./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe031_tso.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_053f5c14-db9c-43ee-ada2-1899559cefba/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_053f5c14-db9c-43ee-ada2-1899559cefba/bin/uautomizer-verify-qhAvR1uOyd/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_053f5c14-db9c-43ee-ada2-1899559cefba/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_053f5c14-db9c-43ee-ada2-1899559cefba/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe031_tso.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_053f5c14-db9c-43ee-ada2-1899559cefba/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_053f5c14-db9c-43ee-ada2-1899559cefba/bin/uautomizer-verify-qhAvR1uOyd --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 26b6897a83c9df9076ea7ea4c612ce46453382fa627c0d6af54da2d169befd96 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 15:49:29,044 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 15:49:29,121 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_053f5c14-db9c-43ee-ada2-1899559cefba/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-13 15:49:29,132 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 15:49:29,134 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 15:49:29,165 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 15:49:29,166 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 15:49:29,166 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 15:49:29,166 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-13 15:49:29,166 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-13 15:49:29,167 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 15:49:29,167 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 15:49:29,167 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 15:49:29,167 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 15:49:29,167 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 15:49:29,168 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 15:49:29,168 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-13 15:49:29,168 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 15:49:29,168 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 15:49:29,168 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 15:49:29,168 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 15:49:29,169 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-13 15:49:29,169 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 15:49:29,169 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-13 15:49:29,169 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 15:49:29,169 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 15:49:29,169 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-13 15:49:29,169 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 15:49:29,170 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 15:49:29,170 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 15:49:29,170 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 15:49:29,170 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 15:49:29,170 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 15:49:29,171 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 15:49:29,171 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 15:49:29,171 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-13 15:49:29,171 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-13 15:49:29,171 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 15:49:29,171 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 15:49:29,171 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 15:49:29,172 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 15:49:29,172 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 15:49:29,172 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_053f5c14-db9c-43ee-ada2-1899559cefba/bin/uautomizer-verify-qhAvR1uOyd 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 -> 26b6897a83c9df9076ea7ea4c612ce46453382fa627c0d6af54da2d169befd96 [2024-11-13 15:49:29,500 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 15:49:29,510 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 15:49:29,514 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 15:49:29,516 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 15:49:29,516 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 15:49:29,520 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_053f5c14-db9c-43ee-ada2-1899559cefba/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/pthread-wmm/safe031_tso.i Unable to find full path for "g++" [2024-11-13 15:49:31,613 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 15:49:32,039 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 15:49:32,039 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_053f5c14-db9c-43ee-ada2-1899559cefba/sv-benchmarks/c/pthread-wmm/safe031_tso.i [2024-11-13 15:49:32,056 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_053f5c14-db9c-43ee-ada2-1899559cefba/bin/uautomizer-verify-qhAvR1uOyd/data/16682b92e/d0eeeb07810e4953b711aee2d436349d/FLAGe13d303a4 [2024-11-13 15:49:32,071 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_053f5c14-db9c-43ee-ada2-1899559cefba/bin/uautomizer-verify-qhAvR1uOyd/data/16682b92e/d0eeeb07810e4953b711aee2d436349d [2024-11-13 15:49:32,074 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 15:49:32,075 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 15:49:32,077 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 15:49:32,077 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 15:49:32,082 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 15:49:32,083 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 03:49:32" (1/1) ... [2024-11-13 15:49:32,084 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76002ae4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:49:32, skipping insertion in model container [2024-11-13 15:49:32,084 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 03:49:32" (1/1) ... [2024-11-13 15:49:32,123 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 15:49:32,300 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_053f5c14-db9c-43ee-ada2-1899559cefba/sv-benchmarks/c/pthread-wmm/safe031_tso.i[945,958] [2024-11-13 15:49:32,503 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 15:49:32,514 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 15:49:32,524 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_053f5c14-db9c-43ee-ada2-1899559cefba/sv-benchmarks/c/pthread-wmm/safe031_tso.i[945,958] [2024-11-13 15:49:32,564 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 15:49:32,599 INFO L204 MainTranslator]: Completed translation [2024-11-13 15:49:32,600 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:49:32 WrapperNode [2024-11-13 15:49:32,600 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 15:49:32,602 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 15:49:32,602 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 15:49:32,602 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 15:49:32,610 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:49:32" (1/1) ... [2024-11-13 15:49:32,622 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:49:32" (1/1) ... [2024-11-13 15:49:32,642 INFO L138 Inliner]: procedures = 175, calls = 43, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 57 [2024-11-13 15:49:32,642 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 15:49:32,643 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 15:49:32,643 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 15:49:32,643 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 15:49:32,651 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:49:32" (1/1) ... [2024-11-13 15:49:32,652 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:49:32" (1/1) ... [2024-11-13 15:49:32,654 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:49:32" (1/1) ... [2024-11-13 15:49:32,672 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]. [2024-11-13 15:49:32,676 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:49:32" (1/1) ... [2024-11-13 15:49:32,676 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:49:32" (1/1) ... [2024-11-13 15:49:32,681 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:49:32" (1/1) ... [2024-11-13 15:49:32,688 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:49:32" (1/1) ... [2024-11-13 15:49:32,690 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:49:32" (1/1) ... [2024-11-13 15:49:32,693 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:49:32" (1/1) ... [2024-11-13 15:49:32,695 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 15:49:32,700 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 15:49:32,703 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 15:49:32,703 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 15:49:32,704 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:49:32" (1/1) ... [2024-11-13 15:49:32,714 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 15:49:32,735 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_053f5c14-db9c-43ee-ada2-1899559cefba/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:49:32,750 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_053f5c14-db9c-43ee-ada2-1899559cefba/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-13 15:49:32,755 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_053f5c14-db9c-43ee-ada2-1899559cefba/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-13 15:49:32,788 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-13 15:49:32,789 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 15:49:32,790 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-11-13 15:49:32,790 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-11-13 15:49:32,790 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-11-13 15:49:32,790 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-11-13 15:49:32,791 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2024-11-13 15:49:32,791 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2024-11-13 15:49:32,791 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-13 15:49:32,791 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-13 15:49:32,791 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 15:49:32,791 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 15:49:32,793 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-13 15:49:32,982 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 15:49:32,984 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 15:49:33,189 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-13 15:49:33,190 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 15:49:33,273 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 15:49:33,273 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-13 15:49:33,274 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 03:49:33 BoogieIcfgContainer [2024-11-13 15:49:33,274 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 15:49:33,277 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 15:49:33,277 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 15:49:33,287 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 15:49:33,287 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 03:49:32" (1/3) ... [2024-11-13 15:49:33,288 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e0ec880 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 03:49:33, skipping insertion in model container [2024-11-13 15:49:33,288 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:49:32" (2/3) ... [2024-11-13 15:49:33,288 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e0ec880 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 03:49:33, skipping insertion in model container [2024-11-13 15:49:33,289 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 03:49:33" (3/3) ... [2024-11-13 15:49:33,290 INFO L112 eAbstractionObserver]: Analyzing ICFG safe031_tso.i [2024-11-13 15:49:33,308 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 15:49:33,310 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG safe031_tso.i that has 4 procedures, 39 locations, 1 initial locations, 0 loop locations, and 1 error locations. [2024-11-13 15:49:33,311 INFO L492 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-13 15:49:33,380 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-13 15:49:33,434 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 48 places, 39 transitions, 90 flow [2024-11-13 15:49:33,486 INFO L124 PetriNetUnfolderBase]: 1/36 cut-off events. [2024-11-13 15:49:33,492 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-13 15:49:33,496 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46 conditions, 36 events. 1/36 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 62 event pairs, 0 based on Foata normal form. 0/34 useless extension candidates. Maximal degree in co-relation 38. Up to 2 conditions per place. [2024-11-13 15:49:33,496 INFO L82 GeneralOperation]: Start removeDead. Operand has 48 places, 39 transitions, 90 flow [2024-11-13 15:49:33,504 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 43 places, 33 transitions, 75 flow [2024-11-13 15:49:33,517 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 15:49:33,535 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;@6f81014c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 15:49:33,535 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-13 15:49:33,563 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-13 15:49:33,563 INFO L124 PetriNetUnfolderBase]: 0/32 cut-off events. [2024-11-13 15:49:33,566 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-13 15:49:33,566 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:49:33,567 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:49:33,567 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-13 15:49:33,572 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:49:33,573 INFO L85 PathProgramCache]: Analyzing trace with hash 1355682451, now seen corresponding path program 1 times [2024-11-13 15:49:33,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:49:33,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400261109] [2024-11-13 15:49:33,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:49:33,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:49:33,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:49:34,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:49:34,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:49:34,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400261109] [2024-11-13 15:49:34,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400261109] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:49:34,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:49:34,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 15:49:34,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148946200] [2024-11-13 15:49:34,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:49:34,372 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 15:49:34,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:49:34,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 15:49:34,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 15:49:34,458 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 39 [2024-11-13 15:49:34,461 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 33 transitions, 75 flow. Second operand has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:49:34,461 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:49:34,461 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 39 [2024-11-13 15:49:34,462 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:49:35,165 INFO L124 PetriNetUnfolderBase]: 1218/2316 cut-off events. [2024-11-13 15:49:35,165 INFO L125 PetriNetUnfolderBase]: For 12/12 co-relation queries the response was YES. [2024-11-13 15:49:35,180 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4261 conditions, 2316 events. 1218/2316 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 16183 event pairs, 355 based on Foata normal form. 80/2355 useless extension candidates. Maximal degree in co-relation 4250. Up to 764 conditions per place. [2024-11-13 15:49:35,196 INFO L140 encePairwiseOnDemand]: 30/39 looper letters, 29 selfloop transitions, 6 changer transitions 35/84 dead transitions. [2024-11-13 15:49:35,197 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 84 transitions, 323 flow [2024-11-13 15:49:35,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-13 15:49:35,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-13 15:49:35,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 191 transitions. [2024-11-13 15:49:35,218 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6996336996336996 [2024-11-13 15:49:35,221 INFO L175 Difference]: Start difference. First operand has 43 places, 33 transitions, 75 flow. Second operand 7 states and 191 transitions. [2024-11-13 15:49:35,222 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 84 transitions, 323 flow [2024-11-13 15:49:35,230 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 84 transitions, 318 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-13 15:49:35,236 INFO L231 Difference]: Finished difference. Result has 52 places, 38 transitions, 146 flow [2024-11-13 15:49:35,241 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=146, PETRI_PLACES=52, PETRI_TRANSITIONS=38} [2024-11-13 15:49:35,247 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 9 predicate places. [2024-11-13 15:49:35,248 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 38 transitions, 146 flow [2024-11-13 15:49:35,249 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:49:35,249 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:49:35,250 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:49:35,250 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-13 15:49:35,251 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-13 15:49:35,251 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:49:35,252 INFO L85 PathProgramCache]: Analyzing trace with hash -922442766, now seen corresponding path program 1 times [2024-11-13 15:49:35,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:49:35,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032145198] [2024-11-13 15:49:35,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:49:35,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:49:35,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:49:35,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:49:35,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:49:35,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032145198] [2024-11-13 15:49:35,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2032145198] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:49:35,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:49:35,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 15:49:35,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893092585] [2024-11-13 15:49:35,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:49:35,541 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 15:49:35,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:49:35,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 15:49:35,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-13 15:49:35,569 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 39 [2024-11-13 15:49:35,569 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 38 transitions, 146 flow. Second operand has 6 states, 6 states have (on average 19.0) internal successors, (114), 6 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:49:35,569 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:49:35,569 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 39 [2024-11-13 15:49:35,569 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:49:36,176 INFO L124 PetriNetUnfolderBase]: 1041/2092 cut-off events. [2024-11-13 15:49:36,176 INFO L125 PetriNetUnfolderBase]: For 2352/2352 co-relation queries the response was YES. [2024-11-13 15:49:36,185 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5816 conditions, 2092 events. 1041/2092 cut-off events. For 2352/2352 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 15015 event pairs, 145 based on Foata normal form. 58/2127 useless extension candidates. Maximal degree in co-relation 5800. Up to 677 conditions per place. [2024-11-13 15:49:36,197 INFO L140 encePairwiseOnDemand]: 30/39 looper letters, 34 selfloop transitions, 10 changer transitions 40/98 dead transitions. [2024-11-13 15:49:36,197 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 98 transitions, 602 flow [2024-11-13 15:49:36,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-13 15:49:36,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-13 15:49:36,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 255 transitions. [2024-11-13 15:49:36,202 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6538461538461539 [2024-11-13 15:49:36,204 INFO L175 Difference]: Start difference. First operand has 52 places, 38 transitions, 146 flow. Second operand 10 states and 255 transitions. [2024-11-13 15:49:36,204 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 98 transitions, 602 flow [2024-11-13 15:49:36,220 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 98 transitions, 564 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-13 15:49:36,222 INFO L231 Difference]: Finished difference. Result has 63 places, 43 transitions, 218 flow [2024-11-13 15:49:36,222 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=218, PETRI_PLACES=63, PETRI_TRANSITIONS=43} [2024-11-13 15:49:36,223 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 20 predicate places. [2024-11-13 15:49:36,223 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 43 transitions, 218 flow [2024-11-13 15:49:36,224 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.0) internal successors, (114), 6 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:49:36,225 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:49:36,225 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:49:36,225 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-13 15:49:36,225 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-13 15:49:36,226 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:49:36,226 INFO L85 PathProgramCache]: Analyzing trace with hash -1897617838, now seen corresponding path program 1 times [2024-11-13 15:49:36,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:49:36,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505289064] [2024-11-13 15:49:36,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:49:36,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:49:36,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:49:36,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:49:36,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:49:36,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505289064] [2024-11-13 15:49:36,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505289064] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:49:36,502 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:49:36,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 15:49:36,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840831171] [2024-11-13 15:49:36,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:49:36,502 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 15:49:36,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:49:36,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 15:49:36,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-13 15:49:36,526 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 39 [2024-11-13 15:49:36,527 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 43 transitions, 218 flow. Second operand has 6 states, 6 states have (on average 19.0) internal successors, (114), 6 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:49:36,527 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:49:36,527 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 39 [2024-11-13 15:49:36,527 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:49:37,068 INFO L124 PetriNetUnfolderBase]: 987/2000 cut-off events. [2024-11-13 15:49:37,068 INFO L125 PetriNetUnfolderBase]: For 6003/6017 co-relation queries the response was YES. [2024-11-13 15:49:37,075 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6445 conditions, 2000 events. 987/2000 cut-off events. For 6003/6017 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 14215 event pairs, 164 based on Foata normal form. 67/2057 useless extension candidates. Maximal degree in co-relation 6421. Up to 653 conditions per place. [2024-11-13 15:49:37,086 INFO L140 encePairwiseOnDemand]: 30/39 looper letters, 38 selfloop transitions, 12 changer transitions 42/106 dead transitions. [2024-11-13 15:49:37,087 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 106 transitions, 748 flow [2024-11-13 15:49:37,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-13 15:49:37,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-13 15:49:37,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 254 transitions. [2024-11-13 15:49:37,090 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6512820512820513 [2024-11-13 15:49:37,090 INFO L175 Difference]: Start difference. First operand has 63 places, 43 transitions, 218 flow. Second operand 10 states and 254 transitions. [2024-11-13 15:49:37,090 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 106 transitions, 748 flow [2024-11-13 15:49:37,108 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 106 transitions, 692 flow, removed 28 selfloop flow, removed 6 redundant places. [2024-11-13 15:49:37,110 INFO L231 Difference]: Finished difference. Result has 69 places, 48 transitions, 308 flow [2024-11-13 15:49:37,110 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=308, PETRI_PLACES=69, PETRI_TRANSITIONS=48} [2024-11-13 15:49:37,112 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 26 predicate places. [2024-11-13 15:49:37,113 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 48 transitions, 308 flow [2024-11-13 15:49:37,113 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.0) internal successors, (114), 6 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:49:37,113 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:49:37,113 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:49:37,113 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-13 15:49:37,113 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-13 15:49:37,114 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:49:37,114 INFO L85 PathProgramCache]: Analyzing trace with hash 1542095093, now seen corresponding path program 1 times [2024-11-13 15:49:37,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:49:37,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608670487] [2024-11-13 15:49:37,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:49:37,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:49:37,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:49:37,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:49:37,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:49:37,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608670487] [2024-11-13 15:49:37,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608670487] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:49:37,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:49:37,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 15:49:37,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269187745] [2024-11-13 15:49:37,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:49:37,277 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 15:49:37,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:49:37,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 15:49:37,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 15:49:37,288 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 39 [2024-11-13 15:49:37,288 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 48 transitions, 308 flow. Second operand has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:49:37,288 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:49:37,289 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 39 [2024-11-13 15:49:37,289 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:49:37,627 INFO L124 PetriNetUnfolderBase]: 1045/2183 cut-off events. [2024-11-13 15:49:37,627 INFO L125 PetriNetUnfolderBase]: For 3571/3637 co-relation queries the response was YES. [2024-11-13 15:49:37,638 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5680 conditions, 2183 events. 1045/2183 cut-off events. For 3571/3637 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 15978 event pairs, 194 based on Foata normal form. 139/2200 useless extension candidates. Maximal degree in co-relation 5651. Up to 853 conditions per place. [2024-11-13 15:49:37,649 INFO L140 encePairwiseOnDemand]: 33/39 looper letters, 26 selfloop transitions, 5 changer transitions 0/63 dead transitions. [2024-11-13 15:49:37,649 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 63 transitions, 404 flow [2024-11-13 15:49:37,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 15:49:37,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-13 15:49:37,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 117 transitions. [2024-11-13 15:49:37,651 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.75 [2024-11-13 15:49:37,651 INFO L175 Difference]: Start difference. First operand has 69 places, 48 transitions, 308 flow. Second operand 4 states and 117 transitions. [2024-11-13 15:49:37,651 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 63 transitions, 404 flow [2024-11-13 15:49:37,675 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 63 transitions, 382 flow, removed 11 selfloop flow, removed 4 redundant places. [2024-11-13 15:49:37,677 INFO L231 Difference]: Finished difference. Result has 64 places, 52 transitions, 324 flow [2024-11-13 15:49:37,677 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=286, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=324, PETRI_PLACES=64, PETRI_TRANSITIONS=52} [2024-11-13 15:49:37,679 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 21 predicate places. [2024-11-13 15:49:37,679 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 52 transitions, 324 flow [2024-11-13 15:49:37,680 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:49:37,681 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:49:37,682 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:49:37,682 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-13 15:49:37,682 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-13 15:49:37,683 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:49:37,683 INFO L85 PathProgramCache]: Analyzing trace with hash 1562459087, now seen corresponding path program 1 times [2024-11-13 15:49:37,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:49:37,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676955425] [2024-11-13 15:49:37,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:49:37,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:49:37,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:49:37,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:49:37,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:49:37,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676955425] [2024-11-13 15:49:37,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [676955425] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:49:37,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:49:37,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-13 15:49:37,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963929813] [2024-11-13 15:49:37,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:49:37,953 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 15:49:37,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:49:37,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 15:49:37,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-13 15:49:37,975 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 39 [2024-11-13 15:49:37,976 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 52 transitions, 324 flow. Second operand has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:49:37,976 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:49:37,976 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 39 [2024-11-13 15:49:37,976 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:49:38,873 INFO L124 PetriNetUnfolderBase]: 1983/4030 cut-off events. [2024-11-13 15:49:38,874 INFO L125 PetriNetUnfolderBase]: For 7348/7435 co-relation queries the response was YES. [2024-11-13 15:49:38,893 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12266 conditions, 4030 events. 1983/4030 cut-off events. For 7348/7435 co-relation queries the response was YES. Maximal size of possible extension queue 278. Compared 32338 event pairs, 495 based on Foata normal form. 115/3840 useless extension candidates. Maximal degree in co-relation 12237. Up to 1128 conditions per place. [2024-11-13 15:49:38,907 INFO L140 encePairwiseOnDemand]: 30/39 looper letters, 50 selfloop transitions, 22 changer transitions 22/112 dead transitions. [2024-11-13 15:49:38,907 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 112 transitions, 825 flow [2024-11-13 15:49:38,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-13 15:49:38,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-13 15:49:38,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 254 transitions. [2024-11-13 15:49:38,909 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6512820512820513 [2024-11-13 15:49:38,909 INFO L175 Difference]: Start difference. First operand has 64 places, 52 transitions, 324 flow. Second operand 10 states and 254 transitions. [2024-11-13 15:49:38,909 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 112 transitions, 825 flow [2024-11-13 15:49:38,933 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 112 transitions, 819 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-11-13 15:49:38,935 INFO L231 Difference]: Finished difference. Result has 78 places, 59 transitions, 476 flow [2024-11-13 15:49:38,935 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=318, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=476, PETRI_PLACES=78, PETRI_TRANSITIONS=59} [2024-11-13 15:49:38,936 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 35 predicate places. [2024-11-13 15:49:38,936 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 59 transitions, 476 flow [2024-11-13 15:49:38,936 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:49:38,936 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:49:38,937 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:49:38,937 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-13 15:49:38,937 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-13 15:49:38,937 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:49:38,938 INFO L85 PathProgramCache]: Analyzing trace with hash -1410169273, now seen corresponding path program 1 times [2024-11-13 15:49:38,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:49:38,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425163627] [2024-11-13 15:49:38,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:49:38,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:49:38,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:49:39,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:49:39,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:49:39,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425163627] [2024-11-13 15:49:39,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1425163627] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:49:39,109 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:49:39,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 15:49:39,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855467784] [2024-11-13 15:49:39,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:49:39,109 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 15:49:39,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:49:39,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 15:49:39,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-13 15:49:39,123 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 39 [2024-11-13 15:49:39,123 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 59 transitions, 476 flow. Second operand has 5 states, 5 states have (on average 23.2) internal successors, (116), 5 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:49:39,123 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:49:39,124 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 39 [2024-11-13 15:49:39,124 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:49:39,585 INFO L124 PetriNetUnfolderBase]: 1331/2675 cut-off events. [2024-11-13 15:49:39,586 INFO L125 PetriNetUnfolderBase]: For 3602/4239 co-relation queries the response was YES. [2024-11-13 15:49:39,681 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7541 conditions, 2675 events. 1331/2675 cut-off events. For 3602/4239 co-relation queries the response was YES. Maximal size of possible extension queue 214. Compared 19428 event pairs, 104 based on Foata normal form. 190/2740 useless extension candidates. Maximal degree in co-relation 7505. Up to 1148 conditions per place. [2024-11-13 15:49:39,688 INFO L140 encePairwiseOnDemand]: 33/39 looper letters, 33 selfloop transitions, 8 changer transitions 5/80 dead transitions. [2024-11-13 15:49:39,689 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 80 transitions, 626 flow [2024-11-13 15:49:39,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 15:49:39,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-13 15:49:39,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 148 transitions. [2024-11-13 15:49:39,691 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7589743589743589 [2024-11-13 15:49:39,691 INFO L175 Difference]: Start difference. First operand has 78 places, 59 transitions, 476 flow. Second operand 5 states and 148 transitions. [2024-11-13 15:49:39,691 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 80 transitions, 626 flow [2024-11-13 15:49:39,708 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 80 transitions, 573 flow, removed 20 selfloop flow, removed 1 redundant places. [2024-11-13 15:49:39,711 INFO L231 Difference]: Finished difference. Result has 83 places, 58 transitions, 439 flow [2024-11-13 15:49:39,711 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=423, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=439, PETRI_PLACES=83, PETRI_TRANSITIONS=58} [2024-11-13 15:49:39,713 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 40 predicate places. [2024-11-13 15:49:39,713 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 58 transitions, 439 flow [2024-11-13 15:49:39,714 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.2) internal successors, (116), 5 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:49:39,714 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:49:39,714 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:49:39,714 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-13 15:49:39,714 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-13 15:49:39,714 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:49:39,715 INFO L85 PathProgramCache]: Analyzing trace with hash 1273088609, now seen corresponding path program 1 times [2024-11-13 15:49:39,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:49:39,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359678574] [2024-11-13 15:49:39,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:49:39,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:49:39,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:49:39,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:49:39,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:49:39,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359678574] [2024-11-13 15:49:39,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359678574] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:49:39,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:49:39,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-13 15:49:39,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723439086] [2024-11-13 15:49:39,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:49:39,950 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 15:49:39,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:49:39,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 15:49:39,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-13 15:49:39,975 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 39 [2024-11-13 15:49:39,976 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 58 transitions, 439 flow. Second operand has 6 states, 6 states have (on average 19.5) internal successors, (117), 6 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:49:39,976 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:49:39,976 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 39 [2024-11-13 15:49:39,976 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:49:40,736 INFO L124 PetriNetUnfolderBase]: 1701/3616 cut-off events. [2024-11-13 15:49:40,737 INFO L125 PetriNetUnfolderBase]: For 10700/11089 co-relation queries the response was YES. [2024-11-13 15:49:40,763 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12098 conditions, 3616 events. 1701/3616 cut-off events. For 10700/11089 co-relation queries the response was YES. Maximal size of possible extension queue 307. Compared 30149 event pairs, 621 based on Foata normal form. 91/3300 useless extension candidates. Maximal degree in co-relation 12059. Up to 998 conditions per place. [2024-11-13 15:49:40,781 INFO L140 encePairwiseOnDemand]: 30/39 looper letters, 35 selfloop transitions, 12 changer transitions 20/89 dead transitions. [2024-11-13 15:49:40,781 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 89 transitions, 758 flow [2024-11-13 15:49:40,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 15:49:40,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-13 15:49:40,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 158 transitions. [2024-11-13 15:49:40,783 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6752136752136753 [2024-11-13 15:49:40,783 INFO L175 Difference]: Start difference. First operand has 83 places, 58 transitions, 439 flow. Second operand 6 states and 158 transitions. [2024-11-13 15:49:40,783 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 89 transitions, 758 flow [2024-11-13 15:49:40,817 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 89 transitions, 720 flow, removed 16 selfloop flow, removed 6 redundant places. [2024-11-13 15:49:40,823 INFO L231 Difference]: Finished difference. Result has 82 places, 51 transitions, 378 flow [2024-11-13 15:49:40,823 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=413, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=378, PETRI_PLACES=82, PETRI_TRANSITIONS=51} [2024-11-13 15:49:40,824 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 39 predicate places. [2024-11-13 15:49:40,824 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 51 transitions, 378 flow [2024-11-13 15:49:40,824 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.5) internal successors, (117), 6 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:49:40,824 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:49:40,824 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:49:40,825 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-13 15:49:40,825 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-13 15:49:40,825 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:49:40,825 INFO L85 PathProgramCache]: Analyzing trace with hash -66808293, now seen corresponding path program 2 times [2024-11-13 15:49:40,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:49:40,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23277459] [2024-11-13 15:49:40,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:49:40,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:49:40,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:49:41,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:49:41,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:49:41,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23277459] [2024-11-13 15:49:41,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23277459] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:49:41,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:49:41,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 15:49:41,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704081048] [2024-11-13 15:49:41,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:49:41,066 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 15:49:41,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:49:41,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 15:49:41,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-13 15:49:41,074 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 39 [2024-11-13 15:49:41,075 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 51 transitions, 378 flow. Second operand has 6 states, 6 states have (on average 23.0) internal successors, (138), 6 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:49:41,075 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:49:41,075 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 39 [2024-11-13 15:49:41,075 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:49:41,491 INFO L124 PetriNetUnfolderBase]: 1016/1939 cut-off events. [2024-11-13 15:49:41,491 INFO L125 PetriNetUnfolderBase]: For 2877/3908 co-relation queries the response was YES. [2024-11-13 15:49:41,497 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5855 conditions, 1939 events. 1016/1939 cut-off events. For 2877/3908 co-relation queries the response was YES. Maximal size of possible extension queue 201. Compared 12856 event pairs, 58 based on Foata normal form. 162/1974 useless extension candidates. Maximal degree in co-relation 5817. Up to 840 conditions per place. [2024-11-13 15:49:41,500 INFO L140 encePairwiseOnDemand]: 33/39 looper letters, 25 selfloop transitions, 11 changer transitions 14/70 dead transitions. [2024-11-13 15:49:41,501 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 70 transitions, 512 flow [2024-11-13 15:49:41,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 15:49:41,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-13 15:49:41,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 171 transitions. [2024-11-13 15:49:41,502 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7307692307692307 [2024-11-13 15:49:41,502 INFO L175 Difference]: Start difference. First operand has 82 places, 51 transitions, 378 flow. Second operand 6 states and 171 transitions. [2024-11-13 15:49:41,502 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 70 transitions, 512 flow [2024-11-13 15:49:41,507 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 70 transitions, 452 flow, removed 12 selfloop flow, removed 11 redundant places. [2024-11-13 15:49:41,508 INFO L231 Difference]: Finished difference. Result has 73 places, 42 transitions, 260 flow [2024-11-13 15:49:41,508 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=318, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=260, PETRI_PLACES=73, PETRI_TRANSITIONS=42} [2024-11-13 15:49:41,509 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 30 predicate places. [2024-11-13 15:49:41,509 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 42 transitions, 260 flow [2024-11-13 15:49:41,509 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.0) internal successors, (138), 6 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:49:41,510 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:49:41,510 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:49:41,510 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-13 15:49:41,510 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-13 15:49:41,510 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:49:41,511 INFO L85 PathProgramCache]: Analyzing trace with hash -603192012, now seen corresponding path program 1 times [2024-11-13 15:49:41,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:49:41,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278750040] [2024-11-13 15:49:41,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:49:41,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:49:41,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:49:41,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:49:41,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:49:41,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278750040] [2024-11-13 15:49:41,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1278750040] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:49:41,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:49:41,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-13 15:49:41,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699855772] [2024-11-13 15:49:41,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:49:41,729 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 15:49:41,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:49:41,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 15:49:41,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-13 15:49:41,747 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 39 [2024-11-13 15:49:41,747 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 42 transitions, 260 flow. Second operand has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 6 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:49:41,747 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:49:41,747 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 39 [2024-11-13 15:49:41,748 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:49:41,931 INFO L124 PetriNetUnfolderBase]: 198/432 cut-off events. [2024-11-13 15:49:41,932 INFO L125 PetriNetUnfolderBase]: For 866/878 co-relation queries the response was YES. [2024-11-13 15:49:41,933 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1402 conditions, 432 events. 198/432 cut-off events. For 866/878 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1981 event pairs, 22 based on Foata normal form. 8/421 useless extension candidates. Maximal degree in co-relation 1371. Up to 186 conditions per place. [2024-11-13 15:49:41,934 INFO L140 encePairwiseOnDemand]: 30/39 looper letters, 0 selfloop transitions, 0 changer transitions 56/56 dead transitions. [2024-11-13 15:49:41,934 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 56 transitions, 377 flow [2024-11-13 15:49:41,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-13 15:49:41,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-13 15:49:41,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 149 transitions. [2024-11-13 15:49:41,936 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5457875457875457 [2024-11-13 15:49:41,936 INFO L175 Difference]: Start difference. First operand has 73 places, 42 transitions, 260 flow. Second operand 7 states and 149 transitions. [2024-11-13 15:49:41,936 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 56 transitions, 377 flow [2024-11-13 15:49:41,940 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 56 transitions, 249 flow, removed 21 selfloop flow, removed 23 redundant places. [2024-11-13 15:49:41,941 INFO L231 Difference]: Finished difference. Result has 54 places, 0 transitions, 0 flow [2024-11-13 15:49:41,941 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=54, PETRI_TRANSITIONS=0} [2024-11-13 15:49:41,942 INFO L277 CegarLoopForPetriNet]: 43 programPoint places, 11 predicate places. [2024-11-13 15:49:41,942 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 0 transitions, 0 flow [2024-11-13 15:49:41,942 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 6 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:49:41,945 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2024-11-13 15:49:41,946 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2024-11-13 15:49:41,946 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-11-13 15:49:41,946 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-11-13 15:49:41,946 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-13 15:49:41,947 INFO L407 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:49:41,951 INFO L242 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-13 15:49:41,951 INFO L173 ceAbstractionStarter]: Computing trace abstraction results [2024-11-13 15:49:41,957 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.11 03:49:41 BasicIcfg [2024-11-13 15:49:41,957 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-13 15:49:41,958 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-13 15:49:41,958 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-13 15:49:41,958 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-13 15:49:41,959 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 03:49:33" (3/4) ... [2024-11-13 15:49:41,961 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-13 15:49:41,965 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2024-11-13 15:49:41,965 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2024-11-13 15:49:41,965 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2024-11-13 15:49:41,969 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 35 nodes and edges [2024-11-13 15:49:41,970 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2024-11-13 15:49:41,970 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-11-13 15:49:41,970 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2024-11-13 15:49:42,048 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_053f5c14-db9c-43ee-ada2-1899559cefba/bin/uautomizer-verify-qhAvR1uOyd/witness.graphml [2024-11-13 15:49:42,049 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_053f5c14-db9c-43ee-ada2-1899559cefba/bin/uautomizer-verify-qhAvR1uOyd/witness.yml [2024-11-13 15:49:42,049 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-13 15:49:42,050 INFO L158 Benchmark]: Toolchain (without parser) took 9974.76ms. Allocated memory was 142.6MB in the beginning and 369.1MB in the end (delta: 226.5MB). Free memory was 117.7MB in the beginning and 214.5MB in the end (delta: -96.8MB). Peak memory consumption was 129.7MB. Max. memory is 16.1GB. [2024-11-13 15:49:42,050 INFO L158 Benchmark]: CDTParser took 0.48ms. Allocated memory is still 167.8MB. Free memory is still 105.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 15:49:42,051 INFO L158 Benchmark]: CACSL2BoogieTranslator took 523.95ms. Allocated memory is still 142.6MB. Free memory was 117.4MB in the beginning and 97.2MB in the end (delta: 20.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-13 15:49:42,051 INFO L158 Benchmark]: Boogie Procedure Inliner took 40.55ms. Allocated memory is still 142.6MB. Free memory was 97.2MB in the beginning and 95.7MB in the end (delta: 1.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-13 15:49:42,051 INFO L158 Benchmark]: Boogie Preprocessor took 56.13ms. Allocated memory is still 142.6MB. Free memory was 95.7MB in the beginning and 93.9MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 15:49:42,052 INFO L158 Benchmark]: RCFGBuilder took 574.52ms. Allocated memory is still 142.6MB. Free memory was 93.9MB in the beginning and 75.8MB in the end (delta: 18.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-13 15:49:42,052 INFO L158 Benchmark]: TraceAbstraction took 8680.22ms. Allocated memory was 142.6MB in the beginning and 369.1MB in the end (delta: 226.5MB). Free memory was 75.1MB in the beginning and 219.0MB in the end (delta: -143.9MB). Peak memory consumption was 79.4MB. Max. memory is 16.1GB. [2024-11-13 15:49:42,052 INFO L158 Benchmark]: Witness Printer took 91.24ms. Allocated memory is still 369.1MB. Free memory was 219.0MB in the beginning and 214.5MB in the end (delta: 4.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-13 15:49:42,054 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.48ms. Allocated memory is still 167.8MB. Free memory is still 105.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 523.95ms. Allocated memory is still 142.6MB. Free memory was 117.4MB in the beginning and 97.2MB in the end (delta: 20.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 40.55ms. Allocated memory is still 142.6MB. Free memory was 97.2MB in the beginning and 95.7MB in the end (delta: 1.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 56.13ms. Allocated memory is still 142.6MB. Free memory was 95.7MB in the beginning and 93.9MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 574.52ms. Allocated memory is still 142.6MB. Free memory was 93.9MB in the beginning and 75.8MB in the end (delta: 18.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 8680.22ms. Allocated memory was 142.6MB in the beginning and 369.1MB in the end (delta: 226.5MB). Free memory was 75.1MB in the beginning and 219.0MB in the end (delta: -143.9MB). Peak memory consumption was 79.4MB. Max. memory is 16.1GB. * Witness Printer took 91.24ms. Allocated memory is still 369.1MB. Free memory was 219.0MB in the beginning and 214.5MB in the end (delta: 4.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 18]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 64 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 8.5s, OverallIterations: 9, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 5.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 399 SdHoareTripleChecker+Valid, 1.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 362 mSDsluCounter, 300 SdHoareTripleChecker+Invalid, 1.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 197 mSDsCounter, 38 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 812 IncrementalHoareTripleChecker+Invalid, 850 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 38 mSolverCounterUnsat, 103 mSDtfsCounter, 812 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 74 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=476occurred in iteration=5, InterpolantAutomatonStates: 65, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.2s InterpolantComputationTime, 186 NumberOfCodeBlocks, 186 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 177 ConstructedInterpolants, 0 QuantifiedInterpolants, 857 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-11-13 15:49:42,087 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_053f5c14-db9c-43ee-ada2-1899559cefba/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE