./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/popl20-commit-2.wvr.c --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_02c8a9b3-6480-4c72-8910-9ab250426053/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c8a9b3-6480-4c72-8910-9ab250426053/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_02c8a9b3-6480-4c72-8910-9ab250426053/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c8a9b3-6480-4c72-8910-9ab250426053/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-commit-2.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c8a9b3-6480-4c72-8910-9ab250426053/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_02c8a9b3-6480-4c72-8910-9ab250426053/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 ec2334e7e9ec2636c6abf161aed91fff94fbff3709d38c7edad92256c3b5dc81 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 03:40:44,340 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 03:40:44,432 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c8a9b3-6480-4c72-8910-9ab250426053/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-28 03:40:44,443 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 03:40:44,443 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 03:40:44,502 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 03:40:44,503 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 03:40:44,504 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 03:40:44,504 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 03:40:44,504 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 03:40:44,504 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 03:40:44,505 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 03:40:44,505 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 03:40:44,505 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 03:40:44,505 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 03:40:44,507 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 03:40:44,507 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 03:40:44,507 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 03:40:44,508 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 03:40:44,508 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 03:40:44,508 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 03:40:44,508 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 03:40:44,508 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 03:40:44,508 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 03:40:44,508 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 03:40:44,508 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 03:40:44,508 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 03:40:44,508 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 03:40:44,509 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 03:40:44,509 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 03:40:44,509 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 03:40:44,509 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 03:40:44,509 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:40:44,509 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 03:40:44,509 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 03:40:44,509 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 03:40:44,509 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 03:40:44,510 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:40:44,510 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 03:40:44,510 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 03:40:44,510 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 03:40:44,510 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 03:40:44,510 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 03:40:44,510 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 03:40:44,510 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 03:40:44,510 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 03:40:44,511 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 03:40:44,512 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 03:40:44,512 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_02c8a9b3-6480-4c72-8910-9ab250426053/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 -> ec2334e7e9ec2636c6abf161aed91fff94fbff3709d38c7edad92256c3b5dc81 [2024-11-28 03:40:44,887 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 03:40:44,898 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 03:40:44,900 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 03:40:44,902 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 03:40:44,903 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 03:40:44,904 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c8a9b3-6480-4c72-8910-9ab250426053/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/weaver/popl20-commit-2.wvr.c [2024-11-28 03:40:48,138 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c8a9b3-6480-4c72-8910-9ab250426053/bin/uautomizer-verify-aQ6SnzHsRB/data/9975f2cb5/4e49074acdab4e2aaae52d34a8120b98/FLAGd20ec387d [2024-11-28 03:40:48,538 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 03:40:48,540 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c8a9b3-6480-4c72-8910-9ab250426053/sv-benchmarks/c/weaver/popl20-commit-2.wvr.c [2024-11-28 03:40:48,557 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c8a9b3-6480-4c72-8910-9ab250426053/bin/uautomizer-verify-aQ6SnzHsRB/data/9975f2cb5/4e49074acdab4e2aaae52d34a8120b98/FLAGd20ec387d [2024-11-28 03:40:48,584 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c8a9b3-6480-4c72-8910-9ab250426053/bin/uautomizer-verify-aQ6SnzHsRB/data/9975f2cb5/4e49074acdab4e2aaae52d34a8120b98 [2024-11-28 03:40:48,587 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 03:40:48,590 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 03:40:48,594 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 03:40:48,594 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 03:40:48,600 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 03:40:48,601 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:40:48" (1/1) ... [2024-11-28 03:40:48,604 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5395310d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:40:48, skipping insertion in model container [2024-11-28 03:40:48,604 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:40:48" (1/1) ... [2024-11-28 03:40:48,634 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 03:40:48,930 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_02c8a9b3-6480-4c72-8910-9ab250426053/sv-benchmarks/c/weaver/popl20-commit-2.wvr.c[5898,5911] [2024-11-28 03:40:48,952 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:40:48,964 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 03:40:49,002 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_02c8a9b3-6480-4c72-8910-9ab250426053/sv-benchmarks/c/weaver/popl20-commit-2.wvr.c[5898,5911] [2024-11-28 03:40:49,006 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:40:49,025 INFO L204 MainTranslator]: Completed translation [2024-11-28 03:40:49,026 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:40:49 WrapperNode [2024-11-28 03:40:49,026 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 03:40:49,028 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 03:40:49,029 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 03:40:49,029 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 03:40:49,037 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:40:49" (1/1) ... [2024-11-28 03:40:49,048 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:40:49" (1/1) ... [2024-11-28 03:40:49,103 INFO L138 Inliner]: procedures = 25, calls = 73, calls flagged for inlining = 27, calls inlined = 33, statements flattened = 453 [2024-11-28 03:40:49,106 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 03:40:49,107 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 03:40:49,108 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 03:40:49,109 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 03:40:49,120 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:40:49" (1/1) ... [2024-11-28 03:40:49,120 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:40:49" (1/1) ... [2024-11-28 03:40:49,130 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:40:49" (1/1) ... [2024-11-28 03:40:49,176 INFO L175 MemorySlicer]: Split 18 memory accesses to 2 slices as follows [2, 16]. 89 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 4 writes are split as follows [0, 4]. [2024-11-28 03:40:49,180 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:40:49" (1/1) ... [2024-11-28 03:40:49,180 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:40:49" (1/1) ... [2024-11-28 03:40:49,209 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:40:49" (1/1) ... [2024-11-28 03:40:49,211 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:40:49" (1/1) ... [2024-11-28 03:40:49,229 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:40:49" (1/1) ... [2024-11-28 03:40:49,231 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:40:49" (1/1) ... [2024-11-28 03:40:49,233 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:40:49" (1/1) ... [2024-11-28 03:40:49,246 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 03:40:49,247 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 03:40:49,247 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 03:40:49,248 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 03:40:49,253 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:40:49" (1/1) ... [2024-11-28 03:40:49,268 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:40:49,291 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c8a9b3-6480-4c72-8910-9ab250426053/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:40:49,308 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c8a9b3-6480-4c72-8910-9ab250426053/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 03:40:49,314 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_02c8a9b3-6480-4c72-8910-9ab250426053/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 03:40:49,350 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 03:40:49,353 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-28 03:40:49,354 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-28 03:40:49,354 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-28 03:40:49,354 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-28 03:40:49,354 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-28 03:40:49,354 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-28 03:40:49,354 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-11-28 03:40:49,354 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-11-28 03:40:49,354 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 03:40:49,355 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-28 03:40:49,355 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-28 03:40:49,355 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-28 03:40:49,355 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-28 03:40:49,355 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-28 03:40:49,355 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-28 03:40:49,355 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 03:40:49,355 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 03:40:49,355 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-28 03:40:49,355 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-28 03:40:49,357 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 03:40:49,532 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 03:40:49,536 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 03:40:50,586 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-28 03:40:50,586 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 03:40:51,433 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 03:40:51,433 INFO L312 CfgBuilder]: Removed 8 assume(true) statements. [2024-11-28 03:40:51,434 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:40:51 BoogieIcfgContainer [2024-11-28 03:40:51,434 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 03:40:51,437 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 03:40:51,437 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 03:40:51,442 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 03:40:51,443 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:40:48" (1/3) ... [2024-11-28 03:40:51,444 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54ee3c39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:40:51, skipping insertion in model container [2024-11-28 03:40:51,444 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:40:49" (2/3) ... [2024-11-28 03:40:51,446 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54ee3c39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:40:51, skipping insertion in model container [2024-11-28 03:40:51,446 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:40:51" (3/3) ... [2024-11-28 03:40:51,448 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-commit-2.wvr.c [2024-11-28 03:40:51,468 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 03:40:51,471 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-commit-2.wvr.c that has 5 procedures, 53 locations, 1 initial locations, 8 loop locations, and 1 error locations. [2024-11-28 03:40:51,471 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-28 03:40:51,591 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-11-28 03:40:51,637 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 65 places, 64 transitions, 156 flow [2024-11-28 03:40:51,720 INFO L124 PetriNetUnfolderBase]: 12/60 cut-off events. [2024-11-28 03:40:51,722 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-28 03:40:51,730 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 60 events. 12/60 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 121 event pairs, 0 based on Foata normal form. 0/47 useless extension candidates. Maximal degree in co-relation 49. Up to 2 conditions per place. [2024-11-28 03:40:51,730 INFO L82 GeneralOperation]: Start removeDead. Operand has 65 places, 64 transitions, 156 flow [2024-11-28 03:40:51,735 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 60 places, 59 transitions, 142 flow [2024-11-28 03:40:51,754 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 03:40:51,776 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;@158a8f9b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 03:40:51,776 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-11-28 03:40:51,840 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-28 03:40:51,840 INFO L124 PetriNetUnfolderBase]: 12/58 cut-off events. [2024-11-28 03:40:51,840 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-28 03:40:51,840 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:40:51,841 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:40:51,842 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-28 03:40:51,850 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:40:51,850 INFO L85 PathProgramCache]: Analyzing trace with hash 804112851, now seen corresponding path program 1 times [2024-11-28 03:40:51,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:40:51,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926401476] [2024-11-28 03:40:51,860 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:40:51,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:40:52,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:40:52,266 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 03:40:52,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:40:52,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926401476] [2024-11-28 03:40:52,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [926401476] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:40:52,268 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:40:52,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 03:40:52,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553500301] [2024-11-28 03:40:52,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:40:52,278 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-28 03:40:52,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:40:52,313 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-28 03:40:52,315 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 03:40:52,317 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 64 [2024-11-28 03:40:52,321 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 59 transitions, 142 flow. Second operand has 2 states, 2 states have (on average 22.0) internal successors, (44), 2 states have internal predecessors, (44), 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 03:40:52,321 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:40:52,321 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 64 [2024-11-28 03:40:52,322 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:40:58,554 INFO L124 PetriNetUnfolderBase]: 30700/39907 cut-off events. [2024-11-28 03:40:58,556 INFO L125 PetriNetUnfolderBase]: For 1603/1603 co-relation queries the response was YES. [2024-11-28 03:40:58,661 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81380 conditions, 39907 events. 30700/39907 cut-off events. For 1603/1603 co-relation queries the response was YES. Maximal size of possible extension queue 1332. Compared 206280 event pairs, 26170 based on Foata normal form. 0/35405 useless extension candidates. Maximal degree in co-relation 77881. Up to 39812 conditions per place. [2024-11-28 03:40:58,845 INFO L140 encePairwiseOnDemand]: 60/64 looper letters, 50 selfloop transitions, 0 changer transitions 0/55 dead transitions. [2024-11-28 03:40:58,846 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 55 transitions, 234 flow [2024-11-28 03:40:58,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-28 03:40:58,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-28 03:40:58,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 72 transitions. [2024-11-28 03:40:58,869 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5625 [2024-11-28 03:40:58,872 INFO L175 Difference]: Start difference. First operand has 60 places, 59 transitions, 142 flow. Second operand 2 states and 72 transitions. [2024-11-28 03:40:58,874 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 55 transitions, 234 flow [2024-11-28 03:40:58,985 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 55 transitions, 218 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-11-28 03:40:58,991 INFO L231 Difference]: Finished difference. Result has 53 places, 55 transitions, 118 flow [2024-11-28 03:40:58,994 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=118, PETRI_PLACES=53, PETRI_TRANSITIONS=55} [2024-11-28 03:40:58,998 INFO L279 CegarLoopForPetriNet]: 60 programPoint places, -7 predicate places. [2024-11-28 03:40:59,003 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 55 transitions, 118 flow [2024-11-28 03:40:59,003 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 22.0) internal successors, (44), 2 states have internal predecessors, (44), 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 03:40:59,003 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:40:59,003 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:40:59,004 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 03:40:59,004 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-28 03:40:59,005 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:40:59,005 INFO L85 PathProgramCache]: Analyzing trace with hash -2094491927, now seen corresponding path program 1 times [2024-11-28 03:40:59,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:40:59,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390816623] [2024-11-28 03:40:59,006 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:40:59,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:40:59,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:40:59,503 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 03:40:59,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:40:59,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390816623] [2024-11-28 03:40:59,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390816623] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:40:59,504 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:40:59,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 03:40:59,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368423387] [2024-11-28 03:40:59,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:40:59,507 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:40:59,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:40:59,508 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:40:59,508 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:40:59,508 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 64 [2024-11-28 03:40:59,509 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 55 transitions, 118 flow. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 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 03:40:59,510 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:40:59,510 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 64 [2024-11-28 03:40:59,510 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:41:03,893 INFO L124 PetriNetUnfolderBase]: 37721/48978 cut-off events. [2024-11-28 03:41:03,894 INFO L125 PetriNetUnfolderBase]: For 492/492 co-relation queries the response was YES. [2024-11-28 03:41:03,969 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98677 conditions, 48978 events. 37721/48978 cut-off events. For 492/492 co-relation queries the response was YES. Maximal size of possible extension queue 1676. Compared 271325 event pairs, 8399 based on Foata normal form. 1/43009 useless extension candidates. Maximal degree in co-relation 98674. Up to 41703 conditions per place. [2024-11-28 03:41:04,139 INFO L140 encePairwiseOnDemand]: 58/64 looper letters, 76 selfloop transitions, 5 changer transitions 1/87 dead transitions. [2024-11-28 03:41:04,139 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 87 transitions, 353 flow [2024-11-28 03:41:04,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:41:04,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 03:41:04,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 110 transitions. [2024-11-28 03:41:04,141 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5729166666666666 [2024-11-28 03:41:04,142 INFO L175 Difference]: Start difference. First operand has 53 places, 55 transitions, 118 flow. Second operand 3 states and 110 transitions. [2024-11-28 03:41:04,142 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 87 transitions, 353 flow [2024-11-28 03:41:04,143 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 87 transitions, 353 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-28 03:41:04,146 INFO L231 Difference]: Finished difference. Result has 56 places, 59 transitions, 151 flow [2024-11-28 03:41:04,146 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=151, PETRI_PLACES=56, PETRI_TRANSITIONS=59} [2024-11-28 03:41:04,148 INFO L279 CegarLoopForPetriNet]: 60 programPoint places, -4 predicate places. [2024-11-28 03:41:04,149 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 59 transitions, 151 flow [2024-11-28 03:41:04,149 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 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 03:41:04,150 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:41:04,150 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:41:04,152 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 03:41:04,152 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-28 03:41:04,153 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:41:04,153 INFO L85 PathProgramCache]: Analyzing trace with hash 1799198968, now seen corresponding path program 1 times [2024-11-28 03:41:04,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:41:04,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002343661] [2024-11-28 03:41:04,154 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:41:04,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:41:04,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:41:04,528 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 03:41:04,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:41:04,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002343661] [2024-11-28 03:41:04,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1002343661] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:41:04,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:41:04,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 03:41:04,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686550304] [2024-11-28 03:41:04,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:41:04,529 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:41:04,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:41:04,530 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:41:04,530 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:41:04,530 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 64 [2024-11-28 03:41:04,530 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 59 transitions, 151 flow. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 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 03:41:04,530 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:41:04,530 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 64 [2024-11-28 03:41:04,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:41:09,714 INFO L124 PetriNetUnfolderBase]: 45950/59985 cut-off events. [2024-11-28 03:41:09,714 INFO L125 PetriNetUnfolderBase]: For 5600/5600 co-relation queries the response was YES. [2024-11-28 03:41:09,789 INFO L83 FinitePrefix]: Finished finitePrefix Result has 128607 conditions, 59985 events. 45950/59985 cut-off events. For 5600/5600 co-relation queries the response was YES. Maximal size of possible extension queue 1608. Compared 331883 event pairs, 17194 based on Foata normal form. 1090/53209 useless extension candidates. Maximal degree in co-relation 128602. Up to 37348 conditions per place. [2024-11-28 03:41:10,008 INFO L140 encePairwiseOnDemand]: 61/64 looper letters, 85 selfloop transitions, 2 changer transitions 0/92 dead transitions. [2024-11-28 03:41:10,008 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 92 transitions, 403 flow [2024-11-28 03:41:10,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:41:10,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 03:41:10,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 112 transitions. [2024-11-28 03:41:10,010 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2024-11-28 03:41:10,010 INFO L175 Difference]: Start difference. First operand has 56 places, 59 transitions, 151 flow. Second operand 3 states and 112 transitions. [2024-11-28 03:41:10,010 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 92 transitions, 403 flow [2024-11-28 03:41:10,014 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 92 transitions, 399 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 03:41:10,016 INFO L231 Difference]: Finished difference. Result has 58 places, 59 transitions, 154 flow [2024-11-28 03:41:10,016 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=154, PETRI_PLACES=58, PETRI_TRANSITIONS=59} [2024-11-28 03:41:10,017 INFO L279 CegarLoopForPetriNet]: 60 programPoint places, -2 predicate places. [2024-11-28 03:41:10,018 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 59 transitions, 154 flow [2024-11-28 03:41:10,019 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 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 03:41:10,019 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:41:10,019 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:41:10,019 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 03:41:10,020 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-28 03:41:10,020 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:41:10,021 INFO L85 PathProgramCache]: Analyzing trace with hash -421989388, now seen corresponding path program 1 times [2024-11-28 03:41:10,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:41:10,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603157290] [2024-11-28 03:41:10,021 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:41:10,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:41:10,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:41:10,315 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 03:41:10,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:41:10,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603157290] [2024-11-28 03:41:10,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603157290] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:41:10,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:41:10,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 03:41:10,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599762873] [2024-11-28 03:41:10,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:41:10,318 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:41:10,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:41:10,319 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:41:10,320 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:41:10,321 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 64 [2024-11-28 03:41:10,321 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 59 transitions, 154 flow. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 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 03:41:10,322 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:41:10,323 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 64 [2024-11-28 03:41:10,323 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:41:14,551 INFO L124 PetriNetUnfolderBase]: 42329/55471 cut-off events. [2024-11-28 03:41:14,552 INFO L125 PetriNetUnfolderBase]: For 7400/7400 co-relation queries the response was YES. [2024-11-28 03:41:14,620 INFO L83 FinitePrefix]: Finished finitePrefix Result has 120168 conditions, 55471 events. 42329/55471 cut-off events. For 7400/7400 co-relation queries the response was YES. Maximal size of possible extension queue 1399. Compared 303906 event pairs, 14810 based on Foata normal form. 914/49030 useless extension candidates. Maximal degree in co-relation 120162. Up to 37352 conditions per place. [2024-11-28 03:41:14,903 INFO L140 encePairwiseOnDemand]: 61/64 looper letters, 85 selfloop transitions, 2 changer transitions 0/92 dead transitions. [2024-11-28 03:41:14,903 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 92 transitions, 409 flow [2024-11-28 03:41:14,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:41:14,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 03:41:14,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 113 transitions. [2024-11-28 03:41:14,905 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5885416666666666 [2024-11-28 03:41:14,905 INFO L175 Difference]: Start difference. First operand has 58 places, 59 transitions, 154 flow. Second operand 3 states and 113 transitions. [2024-11-28 03:41:14,905 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 92 transitions, 409 flow [2024-11-28 03:41:14,911 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 92 transitions, 407 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 03:41:14,912 INFO L231 Difference]: Finished difference. Result has 60 places, 59 transitions, 160 flow [2024-11-28 03:41:14,913 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=160, PETRI_PLACES=60, PETRI_TRANSITIONS=59} [2024-11-28 03:41:14,913 INFO L279 CegarLoopForPetriNet]: 60 programPoint places, 0 predicate places. [2024-11-28 03:41:14,914 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 59 transitions, 160 flow [2024-11-28 03:41:14,914 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 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 03:41:14,914 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:41:14,914 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:41:14,914 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-28 03:41:14,915 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-28 03:41:14,915 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:41:14,915 INFO L85 PathProgramCache]: Analyzing trace with hash 1671008838, now seen corresponding path program 1 times [2024-11-28 03:41:14,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:41:14,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624609008] [2024-11-28 03:41:14,916 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:41:14,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:41:14,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:41:15,096 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:41:15,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:41:15,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624609008] [2024-11-28 03:41:15,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1624609008] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:41:15,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:41:15,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 03:41:15,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119453963] [2024-11-28 03:41:15,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:41:15,097 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:41:15,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:41:15,098 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:41:15,098 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:41:15,098 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 64 [2024-11-28 03:41:15,098 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 59 transitions, 160 flow. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 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 03:41:15,098 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:41:15,098 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 64 [2024-11-28 03:41:15,099 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:41:20,014 INFO L124 PetriNetUnfolderBase]: 43382/56841 cut-off events. [2024-11-28 03:41:20,014 INFO L125 PetriNetUnfolderBase]: For 10116/10116 co-relation queries the response was YES. [2024-11-28 03:41:20,088 INFO L83 FinitePrefix]: Finished finitePrefix Result has 125817 conditions, 56841 events. 43382/56841 cut-off events. For 10116/10116 co-relation queries the response was YES. Maximal size of possible extension queue 1282. Compared 305801 event pairs, 14565 based on Foata normal form. 695/50560 useless extension candidates. Maximal degree in co-relation 125810. Up to 37488 conditions per place. [2024-11-28 03:41:20,192 INFO L140 encePairwiseOnDemand]: 61/64 looper letters, 80 selfloop transitions, 2 changer transitions 6/93 dead transitions. [2024-11-28 03:41:20,192 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 93 transitions, 417 flow [2024-11-28 03:41:20,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:41:20,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 03:41:20,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 116 transitions. [2024-11-28 03:41:20,194 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6041666666666666 [2024-11-28 03:41:20,194 INFO L175 Difference]: Start difference. First operand has 60 places, 59 transitions, 160 flow. Second operand 3 states and 116 transitions. [2024-11-28 03:41:20,194 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 93 transitions, 417 flow [2024-11-28 03:41:20,197 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 93 transitions, 415 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 03:41:20,198 INFO L231 Difference]: Finished difference. Result has 62 places, 59 transitions, 166 flow [2024-11-28 03:41:20,198 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=166, PETRI_PLACES=62, PETRI_TRANSITIONS=59} [2024-11-28 03:41:20,199 INFO L279 CegarLoopForPetriNet]: 60 programPoint places, 2 predicate places. [2024-11-28 03:41:20,199 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 59 transitions, 166 flow [2024-11-28 03:41:20,199 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 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 03:41:20,200 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:41:20,200 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:41:20,200 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-28 03:41:20,200 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-28 03:41:20,201 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:41:20,201 INFO L85 PathProgramCache]: Analyzing trace with hash 979193112, now seen corresponding path program 1 times [2024-11-28 03:41:20,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:41:20,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082762695] [2024-11-28 03:41:20,201 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:41:20,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:41:20,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:41:20,366 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 03:41:20,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:41:20,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082762695] [2024-11-28 03:41:20,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1082762695] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:41:20,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:41:20,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 03:41:20,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843827261] [2024-11-28 03:41:20,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:41:20,368 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:41:20,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:41:20,368 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:41:20,368 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:41:20,369 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 64 [2024-11-28 03:41:20,369 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 59 transitions, 166 flow. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 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 03:41:20,369 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:41:20,369 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 64 [2024-11-28 03:41:20,369 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:41:23,563 INFO L124 PetriNetUnfolderBase]: 27815/36517 cut-off events. [2024-11-28 03:41:23,564 INFO L125 PetriNetUnfolderBase]: For 9072/9072 co-relation queries the response was YES. [2024-11-28 03:41:23,631 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81661 conditions, 36517 events. 27815/36517 cut-off events. For 9072/9072 co-relation queries the response was YES. Maximal size of possible extension queue 958. Compared 182484 event pairs, 12783 based on Foata normal form. 312/31864 useless extension candidates. Maximal degree in co-relation 81653. Up to 30323 conditions per place. [2024-11-28 03:41:23,923 INFO L140 encePairwiseOnDemand]: 61/64 looper letters, 66 selfloop transitions, 2 changer transitions 8/81 dead transitions. [2024-11-28 03:41:23,923 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 81 transitions, 366 flow [2024-11-28 03:41:23,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:41:23,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 03:41:23,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 100 transitions. [2024-11-28 03:41:23,924 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5208333333333334 [2024-11-28 03:41:23,924 INFO L175 Difference]: Start difference. First operand has 62 places, 59 transitions, 166 flow. Second operand 3 states and 100 transitions. [2024-11-28 03:41:23,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 81 transitions, 366 flow [2024-11-28 03:41:23,926 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 81 transitions, 364 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 03:41:23,927 INFO L231 Difference]: Finished difference. Result has 64 places, 60 transitions, 176 flow [2024-11-28 03:41:23,927 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=176, PETRI_PLACES=64, PETRI_TRANSITIONS=60} [2024-11-28 03:41:23,928 INFO L279 CegarLoopForPetriNet]: 60 programPoint places, 4 predicate places. [2024-11-28 03:41:23,928 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 60 transitions, 176 flow [2024-11-28 03:41:23,928 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 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 03:41:23,929 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:41:23,929 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:41:23,929 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-28 03:41:23,929 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-28 03:41:23,930 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:41:23,930 INFO L85 PathProgramCache]: Analyzing trace with hash 1352860063, now seen corresponding path program 1 times [2024-11-28 03:41:23,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:41:23,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633813829] [2024-11-28 03:41:23,930 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:41:23,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:41:24,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:41:24,337 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 03:41:24,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:41:24,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633813829] [2024-11-28 03:41:24,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633813829] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:41:24,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:41:24,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 03:41:24,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756545978] [2024-11-28 03:41:24,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:41:24,340 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:41:24,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:41:24,341 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:41:24,342 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:41:24,343 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 64 [2024-11-28 03:41:24,343 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 60 transitions, 176 flow. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 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 03:41:24,343 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:41:24,343 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 64 [2024-11-28 03:41:24,343 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:41:28,318 INFO L124 PetriNetUnfolderBase]: 32229/42718 cut-off events. [2024-11-28 03:41:28,318 INFO L125 PetriNetUnfolderBase]: For 8885/8885 co-relation queries the response was YES. [2024-11-28 03:41:28,399 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95709 conditions, 42718 events. 32229/42718 cut-off events. For 8885/8885 co-relation queries the response was YES. Maximal size of possible extension queue 951. Compared 223820 event pairs, 28730 based on Foata normal form. 281/36769 useless extension candidates. Maximal degree in co-relation 95700. Up to 36456 conditions per place. [2024-11-28 03:41:28,466 INFO L140 encePairwiseOnDemand]: 54/64 looper letters, 54 selfloop transitions, 2 changer transitions 41/102 dead transitions. [2024-11-28 03:41:28,466 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 102 transitions, 462 flow [2024-11-28 03:41:28,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 03:41:28,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-28 03:41:28,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 138 transitions. [2024-11-28 03:41:28,467 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.43125 [2024-11-28 03:41:28,468 INFO L175 Difference]: Start difference. First operand has 64 places, 60 transitions, 176 flow. Second operand 5 states and 138 transitions. [2024-11-28 03:41:28,468 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 102 transitions, 462 flow [2024-11-28 03:41:28,469 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 102 transitions, 460 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 03:41:28,471 INFO L231 Difference]: Finished difference. Result has 70 places, 61 transitions, 200 flow [2024-11-28 03:41:28,471 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=200, PETRI_PLACES=70, PETRI_TRANSITIONS=61} [2024-11-28 03:41:28,472 INFO L279 CegarLoopForPetriNet]: 60 programPoint places, 10 predicate places. [2024-11-28 03:41:28,472 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 61 transitions, 200 flow [2024-11-28 03:41:28,472 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 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 03:41:28,472 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:41:28,472 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:41:28,473 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-28 03:41:28,473 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-28 03:41:28,473 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:41:28,473 INFO L85 PathProgramCache]: Analyzing trace with hash 201546775, now seen corresponding path program 1 times [2024-11-28 03:41:28,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:41:28,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192273210] [2024-11-28 03:41:28,474 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:41:28,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:41:28,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:41:28,832 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 03:41:28,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:41:28,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192273210] [2024-11-28 03:41:28,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [192273210] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:41:28,834 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:41:28,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 03:41:28,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153408554] [2024-11-28 03:41:28,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:41:28,834 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:41:28,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:41:28,835 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:41:28,835 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:41:28,836 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 64 [2024-11-28 03:41:28,836 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 61 transitions, 200 flow. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 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 03:41:28,836 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:41:28,836 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 64 [2024-11-28 03:41:28,836 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:41:32,666 INFO L124 PetriNetUnfolderBase]: 33978/45159 cut-off events. [2024-11-28 03:41:32,667 INFO L125 PetriNetUnfolderBase]: For 9870/9870 co-relation queries the response was YES. [2024-11-28 03:41:32,772 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101581 conditions, 45159 events. 33978/45159 cut-off events. For 9870/9870 co-relation queries the response was YES. Maximal size of possible extension queue 952. Compared 238299 event pairs, 30389 based on Foata normal form. 98/38746 useless extension candidates. Maximal degree in co-relation 101569. Up to 36454 conditions per place. [2024-11-28 03:41:32,866 INFO L140 encePairwiseOnDemand]: 59/64 looper letters, 54 selfloop transitions, 3 changer transitions 43/105 dead transitions. [2024-11-28 03:41:32,867 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 105 transitions, 528 flow [2024-11-28 03:41:32,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:41:32,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 03:41:32,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 131 transitions. [2024-11-28 03:41:32,869 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.51171875 [2024-11-28 03:41:32,869 INFO L175 Difference]: Start difference. First operand has 70 places, 61 transitions, 200 flow. Second operand 4 states and 131 transitions. [2024-11-28 03:41:32,869 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 105 transitions, 528 flow [2024-11-28 03:41:32,906 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 105 transitions, 496 flow, removed 15 selfloop flow, removed 3 redundant places. [2024-11-28 03:41:32,908 INFO L231 Difference]: Finished difference. Result has 70 places, 62 transitions, 200 flow [2024-11-28 03:41:32,908 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=200, PETRI_PLACES=70, PETRI_TRANSITIONS=62} [2024-11-28 03:41:32,909 INFO L279 CegarLoopForPetriNet]: 60 programPoint places, 10 predicate places. [2024-11-28 03:41:32,909 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 62 transitions, 200 flow [2024-11-28 03:41:32,909 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 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 03:41:32,909 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:41:32,910 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:41:32,910 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-28 03:41:32,910 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-28 03:41:32,911 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:41:32,911 INFO L85 PathProgramCache]: Analyzing trace with hash 1818801350, now seen corresponding path program 1 times [2024-11-28 03:41:32,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:41:32,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925979864] [2024-11-28 03:41:32,911 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:41:32,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:41:32,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:41:33,250 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 03:41:33,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:41:33,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925979864] [2024-11-28 03:41:33,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1925979864] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:41:33,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:41:33,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 03:41:33,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657236774] [2024-11-28 03:41:33,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:41:33,255 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:41:33,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:41:33,256 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:41:33,256 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:41:33,256 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 64 [2024-11-28 03:41:33,256 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 62 transitions, 200 flow. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 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 03:41:33,256 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:41:33,256 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 64 [2024-11-28 03:41:33,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand