./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe008_tso.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ad1debe-53ce-4124-87d7-ab0ceba928d3/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ad1debe-53ce-4124-87d7-ab0ceba928d3/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ad1debe-53ce-4124-87d7-ab0ceba928d3/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ad1debe-53ce-4124-87d7-ab0ceba928d3/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe008_tso.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ad1debe-53ce-4124-87d7-ab0ceba928d3/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ad1debe-53ce-4124-87d7-ab0ceba928d3/bin/uautomizer-verify-BQ2R08f2Ya --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 3447fa4cbed8c2dd9f8bb92c4d44acca15639ccfd4d81b58d710cf11090f115c --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-28 23:51:28,865 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-28 23:51:28,936 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ad1debe-53ce-4124-87d7-ab0ceba928d3/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-28 23:51:28,942 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-28 23:51:28,943 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-28 23:51:28,967 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-28 23:51:28,967 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-28 23:51:28,968 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-28 23:51:28,969 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-28 23:51:28,969 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-28 23:51:28,970 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-28 23:51:28,970 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-28 23:51:28,971 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-28 23:51:28,972 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-28 23:51:28,972 INFO L153 SettingsManager]: * Use SBE=true [2023-11-28 23:51:28,973 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-28 23:51:28,973 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-28 23:51:28,974 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-28 23:51:28,974 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-28 23:51:28,975 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-28 23:51:28,975 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-28 23:51:28,976 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-28 23:51:28,976 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-28 23:51:28,977 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-28 23:51:28,977 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-28 23:51:28,978 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-28 23:51:28,978 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-28 23:51:28,978 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-28 23:51:28,979 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-28 23:51:28,979 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-28 23:51:28,980 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-28 23:51:28,980 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-28 23:51:28,980 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-28 23:51:28,981 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-28 23:51:28,981 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-28 23:51:28,981 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-28 23:51:28,981 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-28 23:51:28,982 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-28 23:51:28,982 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-28 23:51:28,982 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-28 23:51:28,982 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-28 23:51:28,983 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-28 23:51:28,983 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ad1debe-53ce-4124-87d7-ab0ceba928d3/bin/uautomizer-verify-BQ2R08f2Ya/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ad1debe-53ce-4124-87d7-ab0ceba928d3/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3447fa4cbed8c2dd9f8bb92c4d44acca15639ccfd4d81b58d710cf11090f115c [2023-11-28 23:51:29,221 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-28 23:51:29,268 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-28 23:51:29,270 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-28 23:51:29,271 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-28 23:51:29,271 INFO L274 PluginConnector]: CDTParser initialized [2023-11-28 23:51:29,273 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ad1debe-53ce-4124-87d7-ab0ceba928d3/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/pthread-wmm/safe008_tso.i [2023-11-28 23:51:32,093 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-28 23:51:32,314 INFO L384 CDTParser]: Found 1 translation units. [2023-11-28 23:51:32,314 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ad1debe-53ce-4124-87d7-ab0ceba928d3/sv-benchmarks/c/pthread-wmm/safe008_tso.i [2023-11-28 23:51:32,331 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ad1debe-53ce-4124-87d7-ab0ceba928d3/bin/uautomizer-verify-BQ2R08f2Ya/data/fd101ee48/015613d0f49c48ac82d03bb804ee3d38/FLAG769c5adbe [2023-11-28 23:51:32,344 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ad1debe-53ce-4124-87d7-ab0ceba928d3/bin/uautomizer-verify-BQ2R08f2Ya/data/fd101ee48/015613d0f49c48ac82d03bb804ee3d38 [2023-11-28 23:51:32,347 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-28 23:51:32,348 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-28 23:51:32,349 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-28 23:51:32,349 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-28 23:51:32,354 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-28 23:51:32,355 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 11:51:32" (1/1) ... [2023-11-28 23:51:32,356 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@562e706a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:51:32, skipping insertion in model container [2023-11-28 23:51:32,356 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 11:51:32" (1/1) ... [2023-11-28 23:51:32,405 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-28 23:51:32,569 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ad1debe-53ce-4124-87d7-ab0ceba928d3/sv-benchmarks/c/pthread-wmm/safe008_tso.i[945,958] [2023-11-28 23:51:32,751 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-28 23:51:32,762 INFO L202 MainTranslator]: Completed pre-run [2023-11-28 23:51:32,775 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ad1debe-53ce-4124-87d7-ab0ceba928d3/sv-benchmarks/c/pthread-wmm/safe008_tso.i[945,958] [2023-11-28 23:51:32,820 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-28 23:51:32,861 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-28 23:51:32,862 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-28 23:51:32,870 INFO L206 MainTranslator]: Completed translation [2023-11-28 23:51:32,871 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:51:32 WrapperNode [2023-11-28 23:51:32,871 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-28 23:51:32,872 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-28 23:51:32,872 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-28 23:51:32,873 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-28 23:51:32,881 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:51:32" (1/1) ... [2023-11-28 23:51:32,896 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:51:32" (1/1) ... [2023-11-28 23:51:32,920 INFO L138 Inliner]: procedures = 176, calls = 53, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 70 [2023-11-28 23:51:32,921 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-28 23:51:32,921 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-28 23:51:32,922 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-28 23:51:32,922 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-28 23:51:32,935 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:51:32" (1/1) ... [2023-11-28 23:51:32,935 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:51:32" (1/1) ... [2023-11-28 23:51:32,939 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:51:32" (1/1) ... [2023-11-28 23:51:32,955 INFO L175 MemorySlicer]: Split 5 memory accesses to 4 slices as follows [2, 1, 1, 1]. 40 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0]. The 3 writes are split as follows [0, 1, 1, 1]. [2023-11-28 23:51:32,956 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:51:32" (1/1) ... [2023-11-28 23:51:32,956 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:51:32" (1/1) ... [2023-11-28 23:51:32,962 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:51:32" (1/1) ... [2023-11-28 23:51:32,964 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:51:32" (1/1) ... [2023-11-28 23:51:32,967 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:51:32" (1/1) ... [2023-11-28 23:51:32,968 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:51:32" (1/1) ... [2023-11-28 23:51:32,972 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-28 23:51:32,973 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-28 23:51:32,973 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-28 23:51:32,973 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-28 23:51:32,974 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:51:32" (1/1) ... [2023-11-28 23:51:32,981 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-28 23:51:32,993 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ad1debe-53ce-4124-87d7-ab0ceba928d3/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 23:51:33,006 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ad1debe-53ce-4124-87d7-ab0ceba928d3/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-28 23:51:33,008 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ad1debe-53ce-4124-87d7-ab0ceba928d3/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-28 23:51:33,041 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-28 23:51:33,041 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-28 23:51:33,041 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-28 23:51:33,042 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-28 23:51:33,042 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-28 23:51:33,042 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-28 23:51:33,042 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-28 23:51:33,043 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-28 23:51:33,043 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-28 23:51:33,043 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-28 23:51:33,043 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-28 23:51:33,044 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-28 23:51:33,044 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-28 23:51:33,044 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-28 23:51:33,045 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-28 23:51:33,045 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-28 23:51:33,045 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-28 23:51:33,045 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-28 23:51:33,045 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-28 23:51:33,046 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-28 23:51:33,046 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-28 23:51:33,047 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-28 23:51:33,189 INFO L241 CfgBuilder]: Building ICFG [2023-11-28 23:51:33,192 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-28 23:51:33,365 INFO L282 CfgBuilder]: Performing block encoding [2023-11-28 23:51:33,460 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-28 23:51:33,460 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-28 23:51:33,460 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:51:33 BoogieIcfgContainer [2023-11-28 23:51:33,461 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-28 23:51:33,464 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-28 23:51:33,464 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-28 23:51:33,468 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-28 23:51:33,468 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 11:51:32" (1/3) ... [2023-11-28 23:51:33,469 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4efed917 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 11:51:33, skipping insertion in model container [2023-11-28 23:51:33,469 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:51:32" (2/3) ... [2023-11-28 23:51:33,469 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4efed917 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 11:51:33, skipping insertion in model container [2023-11-28 23:51:33,469 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:51:33" (3/3) ... [2023-11-28 23:51:33,471 INFO L112 eAbstractionObserver]: Analyzing ICFG safe008_tso.i [2023-11-28 23:51:33,480 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-28 23:51:33,492 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-28 23:51:33,492 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-28 23:51:33,493 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-28 23:51:33,532 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-28 23:51:33,568 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 47 places, 38 transitions, 88 flow [2023-11-28 23:51:33,597 INFO L124 PetriNetUnfolderBase]: 1/35 cut-off events. [2023-11-28 23:51:33,597 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-28 23:51:33,601 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45 conditions, 35 events. 1/35 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 59 event pairs, 0 based on Foata normal form. 0/33 useless extension candidates. Maximal degree in co-relation 37. Up to 2 conditions per place. [2023-11-28 23:51:33,601 INFO L82 GeneralOperation]: Start removeDead. Operand has 47 places, 38 transitions, 88 flow [2023-11-28 23:51:33,604 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 42 places, 32 transitions, 73 flow [2023-11-28 23:51:33,615 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-28 23:51:33,623 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@3317e74a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-28 23:51:33,623 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-11-28 23:51:33,638 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-28 23:51:33,638 INFO L124 PetriNetUnfolderBase]: 0/31 cut-off events. [2023-11-28 23:51:33,638 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-28 23:51:33,638 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:51:33,639 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:51:33,639 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-28 23:51:33,645 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:51:33,645 INFO L85 PathProgramCache]: Analyzing trace with hash 899251850, now seen corresponding path program 1 times [2023-11-28 23:51:33,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:51:33,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75243868] [2023-11-28 23:51:33,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:51:33,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:51:33,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:51:34,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:51:34,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:51:34,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75243868] [2023-11-28 23:51:34,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75243868] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:51:34,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:51:34,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-28 23:51:34,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828951822] [2023-11-28 23:51:34,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:51:34,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-28 23:51:34,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:51:34,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-28 23:51:34,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-28 23:51:34,303 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 38 [2023-11-28 23:51:34,306 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 32 transitions, 73 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) [2023-11-28 23:51:34,306 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:51:34,306 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 38 [2023-11-28 23:51:34,307 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:51:34,678 INFO L124 PetriNetUnfolderBase]: 741/1472 cut-off events. [2023-11-28 23:51:34,678 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2023-11-28 23:51:34,686 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2682 conditions, 1472 events. 741/1472 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 10021 event pairs, 261 based on Foata normal form. 52/1484 useless extension candidates. Maximal degree in co-relation 2671. Up to 643 conditions per place. [2023-11-28 23:51:34,716 INFO L140 encePairwiseOnDemand]: 30/38 looper letters, 27 selfloop transitions, 5 changer transitions 29/75 dead transitions. [2023-11-28 23:51:34,717 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 75 transitions, 287 flow [2023-11-28 23:51:34,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-28 23:51:34,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-28 23:51:34,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 182 transitions. [2023-11-28 23:51:34,731 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6842105263157895 [2023-11-28 23:51:34,731 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 182 transitions. [2023-11-28 23:51:34,732 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 182 transitions. [2023-11-28 23:51:34,733 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:51:34,736 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 182 transitions. [2023-11-28 23:51:34,739 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 26.0) internal successors, (182), 7 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:51:34,743 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 38.0) internal successors, (304), 8 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:51:34,744 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 38.0) internal successors, (304), 8 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:51:34,746 INFO L175 Difference]: Start difference. First operand has 42 places, 32 transitions, 73 flow. Second operand 7 states and 182 transitions. [2023-11-28 23:51:34,747 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 75 transitions, 287 flow [2023-11-28 23:51:34,750 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 75 transitions, 282 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-28 23:51:34,753 INFO L231 Difference]: Finished difference. Result has 50 places, 35 transitions, 119 flow [2023-11-28 23:51:34,755 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=119, PETRI_PLACES=50, PETRI_TRANSITIONS=35} [2023-11-28 23:51:34,759 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 8 predicate places. [2023-11-28 23:51:34,759 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 35 transitions, 119 flow [2023-11-28 23:51:34,760 INFO L496 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) [2023-11-28 23:51:34,760 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:51:34,760 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:51:34,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-28 23:51:34,760 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-28 23:51:34,761 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:51:34,761 INFO L85 PathProgramCache]: Analyzing trace with hash -1932778367, now seen corresponding path program 1 times [2023-11-28 23:51:34,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:51:34,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870198349] [2023-11-28 23:51:34,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:51:34,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:51:34,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:51:34,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:51:34,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:51:34,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870198349] [2023-11-28 23:51:34,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870198349] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:51:34,966 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:51:34,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-28 23:51:34,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681672840] [2023-11-28 23:51:34,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:51:34,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-28 23:51:34,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:51:34,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-28 23:51:34,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-28 23:51:34,980 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 38 [2023-11-28 23:51:34,981 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 35 transitions, 119 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) [2023-11-28 23:51:34,981 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:51:34,981 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 38 [2023-11-28 23:51:34,981 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:51:35,352 INFO L124 PetriNetUnfolderBase]: 622/1331 cut-off events. [2023-11-28 23:51:35,352 INFO L125 PetriNetUnfolderBase]: For 1148/1151 co-relation queries the response was YES. [2023-11-28 23:51:35,356 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3403 conditions, 1331 events. 622/1331 cut-off events. For 1148/1151 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 9412 event pairs, 116 based on Foata normal form. 49/1353 useless extension candidates. Maximal degree in co-relation 3388. Up to 465 conditions per place. [2023-11-28 23:51:35,365 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 33 selfloop transitions, 5 changer transitions 40/92 dead transitions. [2023-11-28 23:51:35,366 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 92 transitions, 521 flow [2023-11-28 23:51:35,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-28 23:51:35,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-28 23:51:35,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 244 transitions. [2023-11-28 23:51:35,369 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6421052631578947 [2023-11-28 23:51:35,370 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 244 transitions. [2023-11-28 23:51:35,370 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 244 transitions. [2023-11-28 23:51:35,371 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:51:35,371 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 244 transitions. [2023-11-28 23:51:35,373 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 24.4) internal successors, (244), 10 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:51:35,376 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 38.0) internal successors, (418), 11 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:51:35,377 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 38.0) internal successors, (418), 11 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:51:35,377 INFO L175 Difference]: Start difference. First operand has 50 places, 35 transitions, 119 flow. Second operand 10 states and 244 transitions. [2023-11-28 23:51:35,377 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 92 transitions, 521 flow [2023-11-28 23:51:35,387 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 92 transitions, 490 flow, removed 7 selfloop flow, removed 3 redundant places. [2023-11-28 23:51:35,390 INFO L231 Difference]: Finished difference. Result has 61 places, 37 transitions, 164 flow [2023-11-28 23:51:35,390 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=164, PETRI_PLACES=61, PETRI_TRANSITIONS=37} [2023-11-28 23:51:35,391 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 19 predicate places. [2023-11-28 23:51:35,391 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 37 transitions, 164 flow [2023-11-28 23:51:35,392 INFO L496 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) [2023-11-28 23:51:35,392 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:51:35,392 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:51:35,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-28 23:51:35,393 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-28 23:51:35,394 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:51:35,394 INFO L85 PathProgramCache]: Analyzing trace with hash 2063782667, now seen corresponding path program 1 times [2023-11-28 23:51:35,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:51:35,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19013384] [2023-11-28 23:51:35,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:51:35,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:51:35,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:51:35,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:51:35,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:51:35,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19013384] [2023-11-28 23:51:35,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [19013384] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:51:35,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:51:35,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-28 23:51:35,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434816573] [2023-11-28 23:51:35,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:51:35,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-28 23:51:35,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:51:35,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-28 23:51:35,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-28 23:51:35,605 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 38 [2023-11-28 23:51:35,606 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 37 transitions, 164 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) [2023-11-28 23:51:35,606 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:51:35,606 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 38 [2023-11-28 23:51:35,606 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:51:35,926 INFO L124 PetriNetUnfolderBase]: 510/1134 cut-off events. [2023-11-28 23:51:35,926 INFO L125 PetriNetUnfolderBase]: For 2209/2209 co-relation queries the response was YES. [2023-11-28 23:51:35,931 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3214 conditions, 1134 events. 510/1134 cut-off events. For 2209/2209 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 7837 event pairs, 128 based on Foata normal form. 32/1137 useless extension candidates. Maximal degree in co-relation 3191. Up to 451 conditions per place. [2023-11-28 23:51:35,939 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 34 selfloop transitions, 10 changer transitions 30/88 dead transitions. [2023-11-28 23:51:35,939 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 88 transitions, 584 flow [2023-11-28 23:51:35,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-28 23:51:35,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-28 23:51:35,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 241 transitions. [2023-11-28 23:51:35,943 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6342105263157894 [2023-11-28 23:51:35,943 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 241 transitions. [2023-11-28 23:51:35,944 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 241 transitions. [2023-11-28 23:51:35,944 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:51:35,944 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 241 transitions. [2023-11-28 23:51:35,947 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 24.1) internal successors, (241), 10 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:51:35,949 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 38.0) internal successors, (418), 11 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:51:35,949 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 38.0) internal successors, (418), 11 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:51:35,950 INFO L175 Difference]: Start difference. First operand has 61 places, 37 transitions, 164 flow. Second operand 10 states and 241 transitions. [2023-11-28 23:51:35,950 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 88 transitions, 584 flow [2023-11-28 23:51:35,959 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 88 transitions, 537 flow, removed 21 selfloop flow, removed 3 redundant places. [2023-11-28 23:51:35,961 INFO L231 Difference]: Finished difference. Result has 69 places, 42 transitions, 246 flow [2023-11-28 23:51:35,962 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=149, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=246, PETRI_PLACES=69, PETRI_TRANSITIONS=42} [2023-11-28 23:51:35,963 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 27 predicate places. [2023-11-28 23:51:35,963 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 42 transitions, 246 flow [2023-11-28 23:51:35,963 INFO L496 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) [2023-11-28 23:51:35,964 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:51:35,964 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:51:35,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-28 23:51:35,964 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-28 23:51:35,965 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:51:35,965 INFO L85 PathProgramCache]: Analyzing trace with hash -1869270678, now seen corresponding path program 1 times [2023-11-28 23:51:35,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:51:35,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450170277] [2023-11-28 23:51:35,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:51:35,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:51:35,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:51:36,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:51:36,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:51:36,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450170277] [2023-11-28 23:51:36,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450170277] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:51:36,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:51:36,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-28 23:51:36,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87782732] [2023-11-28 23:51:36,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:51:36,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-28 23:51:36,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:51:36,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-28 23:51:36,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-28 23:51:36,158 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 38 [2023-11-28 23:51:36,159 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 42 transitions, 246 flow. Second operand has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:51:36,159 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:51:36,159 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 38 [2023-11-28 23:51:36,160 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:51:36,451 INFO L124 PetriNetUnfolderBase]: 442/916 cut-off events. [2023-11-28 23:51:36,451 INFO L125 PetriNetUnfolderBase]: For 2332/2332 co-relation queries the response was YES. [2023-11-28 23:51:36,455 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2956 conditions, 916 events. 442/916 cut-off events. For 2332/2332 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 5897 event pairs, 94 based on Foata normal form. 16/911 useless extension candidates. Maximal degree in co-relation 2926. Up to 354 conditions per place. [2023-11-28 23:51:36,463 INFO L140 encePairwiseOnDemand]: 30/38 looper letters, 31 selfloop transitions, 10 changer transitions 22/77 dead transitions. [2023-11-28 23:51:36,463 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 77 transitions, 536 flow [2023-11-28 23:51:36,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-28 23:51:36,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-28 23:51:36,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 228 transitions. [2023-11-28 23:51:36,465 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6 [2023-11-28 23:51:36,465 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 228 transitions. [2023-11-28 23:51:36,465 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 228 transitions. [2023-11-28 23:51:36,466 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:51:36,466 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 228 transitions. [2023-11-28 23:51:36,467 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 22.8) internal successors, (228), 10 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:51:36,468 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 38.0) internal successors, (418), 11 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:51:36,469 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 38.0) internal successors, (418), 11 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:51:36,469 INFO L175 Difference]: Start difference. First operand has 69 places, 42 transitions, 246 flow. Second operand 10 states and 228 transitions. [2023-11-28 23:51:36,469 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 77 transitions, 536 flow [2023-11-28 23:51:36,481 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 77 transitions, 472 flow, removed 32 selfloop flow, removed 10 redundant places. [2023-11-28 23:51:36,483 INFO L231 Difference]: Finished difference. Result has 69 places, 42 transitions, 249 flow [2023-11-28 23:51:36,483 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=249, PETRI_PLACES=69, PETRI_TRANSITIONS=42} [2023-11-28 23:51:36,484 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 27 predicate places. [2023-11-28 23:51:36,484 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 42 transitions, 249 flow [2023-11-28 23:51:36,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:51:36,485 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:51:36,485 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:51:36,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-28 23:51:36,485 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-28 23:51:36,486 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:51:36,486 INFO L85 PathProgramCache]: Analyzing trace with hash -1337605860, now seen corresponding path program 1 times [2023-11-28 23:51:36,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:51:36,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534264945] [2023-11-28 23:51:36,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:51:36,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:51:36,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:51:36,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:51:36,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:51:36,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534264945] [2023-11-28 23:51:36,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [534264945] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:51:36,660 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:51:36,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-28 23:51:36,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058240097] [2023-11-28 23:51:36,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:51:36,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-28 23:51:36,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:51:36,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-28 23:51:36,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-28 23:51:36,676 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 38 [2023-11-28 23:51:36,677 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 42 transitions, 249 flow. Second operand has 7 states, 7 states have (on average 18.0) internal successors, (126), 7 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:51:36,677 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:51:36,677 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 38 [2023-11-28 23:51:36,677 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:51:37,031 INFO L124 PetriNetUnfolderBase]: 721/1503 cut-off events. [2023-11-28 23:51:37,032 INFO L125 PetriNetUnfolderBase]: For 3792/3792 co-relation queries the response was YES. [2023-11-28 23:51:37,037 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4550 conditions, 1503 events. 721/1503 cut-off events. For 3792/3792 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 10897 event pairs, 142 based on Foata normal form. 36/1517 useless extension candidates. Maximal degree in co-relation 4521. Up to 338 conditions per place. [2023-11-28 23:51:37,043 INFO L140 encePairwiseOnDemand]: 30/38 looper letters, 35 selfloop transitions, 6 changer transitions 40/94 dead transitions. [2023-11-28 23:51:37,044 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 94 transitions, 744 flow [2023-11-28 23:51:37,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-28 23:51:37,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-28 23:51:37,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 213 transitions. [2023-11-28 23:51:37,045 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6228070175438597 [2023-11-28 23:51:37,046 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 213 transitions. [2023-11-28 23:51:37,046 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 213 transitions. [2023-11-28 23:51:37,046 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:51:37,046 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 213 transitions. [2023-11-28 23:51:37,047 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 23.666666666666668) internal successors, (213), 9 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:51:37,048 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 38.0) internal successors, (380), 10 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:51:37,048 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 38.0) internal successors, (380), 10 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:51:37,049 INFO L175 Difference]: Start difference. First operand has 69 places, 42 transitions, 249 flow. Second operand 9 states and 213 transitions. [2023-11-28 23:51:37,049 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 94 transitions, 744 flow [2023-11-28 23:51:37,068 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 94 transitions, 666 flow, removed 18 selfloop flow, removed 9 redundant places. [2023-11-28 23:51:37,069 INFO L231 Difference]: Finished difference. Result has 68 places, 36 transitions, 192 flow [2023-11-28 23:51:37,070 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=217, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=192, PETRI_PLACES=68, PETRI_TRANSITIONS=36} [2023-11-28 23:51:37,071 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 26 predicate places. [2023-11-28 23:51:37,071 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 36 transitions, 192 flow [2023-11-28 23:51:37,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.0) internal successors, (126), 7 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:51:37,071 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:51:37,071 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:51:37,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-28 23:51:37,072 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-28 23:51:37,072 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:51:37,072 INFO L85 PathProgramCache]: Analyzing trace with hash -13175203, now seen corresponding path program 1 times [2023-11-28 23:51:37,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:51:37,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151977532] [2023-11-28 23:51:37,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:51:37,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:51:37,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:51:37,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:51:37,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:51:37,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151977532] [2023-11-28 23:51:37,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1151977532] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:51:37,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:51:37,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-28 23:51:37,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423857720] [2023-11-28 23:51:37,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:51:37,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-28 23:51:37,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:51:37,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-28 23:51:37,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-28 23:51:37,263 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 38 [2023-11-28 23:51:37,264 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 36 transitions, 192 flow. Second operand has 7 states, 7 states have (on average 18.0) internal successors, (126), 7 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:51:37,264 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:51:37,264 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 38 [2023-11-28 23:51:37,264 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:51:37,561 INFO L124 PetriNetUnfolderBase]: 488/1064 cut-off events. [2023-11-28 23:51:37,561 INFO L125 PetriNetUnfolderBase]: For 2475/2475 co-relation queries the response was YES. [2023-11-28 23:51:37,565 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3054 conditions, 1064 events. 488/1064 cut-off events. For 2475/2475 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 7172 event pairs, 96 based on Foata normal form. 30/1072 useless extension candidates. Maximal degree in co-relation 3025. Up to 250 conditions per place. [2023-11-28 23:51:37,569 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 30 selfloop transitions, 4 changer transitions 35/82 dead transitions. [2023-11-28 23:51:37,569 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 82 transitions, 571 flow [2023-11-28 23:51:37,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-28 23:51:37,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-28 23:51:37,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 211 transitions. [2023-11-28 23:51:37,571 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6169590643274854 [2023-11-28 23:51:37,571 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 211 transitions. [2023-11-28 23:51:37,571 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 211 transitions. [2023-11-28 23:51:37,572 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:51:37,572 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 211 transitions. [2023-11-28 23:51:37,573 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 23.444444444444443) internal successors, (211), 9 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:51:37,574 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 38.0) internal successors, (380), 10 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:51:37,574 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 38.0) internal successors, (380), 10 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:51:37,574 INFO L175 Difference]: Start difference. First operand has 68 places, 36 transitions, 192 flow. Second operand 9 states and 211 transitions. [2023-11-28 23:51:37,574 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 82 transitions, 571 flow [2023-11-28 23:51:37,581 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 82 transitions, 420 flow, removed 32 selfloop flow, removed 15 redundant places. [2023-11-28 23:51:37,582 INFO L231 Difference]: Finished difference. Result has 63 places, 32 transitions, 126 flow [2023-11-28 23:51:37,583 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=126, PETRI_PLACES=63, PETRI_TRANSITIONS=32} [2023-11-28 23:51:37,583 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 21 predicate places. [2023-11-28 23:51:37,584 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 32 transitions, 126 flow [2023-11-28 23:51:37,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.0) internal successors, (126), 7 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:51:37,584 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:51:37,584 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:51:37,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-28 23:51:37,585 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-28 23:51:37,585 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:51:37,585 INFO L85 PathProgramCache]: Analyzing trace with hash -380245367, now seen corresponding path program 1 times [2023-11-28 23:51:37,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:51:37,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187961444] [2023-11-28 23:51:37,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:51:37,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:51:37,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:51:37,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:51:37,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:51:37,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187961444] [2023-11-28 23:51:37,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1187961444] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:51:37,701 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:51:37,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-28 23:51:37,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199498780] [2023-11-28 23:51:37,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:51:37,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-28 23:51:37,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:51:37,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-28 23:51:37,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-28 23:51:37,711 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 38 [2023-11-28 23:51:37,711 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 32 transitions, 126 flow. Second operand has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:51:37,711 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:51:37,712 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 38 [2023-11-28 23:51:37,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:51:37,826 INFO L124 PetriNetUnfolderBase]: 306/614 cut-off events. [2023-11-28 23:51:37,826 INFO L125 PetriNetUnfolderBase]: For 228/238 co-relation queries the response was YES. [2023-11-28 23:51:37,828 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1338 conditions, 614 events. 306/614 cut-off events. For 228/238 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 3220 event pairs, 74 based on Foata normal form. 27/608 useless extension candidates. Maximal degree in co-relation 1314. Up to 261 conditions per place. [2023-11-28 23:51:37,831 INFO L140 encePairwiseOnDemand]: 32/38 looper letters, 23 selfloop transitions, 4 changer transitions 4/47 dead transitions. [2023-11-28 23:51:37,831 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 47 transitions, 222 flow [2023-11-28 23:51:37,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-28 23:51:37,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-28 23:51:37,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 113 transitions. [2023-11-28 23:51:37,833 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.743421052631579 [2023-11-28 23:51:37,833 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 113 transitions. [2023-11-28 23:51:37,833 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 113 transitions. [2023-11-28 23:51:37,834 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:51:37,834 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 113 transitions. [2023-11-28 23:51:37,835 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 28.25) internal successors, (113), 4 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) [2023-11-28 23:51:37,835 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 38.0) internal successors, (190), 5 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:51:37,836 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 38.0) internal successors, (190), 5 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:51:37,836 INFO L175 Difference]: Start difference. First operand has 63 places, 32 transitions, 126 flow. Second operand 4 states and 113 transitions. [2023-11-28 23:51:37,836 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 47 transitions, 222 flow [2023-11-28 23:51:37,838 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 47 transitions, 181 flow, removed 11 selfloop flow, removed 14 redundant places. [2023-11-28 23:51:37,840 INFO L231 Difference]: Finished difference. Result has 50 places, 34 transitions, 113 flow [2023-11-28 23:51:37,840 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=85, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=113, PETRI_PLACES=50, PETRI_TRANSITIONS=34} [2023-11-28 23:51:37,841 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 8 predicate places. [2023-11-28 23:51:37,841 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 34 transitions, 113 flow [2023-11-28 23:51:37,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:51:37,841 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:51:37,841 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:51:37,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-28 23:51:37,842 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-28 23:51:37,842 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:51:37,842 INFO L85 PathProgramCache]: Analyzing trace with hash 673180884, now seen corresponding path program 1 times [2023-11-28 23:51:37,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:51:37,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005484624] [2023-11-28 23:51:37,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:51:37,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:51:37,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:51:37,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:51:37,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:51:37,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005484624] [2023-11-28 23:51:37,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1005484624] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:51:37,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:51:37,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-28 23:51:37,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080198429] [2023-11-28 23:51:37,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:51:37,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-28 23:51:37,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:51:37,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-28 23:51:37,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-28 23:51:37,971 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 38 [2023-11-28 23:51:37,971 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 34 transitions, 113 flow. Second operand has 5 states, 5 states have (on average 22.2) internal successors, (111), 5 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:51:37,972 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:51:37,972 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 38 [2023-11-28 23:51:37,972 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:51:38,085 INFO L124 PetriNetUnfolderBase]: 226/453 cut-off events. [2023-11-28 23:51:38,085 INFO L125 PetriNetUnfolderBase]: For 165/242 co-relation queries the response was YES. [2023-11-28 23:51:38,087 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1102 conditions, 453 events. 226/453 cut-off events. For 165/242 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2019 event pairs, 22 based on Foata normal form. 27/458 useless extension candidates. Maximal degree in co-relation 1088. Up to 176 conditions per place. [2023-11-28 23:51:38,088 INFO L140 encePairwiseOnDemand]: 32/38 looper letters, 24 selfloop transitions, 6 changer transitions 8/54 dead transitions. [2023-11-28 23:51:38,089 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 54 transitions, 250 flow [2023-11-28 23:51:38,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-28 23:51:38,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-28 23:51:38,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 140 transitions. [2023-11-28 23:51:38,090 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7368421052631579 [2023-11-28 23:51:38,093 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 140 transitions. [2023-11-28 23:51:38,093 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 140 transitions. [2023-11-28 23:51:38,093 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:51:38,093 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 140 transitions. [2023-11-28 23:51:38,094 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 28.0) internal successors, (140), 5 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:51:38,095 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 38.0) internal successors, (228), 6 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:51:38,095 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 38.0) internal successors, (228), 6 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:51:38,095 INFO L175 Difference]: Start difference. First operand has 50 places, 34 transitions, 113 flow. Second operand 5 states and 140 transitions. [2023-11-28 23:51:38,101 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 54 transitions, 250 flow [2023-11-28 23:51:38,102 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 54 transitions, 241 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-11-28 23:51:38,103 INFO L231 Difference]: Finished difference. Result has 54 places, 34 transitions, 131 flow [2023-11-28 23:51:38,104 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=131, PETRI_PLACES=54, PETRI_TRANSITIONS=34} [2023-11-28 23:51:38,104 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 12 predicate places. [2023-11-28 23:51:38,104 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 34 transitions, 131 flow [2023-11-28 23:51:38,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.2) internal successors, (111), 5 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:51:38,105 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-28 23:51:38,105 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:51:38,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-28 23:51:38,106 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-28 23:51:38,106 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 23:51:38,106 INFO L85 PathProgramCache]: Analyzing trace with hash -1802118523, now seen corresponding path program 1 times [2023-11-28 23:51:38,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 23:51:38,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264007745] [2023-11-28 23:51:38,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 23:51:38,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 23:51:38,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 23:51:38,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 23:51:38,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 23:51:38,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264007745] [2023-11-28 23:51:38,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1264007745] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 23:51:38,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 23:51:38,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-28 23:51:38,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263407564] [2023-11-28 23:51:38,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 23:51:38,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-28 23:51:38,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 23:51:38,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-28 23:51:38,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-28 23:51:38,255 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 38 [2023-11-28 23:51:38,255 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 34 transitions, 131 flow. Second operand has 6 states, 6 states have (on average 22.0) internal successors, (132), 6 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:51:38,255 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-28 23:51:38,255 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 38 [2023-11-28 23:51:38,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-28 23:51:38,355 INFO L124 PetriNetUnfolderBase]: 104/211 cut-off events. [2023-11-28 23:51:38,355 INFO L125 PetriNetUnfolderBase]: For 237/331 co-relation queries the response was YES. [2023-11-28 23:51:38,355 INFO L83 FinitePrefix]: Finished finitePrefix Result has 594 conditions, 211 events. 104/211 cut-off events. For 237/331 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 663 event pairs, 2 based on Foata normal form. 16/217 useless extension candidates. Maximal degree in co-relation 578. Up to 56 conditions per place. [2023-11-28 23:51:38,356 INFO L140 encePairwiseOnDemand]: 32/38 looper letters, 0 selfloop transitions, 0 changer transitions 47/47 dead transitions. [2023-11-28 23:51:38,356 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 47 transitions, 231 flow [2023-11-28 23:51:38,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-28 23:51:38,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-28 23:51:38,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 156 transitions. [2023-11-28 23:51:38,358 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6842105263157895 [2023-11-28 23:51:38,358 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 156 transitions. [2023-11-28 23:51:38,358 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 156 transitions. [2023-11-28 23:51:38,358 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-28 23:51:38,358 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 156 transitions. [2023-11-28 23:51:38,359 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 26.0) internal successors, (156), 6 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:51:38,360 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 38.0) internal successors, (266), 7 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:51:38,360 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 38.0) internal successors, (266), 7 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:51:38,360 INFO L175 Difference]: Start difference. First operand has 54 places, 34 transitions, 131 flow. Second operand 6 states and 156 transitions. [2023-11-28 23:51:38,360 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 47 transitions, 231 flow [2023-11-28 23:51:38,361 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 47 transitions, 206 flow, removed 3 selfloop flow, removed 6 redundant places. [2023-11-28 23:51:38,362 INFO L231 Difference]: Finished difference. Result has 49 places, 0 transitions, 0 flow [2023-11-28 23:51:38,362 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=97, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=49, PETRI_TRANSITIONS=0} [2023-11-28 23:51:38,363 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 7 predicate places. [2023-11-28 23:51:38,363 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 0 transitions, 0 flow [2023-11-28 23:51:38,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.0) internal successors, (132), 6 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-28 23:51:38,366 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-11-28 23:51:38,367 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-11-28 23:51:38,367 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-11-28 23:51:38,367 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-11-28 23:51:38,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-28 23:51:38,368 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 23:51:38,371 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-28 23:51:38,372 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-28 23:51:38,377 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 11:51:38 BasicIcfg [2023-11-28 23:51:38,378 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-28 23:51:38,378 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-28 23:51:38,378 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-28 23:51:38,379 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-28 23:51:38,379 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:51:33" (3/4) ... [2023-11-28 23:51:38,381 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-28 23:51:38,385 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2023-11-28 23:51:38,385 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2023-11-28 23:51:38,385 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2023-11-28 23:51:38,390 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 36 nodes and edges [2023-11-28 23:51:38,390 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2023-11-28 23:51:38,390 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-28 23:51:38,391 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-11-28 23:51:38,476 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ad1debe-53ce-4124-87d7-ab0ceba928d3/bin/uautomizer-verify-BQ2R08f2Ya/witness.graphml [2023-11-28 23:51:38,476 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ad1debe-53ce-4124-87d7-ab0ceba928d3/bin/uautomizer-verify-BQ2R08f2Ya/witness.yml [2023-11-28 23:51:38,477 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-28 23:51:38,477 INFO L158 Benchmark]: Toolchain (without parser) took 6129.14ms. Allocated memory was 113.2MB in the beginning and 207.6MB in the end (delta: 94.4MB). Free memory was 68.0MB in the beginning and 121.7MB in the end (delta: -53.6MB). Peak memory consumption was 41.2MB. Max. memory is 16.1GB. [2023-11-28 23:51:38,478 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 113.2MB. Free memory is still 88.9MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-28 23:51:38,478 INFO L158 Benchmark]: CACSL2BoogieTranslator took 522.22ms. Allocated memory was 113.2MB in the beginning and 172.0MB in the end (delta: 58.7MB). Free memory was 67.8MB in the beginning and 137.3MB in the end (delta: -69.5MB). Peak memory consumption was 24.6MB. Max. memory is 16.1GB. [2023-11-28 23:51:38,479 INFO L158 Benchmark]: Boogie Procedure Inliner took 48.66ms. Allocated memory is still 172.0MB. Free memory was 137.3MB in the beginning and 135.4MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-28 23:51:38,479 INFO L158 Benchmark]: Boogie Preprocessor took 50.70ms. Allocated memory is still 172.0MB. Free memory was 135.4MB in the beginning and 133.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-28 23:51:38,480 INFO L158 Benchmark]: RCFGBuilder took 487.78ms. Allocated memory is still 172.0MB. Free memory was 133.3MB in the beginning and 111.5MB in the end (delta: 21.8MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-28 23:51:38,480 INFO L158 Benchmark]: TraceAbstraction took 4914.06ms. Allocated memory was 172.0MB in the beginning and 207.6MB in the end (delta: 35.7MB). Free memory was 111.0MB in the beginning and 125.9MB in the end (delta: -14.8MB). Peak memory consumption was 20.8MB. Max. memory is 16.1GB. [2023-11-28 23:51:38,480 INFO L158 Benchmark]: Witness Printer took 98.37ms. Allocated memory is still 207.6MB. Free memory was 125.9MB in the beginning and 121.7MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-28 23:51:38,482 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 113.2MB. Free memory is still 88.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 522.22ms. Allocated memory was 113.2MB in the beginning and 172.0MB in the end (delta: 58.7MB). Free memory was 67.8MB in the beginning and 137.3MB in the end (delta: -69.5MB). Peak memory consumption was 24.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 48.66ms. Allocated memory is still 172.0MB. Free memory was 137.3MB in the beginning and 135.4MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 50.70ms. Allocated memory is still 172.0MB. Free memory was 135.4MB in the beginning and 133.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 487.78ms. Allocated memory is still 172.0MB. Free memory was 133.3MB in the beginning and 111.5MB in the end (delta: 21.8MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * TraceAbstraction took 4914.06ms. Allocated memory was 172.0MB in the beginning and 207.6MB in the end (delta: 35.7MB). Free memory was 111.0MB in the beginning and 125.9MB in the end (delta: -14.8MB). Peak memory consumption was 20.8MB. Max. memory is 16.1GB. * Witness Printer took 98.37ms. Allocated memory is still 207.6MB. Free memory was 125.9MB in the beginning and 121.7MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. 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, 62 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: 4.8s, OverallIterations: 9, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 431 SdHoareTripleChecker+Valid, 0.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 405 mSDsluCounter, 243 SdHoareTripleChecker+Invalid, 0.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 184 mSDsCounter, 29 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 770 IncrementalHoareTripleChecker+Invalid, 799 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 29 mSolverCounterUnsat, 59 mSDtfsCounter, 770 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 77 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=249occurred in iteration=4, InterpolantAutomatonStates: 70, 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, 0.1s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 176 NumberOfCodeBlocks, 176 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 167 ConstructedInterpolants, 0 QuantifiedInterpolants, 721 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! [2023-11-28 23:51:38,505 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ad1debe-53ce-4124-87d7-ab0ceba928d3/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE