./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread/triangular-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4fc63b2a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53b9eff4-971c-4eed-9f08-34011f4cbea0/bin/uautomizer-verify-4GaUIPS5ZU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53b9eff4-971c-4eed-9f08-34011f4cbea0/bin/uautomizer-verify-4GaUIPS5ZU/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53b9eff4-971c-4eed-9f08-34011f4cbea0/bin/uautomizer-verify-4GaUIPS5ZU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53b9eff4-971c-4eed-9f08-34011f4cbea0/bin/uautomizer-verify-4GaUIPS5ZU/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/triangular-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53b9eff4-971c-4eed-9f08-34011f4cbea0/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53b9eff4-971c-4eed-9f08-34011f4cbea0/bin/uautomizer-verify-4GaUIPS5ZU --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9ca4ad6de5ce46f9737c47ccc55c2628eaef135acf1b94c234f6d96d13f1ccb1 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-10-31 22:05:46,247 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-31 22:05:46,347 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53b9eff4-971c-4eed-9f08-34011f4cbea0/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-31 22:05:46,354 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-31 22:05:46,354 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-31 22:05:46,397 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-31 22:05:46,398 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-31 22:05:46,399 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-31 22:05:46,400 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-31 22:05:46,401 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-31 22:05:46,402 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-31 22:05:46,402 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-31 22:05:46,403 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-31 22:05:46,403 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-31 22:05:46,404 INFO L153 SettingsManager]: * Use SBE=true [2024-10-31 22:05:46,404 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-31 22:05:46,405 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-31 22:05:46,405 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-31 22:05:46,406 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-31 22:05:46,406 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-31 22:05:46,410 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-31 22:05:46,411 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-31 22:05:46,411 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-31 22:05:46,411 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-31 22:05:46,412 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-31 22:05:46,412 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-31 22:05:46,412 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-31 22:05:46,413 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-31 22:05:46,413 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-31 22:05:46,413 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-31 22:05:46,414 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-31 22:05:46,415 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-31 22:05:46,415 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:05:46,415 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-31 22:05:46,416 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-31 22:05:46,416 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-31 22:05:46,416 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-31 22:05:46,417 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-31 22:05:46,417 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-31 22:05:46,417 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-31 22:05:46,418 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-31 22:05:46,418 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-31 22:05:46,418 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_53b9eff4-971c-4eed-9f08-34011f4cbea0/bin/uautomizer-verify-4GaUIPS5ZU/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53b9eff4-971c-4eed-9f08-34011f4cbea0/bin/uautomizer-verify-4GaUIPS5ZU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9ca4ad6de5ce46f9737c47ccc55c2628eaef135acf1b94c234f6d96d13f1ccb1 [2024-10-31 22:05:46,697 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-31 22:05:46,734 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-31 22:05:46,737 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-31 22:05:46,738 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-31 22:05:46,739 INFO L274 PluginConnector]: CDTParser initialized [2024-10-31 22:05:46,740 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53b9eff4-971c-4eed-9f08-34011f4cbea0/bin/uautomizer-verify-4GaUIPS5ZU/../../sv-benchmarks/c/pthread/triangular-2.i Unable to find full path for "g++" [2024-10-31 22:05:48,820 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-31 22:05:49,068 INFO L384 CDTParser]: Found 1 translation units. [2024-10-31 22:05:49,068 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53b9eff4-971c-4eed-9f08-34011f4cbea0/sv-benchmarks/c/pthread/triangular-2.i [2024-10-31 22:05:49,082 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53b9eff4-971c-4eed-9f08-34011f4cbea0/bin/uautomizer-verify-4GaUIPS5ZU/data/13f12f7f0/df0aecb85d204fc694694d6a5991b24b/FLAG6a97dcd28 [2024-10-31 22:05:49,103 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53b9eff4-971c-4eed-9f08-34011f4cbea0/bin/uautomizer-verify-4GaUIPS5ZU/data/13f12f7f0/df0aecb85d204fc694694d6a5991b24b [2024-10-31 22:05:49,106 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-31 22:05:49,107 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-31 22:05:49,111 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-31 22:05:49,111 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-31 22:05:49,117 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-31 22:05:49,118 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:05:49" (1/1) ... [2024-10-31 22:05:49,119 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ecb4df4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:05:49, skipping insertion in model container [2024-10-31 22:05:49,120 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:05:49" (1/1) ... [2024-10-31 22:05:49,162 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-31 22:05:49,574 WARN L251 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53b9eff4-971c-4eed-9f08-34011f4cbea0/sv-benchmarks/c/pthread/triangular-2.i[30952,30965] [2024-10-31 22:05:49,579 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:05:49,589 INFO L200 MainTranslator]: Completed pre-run [2024-10-31 22:05:49,632 WARN L251 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53b9eff4-971c-4eed-9f08-34011f4cbea0/sv-benchmarks/c/pthread/triangular-2.i[30952,30965] [2024-10-31 22:05:49,633 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:05:49,671 INFO L204 MainTranslator]: Completed translation [2024-10-31 22:05:49,672 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:05:49 WrapperNode [2024-10-31 22:05:49,672 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-31 22:05:49,674 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-31 22:05:49,674 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-31 22:05:49,674 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-31 22:05:49,682 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:05:49" (1/1) ... [2024-10-31 22:05:49,701 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:05:49" (1/1) ... [2024-10-31 22:05:49,728 INFO L138 Inliner]: procedures = 168, calls = 16, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 37 [2024-10-31 22:05:49,728 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-31 22:05:49,729 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-31 22:05:49,730 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-31 22:05:49,730 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-31 22:05:49,743 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:05:49" (1/1) ... [2024-10-31 22:05:49,743 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:05:49" (1/1) ... [2024-10-31 22:05:49,748 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:05:49" (1/1) ... [2024-10-31 22:05:49,769 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-10-31 22:05:49,771 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:05:49" (1/1) ... [2024-10-31 22:05:49,772 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:05:49" (1/1) ... [2024-10-31 22:05:49,777 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:05:49" (1/1) ... [2024-10-31 22:05:49,785 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:05:49" (1/1) ... [2024-10-31 22:05:49,790 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:05:49" (1/1) ... [2024-10-31 22:05:49,791 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:05:49" (1/1) ... [2024-10-31 22:05:49,797 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-31 22:05:49,798 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-31 22:05:49,798 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-31 22:05:49,798 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-31 22:05:49,799 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:05:49" (1/1) ... [2024-10-31 22:05:49,810 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:05:49,823 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53b9eff4-971c-4eed-9f08-34011f4cbea0/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:05:49,840 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53b9eff4-971c-4eed-9f08-34011f4cbea0/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-31 22:05:49,845 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53b9eff4-971c-4eed-9f08-34011f4cbea0/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-31 22:05:49,880 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2024-10-31 22:05:49,880 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2024-10-31 22:05:49,880 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2024-10-31 22:05:49,881 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2024-10-31 22:05:49,881 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-31 22:05:49,881 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-31 22:05:49,881 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-31 22:05:49,882 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-31 22:05:49,882 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-31 22:05:49,882 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-31 22:05:49,884 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-31 22:05:50,019 INFO L238 CfgBuilder]: Building ICFG [2024-10-31 22:05:50,027 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-31 22:05:50,195 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-31 22:05:50,195 INFO L287 CfgBuilder]: Performing block encoding [2024-10-31 22:05:50,314 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-31 22:05:50,318 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-10-31 22:05:50,318 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:05:50 BoogieIcfgContainer [2024-10-31 22:05:50,319 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-31 22:05:50,321 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-31 22:05:50,322 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-31 22:05:50,326 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-31 22:05:50,326 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.10 10:05:49" (1/3) ... [2024-10-31 22:05:50,327 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6799c140 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:05:50, skipping insertion in model container [2024-10-31 22:05:50,327 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:05:49" (2/3) ... [2024-10-31 22:05:50,351 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6799c140 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:05:50, skipping insertion in model container [2024-10-31 22:05:50,351 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:05:50" (3/3) ... [2024-10-31 22:05:50,353 INFO L112 eAbstractionObserver]: Analyzing ICFG triangular-2.i [2024-10-31 22:05:50,371 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-31 22:05:50,371 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-31 22:05:50,371 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-31 22:05:50,427 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-31 22:05:50,463 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 28 places, 24 transitions, 56 flow [2024-10-31 22:05:50,488 INFO L124 PetriNetUnfolderBase]: 3/22 cut-off events. [2024-10-31 22:05:50,489 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-31 22:05:50,492 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29 conditions, 22 events. 3/22 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 30 event pairs, 0 based on Foata normal form. 0/18 useless extension candidates. Maximal degree in co-relation 22. Up to 2 conditions per place. [2024-10-31 22:05:50,492 INFO L82 GeneralOperation]: Start removeDead. Operand has 28 places, 24 transitions, 56 flow [2024-10-31 22:05:50,495 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 26 places, 22 transitions, 50 flow [2024-10-31 22:05:50,505 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 22:05:50,511 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@7118978e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 22:05:50,511 INFO L334 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-10-31 22:05:50,521 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-31 22:05:50,521 INFO L124 PetriNetUnfolderBase]: 3/20 cut-off events. [2024-10-31 22:05:50,521 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-31 22:05:50,522 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:05:50,522 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:05:50,523 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-31 22:05:50,529 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:05:50,529 INFO L85 PathProgramCache]: Analyzing trace with hash 762204344, now seen corresponding path program 1 times [2024-10-31 22:05:50,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:05:50,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728220555] [2024-10-31 22:05:50,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:05:50,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:05:50,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:05:51,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:05:51,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:05:51,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728220555] [2024-10-31 22:05:51,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [728220555] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:05:51,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:05:51,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-31 22:05:51,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753709764] [2024-10-31 22:05:51,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:05:51,082 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 22:05:51,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:05:51,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 22:05:51,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-31 22:05:51,159 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-10-31 22:05:51,162 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 22 transitions, 50 flow. Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:05:51,162 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:05:51,162 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-10-31 22:05:51,165 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:05:51,470 INFO L124 PetriNetUnfolderBase]: 321/543 cut-off events. [2024-10-31 22:05:51,471 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-31 22:05:51,474 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1055 conditions, 543 events. 321/543 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2179 event pairs, 62 based on Foata normal form. 12/542 useless extension candidates. Maximal degree in co-relation 1045. Up to 221 conditions per place. [2024-10-31 22:05:51,477 INFO L140 encePairwiseOnDemand]: 16/24 looper letters, 25 selfloop transitions, 4 changer transitions 22/54 dead transitions. [2024-10-31 22:05:51,477 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 54 transitions, 216 flow [2024-10-31 22:05:51,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-31 22:05:51,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-31 22:05:51,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 84 transitions. [2024-10-31 22:05:51,494 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2024-10-31 22:05:51,497 INFO L175 Difference]: Start difference. First operand has 26 places, 22 transitions, 50 flow. Second operand 6 states and 84 transitions. [2024-10-31 22:05:51,498 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 54 transitions, 216 flow [2024-10-31 22:05:51,501 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 54 transitions, 214 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-31 22:05:51,506 INFO L231 Difference]: Finished difference. Result has 33 places, 22 transitions, 71 flow [2024-10-31 22:05:51,508 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=71, PETRI_PLACES=33, PETRI_TRANSITIONS=22} [2024-10-31 22:05:51,514 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 7 predicate places. [2024-10-31 22:05:51,515 INFO L471 AbstractCegarLoop]: Abstraction has has 33 places, 22 transitions, 71 flow [2024-10-31 22:05:51,515 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:05:51,516 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:05:51,516 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:05:51,516 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-31 22:05:51,516 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-31 22:05:51,517 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:05:51,519 INFO L85 PathProgramCache]: Analyzing trace with hash 1754207660, now seen corresponding path program 1 times [2024-10-31 22:05:51,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:05:51,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605607754] [2024-10-31 22:05:51,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:05:51,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:05:51,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:05:51,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:05:51,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:05:51,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605607754] [2024-10-31 22:05:51,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605607754] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:05:51,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:05:51,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-31 22:05:51,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793633561] [2024-10-31 22:05:51,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:05:51,766 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-31 22:05:51,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:05:51,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-31 22:05:51,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-31 22:05:51,800 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-10-31 22:05:51,800 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 22 transitions, 71 flow. Second operand has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:05:51,800 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:05:51,800 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-10-31 22:05:51,801 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:05:52,166 INFO L124 PetriNetUnfolderBase]: 382/689 cut-off events. [2024-10-31 22:05:52,166 INFO L125 PetriNetUnfolderBase]: For 285/291 co-relation queries the response was YES. [2024-10-31 22:05:52,171 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1586 conditions, 689 events. 382/689 cut-off events. For 285/291 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 2915 event pairs, 65 based on Foata normal form. 33/721 useless extension candidates. Maximal degree in co-relation 1572. Up to 246 conditions per place. [2024-10-31 22:05:52,178 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 46 selfloop transitions, 9 changer transitions 20/78 dead transitions. [2024-10-31 22:05:52,178 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 78 transitions, 379 flow [2024-10-31 22:05:52,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-31 22:05:52,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-31 22:05:52,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 117 transitions. [2024-10-31 22:05:52,183 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5416666666666666 [2024-10-31 22:05:52,183 INFO L175 Difference]: Start difference. First operand has 33 places, 22 transitions, 71 flow. Second operand 9 states and 117 transitions. [2024-10-31 22:05:52,183 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 78 transitions, 379 flow [2024-10-31 22:05:52,189 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 78 transitions, 363 flow, removed 8 selfloop flow, removed 2 redundant places. [2024-10-31 22:05:52,193 INFO L231 Difference]: Finished difference. Result has 42 places, 31 transitions, 156 flow [2024-10-31 22:05:52,194 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=67, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=156, PETRI_PLACES=42, PETRI_TRANSITIONS=31} [2024-10-31 22:05:52,194 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 16 predicate places. [2024-10-31 22:05:52,195 INFO L471 AbstractCegarLoop]: Abstraction has has 42 places, 31 transitions, 156 flow [2024-10-31 22:05:52,195 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:05:52,195 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:05:52,195 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:05:52,195 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-31 22:05:52,196 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-31 22:05:52,197 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:05:52,197 INFO L85 PathProgramCache]: Analyzing trace with hash -2024183696, now seen corresponding path program 2 times [2024-10-31 22:05:52,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:05:52,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352729563] [2024-10-31 22:05:52,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:05:52,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:05:52,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:05:52,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:05:52,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:05:52,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352729563] [2024-10-31 22:05:52,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1352729563] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:05:52,407 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:05:52,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-31 22:05:52,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212167435] [2024-10-31 22:05:52,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:05:52,410 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-31 22:05:52,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:05:52,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-31 22:05:52,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-31 22:05:52,444 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-10-31 22:05:52,445 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 31 transitions, 156 flow. Second operand has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:05:52,445 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:05:52,445 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-10-31 22:05:52,446 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:05:52,747 INFO L124 PetriNetUnfolderBase]: 328/605 cut-off events. [2024-10-31 22:05:52,747 INFO L125 PetriNetUnfolderBase]: For 1001/1013 co-relation queries the response was YES. [2024-10-31 22:05:52,750 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1734 conditions, 605 events. 328/605 cut-off events. For 1001/1013 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2538 event pairs, 65 based on Foata normal form. 57/661 useless extension candidates. Maximal degree in co-relation 1713. Up to 234 conditions per place. [2024-10-31 22:05:52,753 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 38 selfloop transitions, 9 changer transitions 28/78 dead transitions. [2024-10-31 22:05:52,753 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 78 transitions, 496 flow [2024-10-31 22:05:52,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-31 22:05:52,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-10-31 22:05:52,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 103 transitions. [2024-10-31 22:05:52,755 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5364583333333334 [2024-10-31 22:05:52,755 INFO L175 Difference]: Start difference. First operand has 42 places, 31 transitions, 156 flow. Second operand 8 states and 103 transitions. [2024-10-31 22:05:52,756 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 78 transitions, 496 flow [2024-10-31 22:05:52,764 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 78 transitions, 488 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-10-31 22:05:52,768 INFO L231 Difference]: Finished difference. Result has 49 places, 33 transitions, 210 flow [2024-10-31 22:05:52,768 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=210, PETRI_PLACES=49, PETRI_TRANSITIONS=33} [2024-10-31 22:05:52,769 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 23 predicate places. [2024-10-31 22:05:52,770 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 33 transitions, 210 flow [2024-10-31 22:05:52,771 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:05:52,771 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:05:52,771 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:05:52,771 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-31 22:05:52,772 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-31 22:05:52,772 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:05:52,773 INFO L85 PathProgramCache]: Analyzing trace with hash 1063992253, now seen corresponding path program 1 times [2024-10-31 22:05:52,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:05:52,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270762204] [2024-10-31 22:05:52,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:05:52,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:05:52,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:05:53,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:05:53,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:05:53,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270762204] [2024-10-31 22:05:53,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270762204] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:05:53,024 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:05:53,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-31 22:05:53,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285526661] [2024-10-31 22:05:53,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:05:53,025 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-31 22:05:53,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:05:53,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-31 22:05:53,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-31 22:05:53,043 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-10-31 22:05:53,044 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 33 transitions, 210 flow. Second operand has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:05:53,044 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:05:53,044 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-10-31 22:05:53,044 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:05:53,321 INFO L124 PetriNetUnfolderBase]: 355/659 cut-off events. [2024-10-31 22:05:53,321 INFO L125 PetriNetUnfolderBase]: For 1815/1827 co-relation queries the response was YES. [2024-10-31 22:05:53,324 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2065 conditions, 659 events. 355/659 cut-off events. For 1815/1827 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2860 event pairs, 80 based on Foata normal form. 21/679 useless extension candidates. Maximal degree in co-relation 2039. Up to 258 conditions per place. [2024-10-31 22:05:53,327 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 43 selfloop transitions, 16 changer transitions 21/83 dead transitions. [2024-10-31 22:05:53,328 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 83 transitions, 597 flow [2024-10-31 22:05:53,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-10-31 22:05:53,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-10-31 22:05:53,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 113 transitions. [2024-10-31 22:05:53,329 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5231481481481481 [2024-10-31 22:05:53,330 INFO L175 Difference]: Start difference. First operand has 49 places, 33 transitions, 210 flow. Second operand 9 states and 113 transitions. [2024-10-31 22:05:53,330 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 83 transitions, 597 flow [2024-10-31 22:05:53,340 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 83 transitions, 527 flow, removed 24 selfloop flow, removed 7 redundant places. [2024-10-31 22:05:53,341 INFO L231 Difference]: Finished difference. Result has 52 places, 41 transitions, 297 flow [2024-10-31 22:05:53,342 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=297, PETRI_PLACES=52, PETRI_TRANSITIONS=41} [2024-10-31 22:05:53,342 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 26 predicate places. [2024-10-31 22:05:53,343 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 41 transitions, 297 flow [2024-10-31 22:05:53,343 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:05:53,343 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:05:53,343 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:05:53,343 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-31 22:05:53,344 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-31 22:05:53,344 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:05:53,344 INFO L85 PathProgramCache]: Analyzing trace with hash 1744668785, now seen corresponding path program 2 times [2024-10-31 22:05:53,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:05:53,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751628827] [2024-10-31 22:05:53,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:05:53,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:05:53,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:05:53,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:05:53,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:05:53,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751628827] [2024-10-31 22:05:53,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751628827] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:05:53,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:05:53,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-31 22:05:53,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428821746] [2024-10-31 22:05:53,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:05:53,508 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-31 22:05:53,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:05:53,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-31 22:05:53,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-31 22:05:53,536 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-10-31 22:05:53,537 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 41 transitions, 297 flow. Second operand has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:05:53,537 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:05:53,537 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-10-31 22:05:53,537 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:05:53,878 INFO L124 PetriNetUnfolderBase]: 526/971 cut-off events. [2024-10-31 22:05:53,879 INFO L125 PetriNetUnfolderBase]: For 3328/3340 co-relation queries the response was YES. [2024-10-31 22:05:53,881 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3187 conditions, 971 events. 526/971 cut-off events. For 3328/3340 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 4538 event pairs, 53 based on Foata normal form. 39/1007 useless extension candidates. Maximal degree in co-relation 3160. Up to 256 conditions per place. [2024-10-31 22:05:53,886 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 57 selfloop transitions, 22 changer transitions 23/105 dead transitions. [2024-10-31 22:05:53,887 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 105 transitions, 793 flow [2024-10-31 22:05:53,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-31 22:05:53,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-10-31 22:05:53,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 141 transitions. [2024-10-31 22:05:53,890 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5340909090909091 [2024-10-31 22:05:53,891 INFO L175 Difference]: Start difference. First operand has 52 places, 41 transitions, 297 flow. Second operand 11 states and 141 transitions. [2024-10-31 22:05:53,891 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 105 transitions, 793 flow [2024-10-31 22:05:53,903 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 105 transitions, 733 flow, removed 26 selfloop flow, removed 3 redundant places. [2024-10-31 22:05:53,906 INFO L231 Difference]: Finished difference. Result has 64 places, 47 transitions, 407 flow [2024-10-31 22:05:53,907 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=263, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=407, PETRI_PLACES=64, PETRI_TRANSITIONS=47} [2024-10-31 22:05:53,908 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 38 predicate places. [2024-10-31 22:05:53,909 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 47 transitions, 407 flow [2024-10-31 22:05:53,909 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:05:53,910 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:05:53,910 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:05:53,911 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-31 22:05:53,911 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-31 22:05:53,912 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:05:53,915 INFO L85 PathProgramCache]: Analyzing trace with hash 1091700605, now seen corresponding path program 3 times [2024-10-31 22:05:53,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:05:53,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750049124] [2024-10-31 22:05:53,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:05:53,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:05:53,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:05:54,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:05:54,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:05:54,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750049124] [2024-10-31 22:05:54,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750049124] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:05:54,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:05:54,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-31 22:05:54,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299400919] [2024-10-31 22:05:54,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:05:54,081 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-31 22:05:54,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:05:54,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-31 22:05:54,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-31 22:05:54,104 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-10-31 22:05:54,104 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 47 transitions, 407 flow. Second operand has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:05:54,104 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:05:54,104 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-10-31 22:05:54,105 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:05:54,484 INFO L124 PetriNetUnfolderBase]: 499/926 cut-off events. [2024-10-31 22:05:54,484 INFO L125 PetriNetUnfolderBase]: For 5506/5518 co-relation queries the response was YES. [2024-10-31 22:05:54,488 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3520 conditions, 926 events. 499/926 cut-off events. For 5506/5518 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 4319 event pairs, 59 based on Foata normal form. 57/980 useless extension candidates. Maximal degree in co-relation 3487. Up to 157 conditions per place. [2024-10-31 22:05:54,492 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 45 selfloop transitions, 27 changer transitions 33/108 dead transitions. [2024-10-31 22:05:54,493 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 108 transitions, 999 flow [2024-10-31 22:05:54,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-31 22:05:54,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-10-31 22:05:54,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 138 transitions. [2024-10-31 22:05:54,495 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5227272727272727 [2024-10-31 22:05:54,495 INFO L175 Difference]: Start difference. First operand has 64 places, 47 transitions, 407 flow. Second operand 11 states and 138 transitions. [2024-10-31 22:05:54,495 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 108 transitions, 999 flow [2024-10-31 22:05:54,511 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 108 transitions, 931 flow, removed 24 selfloop flow, removed 5 redundant places. [2024-10-31 22:05:54,513 INFO L231 Difference]: Finished difference. Result has 72 places, 50 transitions, 514 flow [2024-10-31 22:05:54,514 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=367, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=514, PETRI_PLACES=72, PETRI_TRANSITIONS=50} [2024-10-31 22:05:54,515 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 46 predicate places. [2024-10-31 22:05:54,515 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 50 transitions, 514 flow [2024-10-31 22:05:54,515 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:05:54,516 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:05:54,516 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:05:54,516 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-31 22:05:54,517 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-31 22:05:54,517 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:05:54,517 INFO L85 PathProgramCache]: Analyzing trace with hash 391260105, now seen corresponding path program 1 times [2024-10-31 22:05:54,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:05:54,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508647026] [2024-10-31 22:05:54,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:05:54,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:05:54,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:05:54,693 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:05:54,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:05:54,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508647026] [2024-10-31 22:05:54,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508647026] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:05:54,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [321181611] [2024-10-31 22:05:54,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:05:54,695 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:05:54,695 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53b9eff4-971c-4eed-9f08-34011f4cbea0/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:05:54,698 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53b9eff4-971c-4eed-9f08-34011f4cbea0/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:05:54,701 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53b9eff4-971c-4eed-9f08-34011f4cbea0/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-31 22:05:54,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:05:54,814 INFO L255 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-31 22:05:54,820 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:05:54,959 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:05:54,959 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:05:55,232 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:05:55,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [321181611] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:05:55,233 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:05:55,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2024-10-31 22:05:55,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618761784] [2024-10-31 22:05:55,234 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:05:55,234 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-31 22:05:55,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:05:55,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-31 22:05:55,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2024-10-31 22:05:55,273 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-10-31 22:05:55,273 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 50 transitions, 514 flow. Second operand has 13 states, 13 states have (on average 7.153846153846154) internal successors, (93), 13 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:05:55,273 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:05:55,273 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-10-31 22:05:55,273 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:05:56,024 INFO L124 PetriNetUnfolderBase]: 607/1136 cut-off events. [2024-10-31 22:05:56,024 INFO L125 PetriNetUnfolderBase]: For 10981/10993 co-relation queries the response was YES. [2024-10-31 22:05:56,028 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4889 conditions, 1136 events. 607/1136 cut-off events. For 10981/10993 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 5008 event pairs, 149 based on Foata normal form. 75/1210 useless extension candidates. Maximal degree in co-relation 4852. Up to 522 conditions per place. [2024-10-31 22:05:56,036 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 67 selfloop transitions, 19 changer transitions 67/156 dead transitions. [2024-10-31 22:05:56,036 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 156 transitions, 1590 flow [2024-10-31 22:05:56,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-10-31 22:05:56,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-10-31 22:05:56,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 231 transitions. [2024-10-31 22:05:56,039 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.506578947368421 [2024-10-31 22:05:56,040 INFO L175 Difference]: Start difference. First operand has 72 places, 50 transitions, 514 flow. Second operand 19 states and 231 transitions. [2024-10-31 22:05:56,040 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 156 transitions, 1590 flow [2024-10-31 22:05:56,063 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 156 transitions, 1489 flow, removed 33 selfloop flow, removed 8 redundant places. [2024-10-31 22:05:56,068 INFO L231 Difference]: Finished difference. Result has 92 places, 56 transitions, 646 flow [2024-10-31 22:05:56,068 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=443, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=646, PETRI_PLACES=92, PETRI_TRANSITIONS=56} [2024-10-31 22:05:56,070 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 66 predicate places. [2024-10-31 22:05:56,070 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 56 transitions, 646 flow [2024-10-31 22:05:56,071 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.153846153846154) internal successors, (93), 13 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:05:56,071 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:05:56,071 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:05:56,097 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53b9eff4-971c-4eed-9f08-34011f4cbea0/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-31 22:05:56,272 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53b9eff4-971c-4eed-9f08-34011f4cbea0/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:05:56,272 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-31 22:05:56,273 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:05:56,273 INFO L85 PathProgramCache]: Analyzing trace with hash -827216793, now seen corresponding path program 2 times [2024-10-31 22:05:56,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:05:56,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343876628] [2024-10-31 22:05:56,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:05:56,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:05:56,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:05:56,562 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:05:56,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:05:56,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343876628] [2024-10-31 22:05:56,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1343876628] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:05:56,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1168091497] [2024-10-31 22:05:56,564 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-31 22:05:56,564 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:05:56,564 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53b9eff4-971c-4eed-9f08-34011f4cbea0/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:05:56,567 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53b9eff4-971c-4eed-9f08-34011f4cbea0/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:05:56,569 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53b9eff4-971c-4eed-9f08-34011f4cbea0/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-31 22:05:56,656 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-31 22:05:56,657 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-31 22:05:56,659 INFO L255 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-31 22:05:56,661 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:05:56,739 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:05:56,739 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:05:56,952 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:05:56,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1168091497] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:05:56,953 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:05:56,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2024-10-31 22:05:56,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101867858] [2024-10-31 22:05:56,954 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:05:56,954 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-31 22:05:56,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:05:56,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-31 22:05:56,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-10-31 22:05:56,981 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-10-31 22:05:56,982 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 56 transitions, 646 flow. Second operand has 13 states, 13 states have (on average 7.153846153846154) internal successors, (93), 13 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:05:56,982 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:05:56,982 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-10-31 22:05:56,983 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:05:58,125 INFO L124 PetriNetUnfolderBase]: 895/1655 cut-off events. [2024-10-31 22:05:58,125 INFO L125 PetriNetUnfolderBase]: For 37310/37322 co-relation queries the response was YES. [2024-10-31 22:05:58,133 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9389 conditions, 1655 events. 895/1655 cut-off events. For 37310/37322 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 8056 event pairs, 68 based on Foata normal form. 84/1738 useless extension candidates. Maximal degree in co-relation 9342. Up to 315 conditions per place. [2024-10-31 22:05:58,145 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 88 selfloop transitions, 49 changer transitions 80/220 dead transitions. [2024-10-31 22:05:58,146 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 220 transitions, 2852 flow [2024-10-31 22:05:58,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-10-31 22:05:58,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2024-10-31 22:05:58,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 334 transitions. [2024-10-31 22:05:58,148 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5154320987654321 [2024-10-31 22:05:58,148 INFO L175 Difference]: Start difference. First operand has 92 places, 56 transitions, 646 flow. Second operand 27 states and 334 transitions. [2024-10-31 22:05:58,149 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 220 transitions, 2852 flow [2024-10-31 22:05:58,197 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 220 transitions, 2305 flow, removed 261 selfloop flow, removed 12 redundant places. [2024-10-31 22:05:58,201 INFO L231 Difference]: Finished difference. Result has 118 places, 72 transitions, 1051 flow [2024-10-31 22:05:58,201 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=509, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=1051, PETRI_PLACES=118, PETRI_TRANSITIONS=72} [2024-10-31 22:05:58,202 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 92 predicate places. [2024-10-31 22:05:58,202 INFO L471 AbstractCegarLoop]: Abstraction has has 118 places, 72 transitions, 1051 flow [2024-10-31 22:05:58,203 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.153846153846154) internal successors, (93), 13 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:05:58,203 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:05:58,203 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:05:58,229 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53b9eff4-971c-4eed-9f08-34011f4cbea0/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-31 22:05:58,407 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53b9eff4-971c-4eed-9f08-34011f4cbea0/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:05:58,409 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-31 22:05:58,410 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:05:58,410 INFO L85 PathProgramCache]: Analyzing trace with hash 1859448120, now seen corresponding path program 1 times [2024-10-31 22:05:58,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:05:58,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974555518] [2024-10-31 22:05:58,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:05:58,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:05:58,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:05:58,746 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:05:58,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:05:58,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974555518] [2024-10-31 22:05:58,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974555518] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:05:58,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2026647512] [2024-10-31 22:05:58,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:05:58,752 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:05:58,752 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53b9eff4-971c-4eed-9f08-34011f4cbea0/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:05:58,774 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53b9eff4-971c-4eed-9f08-34011f4cbea0/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:05:58,778 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53b9eff4-971c-4eed-9f08-34011f4cbea0/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-31 22:05:58,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:05:58,856 INFO L255 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-31 22:05:58,858 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:05:58,950 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:05:58,953 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:05:59,152 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:05:59,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2026647512] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:05:59,153 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:05:59,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 14 [2024-10-31 22:05:59,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096604606] [2024-10-31 22:05:59,153 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:05:59,156 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-31 22:05:59,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:05:59,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-31 22:05:59,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2024-10-31 22:05:59,202 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-10-31 22:05:59,203 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 72 transitions, 1051 flow. Second operand has 15 states, 15 states have (on average 7.133333333333334) internal successors, (107), 15 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:05:59,203 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:05:59,203 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-10-31 22:05:59,203 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:06:00,376 INFO L124 PetriNetUnfolderBase]: 1129/2124 cut-off events. [2024-10-31 22:06:00,376 INFO L125 PetriNetUnfolderBase]: For 87490/87496 co-relation queries the response was YES. [2024-10-31 22:06:00,388 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14779 conditions, 2124 events. 1129/2124 cut-off events. For 87490/87496 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 11104 event pairs, 153 based on Foata normal form. 69/2190 useless extension candidates. Maximal degree in co-relation 14720. Up to 490 conditions per place. [2024-10-31 22:06:00,407 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 99 selfloop transitions, 53 changer transitions 67/222 dead transitions. [2024-10-31 22:06:00,407 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 222 transitions, 3667 flow [2024-10-31 22:06:00,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-10-31 22:06:00,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2024-10-31 22:06:00,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 309 transitions. [2024-10-31 22:06:00,409 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.515 [2024-10-31 22:06:00,410 INFO L175 Difference]: Start difference. First operand has 118 places, 72 transitions, 1051 flow. Second operand 25 states and 309 transitions. [2024-10-31 22:06:00,410 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 222 transitions, 3667 flow [2024-10-31 22:06:00,585 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 222 transitions, 3084 flow, removed 275 selfloop flow, removed 13 redundant places. [2024-10-31 22:06:00,591 INFO L231 Difference]: Finished difference. Result has 136 places, 83 transitions, 1339 flow [2024-10-31 22:06:00,592 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=778, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=1339, PETRI_PLACES=136, PETRI_TRANSITIONS=83} [2024-10-31 22:06:00,593 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 110 predicate places. [2024-10-31 22:06:00,593 INFO L471 AbstractCegarLoop]: Abstraction has has 136 places, 83 transitions, 1339 flow [2024-10-31 22:06:00,593 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 7.133333333333334) internal successors, (107), 15 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:06:00,593 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:06:00,593 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:06:00,611 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53b9eff4-971c-4eed-9f08-34011f4cbea0/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-31 22:06:00,794 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53b9eff4-971c-4eed-9f08-34011f4cbea0/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:06:00,795 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-31 22:06:00,795 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:06:00,796 INFO L85 PathProgramCache]: Analyzing trace with hash 2089657410, now seen corresponding path program 2 times [2024-10-31 22:06:00,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:06:00,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094396446] [2024-10-31 22:06:00,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:06:00,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:06:00,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:06:01,039 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:06:01,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:06:01,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094396446] [2024-10-31 22:06:01,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094396446] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:06:01,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1832410509] [2024-10-31 22:06:01,041 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-31 22:06:01,041 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:06:01,042 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53b9eff4-971c-4eed-9f08-34011f4cbea0/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:06:01,044 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53b9eff4-971c-4eed-9f08-34011f4cbea0/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:06:01,046 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53b9eff4-971c-4eed-9f08-34011f4cbea0/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-31 22:06:01,128 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-31 22:06:01,129 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-31 22:06:01,130 INFO L255 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-31 22:06:01,132 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:06:01,232 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:06:01,233 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:06:01,385 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:06:01,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1832410509] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:06:01,386 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:06:01,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 14 [2024-10-31 22:06:01,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202594076] [2024-10-31 22:06:01,387 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:06:01,387 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-31 22:06:01,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:06:01,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-31 22:06:01,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2024-10-31 22:06:01,423 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-10-31 22:06:01,424 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 83 transitions, 1339 flow. Second operand has 15 states, 15 states have (on average 7.133333333333334) internal successors, (107), 15 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:06:01,424 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:06:01,424 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-10-31 22:06:01,424 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:06:03,105 INFO L124 PetriNetUnfolderBase]: 1246/2377 cut-off events. [2024-10-31 22:06:03,105 INFO L125 PetriNetUnfolderBase]: For 139322/139328 co-relation queries the response was YES. [2024-10-31 22:06:03,121 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17840 conditions, 2377 events. 1246/2377 cut-off events. For 139322/139328 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 12685 event pairs, 38 based on Foata normal form. 141/2517 useless extension candidates. Maximal degree in co-relation 17775. Up to 501 conditions per place. [2024-10-31 22:06:03,146 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 92 selfloop transitions, 80 changer transitions 102/277 dead transitions. [2024-10-31 22:06:03,146 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 277 transitions, 5245 flow [2024-10-31 22:06:03,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-10-31 22:06:03,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2024-10-31 22:06:03,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 369 transitions. [2024-10-31 22:06:03,149 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5125 [2024-10-31 22:06:03,149 INFO L175 Difference]: Start difference. First operand has 136 places, 83 transitions, 1339 flow. Second operand 30 states and 369 transitions. [2024-10-31 22:06:03,150 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 277 transitions, 5245 flow [2024-10-31 22:06:03,477 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 277 transitions, 4471 flow, removed 349 selfloop flow, removed 18 redundant places. [2024-10-31 22:06:03,486 INFO L231 Difference]: Finished difference. Result has 159 places, 104 transitions, 1972 flow [2024-10-31 22:06:03,486 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=1032, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=1972, PETRI_PLACES=159, PETRI_TRANSITIONS=104} [2024-10-31 22:06:03,487 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 133 predicate places. [2024-10-31 22:06:03,489 INFO L471 AbstractCegarLoop]: Abstraction has has 159 places, 104 transitions, 1972 flow [2024-10-31 22:06:03,489 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 7.133333333333334) internal successors, (107), 15 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:06:03,490 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:06:03,490 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:06:03,515 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53b9eff4-971c-4eed-9f08-34011f4cbea0/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-10-31 22:06:03,694 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53b9eff4-971c-4eed-9f08-34011f4cbea0/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:06:03,694 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-31 22:06:03,695 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:06:03,695 INFO L85 PathProgramCache]: Analyzing trace with hash -876448546, now seen corresponding path program 3 times [2024-10-31 22:06:03,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:06:03,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268988975] [2024-10-31 22:06:03,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:06:03,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:06:03,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:06:04,010 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:06:04,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:06:04,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268988975] [2024-10-31 22:06:04,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268988975] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:06:04,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1834564069] [2024-10-31 22:06:04,012 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-31 22:06:04,012 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:06:04,013 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53b9eff4-971c-4eed-9f08-34011f4cbea0/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:06:04,020 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53b9eff4-971c-4eed-9f08-34011f4cbea0/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:06:04,024 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53b9eff4-971c-4eed-9f08-34011f4cbea0/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-31 22:06:04,113 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-10-31 22:06:04,113 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-31 22:06:04,115 INFO L255 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-10-31 22:06:04,117 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:06:04,230 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:06:04,230 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:06:04,482 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:06:04,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1834564069] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:06:04,482 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:06:04,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 19 [2024-10-31 22:06:04,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639926547] [2024-10-31 22:06:04,483 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:06:04,483 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-10-31 22:06:04,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:06:04,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-10-31 22:06:04,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=298, Unknown=0, NotChecked=0, Total=380 [2024-10-31 22:06:04,558 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-10-31 22:06:04,558 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 104 transitions, 1972 flow. Second operand has 20 states, 20 states have (on average 7.2) internal successors, (144), 20 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:06:04,559 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:06:04,559 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-10-31 22:06:04,559 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:06:06,786 INFO L124 PetriNetUnfolderBase]: 1462/2730 cut-off events. [2024-10-31 22:06:06,787 INFO L125 PetriNetUnfolderBase]: For 204367/204373 co-relation queries the response was YES. [2024-10-31 22:06:06,804 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22507 conditions, 2730 events. 1462/2730 cut-off events. For 204367/204373 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 14166 event pairs, 42 based on Foata normal form. 60/2789 useless extension candidates. Maximal degree in co-relation 22432. Up to 573 conditions per place. [2024-10-31 22:06:06,825 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 114 selfloop transitions, 102 changer transitions 91/310 dead transitions. [2024-10-31 22:06:06,825 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 310 transitions, 6366 flow [2024-10-31 22:06:06,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-10-31 22:06:06,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2024-10-31 22:06:06,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 417 transitions. [2024-10-31 22:06:06,828 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5110294117647058 [2024-10-31 22:06:06,828 INFO L175 Difference]: Start difference. First operand has 159 places, 104 transitions, 1972 flow. Second operand 34 states and 417 transitions. [2024-10-31 22:06:06,828 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 310 transitions, 6366 flow [2024-10-31 22:06:07,130 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 310 transitions, 5275 flow, removed 514 selfloop flow, removed 20 redundant places. [2024-10-31 22:06:07,137 INFO L231 Difference]: Finished difference. Result has 180 places, 126 transitions, 2513 flow [2024-10-31 22:06:07,137 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=1463, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=2513, PETRI_PLACES=180, PETRI_TRANSITIONS=126} [2024-10-31 22:06:07,138 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, 154 predicate places. [2024-10-31 22:06:07,138 INFO L471 AbstractCegarLoop]: Abstraction has has 180 places, 126 transitions, 2513 flow [2024-10-31 22:06:07,138 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 7.2) internal successors, (144), 20 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:06:07,138 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:06:07,138 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:06:07,162 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53b9eff4-971c-4eed-9f08-34011f4cbea0/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-31 22:06:07,342 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53b9eff4-971c-4eed-9f08-34011f4cbea0/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:06:07,343 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-10-31 22:06:07,343 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:06:07,343 INFO L85 PathProgramCache]: Analyzing trace with hash -1708128831, now seen corresponding path program 4 times [2024-10-31 22:06:07,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:06:07,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217640875] [2024-10-31 22:06:07,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:06:07,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:06:07,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:06:07,357 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-31 22:06:07,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:06:07,392 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-31 22:06:07,392 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-31 22:06:07,394 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2024-10-31 22:06:07,397 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2024-10-31 22:06:07,400 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2024-10-31 22:06:07,400 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-31 22:06:07,401 INFO L407 BasicCegarLoop]: Path program histogram: [4, 3, 2, 2, 1] [2024-10-31 22:06:07,505 INFO L239 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-10-31 22:06:07,506 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-10-31 22:06:07,517 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.10 10:06:07 BasicIcfg [2024-10-31 22:06:07,517 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-10-31 22:06:07,518 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-31 22:06:07,518 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-31 22:06:07,518 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-31 22:06:07,519 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:05:50" (3/4) ... [2024-10-31 22:06:07,520 INFO L136 WitnessPrinter]: Generating witness for reachability counterexample [2024-10-31 22:06:07,605 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53b9eff4-971c-4eed-9f08-34011f4cbea0/bin/uautomizer-verify-4GaUIPS5ZU/witness.graphml [2024-10-31 22:06:07,606 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-31 22:06:07,606 INFO L158 Benchmark]: Toolchain (without parser) took 18498.98ms. Allocated memory was 119.5MB in the beginning and 369.1MB in the end (delta: 249.6MB). Free memory was 81.0MB in the beginning and 163.3MB in the end (delta: -82.4MB). Peak memory consumption was 170.0MB. Max. memory is 16.1GB. [2024-10-31 22:06:07,607 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 119.5MB. Free memory is still 66.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-31 22:06:07,607 INFO L158 Benchmark]: CACSL2BoogieTranslator took 562.28ms. Allocated memory is still 119.5MB. Free memory was 80.6MB in the beginning and 58.8MB in the end (delta: 21.9MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2024-10-31 22:06:07,608 INFO L158 Benchmark]: Boogie Procedure Inliner took 54.60ms. Allocated memory is still 119.5MB. Free memory was 58.8MB in the beginning and 57.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-31 22:06:07,608 INFO L158 Benchmark]: Boogie Preprocessor took 68.32ms. Allocated memory is still 119.5MB. Free memory was 57.1MB in the beginning and 55.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-31 22:06:07,609 INFO L158 Benchmark]: RCFGBuilder took 521.00ms. Allocated memory was 119.5MB in the beginning and 151.0MB in the end (delta: 31.5MB). Free memory was 55.0MB in the beginning and 119.6MB in the end (delta: -64.6MB). Peak memory consumption was 22.8MB. Max. memory is 16.1GB. [2024-10-31 22:06:07,613 INFO L158 Benchmark]: TraceAbstraction took 17195.83ms. Allocated memory was 151.0MB in the beginning and 369.1MB in the end (delta: 218.1MB). Free memory was 119.0MB in the beginning and 171.7MB in the end (delta: -52.7MB). Peak memory consumption was 166.1MB. Max. memory is 16.1GB. [2024-10-31 22:06:07,614 INFO L158 Benchmark]: Witness Printer took 87.91ms. Allocated memory is still 369.1MB. Free memory was 171.7MB in the beginning and 163.3MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-10-31 22:06:07,617 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 119.5MB. Free memory is still 66.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 562.28ms. Allocated memory is still 119.5MB. Free memory was 80.6MB in the beginning and 58.8MB in the end (delta: 21.9MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 54.60ms. Allocated memory is still 119.5MB. Free memory was 58.8MB in the beginning and 57.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 68.32ms. Allocated memory is still 119.5MB. Free memory was 57.1MB in the beginning and 55.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 521.00ms. Allocated memory was 119.5MB in the beginning and 151.0MB in the end (delta: 31.5MB). Free memory was 55.0MB in the beginning and 119.6MB in the end (delta: -64.6MB). Peak memory consumption was 22.8MB. Max. memory is 16.1GB. * TraceAbstraction took 17195.83ms. Allocated memory was 151.0MB in the beginning and 369.1MB in the end (delta: 218.1MB). Free memory was 119.0MB in the beginning and 171.7MB in the end (delta: -52.7MB). Peak memory consumption was 166.1MB. Max. memory is 16.1GB. * Witness Printer took 87.91ms. Allocated memory is still 369.1MB. Free memory was 171.7MB in the beginning and 163.3MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 722]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L694] 0 int i = 3, j = 6; [L712] 0 pthread_t id1, id2; [L713] FCALL, FORK 0 pthread_create(&id1, ((void *)0), t1, ((void *)0)) VAL [\old(arg)={0:0}, \old(argc)=51, \old(argv)={49:50}, argc=51, i=3, id1=-2, j=6] [L696] 1 int k = 0; VAL [\old(arg)={0:0}, arg={0:0}, i=3, j=6, k=0] [L696] COND TRUE 1 k < 5 VAL [\old(arg)={0:0}, arg={0:0}, i=3, j=6, k=0] [L714] FCALL, FORK 0 pthread_create(&id2, ((void *)0), t2, ((void *)0)) VAL [\old(arg)={0:0}, \old(arg)={0:0}, \old(argc)=51, \old(argv)={49:50}, arg={0:0}, argc=51, i=3, id1=-2, id2=-1, j=6, k=0] [L704] 2 int k = 0; VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=3, j=6, k=0, k=0] [L698] 1 i = j + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=7, j=6, k=0, k=0] [L696] 1 k++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=7, j=6, k=0, k=1] [L696] COND TRUE 1 k < 5 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=7, j=6, k=0, k=1] [L716] 0 int condI = i >= (2*5 +6); VAL [\old(arg)={0:0}, \old(arg)={0:0}, \old(argc)=51, \old(argv)={49:50}, arg={0:0}, arg={0:0}, argc=51, condI=0, i=7, id1=-2, id2=-1, j=6, k=0, k=1] [L704] COND TRUE 2 k < 5 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=7, j=6, k=0, k=1] [L706] 2 j = i + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=7, j=8, k=0, k=1] [L704] 2 k++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=7, j=8, k=1, k=1] [L698] 1 i = j + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=9, j=8, k=1, k=1] [L696] 1 k++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=9, j=8, k=1, k=2] [L696] COND TRUE 1 k < 5 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=9, j=8, k=1, k=2] [L704] COND TRUE 2 k < 5 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=9, j=8, k=1, k=2] [L706] 2 j = i + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=9, j=10, k=1, k=2] [L704] 2 k++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=9, j=10, k=2, k=2] [L698] 1 i = j + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=11, j=10, k=2, k=2] [L696] 1 k++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=11, j=10, k=2, k=3] [L704] COND TRUE 2 k < 5 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=11, j=10, k=2, k=3] [L706] 2 j = i + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=11, j=12, k=2, k=3] [L696] COND TRUE 1 k < 5 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=11, j=12, k=2, k=3] [L704] 2 k++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=11, j=12, k=3, k=3] [L698] 1 i = j + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=13, j=12, k=3, k=3] [L696] 1 k++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=13, j=12, k=3, k=4] [L704] COND TRUE 2 k < 5 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=13, j=12, k=3, k=4] [L706] 2 j = i + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=13, j=14, k=3, k=4] [L704] 2 k++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=13, j=14, k=4, k=4] [L696] COND TRUE 1 k < 5 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=13, j=14, k=4, k=4] [L698] 1 i = j + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=15, j=14, k=4, k=4] [L704] COND TRUE 2 k < 5 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=15, j=14, k=4, k=4] [L706] 2 j = i + 1 VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, arg={0:0}, i=15, j=16, k=4, k=4] [L719] 0 int condJ = j >= (2*5 +6); VAL [\old(arg)={0:0}, \old(arg)={0:0}, \old(argc)=51, \old(argv)={49:50}, arg={0:0}, arg={0:0}, argc=51, condI=0, condJ=1, i=15, id1=-2, id2=-1, j=16, k=4, k=4] [L721] COND TRUE 0 condI || condJ VAL [\old(arg)={0:0}, \old(arg)={0:0}, \old(argc)=51, \old(argv)={49:50}, arg={0:0}, arg={0:0}, argc=51, condI=0, condJ=1, i=15, id1=-2, id2=-1, j=16, k=4, k=4] [L722] 0 reach_error() VAL [\old(arg)={0:0}, \old(arg)={0:0}, \old(argc)=51, \old(argv)={49:50}, arg={0:0}, arg={0:0}, argc=51, condI=0, condJ=1, i=15, id1=-2, id2=-1, j=16, k=4, k=4] - UnprovableResult [Line: 713]: 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: 714]: 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 5 procedures, 34 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 16.9s, OverallIterations: 12, TraceHistogramMax: 5, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 10.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1774 SdHoareTripleChecker+Valid, 3.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1746 mSDsluCounter, 109 SdHoareTripleChecker+Invalid, 2.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 99 mSDsCounter, 106 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2947 IncrementalHoareTripleChecker+Invalid, 3053 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 106 mSolverCounterUnsat, 10 mSDtfsCounter, 2947 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 419 GetRequests, 190 SyntacticMatches, 4 SemanticMatches, 225 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1690 ImplicationChecksByTransitivity, 3.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2513occurred in iteration=11, InterpolantAutomatonStates: 189, 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, 0.2s SatisfiabilityAnalysisTime, 4.2s InterpolantComputationTime, 339 NumberOfCodeBlocks, 339 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 390 ConstructedInterpolants, 0 QuantifiedInterpolants, 1557 SizeOfPredicates, 27 NumberOfNonLiveVariables, 480 ConjunctsInSsa, 53 ConjunctsInUnsatCore, 21 InterpolantComputations, 6 PerfectInterpolantSequences, 0/126 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! [2024-10-31 22:06:07,659 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_53b9eff4-971c-4eed-9f08-34011f4cbea0/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE