./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-ext/29_conditionals_vs.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1eac016-74bb-4b07-8341-97ca417b6ecd/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1eac016-74bb-4b07-8341-97ca417b6ecd/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1eac016-74bb-4b07-8341-97ca417b6ecd/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1eac016-74bb-4b07-8341-97ca417b6ecd/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-ext/29_conditionals_vs.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1eac016-74bb-4b07-8341-97ca417b6ecd/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1eac016-74bb-4b07-8341-97ca417b6ecd/bin/uautomizer-verify-aQ6SnzHsRB --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 c3f647420f42d7fdb333957b618cdd528a4c5a4cecdb35105a1a2630df70b3d6 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 02:42:05,357 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 02:42:05,458 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1eac016-74bb-4b07-8341-97ca417b6ecd/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-28 02:42:05,468 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 02:42:05,468 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 02:42:05,499 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 02:42:05,500 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 02:42:05,500 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 02:42:05,500 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 02:42:05,500 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 02:42:05,500 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 02:42:05,500 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 02:42:05,501 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 02:42:05,501 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 02:42:05,501 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 02:42:05,501 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 02:42:05,501 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 02:42:05,501 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 02:42:05,501 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 02:42:05,501 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 02:42:05,501 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 02:42:05,501 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 02:42:05,502 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 02:42:05,502 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 02:42:05,502 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 02:42:05,502 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 02:42:05,502 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 02:42:05,502 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 02:42:05,502 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 02:42:05,502 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:42:05,502 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:42:05,502 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:42:05,503 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:42:05,503 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 02:42:05,503 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:42:05,503 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:42:05,503 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:42:05,503 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:42:05,503 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 02:42:05,503 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 02:42:05,503 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 02:42:05,503 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 02:42:05,504 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 02:42:05,504 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 02:42:05,504 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 02:42:05,504 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 02:42:05,504 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 02:42:05,504 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 02:42:05,504 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1eac016-74bb-4b07-8341-97ca417b6ecd/bin/uautomizer-verify-aQ6SnzHsRB 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 -> c3f647420f42d7fdb333957b618cdd528a4c5a4cecdb35105a1a2630df70b3d6 [2024-11-28 02:42:05,819 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 02:42:05,828 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 02:42:05,831 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 02:42:05,832 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 02:42:05,832 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 02:42:05,834 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1eac016-74bb-4b07-8341-97ca417b6ecd/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/pthread-ext/29_conditionals_vs.i [2024-11-28 02:42:08,731 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1eac016-74bb-4b07-8341-97ca417b6ecd/bin/uautomizer-verify-aQ6SnzHsRB/data/b45197bc8/986c22838e4e40f19e605abdaaecb83f/FLAG68815a8c7 [2024-11-28 02:42:09,080 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 02:42:09,081 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1eac016-74bb-4b07-8341-97ca417b6ecd/sv-benchmarks/c/pthread-ext/29_conditionals_vs.i [2024-11-28 02:42:09,107 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1eac016-74bb-4b07-8341-97ca417b6ecd/bin/uautomizer-verify-aQ6SnzHsRB/data/b45197bc8/986c22838e4e40f19e605abdaaecb83f/FLAG68815a8c7 [2024-11-28 02:42:09,302 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1eac016-74bb-4b07-8341-97ca417b6ecd/bin/uautomizer-verify-aQ6SnzHsRB/data/b45197bc8/986c22838e4e40f19e605abdaaecb83f [2024-11-28 02:42:09,305 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 02:42:09,308 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 02:42:09,310 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 02:42:09,310 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 02:42:09,316 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 02:42:09,319 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:42:09" (1/1) ... [2024-11-28 02:42:09,320 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45b096b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:42:09, skipping insertion in model container [2024-11-28 02:42:09,321 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:42:09" (1/1) ... [2024-11-28 02:42:09,366 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 02:42:09,770 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1eac016-74bb-4b07-8341-97ca417b6ecd/sv-benchmarks/c/pthread-ext/29_conditionals_vs.i[30422,30435] [2024-11-28 02:42:09,783 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:42:09,798 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 02:42:09,865 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1eac016-74bb-4b07-8341-97ca417b6ecd/sv-benchmarks/c/pthread-ext/29_conditionals_vs.i[30422,30435] [2024-11-28 02:42:09,868 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:42:09,907 INFO L204 MainTranslator]: Completed translation [2024-11-28 02:42:09,908 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:42:09 WrapperNode [2024-11-28 02:42:09,909 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 02:42:09,910 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 02:42:09,911 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 02:42:09,911 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 02:42:09,922 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:42:09" (1/1) ... [2024-11-28 02:42:09,938 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:42:09" (1/1) ... [2024-11-28 02:42:09,956 INFO L138 Inliner]: procedures = 169, calls = 11, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 57 [2024-11-28 02:42:09,957 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 02:42:09,958 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 02:42:09,958 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 02:42:09,958 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 02:42:09,964 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:42:09" (1/1) ... [2024-11-28 02:42:09,964 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:42:09" (1/1) ... [2024-11-28 02:42:09,966 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:42:09" (1/1) ... [2024-11-28 02:42:09,978 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-28 02:42:09,978 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:42:09" (1/1) ... [2024-11-28 02:42:09,978 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:42:09" (1/1) ... [2024-11-28 02:42:09,982 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:42:09" (1/1) ... [2024-11-28 02:42:09,983 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:42:09" (1/1) ... [2024-11-28 02:42:09,987 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:42:09" (1/1) ... [2024-11-28 02:42:09,988 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:42:09" (1/1) ... [2024-11-28 02:42:09,989 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:42:09" (1/1) ... [2024-11-28 02:42:09,991 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 02:42:09,991 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 02:42:09,992 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 02:42:09,992 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 02:42:09,993 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:42:09" (1/1) ... [2024-11-28 02:42:09,999 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:42:10,015 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1eac016-74bb-4b07-8341-97ca417b6ecd/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:42:10,028 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1eac016-74bb-4b07-8341-97ca417b6ecd/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 02:42:10,034 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a1eac016-74bb-4b07-8341-97ca417b6ecd/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 02:42:10,056 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-11-28 02:42:10,056 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-11-28 02:42:10,056 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 02:42:10,056 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 02:42:10,056 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 02:42:10,056 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 02:42:10,058 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-28 02:42:10,165 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 02:42:10,167 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 02:42:10,323 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-28 02:42:10,324 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 02:42:10,420 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 02:42:10,421 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-28 02:42:10,421 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:42:10 BoogieIcfgContainer [2024-11-28 02:42:10,421 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 02:42:10,424 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 02:42:10,425 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 02:42:10,430 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 02:42:10,431 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 02:42:09" (1/3) ... [2024-11-28 02:42:10,432 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10c10f3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:42:10, skipping insertion in model container [2024-11-28 02:42:10,432 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:42:09" (2/3) ... [2024-11-28 02:42:10,434 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10c10f3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:42:10, skipping insertion in model container [2024-11-28 02:42:10,435 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:42:10" (3/3) ... [2024-11-28 02:42:10,438 INFO L128 eAbstractionObserver]: Analyzing ICFG 29_conditionals_vs.i [2024-11-28 02:42:10,454 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 02:42:10,456 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 29_conditionals_vs.i that has 2 procedures, 16 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-28 02:42:10,456 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-28 02:42:10,523 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-28 02:42:10,568 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 19 places, 19 transitions, 42 flow [2024-11-28 02:42:10,603 INFO L124 PetriNetUnfolderBase]: 3/21 cut-off events. [2024-11-28 02:42:10,605 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-28 02:42:10,608 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25 conditions, 21 events. 3/21 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 19 event pairs, 0 based on Foata normal form. 0/15 useless extension candidates. Maximal degree in co-relation 16. Up to 3 conditions per place. [2024-11-28 02:42:10,609 INFO L82 GeneralOperation]: Start removeDead. Operand has 19 places, 19 transitions, 42 flow [2024-11-28 02:42:10,612 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 19 places, 19 transitions, 42 flow [2024-11-28 02:42:10,621 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 02:42:10,638 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@333a6852, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 02:42:10,639 INFO L334 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-11-28 02:42:10,648 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-28 02:42:10,649 INFO L124 PetriNetUnfolderBase]: 0/10 cut-off events. [2024-11-28 02:42:10,649 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-28 02:42:10,649 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:42:10,651 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-11-28 02:42:10,651 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:42:10,657 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:42:10,658 INFO L85 PathProgramCache]: Analyzing trace with hash 1500262881, now seen corresponding path program 1 times [2024-11-28 02:42:10,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:42:10,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903135595] [2024-11-28 02:42:10,668 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:42:10,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:42:10,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 02:42:10,771 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-28 02:42:10,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 02:42:10,800 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-28 02:42:10,802 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-11-28 02:42:10,804 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2024-11-28 02:42:10,806 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2024-11-28 02:42:10,806 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2024-11-28 02:42:10,807 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 02:42:10,807 INFO L422 BasicCegarLoop]: Path program histogram: [1] [2024-11-28 02:42:10,811 WARN L246 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-28 02:42:10,812 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-28 02:42:10,842 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-28 02:42:10,845 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 32 places, 33 transitions, 76 flow [2024-11-28 02:42:10,859 INFO L124 PetriNetUnfolderBase]: 6/38 cut-off events. [2024-11-28 02:42:10,859 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-28 02:42:10,860 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46 conditions, 38 events. 6/38 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 68 event pairs, 0 based on Foata normal form. 0/27 useless extension candidates. Maximal degree in co-relation 29. Up to 3 conditions per place. [2024-11-28 02:42:10,860 INFO L82 GeneralOperation]: Start removeDead. Operand has 32 places, 33 transitions, 76 flow [2024-11-28 02:42:10,861 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 32 places, 33 transitions, 76 flow [2024-11-28 02:42:10,863 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 02:42:10,864 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@333a6852, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 02:42:10,864 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-28 02:42:10,874 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-28 02:42:10,874 INFO L124 PetriNetUnfolderBase]: 3/23 cut-off events. [2024-11-28 02:42:10,874 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-28 02:42:10,874 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:42:10,874 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:42:10,875 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-11-28 02:42:10,875 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:42:10,876 INFO L85 PathProgramCache]: Analyzing trace with hash -1871518224, now seen corresponding path program 1 times [2024-11-28 02:42:10,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:42:10,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27633809] [2024-11-28 02:42:10,876 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:42:10,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:42:10,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:42:11,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:42:11,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:42:11,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27633809] [2024-11-28 02:42:11,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27633809] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:42:11,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:42:11,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 02:42:11,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947626717] [2024-11-28 02:42:11,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:42:11,140 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:42:11,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:42:11,192 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:42:11,193 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:42:11,213 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 33 [2024-11-28 02:42:11,215 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 33 transitions, 76 flow. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:42:11,216 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:42:11,216 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 33 [2024-11-28 02:42:11,218 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:42:11,562 INFO L124 PetriNetUnfolderBase]: 358/702 cut-off events. [2024-11-28 02:42:11,562 INFO L125 PetriNetUnfolderBase]: For 35/35 co-relation queries the response was YES. [2024-11-28 02:42:11,566 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1338 conditions, 702 events. 358/702 cut-off events. For 35/35 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 3521 event pairs, 70 based on Foata normal form. 57/711 useless extension candidates. Maximal degree in co-relation 921. Up to 255 conditions per place. [2024-11-28 02:42:11,572 INFO L140 encePairwiseOnDemand]: 26/33 looper letters, 34 selfloop transitions, 3 changer transitions 0/47 dead transitions. [2024-11-28 02:42:11,572 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 47 transitions, 188 flow [2024-11-28 02:42:11,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:42:11,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 02:42:11,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 85 transitions. [2024-11-28 02:42:11,592 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6439393939393939 [2024-11-28 02:42:11,594 INFO L175 Difference]: Start difference. First operand has 32 places, 33 transitions, 76 flow. Second operand 4 states and 85 transitions. [2024-11-28 02:42:11,594 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 47 transitions, 188 flow [2024-11-28 02:42:11,601 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 47 transitions, 188 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-28 02:42:11,605 INFO L231 Difference]: Finished difference. Result has 34 places, 29 transitions, 74 flow [2024-11-28 02:42:11,607 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=74, PETRI_PLACES=34, PETRI_TRANSITIONS=29} [2024-11-28 02:42:11,612 INFO L279 CegarLoopForPetriNet]: 32 programPoint places, 2 predicate places. [2024-11-28 02:42:11,613 INFO L471 AbstractCegarLoop]: Abstraction has has 34 places, 29 transitions, 74 flow [2024-11-28 02:42:11,613 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:42:11,613 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:42:11,614 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1] [2024-11-28 02:42:11,614 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 02:42:11,614 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-11-28 02:42:11,616 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:42:11,616 INFO L85 PathProgramCache]: Analyzing trace with hash 1915879752, now seen corresponding path program 1 times [2024-11-28 02:42:11,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:42:11,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334357427] [2024-11-28 02:42:11,617 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:42:11,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:42:11,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 02:42:11,646 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-28 02:42:11,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 02:42:11,656 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-28 02:42:11,656 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-11-28 02:42:11,656 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2024-11-28 02:42:11,657 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2024-11-28 02:42:11,657 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 4 remaining) [2024-11-28 02:42:11,657 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2024-11-28 02:42:11,657 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 02:42:11,657 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-28 02:42:11,658 WARN L246 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-28 02:42:11,658 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-11-28 02:42:11,687 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-28 02:42:11,689 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 45 places, 47 transitions, 112 flow [2024-11-28 02:42:11,699 INFO L124 PetriNetUnfolderBase]: 9/55 cut-off events. [2024-11-28 02:42:11,699 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-11-28 02:42:11,700 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68 conditions, 55 events. 9/55 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 124 event pairs, 0 based on Foata normal form. 0/39 useless extension candidates. Maximal degree in co-relation 45. Up to 4 conditions per place. [2024-11-28 02:42:11,700 INFO L82 GeneralOperation]: Start removeDead. Operand has 45 places, 47 transitions, 112 flow [2024-11-28 02:42:11,701 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 45 places, 47 transitions, 112 flow [2024-11-28 02:42:11,702 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 02:42:11,703 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@333a6852, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 02:42:11,703 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-11-28 02:42:11,707 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-28 02:42:11,708 INFO L124 PetriNetUnfolderBase]: 3/23 cut-off events. [2024-11-28 02:42:11,708 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-28 02:42:11,708 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:42:11,708 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:42:11,708 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-11-28 02:42:11,709 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:42:11,709 INFO L85 PathProgramCache]: Analyzing trace with hash -1808756500, now seen corresponding path program 1 times [2024-11-28 02:42:11,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:42:11,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723036065] [2024-11-28 02:42:11,709 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:42:11,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:42:11,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:42:11,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:42:11,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:42:11,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723036065] [2024-11-28 02:42:11,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1723036065] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:42:11,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:42:11,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 02:42:11,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628149988] [2024-11-28 02:42:11,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:42:11,856 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:42:11,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:42:11,858 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:42:11,858 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:42:11,872 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 47 [2024-11-28 02:42:11,872 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 47 transitions, 112 flow. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:42:11,873 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:42:11,873 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 47 [2024-11-28 02:42:11,873 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:42:12,734 INFO L124 PetriNetUnfolderBase]: 3454/5586 cut-off events. [2024-11-28 02:42:12,734 INFO L125 PetriNetUnfolderBase]: For 484/484 co-relation queries the response was YES. [2024-11-28 02:42:12,755 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10795 conditions, 5586 events. 3454/5586 cut-off events. For 484/484 co-relation queries the response was YES. Maximal size of possible extension queue 247. Compared 34864 event pairs, 736 based on Foata normal form. 564/5799 useless extension candidates. Maximal degree in co-relation 4764. Up to 2085 conditions per place. [2024-11-28 02:42:12,789 INFO L140 encePairwiseOnDemand]: 39/47 looper letters, 52 selfloop transitions, 3 changer transitions 0/72 dead transitions. [2024-11-28 02:42:12,789 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 72 transitions, 296 flow [2024-11-28 02:42:12,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:42:12,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 02:42:12,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 134 transitions. [2024-11-28 02:42:12,794 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7127659574468085 [2024-11-28 02:42:12,794 INFO L175 Difference]: Start difference. First operand has 45 places, 47 transitions, 112 flow. Second operand 4 states and 134 transitions. [2024-11-28 02:42:12,795 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 72 transitions, 296 flow [2024-11-28 02:42:12,798 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 72 transitions, 290 flow, removed 3 selfloop flow, removed 0 redundant places. [2024-11-28 02:42:12,800 INFO L231 Difference]: Finished difference. Result has 47 places, 42 transitions, 106 flow [2024-11-28 02:42:12,800 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=106, PETRI_PLACES=47, PETRI_TRANSITIONS=42} [2024-11-28 02:42:12,801 INFO L279 CegarLoopForPetriNet]: 45 programPoint places, 2 predicate places. [2024-11-28 02:42:12,802 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 42 transitions, 106 flow [2024-11-28 02:42:12,802 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:42:12,802 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:42:12,802 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:42:12,802 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-28 02:42:12,802 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-11-28 02:42:12,803 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:42:12,804 INFO L85 PathProgramCache]: Analyzing trace with hash -1808755477, now seen corresponding path program 1 times [2024-11-28 02:42:12,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:42:12,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344278998] [2024-11-28 02:42:12,805 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:42:12,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:42:12,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:42:12,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:42:12,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:42:12,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344278998] [2024-11-28 02:42:12,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [344278998] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:42:12,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:42:12,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 02:42:12,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714317222] [2024-11-28 02:42:12,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:42:12,916 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:42:12,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:42:12,917 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:42:12,917 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:42:12,934 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 47 [2024-11-28 02:42:12,934 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 42 transitions, 106 flow. Second operand has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:42:12,935 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:42:12,935 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 47 [2024-11-28 02:42:12,935 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:42:13,627 INFO L124 PetriNetUnfolderBase]: 3454/5328 cut-off events. [2024-11-28 02:42:13,627 INFO L125 PetriNetUnfolderBase]: For 397/397 co-relation queries the response was YES. [2024-11-28 02:42:13,639 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10724 conditions, 5328 events. 3454/5328 cut-off events. For 397/397 co-relation queries the response was YES. Maximal size of possible extension queue 229. Compared 30995 event pairs, 736 based on Foata normal form. 129/5214 useless extension candidates. Maximal degree in co-relation 8547. Up to 2085 conditions per place. [2024-11-28 02:42:13,664 INFO L140 encePairwiseOnDemand]: 44/47 looper letters, 53 selfloop transitions, 2 changer transitions 0/70 dead transitions. [2024-11-28 02:42:13,665 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 70 transitions, 290 flow [2024-11-28 02:42:13,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:42:13,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 02:42:13,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 120 transitions. [2024-11-28 02:42:13,668 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6382978723404256 [2024-11-28 02:42:13,669 INFO L175 Difference]: Start difference. First operand has 47 places, 42 transitions, 106 flow. Second operand 4 states and 120 transitions. [2024-11-28 02:42:13,669 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 70 transitions, 290 flow [2024-11-28 02:42:13,673 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 70 transitions, 287 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-28 02:42:13,674 INFO L231 Difference]: Finished difference. Result has 46 places, 40 transitions, 101 flow [2024-11-28 02:42:13,674 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=97, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=101, PETRI_PLACES=46, PETRI_TRANSITIONS=40} [2024-11-28 02:42:13,675 INFO L279 CegarLoopForPetriNet]: 45 programPoint places, 1 predicate places. [2024-11-28 02:42:13,678 INFO L471 AbstractCegarLoop]: Abstraction has has 46 places, 40 transitions, 101 flow [2024-11-28 02:42:13,678 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:42:13,678 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:42:13,679 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1] [2024-11-28 02:42:13,679 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-28 02:42:13,679 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-11-28 02:42:13,679 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:42:13,679 INFO L85 PathProgramCache]: Analyzing trace with hash 230408992, now seen corresponding path program 1 times [2024-11-28 02:42:13,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:42:13,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889998461] [2024-11-28 02:42:13,680 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:42:13,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:42:13,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 02:42:13,704 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-28 02:42:13,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 02:42:13,724 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-28 02:42:13,726 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-11-28 02:42:13,726 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2024-11-28 02:42:13,726 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2024-11-28 02:42:13,726 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 5 remaining) [2024-11-28 02:42:13,727 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2024-11-28 02:42:13,727 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2024-11-28 02:42:13,727 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-28 02:42:13,727 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2024-11-28 02:42:13,728 WARN L246 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-28 02:42:13,728 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-11-28 02:42:13,783 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-28 02:42:13,789 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 58 places, 61 transitions, 150 flow [2024-11-28 02:42:13,797 INFO L124 PetriNetUnfolderBase]: 12/72 cut-off events. [2024-11-28 02:42:13,797 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-11-28 02:42:13,798 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91 conditions, 72 events. 12/72 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 176 event pairs, 0 based on Foata normal form. 0/51 useless extension candidates. Maximal degree in co-relation 67. Up to 5 conditions per place. [2024-11-28 02:42:13,798 INFO L82 GeneralOperation]: Start removeDead. Operand has 58 places, 61 transitions, 150 flow [2024-11-28 02:42:13,799 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 58 places, 61 transitions, 150 flow [2024-11-28 02:42:13,801 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 02:42:13,803 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@333a6852, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 02:42:13,803 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-11-28 02:42:13,809 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-28 02:42:13,813 INFO L124 PetriNetUnfolderBase]: 3/25 cut-off events. [2024-11-28 02:42:13,813 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-28 02:42:13,813 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:42:13,813 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:42:13,814 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2024-11-28 02:42:13,814 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:42:13,814 INFO L85 PathProgramCache]: Analyzing trace with hash 1982857686, now seen corresponding path program 1 times [2024-11-28 02:42:13,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:42:13,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968392441] [2024-11-28 02:42:13,814 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:42:13,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:42:13,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:42:13,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:42:13,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:42:13,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968392441] [2024-11-28 02:42:13,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968392441] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:42:13,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:42:13,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 02:42:13,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480405202] [2024-11-28 02:42:13,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:42:13,887 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:42:13,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:42:13,887 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:42:13,887 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:42:13,899 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 61 [2024-11-28 02:42:13,899 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 61 transitions, 150 flow. Second operand has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:42:13,900 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:42:13,900 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 61 [2024-11-28 02:42:13,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:42:18,121 INFO L124 PetriNetUnfolderBase]: 28492/41307 cut-off events. [2024-11-28 02:42:18,121 INFO L125 PetriNetUnfolderBase]: For 5011/5011 co-relation queries the response was YES. [2024-11-28 02:42:18,238 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80861 conditions, 41307 events. 28492/41307 cut-off events. For 5011/5011 co-relation queries the response was YES. Maximal size of possible extension queue 1557. Compared 288657 event pairs, 6352 based on Foata normal form. 4892/44047 useless extension candidates. Maximal degree in co-relation 10947. Up to 15765 conditions per place. [2024-11-28 02:42:18,429 INFO L140 encePairwiseOnDemand]: 52/61 looper letters, 70 selfloop transitions, 3 changer transitions 0/97 dead transitions. [2024-11-28 02:42:18,429 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 97 transitions, 410 flow [2024-11-28 02:42:18,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:42:18,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 02:42:18,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 183 transitions. [2024-11-28 02:42:18,431 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.75 [2024-11-28 02:42:18,431 INFO L175 Difference]: Start difference. First operand has 58 places, 61 transitions, 150 flow. Second operand 4 states and 183 transitions. [2024-11-28 02:42:18,431 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 97 transitions, 410 flow [2024-11-28 02:42:18,437 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 97 transitions, 392 flow, removed 9 selfloop flow, removed 0 redundant places. [2024-11-28 02:42:18,438 INFO L231 Difference]: Finished difference. Result has 60 places, 55 transitions, 138 flow [2024-11-28 02:42:18,439 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=138, PETRI_PLACES=60, PETRI_TRANSITIONS=55} [2024-11-28 02:42:18,439 INFO L279 CegarLoopForPetriNet]: 58 programPoint places, 2 predicate places. [2024-11-28 02:42:18,440 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 55 transitions, 138 flow [2024-11-28 02:42:18,440 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:42:18,440 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:42:18,440 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:42:18,440 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-28 02:42:18,440 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2024-11-28 02:42:18,441 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:42:18,441 INFO L85 PathProgramCache]: Analyzing trace with hash 1982858709, now seen corresponding path program 1 times [2024-11-28 02:42:18,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:42:18,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733715741] [2024-11-28 02:42:18,442 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:42:18,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:42:18,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:42:18,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:42:18,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:42:18,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733715741] [2024-11-28 02:42:18,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1733715741] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:42:18,496 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:42:18,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 02:42:18,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101966039] [2024-11-28 02:42:18,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:42:18,497 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:42:18,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:42:18,497 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:42:18,497 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:42:18,510 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 61 [2024-11-28 02:42:18,510 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 55 transitions, 138 flow. Second operand has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:42:18,511 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:42:18,511 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 61 [2024-11-28 02:42:18,511 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:42:21,290 INFO L124 PetriNetUnfolderBase]: 28492/39753 cut-off events. [2024-11-28 02:42:21,290 INFO L125 PetriNetUnfolderBase]: For 2566/2566 co-relation queries the response was YES. [2024-11-28 02:42:21,511 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79926 conditions, 39753 events. 28492/39753 cut-off events. For 2566/2566 co-relation queries the response was YES. Maximal size of possible extension queue 1427. Compared 258305 event pairs, 6352 based on Foata normal form. 777/39029 useless extension candidates. Maximal degree in co-relation 65082. Up to 15765 conditions per place. [2024-11-28 02:42:21,663 INFO L140 encePairwiseOnDemand]: 58/61 looper letters, 71 selfloop transitions, 2 changer transitions 0/95 dead transitions. [2024-11-28 02:42:21,663 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 95 transitions, 392 flow [2024-11-28 02:42:21,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:42:21,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 02:42:21,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 166 transitions. [2024-11-28 02:42:21,665 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.680327868852459 [2024-11-28 02:42:21,665 INFO L175 Difference]: Start difference. First operand has 60 places, 55 transitions, 138 flow. Second operand 4 states and 166 transitions. [2024-11-28 02:42:21,665 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 95 transitions, 392 flow [2024-11-28 02:42:21,671 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 95 transitions, 389 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-28 02:42:21,673 INFO L231 Difference]: Finished difference. Result has 59 places, 53 transitions, 133 flow [2024-11-28 02:42:21,673 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=129, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=133, PETRI_PLACES=59, PETRI_TRANSITIONS=53} [2024-11-28 02:42:21,674 INFO L279 CegarLoopForPetriNet]: 58 programPoint places, 1 predicate places. [2024-11-28 02:42:21,674 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 53 transitions, 133 flow [2024-11-28 02:42:21,674 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:42:21,674 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:42:21,674 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:42:21,674 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-28 02:42:21,674 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2024-11-28 02:42:21,675 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:42:21,675 INFO L85 PathProgramCache]: Analyzing trace with hash 300923625, now seen corresponding path program 1 times [2024-11-28 02:42:21,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:42:21,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665547399] [2024-11-28 02:42:21,675 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:42:21,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:42:21,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:42:21,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:42:21,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:42:21,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665547399] [2024-11-28 02:42:21,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1665547399] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:42:21,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:42:21,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 02:42:21,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357710609] [2024-11-28 02:42:21,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:42:21,763 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:42:21,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:42:21,764 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:42:21,764 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:42:21,775 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 61 [2024-11-28 02:42:21,775 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 53 transitions, 133 flow. Second operand has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:42:21,775 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:42:21,776 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 61 [2024-11-28 02:42:21,776 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:42:25,207 INFO L124 PetriNetUnfolderBase]: 38482/55572 cut-off events. [2024-11-28 02:42:25,207 INFO L125 PetriNetUnfolderBase]: For 3976/3976 co-relation queries the response was YES. [2024-11-28 02:42:25,287 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109068 conditions, 55572 events. 38482/55572 cut-off events. For 3976/3976 co-relation queries the response was YES. Maximal size of possible extension queue 2215. Compared 402263 event pairs, 8611 based on Foata normal form. 0/51210 useless extension candidates. Maximal degree in co-relation 81252. Up to 21195 conditions per place. [2024-11-28 02:42:25,473 INFO L140 encePairwiseOnDemand]: 57/61 looper letters, 68 selfloop transitions, 3 changer transitions 0/92 dead transitions. [2024-11-28 02:42:25,474 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 92 transitions, 377 flow [2024-11-28 02:42:25,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:42:25,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 02:42:25,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 168 transitions. [2024-11-28 02:42:25,475 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6885245901639344 [2024-11-28 02:42:25,475 INFO L175 Difference]: Start difference. First operand has 59 places, 53 transitions, 133 flow. Second operand 4 states and 168 transitions. [2024-11-28 02:42:25,475 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 92 transitions, 377 flow [2024-11-28 02:42:25,482 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 92 transitions, 370 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-28 02:42:25,484 INFO L231 Difference]: Finished difference. Result has 60 places, 52 transitions, 134 flow [2024-11-28 02:42:25,485 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=134, PETRI_PLACES=60, PETRI_TRANSITIONS=52} [2024-11-28 02:42:25,486 INFO L279 CegarLoopForPetriNet]: 58 programPoint places, 2 predicate places. [2024-11-28 02:42:25,487 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 52 transitions, 134 flow [2024-11-28 02:42:25,487 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:42:25,487 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:42:25,487 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:42:25,487 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-28 02:42:25,488 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2024-11-28 02:42:25,488 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:42:25,488 INFO L85 PathProgramCache]: Analyzing trace with hash 300924648, now seen corresponding path program 1 times [2024-11-28 02:42:25,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:42:25,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770292] [2024-11-28 02:42:25,488 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:42:25,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:42:25,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:42:25,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:42:25,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:42:25,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770292] [2024-11-28 02:42:25,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770292] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:42:25,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:42:25,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 02:42:25,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409024692] [2024-11-28 02:42:25,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:42:25,565 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:42:25,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:42:25,566 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:42:25,566 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:42:25,578 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 61 [2024-11-28 02:42:25,578 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 52 transitions, 134 flow. Second operand has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:42:25,578 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:42:25,578 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 61 [2024-11-28 02:42:25,578 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:42:28,798 INFO L124 PetriNetUnfolderBase]: 38482/53508 cut-off events. [2024-11-28 02:42:28,798 INFO L125 PetriNetUnfolderBase]: For 3442/3442 co-relation queries the response was YES. [2024-11-28 02:42:28,879 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107517 conditions, 53508 events. 38482/53508 cut-off events. For 3442/3442 co-relation queries the response was YES. Maximal size of possible extension queue 2042. Compared 360563 event pairs, 8611 based on Foata normal form. 1032/51036 useless extension candidates. Maximal degree in co-relation 79704. Up to 21195 conditions per place. [2024-11-28 02:42:28,998 INFO L140 encePairwiseOnDemand]: 58/61 looper letters, 69 selfloop transitions, 2 changer transitions 0/90 dead transitions. [2024-11-28 02:42:28,998 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 90 transitions, 370 flow [2024-11-28 02:42:28,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:42:28,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 02:42:28,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 164 transitions. [2024-11-28 02:42:28,999 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6721311475409836 [2024-11-28 02:42:28,999 INFO L175 Difference]: Start difference. First operand has 60 places, 52 transitions, 134 flow. Second operand 4 states and 164 transitions. [2024-11-28 02:42:28,999 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 90 transitions, 370 flow [2024-11-28 02:42:29,012 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 90 transitions, 367 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-28 02:42:29,013 INFO L231 Difference]: Finished difference. Result has 59 places, 50 transitions, 129 flow [2024-11-28 02:42:29,013 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=61, PETRI_DIFFERENCE_MINUEND_FLOW=125, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=129, PETRI_PLACES=59, PETRI_TRANSITIONS=50} [2024-11-28 02:42:29,014 INFO L279 CegarLoopForPetriNet]: 58 programPoint places, 1 predicate places. [2024-11-28 02:42:29,014 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 50 transitions, 129 flow [2024-11-28 02:42:29,014 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:42:29,014 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:42:29,014 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1] [2024-11-28 02:42:29,014 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-28 02:42:29,014 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2024-11-28 02:42:29,015 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:42:29,015 INFO L85 PathProgramCache]: Analyzing trace with hash 306541869, now seen corresponding path program 1 times [2024-11-28 02:42:29,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:42:29,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270361239] [2024-11-28 02:42:29,015 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:42:29,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:42:29,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 02:42:29,026 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-28 02:42:29,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 02:42:29,036 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-28 02:42:29,036 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-11-28 02:42:29,036 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 6 remaining) [2024-11-28 02:42:29,036 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2024-11-28 02:42:29,037 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 6 remaining) [2024-11-28 02:42:29,037 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 6 remaining) [2024-11-28 02:42:29,037 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2024-11-28 02:42:29,037 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2024-11-28 02:42:29,037 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-28 02:42:29,037 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2024-11-28 02:42:29,038 WARN L246 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-28 02:42:29,038 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2024-11-28 02:42:29,072 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-28 02:42:29,074 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 71 places, 75 transitions, 190 flow [2024-11-28 02:42:29,080 INFO L124 PetriNetUnfolderBase]: 15/89 cut-off events. [2024-11-28 02:42:29,080 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2024-11-28 02:42:29,081 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115 conditions, 89 events. 15/89 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 234 event pairs, 0 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 90. Up to 6 conditions per place. [2024-11-28 02:42:29,081 INFO L82 GeneralOperation]: Start removeDead. Operand has 71 places, 75 transitions, 190 flow [2024-11-28 02:42:29,082 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 71 places, 75 transitions, 190 flow [2024-11-28 02:42:29,082 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 02:42:29,083 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@333a6852, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 02:42:29,083 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-11-28 02:42:29,085 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-28 02:42:29,085 INFO L124 PetriNetUnfolderBase]: 3/23 cut-off events. [2024-11-28 02:42:29,085 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-28 02:42:29,085 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:42:29,085 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:42:29,085 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2024-11-28 02:42:29,086 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:42:29,086 INFO L85 PathProgramCache]: Analyzing trace with hash -240365042, now seen corresponding path program 1 times [2024-11-28 02:42:29,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:42:29,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337915569] [2024-11-28 02:42:29,086 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:42:29,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:42:29,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:42:29,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:42:29,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:42:29,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337915569] [2024-11-28 02:42:29,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1337915569] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:42:29,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:42:29,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 02:42:29,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706128172] [2024-11-28 02:42:29,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:42:29,131 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:42:29,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:42:29,132 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:42:29,132 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:42:29,142 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 75 [2024-11-28 02:42:29,142 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 75 transitions, 190 flow. Second operand has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 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) [2024-11-28 02:42:29,143 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:42:29,143 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 75 [2024-11-28 02:42:29,143 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 02:42:48,858 INFO L124 PetriNetUnfolderBase]: 217600/294522 cut-off events. [2024-11-28 02:42:48,858 INFO L125 PetriNetUnfolderBase]: For 46094/46094 co-relation queries the response was YES. [2024-11-28 02:42:49,401 INFO L83 FinitePrefix]: Finished finitePrefix Result has 581613 conditions, 294522 events. 217600/294522 cut-off events. For 46094/46094 co-relation queries the response was YES. Maximal size of possible extension queue 9086. Compared 2203633 event pairs, 49768 based on Foata normal form. 38646/320220 useless extension candidates. Maximal degree in co-relation 80810. Up to 114045 conditions per place. [2024-11-28 02:42:50,285 INFO L140 encePairwiseOnDemand]: 65/75 looper letters, 88 selfloop transitions, 3 changer transitions 0/122 dead transitions. [2024-11-28 02:42:50,286 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 122 transitions, 530 flow [2024-11-28 02:42:50,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:42:50,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 02:42:50,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 232 transitions. [2024-11-28 02:42:50,287 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7733333333333333 [2024-11-28 02:42:50,287 INFO L175 Difference]: Start difference. First operand has 71 places, 75 transitions, 190 flow. Second operand 4 states and 232 transitions. [2024-11-28 02:42:50,287 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 122 transitions, 530 flow [2024-11-28 02:42:50,314 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 122 transitions, 494 flow, removed 18 selfloop flow, removed 0 redundant places. [2024-11-28 02:42:50,315 INFO L231 Difference]: Finished difference. Result has 73 places, 68 transitions, 170 flow [2024-11-28 02:42:50,316 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=75, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=170, PETRI_PLACES=73, PETRI_TRANSITIONS=68} [2024-11-28 02:42:50,316 INFO L279 CegarLoopForPetriNet]: 71 programPoint places, 2 predicate places. [2024-11-28 02:42:50,320 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 68 transitions, 170 flow [2024-11-28 02:42:50,320 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.0) internal successors, (132), 4 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) [2024-11-28 02:42:50,320 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 02:42:50,320 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:42:50,320 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-28 02:42:50,320 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2024-11-28 02:42:50,321 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:42:50,321 INFO L85 PathProgramCache]: Analyzing trace with hash -240364019, now seen corresponding path program 1 times [2024-11-28 02:42:50,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:42:50,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484966318] [2024-11-28 02:42:50,321 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:42:50,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:42:50,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:42:50,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:42:50,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:42:50,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484966318] [2024-11-28 02:42:50,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1484966318] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:42:50,594 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:42:50,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 02:42:50,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326713205] [2024-11-28 02:42:50,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:42:50,594 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:42:50,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:42:50,595 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:42:50,595 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:42:50,606 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 75 [2024-11-28 02:42:50,607 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 68 transitions, 170 flow. Second operand has 4 states, 4 states have (on average 32.0) internal successors, (128), 4 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:42:50,607 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 02:42:50,607 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 75 [2024-11-28 02:42:50,607 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand