673 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 197 transitions. [2023-11-23 22:28:49,674 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 21.88888888888889) internal successors, (197), 9 states have internal predecessors, (197), 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 22:28:49,675 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 37.0) internal successors, (370), 10 states have internal predecessors, (370), 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 22:28:49,676 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 37.0) internal successors, (370), 10 states have internal predecessors, (370), 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 22:28:49,676 INFO L175 Difference]: Start difference. First operand has 52 places, 37 transitions, 150 flow. Second operand 9 states and 197 transitions. [2023-11-23 22:28:49,676 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 81 transitions, 448 flow [2023-11-23 22:28:49,684 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 81 transitions, 414 flow, removed 13 selfloop flow, removed 4 redundant places. [2023-11-23 22:28:49,687 INFO L231 Difference]: Finished difference. Result has 59 places, 37 transitions, 167 flow [2023-11-23 22:28:49,687 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=167, PETRI_PLACES=59, PETRI_TRANSITIONS=37} [2023-11-23 22:28:49,690 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 18 predicate places. [2023-11-23 22:28:49,690 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 37 transitions, 167 flow [2023-11-23 22:28:49,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.0) internal successors, (112), 7 states have internal predecessors, (112), 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 22:28:49,690 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 22:28:49,691 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 22:28:49,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-23 22:28:49,691 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 22:28:49,692 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:28:49,692 INFO L85 PathProgramCache]: Analyzing trace with hash -691335773, now seen corresponding path program 1 times [2023-11-23 22:28:49,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:28:49,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022506862] [2023-11-23 22:28:49,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:28:49,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:28:49,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:28:49,942 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 22:28:49,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:28:49,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022506862] [2023-11-23 22:28:49,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1022506862] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:28:49,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:28:49,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 22:28:49,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996138357] [2023-11-23 22:28:49,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:28:49,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 22:28:49,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:28:49,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 22:28:49,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 22:28:49,953 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 37 [2023-11-23 22:28:49,953 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 37 transitions, 167 flow. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 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 22:28:49,954 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 22:28:49,954 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 37 [2023-11-23 22:28:49,954 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 22:28:50,810 INFO L124 PetriNetUnfolderBase]: 1866/3091 cut-off events. [2023-11-23 22:28:50,810 INFO L125 PetriNetUnfolderBase]: For 3636/3636 co-relation queries the response was YES. [2023-11-23 22:28:50,824 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8486 conditions, 3091 events. 1866/3091 cut-off events. For 3636/3636 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 18014 event pairs, 259 based on Foata normal form. 137/3222 useless extension candidates. Maximal degree in co-relation 8465. Up to 1723 conditions per place. [2023-11-23 22:28:50,842 INFO L140 encePairwiseOnDemand]: 31/37 looper letters, 54 selfloop transitions, 5 changer transitions 5/72 dead transitions. [2023-11-23 22:28:50,842 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 72 transitions, 471 flow [2023-11-23 22:28:50,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 22:28:50,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-23 22:28:50,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 98 transitions. [2023-11-23 22:28:50,844 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6621621621621622 [2023-11-23 22:28:50,844 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 98 transitions. [2023-11-23 22:28:50,844 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 98 transitions. [2023-11-23 22:28:50,844 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 22:28:50,844 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 98 transitions. [2023-11-23 22:28:50,845 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 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 22:28:50,846 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 37.0) internal successors, (185), 5 states have internal predecessors, (185), 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 22:28:50,846 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 37.0) internal successors, (185), 5 states have internal predecessors, (185), 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 22:28:50,846 INFO L175 Difference]: Start difference. First operand has 59 places, 37 transitions, 167 flow. Second operand 4 states and 98 transitions. [2023-11-23 22:28:50,846 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 72 transitions, 471 flow [2023-11-23 22:28:50,870 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 72 transitions, 434 flow, removed 10 selfloop flow, removed 6 redundant places. [2023-11-23 22:28:50,872 INFO L231 Difference]: Finished difference. Result has 54 places, 40 transitions, 182 flow [2023-11-23 22:28:50,872 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=182, PETRI_PLACES=54, PETRI_TRANSITIONS=40} [2023-11-23 22:28:50,873 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 13 predicate places. [2023-11-23 22:28:50,873 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 40 transitions, 182 flow [2023-11-23 22:28:50,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 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 22:28:50,874 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 22:28:50,874 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 22:28:50,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-23 22:28:50,874 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 22:28:50,875 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:28:50,875 INFO L85 PathProgramCache]: Analyzing trace with hash 750870790, now seen corresponding path program 1 times [2023-11-23 22:28:50,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:28:50,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224235410] [2023-11-23 22:28:50,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:28:50,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:28:50,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:28:51,143 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 22:28:51,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:28:51,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224235410] [2023-11-23 22:28:51,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1224235410] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:28:51,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:28:51,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 22:28:51,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332935722] [2023-11-23 22:28:51,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:28:51,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 22:28:51,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:28:51,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 22:28:51,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-23 22:28:51,160 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 37 [2023-11-23 22:28:51,161 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 40 transitions, 182 flow. Second operand has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 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 22:28:51,161 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 22:28:51,161 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 37 [2023-11-23 22:28:51,161 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 22:28:51,842 INFO L124 PetriNetUnfolderBase]: 1260/2100 cut-off events. [2023-11-23 22:28:51,843 INFO L125 PetriNetUnfolderBase]: For 2173/2173 co-relation queries the response was YES. [2023-11-23 22:28:51,853 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6107 conditions, 2100 events. 1260/2100 cut-off events. For 2173/2173 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 10993 event pairs, 100 based on Foata normal form. 120/2214 useless extension candidates. Maximal degree in co-relation 6087. Up to 849 conditions per place. [2023-11-23 22:28:51,864 INFO L140 encePairwiseOnDemand]: 31/37 looper letters, 57 selfloop transitions, 8 changer transitions 8/81 dead transitions. [2023-11-23 22:28:51,865 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 81 transitions, 521 flow [2023-11-23 22:28:51,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 22:28:51,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-23 22:28:51,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 122 transitions. [2023-11-23 22:28:51,868 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6594594594594595 [2023-11-23 22:28:51,869 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 122 transitions. [2023-11-23 22:28:51,870 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 122 transitions. [2023-11-23 22:28:51,870 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 22:28:51,870 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 122 transitions. [2023-11-23 22:28:51,871 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 24.4) internal successors, (122), 5 states have internal predecessors, (122), 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 22:28:51,872 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 37.0) internal successors, (222), 6 states have internal predecessors, (222), 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 22:28:51,872 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 37.0) internal successors, (222), 6 states have internal predecessors, (222), 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 22:28:51,873 INFO L175 Difference]: Start difference. First operand has 54 places, 40 transitions, 182 flow. Second operand 5 states and 122 transitions. [2023-11-23 22:28:51,873 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 81 transitions, 521 flow [2023-11-23 22:28:51,877 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 81 transitions, 511 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-11-23 22:28:51,880 INFO L231 Difference]: Finished difference. Result has 58 places, 41 transitions, 210 flow [2023-11-23 22:28:51,881 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=210, PETRI_PLACES=58, PETRI_TRANSITIONS=41} [2023-11-23 22:28:51,882 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 17 predicate places. [2023-11-23 22:28:51,882 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 41 transitions, 210 flow [2023-11-23 22:28:51,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 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 22:28:51,883 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 22:28:51,883 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] [2023-11-23 22:28:51,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-23 22:28:51,884 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 22:28:51,884 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:28:51,884 INFO L85 PathProgramCache]: Analyzing trace with hash -1479243077, now seen corresponding path program 1 times [2023-11-23 22:28:51,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:28:51,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891083890] [2023-11-23 22:28:51,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:28:51,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:28:51,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:28:52,225 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 22:28:52,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:28:52,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891083890] [2023-11-23 22:28:52,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [891083890] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:28:52,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:28:52,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 22:28:52,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296955899] [2023-11-23 22:28:52,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:28:52,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 22:28:52,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:28:52,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 22:28:52,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-23 22:28:52,247 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 37 [2023-11-23 22:28:52,248 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 41 transitions, 210 flow. Second operand has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 6 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:28:52,248 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 22:28:52,248 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 37 [2023-11-23 22:28:52,248 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 22:28:52,758 INFO L124 PetriNetUnfolderBase]: 685/1135 cut-off events. [2023-11-23 22:28:52,758 INFO L125 PetriNetUnfolderBase]: For 1902/1902 co-relation queries the response was YES. [2023-11-23 22:28:52,767 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3613 conditions, 1135 events. 685/1135 cut-off events. For 1902/1902 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 5060 event pairs, 53 based on Foata normal form. 64/1193 useless extension candidates. Maximal degree in co-relation 3591. Up to 432 conditions per place. [2023-11-23 22:28:52,773 INFO L140 encePairwiseOnDemand]: 31/37 looper letters, 47 selfloop transitions, 11 changer transitions 8/74 dead transitions. [2023-11-23 22:28:52,773 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 74 transitions, 480 flow [2023-11-23 22:28:52,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 22:28:52,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-23 22:28:52,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 131 transitions. [2023-11-23 22:28:52,775 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5900900900900901 [2023-11-23 22:28:52,775 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 131 transitions. [2023-11-23 22:28:52,775 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 131 transitions. [2023-11-23 22:28:52,776 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 22:28:52,776 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 131 transitions. [2023-11-23 22:28:52,776 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 21.833333333333332) internal successors, (131), 6 states have internal predecessors, (131), 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 22:28:52,779 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 37.0) internal successors, (259), 7 states have internal predecessors, (259), 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 22:28:52,779 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 37.0) internal successors, (259), 7 states have internal predecessors, (259), 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 22:28:52,780 INFO L175 Difference]: Start difference. First operand has 58 places, 41 transitions, 210 flow. Second operand 6 states and 131 transitions. [2023-11-23 22:28:52,780 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 74 transitions, 480 flow [2023-11-23 22:28:52,787 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 74 transitions, 429 flow, removed 16 selfloop flow, removed 7 redundant places. [2023-11-23 22:28:52,791 INFO L231 Difference]: Finished difference. Result has 58 places, 39 transitions, 192 flow [2023-11-23 22:28:52,791 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=192, PETRI_PLACES=58, PETRI_TRANSITIONS=39} [2023-11-23 22:28:52,794 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 17 predicate places. [2023-11-23 22:28:52,794 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 39 transitions, 192 flow [2023-11-23 22:28:52,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 6 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:28:52,795 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 22:28:52,795 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] [2023-11-23 22:28:52,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-23 22:28:52,796 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 22:28:52,796 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:28:52,796 INFO L85 PathProgramCache]: Analyzing trace with hash -546209836, now seen corresponding path program 1 times [2023-11-23 22:28:52,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:28:52,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911183870] [2023-11-23 22:28:52,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:28:52,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:28:52,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 22:28:52,912 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 22:28:53,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 22:28:53,096 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-23 22:28:53,097 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-23 22:28:53,098 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-11-23 22:28:53,100 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-11-23 22:28:53,100 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-11-23 22:28:53,100 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-11-23 22:28:53,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-23 22:28:53,101 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:28:53,107 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-23 22:28:53,107 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-23 22:28:53,197 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre17 could not be translated [2023-11-23 22:28:53,203 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre19 could not be translated [2023-11-23 22:28:53,219 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre21 could not be translated [2023-11-23 22:28:53,265 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 10:28:53 BasicIcfg [2023-11-23 22:28:53,265 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-23 22:28:53,266 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-23 22:28:53,266 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-23 22:28:53,266 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-23 22:28:53,267 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:28:40" (3/4) ... [2023-11-23 22:28:53,268 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2023-11-23 22:28:53,313 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre17 could not be translated [2023-11-23 22:28:53,318 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre19 could not be translated [2023-11-23 22:28:53,320 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre21 could not be translated [2023-11-23 22:28:53,403 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a24c78d9-bd29-4cb7-9eed-8faeca7c7434/bin/uautomizer-verify-zZY32mL2XJ/witness.graphml [2023-11-23 22:28:53,404 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-23 22:28:53,405 INFO L158 Benchmark]: Toolchain (without parser) took 15160.14ms. Allocated memory was 111.1MB in the beginning and 318.8MB in the end (delta: 207.6MB). Free memory was 66.5MB in the beginning and 172.1MB in the end (delta: -105.5MB). Peak memory consumption was 103.2MB. Max. memory is 16.1GB. [2023-11-23 22:28:53,405 INFO L158 Benchmark]: CDTParser took 0.37ms. Allocated memory is still 111.1MB. Free memory is still 83.8MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 22:28:53,405 INFO L158 Benchmark]: CACSL2BoogieTranslator took 845.88ms. Allocated memory was 111.1MB in the beginning and 140.5MB in the end (delta: 29.4MB). Free memory was 66.2MB in the beginning and 108.3MB in the end (delta: -42.1MB). Peak memory consumption was 31.3MB. Max. memory is 16.1GB. [2023-11-23 22:28:53,406 INFO L158 Benchmark]: Boogie Procedure Inliner took 112.16ms. Allocated memory is still 140.5MB. Free memory was 108.3MB in the beginning and 105.6MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 22:28:53,406 INFO L158 Benchmark]: Boogie Preprocessor took 121.07ms. Allocated memory is still 140.5MB. Free memory was 105.6MB in the beginning and 101.4MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-23 22:28:53,407 INFO L158 Benchmark]: RCFGBuilder took 1214.33ms. Allocated memory is still 140.5MB. Free memory was 101.4MB in the beginning and 61.0MB in the end (delta: 40.3MB). Peak memory consumption was 42.4MB. Max. memory is 16.1GB. [2023-11-23 22:28:53,407 INFO L158 Benchmark]: TraceAbstraction took 12720.12ms. Allocated memory was 140.5MB in the beginning and 318.8MB in the end (delta: 178.3MB). Free memory was 61.0MB in the beginning and 188.8MB in the end (delta: -127.8MB). Peak memory consumption was 50.4MB. Max. memory is 16.1GB. [2023-11-23 22:28:53,408 INFO L158 Benchmark]: Witness Printer took 138.29ms. Allocated memory is still 318.8MB. Free memory was 188.8MB in the beginning and 172.1MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-11-23 22:28:53,410 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37ms. Allocated memory is still 111.1MB. Free memory is still 83.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 845.88ms. Allocated memory was 111.1MB in the beginning and 140.5MB in the end (delta: 29.4MB). Free memory was 66.2MB in the beginning and 108.3MB in the end (delta: -42.1MB). Peak memory consumption was 31.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 112.16ms. Allocated memory is still 140.5MB. Free memory was 108.3MB in the beginning and 105.6MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 121.07ms. Allocated memory is still 140.5MB. Free memory was 105.6MB in the beginning and 101.4MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 1214.33ms. Allocated memory is still 140.5MB. Free memory was 101.4MB in the beginning and 61.0MB in the end (delta: 40.3MB). Peak memory consumption was 42.4MB. Max. memory is 16.1GB. * TraceAbstraction took 12720.12ms. Allocated memory was 140.5MB in the beginning and 318.8MB in the end (delta: 178.3MB). Free memory was 61.0MB in the beginning and 188.8MB in the end (delta: -127.8MB). Peak memory consumption was 50.4MB. Max. memory is 16.1GB. * Witness Printer took 138.29ms. Allocated memory is still 318.8MB. Free memory was 188.8MB in the beginning and 172.1MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~pre17 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~pre19 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~pre21 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~pre17 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~pre19 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~pre21 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 19]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L710] 0 int __unbuffered_cnt = 0; [L712] 0 int __unbuffered_p0_EAX = 0; [L713] 0 _Bool __unbuffered_p0_EAX$flush_delayed; [L714] 0 int __unbuffered_p0_EAX$mem_tmp; [L715] 0 _Bool __unbuffered_p0_EAX$r_buff0_thd0; [L716] 0 _Bool __unbuffered_p0_EAX$r_buff0_thd1; [L717] 0 _Bool __unbuffered_p0_EAX$r_buff0_thd2; [L718] 0 _Bool __unbuffered_p0_EAX$r_buff0_thd3; [L719] 0 _Bool __unbuffered_p0_EAX$r_buff1_thd0; [L720] 0 _Bool __unbuffered_p0_EAX$r_buff1_thd1; [L721] 0 _Bool __unbuffered_p0_EAX$r_buff1_thd2; [L722] 0 _Bool __unbuffered_p0_EAX$r_buff1_thd3; [L723] 0 _Bool __unbuffered_p0_EAX$read_delayed; [L724] 0 int *__unbuffered_p0_EAX$read_delayed_var; [L725] 0 int __unbuffered_p0_EAX$w_buff0; [L726] 0 _Bool __unbuffered_p0_EAX$w_buff0_used; [L727] 0 int __unbuffered_p0_EAX$w_buff1; [L728] 0 _Bool __unbuffered_p0_EAX$w_buff1_used; [L730] 0 int __unbuffered_p1_EAX = 0; [L731] 0 _Bool main$tmp_guard0; [L732] 0 _Bool main$tmp_guard1; [L734] 0 int x = 0; [L736] 0 int y = 0; [L736] 0 int y = 0; [L737] 0 _Bool y$flush_delayed; [L738] 0 int y$mem_tmp; [L739] 0 _Bool y$r_buff0_thd0; [L740] 0 _Bool y$r_buff0_thd1; [L741] 0 _Bool y$r_buff0_thd2; [L742] 0 _Bool y$r_buff0_thd3; [L743] 0 _Bool y$r_buff1_thd0; [L744] 0 _Bool y$r_buff1_thd1; [L745] 0 _Bool y$r_buff1_thd2; [L746] 0 _Bool y$r_buff1_thd3; [L747] 0 _Bool y$read_delayed; [L748] 0 int *y$read_delayed_var; [L749] 0 int y$w_buff0; [L750] 0 _Bool y$w_buff0_used; [L751] 0 int y$w_buff1; [L752] 0 _Bool y$w_buff1_used; [L753] 0 _Bool weak$$choice0; [L754] 0 _Bool weak$$choice1; [L755] 0 _Bool weak$$choice2; [L834] 0 pthread_t t1997; [L835] FCALL, FORK 0 pthread_create(&t1997, ((void *)0), P0, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX$flush_delayed=0, __unbuffered_p0_EAX$mem_tmp=0, __unbuffered_p0_EAX$r_buff0_thd0=0, __unbuffered_p0_EAX$r_buff0_thd1=0, __unbuffered_p0_EAX$r_buff0_thd2=0, __unbuffered_p0_EAX$r_buff0_thd3=0, __unbuffered_p0_EAX$r_buff1_thd0=0, __unbuffered_p0_EAX$r_buff1_thd1=0, __unbuffered_p0_EAX$r_buff1_thd2=0, __unbuffered_p0_EAX$r_buff1_thd3=0, __unbuffered_p0_EAX$read_delayed=0, __unbuffered_p0_EAX$read_delayed_var={0:0}, __unbuffered_p0_EAX$w_buff0=0, __unbuffered_p0_EAX$w_buff0_used=0, __unbuffered_p0_EAX$w_buff1=0, __unbuffered_p0_EAX$w_buff1_used=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, t1997={6:0}, weak$$choice0=0, weak$$choice1=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y={3:0}] [L759] 1 weak$$choice0 = __VERIFIER_nondet_bool() [L760] 1 weak$$choice2 = __VERIFIER_nondet_bool() [L761] 1 y$flush_delayed = weak$$choice2 [L762] EXPR 1 \read(y) [L762] 1 y$mem_tmp = y [L763] EXPR 1 !y$w_buff0_used || !y$r_buff0_thd1 && !y$w_buff1_used || !y$r_buff0_thd1 && !y$r_buff1_thd1 ? y : (y$w_buff0_used && y$r_buff0_thd1 ? y$w_buff0 : y$w_buff1) [L763] EXPR 1 \read(y) [L763] EXPR 1 !y$w_buff0_used || !y$r_buff0_thd1 && !y$w_buff1_used || !y$r_buff0_thd1 && !y$r_buff1_thd1 ? y : (y$w_buff0_used && y$r_buff0_thd1 ? y$w_buff0 : y$w_buff1) [L763] 1 y = !y$w_buff0_used || !y$r_buff0_thd1 && !y$w_buff1_used || !y$r_buff0_thd1 && !y$r_buff1_thd1 ? y : (y$w_buff0_used && y$r_buff0_thd1 ? y$w_buff0 : y$w_buff1) [L764] 1 y$w_buff0 = weak$$choice2 ? y$w_buff0 : (!y$w_buff0_used || !y$r_buff0_thd1 && !y$w_buff1_used || !y$r_buff0_thd1 && !y$r_buff1_thd1 ? y$w_buff0 : (y$w_buff0_used && y$r_buff0_thd1 ? y$w_buff0 : y$w_buff0)) [L765] 1 y$w_buff1 = weak$$choice2 ? y$w_buff1 : (!y$w_buff0_used || !y$r_buff0_thd1 && !y$w_buff1_used || !y$r_buff0_thd1 && !y$r_buff1_thd1 ? y$w_buff1 : (y$w_buff0_used && y$r_buff0_thd1 ? y$w_buff1 : y$w_buff1)) [L766] 1 y$w_buff0_used = weak$$choice2 ? y$w_buff0_used : (!y$w_buff0_used || !y$r_buff0_thd1 && !y$w_buff1_used || !y$r_buff0_thd1 && !y$r_buff1_thd1 ? y$w_buff0_used : (y$w_buff0_used && y$r_buff0_thd1 ? (_Bool)0 : y$w_buff0_used)) [L767] 1 y$w_buff1_used = weak$$choice2 ? y$w_buff1_used : (!y$w_buff0_used || !y$r_buff0_thd1 && !y$w_buff1_used || !y$r_buff0_thd1 && !y$r_buff1_thd1 ? y$w_buff1_used : (y$w_buff0_used && y$r_buff0_thd1 ? (_Bool)0 : (_Bool)0)) [L768] 1 y$r_buff0_thd1 = weak$$choice2 ? y$r_buff0_thd1 : (!y$w_buff0_used || !y$r_buff0_thd1 && !y$w_buff1_used || !y$r_buff0_thd1 && !y$r_buff1_thd1 ? y$r_buff0_thd1 : (y$w_buff0_used && y$r_buff0_thd1 ? (_Bool)0 : y$r_buff0_thd1)) [L769] 1 y$r_buff1_thd1 = weak$$choice2 ? y$r_buff1_thd1 : (!y$w_buff0_used || !y$r_buff0_thd1 && !y$w_buff1_used || !y$r_buff0_thd1 && !y$r_buff1_thd1 ? y$r_buff1_thd1 : (y$w_buff0_used && y$r_buff0_thd1 ? (_Bool)0 : (_Bool)0)) [L770] 1 __unbuffered_p0_EAX$read_delayed = (_Bool)1 [L771] 1 __unbuffered_p0_EAX$read_delayed_var = &y [L772] EXPR 1 \read(y) [L772] 1 __unbuffered_p0_EAX = y [L773] EXPR 1 y$flush_delayed ? y$mem_tmp : y [L773] EXPR 1 y$flush_delayed ? y$mem_tmp : y [L773] 1 y = y$flush_delayed ? y$mem_tmp : y [L774] 1 y$flush_delayed = (_Bool)0 VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX$flush_delayed=0, __unbuffered_p0_EAX$mem_tmp=0, __unbuffered_p0_EAX$r_buff0_thd0=0, __unbuffered_p0_EAX$r_buff0_thd1=0, __unbuffered_p0_EAX$r_buff0_thd2=0, __unbuffered_p0_EAX$r_buff0_thd3=0, __unbuffered_p0_EAX$r_buff1_thd0=0, __unbuffered_p0_EAX$r_buff1_thd1=0, __unbuffered_p0_EAX$r_buff1_thd2=0, __unbuffered_p0_EAX$r_buff1_thd3=0, __unbuffered_p0_EAX$read_delayed=1, __unbuffered_p0_EAX$read_delayed_var={3:0}, __unbuffered_p0_EAX$w_buff0=0, __unbuffered_p0_EAX$w_buff0_used=0, __unbuffered_p0_EAX$w_buff1=0, __unbuffered_p0_EAX$w_buff1_used=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice1=0, weak$$choice2=1, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y={3:0}] [L836] 0 pthread_t t1998; [L837] FCALL, FORK 0 pthread_create(&t1998, ((void *)0), P1, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX$flush_delayed=0, __unbuffered_p0_EAX$mem_tmp=0, __unbuffered_p0_EAX$r_buff0_thd0=0, __unbuffered_p0_EAX$r_buff0_thd1=0, __unbuffered_p0_EAX$r_buff0_thd2=0, __unbuffered_p0_EAX$r_buff0_thd3=0, __unbuffered_p0_EAX$r_buff1_thd0=0, __unbuffered_p0_EAX$r_buff1_thd1=0, __unbuffered_p0_EAX$r_buff1_thd2=0, __unbuffered_p0_EAX$r_buff1_thd3=0, __unbuffered_p0_EAX$read_delayed=1, __unbuffered_p0_EAX$read_delayed_var={3:0}, __unbuffered_p0_EAX$w_buff0=0, __unbuffered_p0_EAX$w_buff0_used=0, __unbuffered_p0_EAX$w_buff1=0, __unbuffered_p0_EAX$w_buff1_used=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, t1997={6:0}, t1998={7:0}, weak$$choice1=0, weak$$choice2=1, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y={3:0}] [L777] 1 x = 1 VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX$flush_delayed=0, __unbuffered_p0_EAX$mem_tmp=0, __unbuffered_p0_EAX$r_buff0_thd0=0, __unbuffered_p0_EAX$r_buff0_thd1=0, __unbuffered_p0_EAX$r_buff0_thd2=0, __unbuffered_p0_EAX$r_buff0_thd3=0, __unbuffered_p0_EAX$r_buff1_thd0=0, __unbuffered_p0_EAX$r_buff1_thd1=0, __unbuffered_p0_EAX$r_buff1_thd2=0, __unbuffered_p0_EAX$r_buff1_thd3=0, __unbuffered_p0_EAX$read_delayed=1, __unbuffered_p0_EAX$read_delayed_var={3:0}, __unbuffered_p0_EAX$w_buff0=0, __unbuffered_p0_EAX$w_buff0_used=0, __unbuffered_p0_EAX$w_buff1=0, __unbuffered_p0_EAX$w_buff1_used=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice1=0, weak$$choice2=1, x=1, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y={3:0}] [L789] 2 __unbuffered_p1_EAX = x VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX$flush_delayed=0, __unbuffered_p0_EAX$mem_tmp=0, __unbuffered_p0_EAX$r_buff0_thd0=0, __unbuffered_p0_EAX$r_buff0_thd1=0, __unbuffered_p0_EAX$r_buff0_thd2=0, __unbuffered_p0_EAX$r_buff0_thd3=0, __unbuffered_p0_EAX$r_buff1_thd0=0, __unbuffered_p0_EAX$r_buff1_thd1=0, __unbuffered_p0_EAX$r_buff1_thd2=0, __unbuffered_p0_EAX$r_buff1_thd3=0, __unbuffered_p0_EAX$read_delayed=1, __unbuffered_p0_EAX$read_delayed_var={3:0}, __unbuffered_p0_EAX$w_buff0=0, __unbuffered_p0_EAX$w_buff0_used=0, __unbuffered_p0_EAX$w_buff1=0, __unbuffered_p0_EAX$w_buff1_used=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice1=0, weak$$choice2=1, x=1, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y={3:0}] [L792] 2 y = 1 VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX$flush_delayed=0, __unbuffered_p0_EAX$mem_tmp=0, __unbuffered_p0_EAX$r_buff0_thd0=0, __unbuffered_p0_EAX$r_buff0_thd1=0, __unbuffered_p0_EAX$r_buff0_thd2=0, __unbuffered_p0_EAX$r_buff0_thd3=0, __unbuffered_p0_EAX$r_buff1_thd0=0, __unbuffered_p0_EAX$r_buff1_thd1=0, __unbuffered_p0_EAX$r_buff1_thd2=0, __unbuffered_p0_EAX$r_buff1_thd3=0, __unbuffered_p0_EAX$read_delayed=1, __unbuffered_p0_EAX$read_delayed_var={3:0}, __unbuffered_p0_EAX$w_buff0=0, __unbuffered_p0_EAX$w_buff0_used=0, __unbuffered_p0_EAX$w_buff1=0, __unbuffered_p0_EAX$w_buff1_used=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice1=0, weak$$choice2=1, x=1, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y={3:0}] [L838] 0 pthread_t t1999; [L839] FCALL, FORK 0 pthread_create(&t1999, ((void *)0), P2, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX$flush_delayed=0, __unbuffered_p0_EAX$mem_tmp=0, __unbuffered_p0_EAX$r_buff0_thd0=0, __unbuffered_p0_EAX$r_buff0_thd1=0, __unbuffered_p0_EAX$r_buff0_thd2=0, __unbuffered_p0_EAX$r_buff0_thd3=0, __unbuffered_p0_EAX$r_buff1_thd0=0, __unbuffered_p0_EAX$r_buff1_thd1=0, __unbuffered_p0_EAX$r_buff1_thd2=0, __unbuffered_p0_EAX$r_buff1_thd3=0, __unbuffered_p0_EAX$read_delayed=1, __unbuffered_p0_EAX$read_delayed_var={3:0}, __unbuffered_p0_EAX$w_buff0=0, __unbuffered_p0_EAX$w_buff0_used=0, __unbuffered_p0_EAX$w_buff1=0, __unbuffered_p0_EAX$w_buff1_used=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, t1997={6:0}, t1998={7:0}, t1999={5:0}, weak$$choice1=0, weak$$choice2=1, x=1, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y={3:0}] [L795] EXPR 2 y$w_buff0_used && y$r_buff0_thd2 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd2 ? y$w_buff1 : y) [L795] EXPR 2 y$w_buff1_used && y$r_buff1_thd2 ? y$w_buff1 : y [L795] EXPR 2 \read(y) [L795] EXPR 2 y$w_buff1_used && y$r_buff1_thd2 ? y$w_buff1 : y [L795] EXPR 2 y$w_buff0_used && y$r_buff0_thd2 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd2 ? y$w_buff1 : y) [L795] 2 y = y$w_buff0_used && y$r_buff0_thd2 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd2 ? y$w_buff1 : y) [L796] 2 y$w_buff0_used = y$w_buff0_used && y$r_buff0_thd2 ? (_Bool)0 : y$w_buff0_used [L797] 2 y$w_buff1_used = y$w_buff0_used && y$r_buff0_thd2 || y$w_buff1_used && y$r_buff1_thd2 ? (_Bool)0 : y$w_buff1_used [L798] 2 y$r_buff0_thd2 = y$w_buff0_used && y$r_buff0_thd2 ? (_Bool)0 : y$r_buff0_thd2 [L799] 2 y$r_buff1_thd2 = y$w_buff0_used && y$r_buff0_thd2 || y$w_buff1_used && y$r_buff1_thd2 ? (_Bool)0 : y$r_buff1_thd2 VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX$flush_delayed=0, __unbuffered_p0_EAX$mem_tmp=0, __unbuffered_p0_EAX$r_buff0_thd0=0, __unbuffered_p0_EAX$r_buff0_thd1=0, __unbuffered_p0_EAX$r_buff0_thd2=0, __unbuffered_p0_EAX$r_buff0_thd3=0, __unbuffered_p0_EAX$r_buff1_thd0=0, __unbuffered_p0_EAX$r_buff1_thd1=0, __unbuffered_p0_EAX$r_buff1_thd2=0, __unbuffered_p0_EAX$r_buff1_thd3=0, __unbuffered_p0_EAX$read_delayed=1, __unbuffered_p0_EAX$read_delayed_var={3:0}, __unbuffered_p0_EAX$w_buff0=0, __unbuffered_p0_EAX$w_buff0_used=0, __unbuffered_p0_EAX$w_buff1=0, __unbuffered_p0_EAX$w_buff1_used=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice1=0, weak$$choice2=1, x=1, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y={3:0}] [L809] 3 y = 2 VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX$flush_delayed=0, __unbuffered_p0_EAX$mem_tmp=0, __unbuffered_p0_EAX$r_buff0_thd0=0, __unbuffered_p0_EAX$r_buff0_thd1=0, __unbuffered_p0_EAX$r_buff0_thd2=0, __unbuffered_p0_EAX$r_buff0_thd3=0, __unbuffered_p0_EAX$r_buff1_thd0=0, __unbuffered_p0_EAX$r_buff1_thd1=0, __unbuffered_p0_EAX$r_buff1_thd2=0, __unbuffered_p0_EAX$r_buff1_thd3=0, __unbuffered_p0_EAX$read_delayed=1, __unbuffered_p0_EAX$read_delayed_var={3:0}, __unbuffered_p0_EAX$w_buff0=0, __unbuffered_p0_EAX$w_buff0_used=0, __unbuffered_p0_EAX$w_buff1=0, __unbuffered_p0_EAX$w_buff1_used=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice1=0, weak$$choice2=1, x=1, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y={3:0}] [L812] EXPR 3 y$w_buff0_used && y$r_buff0_thd3 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd3 ? y$w_buff1 : y) [L812] EXPR 3 y$w_buff1_used && y$r_buff1_thd3 ? y$w_buff1 : y [L812] EXPR 3 \read(y) [L812] EXPR 3 y$w_buff1_used && y$r_buff1_thd3 ? y$w_buff1 : y [L812] EXPR 3 y$w_buff0_used && y$r_buff0_thd3 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd3 ? y$w_buff1 : y) [L812] 3 y = y$w_buff0_used && y$r_buff0_thd3 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd3 ? y$w_buff1 : y) [L813] 3 y$w_buff0_used = y$w_buff0_used && y$r_buff0_thd3 ? (_Bool)0 : y$w_buff0_used [L814] 3 y$w_buff1_used = y$w_buff0_used && y$r_buff0_thd3 || y$w_buff1_used && y$r_buff1_thd3 ? (_Bool)0 : y$w_buff1_used [L815] 3 y$r_buff0_thd3 = y$w_buff0_used && y$r_buff0_thd3 ? (_Bool)0 : y$r_buff0_thd3 [L816] 3 y$r_buff1_thd3 = y$w_buff0_used && y$r_buff0_thd3 || y$w_buff1_used && y$r_buff1_thd3 ? (_Bool)0 : y$r_buff1_thd3 VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX$flush_delayed=0, __unbuffered_p0_EAX$mem_tmp=0, __unbuffered_p0_EAX$r_buff0_thd0=0, __unbuffered_p0_EAX$r_buff0_thd1=0, __unbuffered_p0_EAX$r_buff0_thd2=0, __unbuffered_p0_EAX$r_buff0_thd3=0, __unbuffered_p0_EAX$r_buff1_thd0=0, __unbuffered_p0_EAX$r_buff1_thd1=0, __unbuffered_p0_EAX$r_buff1_thd2=0, __unbuffered_p0_EAX$r_buff1_thd3=0, __unbuffered_p0_EAX$read_delayed=1, __unbuffered_p0_EAX$read_delayed_var={3:0}, __unbuffered_p0_EAX$w_buff0=0, __unbuffered_p0_EAX$w_buff0_used=0, __unbuffered_p0_EAX$w_buff1=0, __unbuffered_p0_EAX$w_buff1_used=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice1=0, weak$$choice2=1, x=1, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y={3:0}] [L782] 1 __unbuffered_cnt = __unbuffered_cnt + 1 VAL [__unbuffered_cnt=1, __unbuffered_p0_EAX$flush_delayed=0, __unbuffered_p0_EAX$mem_tmp=0, __unbuffered_p0_EAX$r_buff0_thd0=0, __unbuffered_p0_EAX$r_buff0_thd1=0, __unbuffered_p0_EAX$r_buff0_thd2=0, __unbuffered_p0_EAX$r_buff0_thd3=0, __unbuffered_p0_EAX$r_buff1_thd0=0, __unbuffered_p0_EAX$r_buff1_thd1=0, __unbuffered_p0_EAX$r_buff1_thd2=0, __unbuffered_p0_EAX$r_buff1_thd3=0, __unbuffered_p0_EAX$read_delayed=1, __unbuffered_p0_EAX$read_delayed_var={3:0}, __unbuffered_p0_EAX$w_buff0=0, __unbuffered_p0_EAX$w_buff0_used=0, __unbuffered_p0_EAX$w_buff1=0, __unbuffered_p0_EAX$w_buff1_used=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice1=0, weak$$choice2=1, x=1, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y={3:0}] [L802] 2 __unbuffered_cnt = __unbuffered_cnt + 1 VAL [__unbuffered_cnt=2, __unbuffered_p0_EAX$flush_delayed=0, __unbuffered_p0_EAX$mem_tmp=0, __unbuffered_p0_EAX$r_buff0_thd0=0, __unbuffered_p0_EAX$r_buff0_thd1=0, __unbuffered_p0_EAX$r_buff0_thd2=0, __unbuffered_p0_EAX$r_buff0_thd3=0, __unbuffered_p0_EAX$r_buff1_thd0=0, __unbuffered_p0_EAX$r_buff1_thd1=0, __unbuffered_p0_EAX$r_buff1_thd2=0, __unbuffered_p0_EAX$r_buff1_thd3=0, __unbuffered_p0_EAX$read_delayed=1, __unbuffered_p0_EAX$read_delayed_var={3:0}, __unbuffered_p0_EAX$w_buff0=0, __unbuffered_p0_EAX$w_buff0_used=0, __unbuffered_p0_EAX$w_buff1=0, __unbuffered_p0_EAX$w_buff1_used=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice1=0, weak$$choice2=1, x=1, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y={3:0}] [L819] 3 __unbuffered_cnt = __unbuffered_cnt + 1 VAL [__unbuffered_cnt=3, __unbuffered_p0_EAX$flush_delayed=0, __unbuffered_p0_EAX$mem_tmp=0, __unbuffered_p0_EAX$r_buff0_thd0=0, __unbuffered_p0_EAX$r_buff0_thd1=0, __unbuffered_p0_EAX$r_buff0_thd2=0, __unbuffered_p0_EAX$r_buff0_thd3=0, __unbuffered_p0_EAX$r_buff1_thd0=0, __unbuffered_p0_EAX$r_buff1_thd1=0, __unbuffered_p0_EAX$r_buff1_thd2=0, __unbuffered_p0_EAX$r_buff1_thd3=0, __unbuffered_p0_EAX$read_delayed=1, __unbuffered_p0_EAX$read_delayed_var={3:0}, __unbuffered_p0_EAX$w_buff0=0, __unbuffered_p0_EAX$w_buff0_used=0, __unbuffered_p0_EAX$w_buff1=0, __unbuffered_p0_EAX$w_buff1_used=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice1=0, weak$$choice2=1, x=1, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y={3:0}] [L841] 0 main$tmp_guard0 = __unbuffered_cnt == 3 VAL [__unbuffered_cnt=3, __unbuffered_p0_EAX$flush_delayed=0, __unbuffered_p0_EAX$mem_tmp=0, __unbuffered_p0_EAX$r_buff0_thd0=0, __unbuffered_p0_EAX$r_buff0_thd1=0, __unbuffered_p0_EAX$r_buff0_thd2=0, __unbuffered_p0_EAX$r_buff0_thd3=0, __unbuffered_p0_EAX$r_buff1_thd0=0, __unbuffered_p0_EAX$r_buff1_thd1=0, __unbuffered_p0_EAX$r_buff1_thd2=0, __unbuffered_p0_EAX$r_buff1_thd3=0, __unbuffered_p0_EAX$read_delayed=1, __unbuffered_p0_EAX$read_delayed_var={3:0}, __unbuffered_p0_EAX$w_buff0=0, __unbuffered_p0_EAX$w_buff0_used=0, __unbuffered_p0_EAX$w_buff1=0, __unbuffered_p0_EAX$w_buff1_used=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, t1997={6:0}, t1998={7:0}, t1999={5:0}, weak$$choice1=0, weak$$choice2=1, x=1, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y={3:0}] [L843] CALL 0 assume_abort_if_not(main$tmp_guard0) [L4] COND FALSE 0 !(!cond) [L843] RET 0 assume_abort_if_not(main$tmp_guard0) [L845] EXPR 0 y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd0 ? y$w_buff1 : y) [L845] EXPR 0 y$w_buff1_used && y$r_buff1_thd0 ? y$w_buff1 : y [L845] EXPR 0 \read(y) [L845] EXPR 0 y$w_buff1_used && y$r_buff1_thd0 ? y$w_buff1 : y [L845] EXPR 0 y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd0 ? y$w_buff1 : y) [L845] 0 y = y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : (y$w_buff1_used && y$r_buff1_thd0 ? y$w_buff1 : y) [L846] 0 y$w_buff0_used = y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$w_buff0_used [L847] 0 y$w_buff1_used = y$w_buff0_used && y$r_buff0_thd0 || y$w_buff1_used && y$r_buff1_thd0 ? (_Bool)0 : y$w_buff1_used [L848] 0 y$r_buff0_thd0 = y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$r_buff0_thd0 [L849] 0 y$r_buff1_thd0 = y$w_buff0_used && y$r_buff0_thd0 || y$w_buff1_used && y$r_buff1_thd0 ? (_Bool)0 : y$r_buff1_thd0 VAL [__unbuffered_cnt=3, __unbuffered_p0_EAX$flush_delayed=0, __unbuffered_p0_EAX$mem_tmp=0, __unbuffered_p0_EAX$r_buff0_thd0=0, __unbuffered_p0_EAX$r_buff0_thd1=0, __unbuffered_p0_EAX$r_buff0_thd2=0, __unbuffered_p0_EAX$r_buff0_thd3=0, __unbuffered_p0_EAX$r_buff1_thd0=0, __unbuffered_p0_EAX$r_buff1_thd1=0, __unbuffered_p0_EAX$r_buff1_thd2=0, __unbuffered_p0_EAX$r_buff1_thd3=0, __unbuffered_p0_EAX$read_delayed=1, __unbuffered_p0_EAX$read_delayed_var={3:0}, __unbuffered_p0_EAX$w_buff0=0, __unbuffered_p0_EAX$w_buff0_used=0, __unbuffered_p0_EAX$w_buff1=0, __unbuffered_p0_EAX$w_buff1_used=0, __unbuffered_p0_EAX=0, __unbuffered_p1_EAX=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, t1997={6:0}, t1998={7:0}, t1999={5:0}, weak$$choice1=0, weak$$choice2=1, x=1, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y={3:0}] [L852] 0 weak$$choice0 = __VERIFIER_nondet_bool() [L853] 0 weak$$choice2 = __VERIFIER_nondet_bool() [L854] 0 y$flush_delayed = weak$$choice2 [L855] EXPR 0 \read(y) [L855] 0 y$mem_tmp = y [L856] EXPR 0 !y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y : (y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : y$w_buff1) [L856] EXPR 0 \read(y) [L856] EXPR 0 !y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y : (y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : y$w_buff1) [L856] 0 y = !y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y : (y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : y$w_buff1) [L857] 0 y$w_buff0 = weak$$choice2 ? y$w_buff0 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff0 : (y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff0 : y$w_buff0)) [L858] 0 y$w_buff1 = weak$$choice2 ? y$w_buff1 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff1 : (y$w_buff0_used && y$r_buff0_thd0 ? y$w_buff1 : y$w_buff1)) [L859] 0 y$w_buff0_used = weak$$choice2 ? y$w_buff0_used : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff0_used : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$w_buff0_used)) [L860] 0 y$w_buff1_used = weak$$choice2 ? y$w_buff1_used : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$w_buff1_used : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L861] 0 y$r_buff0_thd0 = weak$$choice2 ? y$r_buff0_thd0 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$r_buff0_thd0 : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : y$r_buff0_thd0)) [L862] 0 y$r_buff1_thd0 = weak$$choice2 ? y$r_buff1_thd0 : (!y$w_buff0_used || !y$r_buff0_thd0 && !y$w_buff1_used || !y$r_buff0_thd0 && !y$r_buff1_thd0 ? y$r_buff1_thd0 : (y$w_buff0_used && y$r_buff0_thd0 ? (_Bool)0 : (_Bool)0)) [L863] 0 weak$$choice1 = __VERIFIER_nondet_bool() [L864] EXPR 0 __unbuffered_p0_EAX$read_delayed ? (weak$$choice1 ? *__unbuffered_p0_EAX$read_delayed_var : __unbuffered_p0_EAX) : __unbuffered_p0_EAX [L864] EXPR 0 weak$$choice1 ? *__unbuffered_p0_EAX$read_delayed_var : __unbuffered_p0_EAX [L864] EXPR 0 \read(*__unbuffered_p0_EAX$read_delayed_var) [L864] EXPR 0 weak$$choice1 ? *__unbuffered_p0_EAX$read_delayed_var : __unbuffered_p0_EAX [L864] EXPR 0 __unbuffered_p0_EAX$read_delayed ? (weak$$choice1 ? *__unbuffered_p0_EAX$read_delayed_var : __unbuffered_p0_EAX) : __unbuffered_p0_EAX [L864] 0 __unbuffered_p0_EAX = __unbuffered_p0_EAX$read_delayed ? (weak$$choice1 ? *__unbuffered_p0_EAX$read_delayed_var : __unbuffered_p0_EAX) : __unbuffered_p0_EAX [L865] EXPR 0 \read(y) [L865] 0 main$tmp_guard1 = !(y == 2 && __unbuffered_p0_EAX == 2 && __unbuffered_p1_EAX == 1) [L866] EXPR 0 y$flush_delayed ? y$mem_tmp : y [L866] EXPR 0 \read(y) [L866] EXPR 0 y$flush_delayed ? y$mem_tmp : y [L866] 0 y = y$flush_delayed ? y$mem_tmp : y [L867] 0 y$flush_delayed = (_Bool)0 VAL [__unbuffered_cnt=3, __unbuffered_p0_EAX$flush_delayed=0, __unbuffered_p0_EAX$mem_tmp=0, __unbuffered_p0_EAX$r_buff0_thd0=0, __unbuffered_p0_EAX$r_buff0_thd1=0, __unbuffered_p0_EAX$r_buff0_thd2=0, __unbuffered_p0_EAX$r_buff0_thd3=0, __unbuffered_p0_EAX$r_buff1_thd0=0, __unbuffered_p0_EAX$r_buff1_thd1=0, __unbuffered_p0_EAX$r_buff1_thd2=0, __unbuffered_p0_EAX$r_buff1_thd3=0, __unbuffered_p0_EAX$read_delayed=1, __unbuffered_p0_EAX$read_delayed_var={3:0}, __unbuffered_p0_EAX$w_buff0=0, __unbuffered_p0_EAX$w_buff0_used=0, __unbuffered_p0_EAX$w_buff1=0, __unbuffered_p0_EAX$w_buff1_used=0, __unbuffered_p0_EAX=2, __unbuffered_p1_EAX=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, t1997={6:0}, t1998={7:0}, t1999={5:0}, weak$$choice1=1, weak$$choice2=0, x=1, y$flush_delayed=0, y$mem_tmp=2, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y={3:0}] [L869] CALL 0 __VERIFIER_assert(main$tmp_guard1) [L19] COND TRUE 0 !expression VAL [\old(expression)=0, __unbuffered_cnt=3, __unbuffered_p0_EAX$flush_delayed=0, __unbuffered_p0_EAX$mem_tmp=0, __unbuffered_p0_EAX$r_buff0_thd0=0, __unbuffered_p0_EAX$r_buff0_thd1=0, __unbuffered_p0_EAX$r_buff0_thd2=0, __unbuffered_p0_EAX$r_buff0_thd3=0, __unbuffered_p0_EAX$r_buff1_thd0=0, __unbuffered_p0_EAX$r_buff1_thd1=0, __unbuffered_p0_EAX$r_buff1_thd2=0, __unbuffered_p0_EAX$r_buff1_thd3=0, __unbuffered_p0_EAX$read_delayed=1, __unbuffered_p0_EAX$read_delayed_var={3:0}, __unbuffered_p0_EAX$w_buff0=0, __unbuffered_p0_EAX$w_buff0_used=0, __unbuffered_p0_EAX$w_buff1=0, __unbuffered_p0_EAX$w_buff1_used=0, __unbuffered_p0_EAX=2, __unbuffered_p1_EAX=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, expression=0, main$tmp_guard0=1, main$tmp_guard1=0, weak$$choice1=1, weak$$choice2=0, x=1, y$flush_delayed=0, y$mem_tmp=2, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y={3:0}] [L19] 0 reach_error() VAL [\old(expression)=0, __unbuffered_cnt=3, __unbuffered_p0_EAX$flush_delayed=0, __unbuffered_p0_EAX$mem_tmp=0, __unbuffered_p0_EAX$r_buff0_thd0=0, __unbuffered_p0_EAX$r_buff0_thd1=0, __unbuffered_p0_EAX$r_buff0_thd2=0, __unbuffered_p0_EAX$r_buff0_thd3=0, __unbuffered_p0_EAX$r_buff1_thd0=0, __unbuffered_p0_EAX$r_buff1_thd1=0, __unbuffered_p0_EAX$r_buff1_thd2=0, __unbuffered_p0_EAX$r_buff1_thd3=0, __unbuffered_p0_EAX$read_delayed=1, __unbuffered_p0_EAX$read_delayed_var={3:0}, __unbuffered_p0_EAX$w_buff0=0, __unbuffered_p0_EAX$w_buff0_used=0, __unbuffered_p0_EAX$w_buff1=0, __unbuffered_p0_EAX$w_buff1_used=0, __unbuffered_p0_EAX=2, __unbuffered_p1_EAX=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, expression=0, main$tmp_guard0=1, main$tmp_guard1=0, weak$$choice1=1, weak$$choice2=0, x=1, y$flush_delayed=0, y$mem_tmp=2, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y={3:0}] - UnprovableResult [Line: 835]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 837]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 839]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 60 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: 12.4s, OverallIterations: 9, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 6.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 436 SdHoareTripleChecker+Valid, 1.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 419 mSDsluCounter, 54 SdHoareTripleChecker+Invalid, 1.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 39 mSDsCounter, 29 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 936 IncrementalHoareTripleChecker+Invalid, 965 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 29 mSolverCounterUnsat, 15 mSDtfsCounter, 936 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 63 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=210occurred in iteration=7, InterpolantAutomatonStates: 52, 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: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 5.0s InterpolantComputationTime, 186 NumberOfCodeBlocks, 186 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 150 ConstructedInterpolants, 0 QuantifiedInterpolants, 886 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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 RESULT: Ultimate proved your program to be incorrect! [2023-11-23 22:28:53,453 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a24c78d9-bd29-4cb7-9eed-8faeca7c7434/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 Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE