./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/test-easy6.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_f99f2e75-cce7-431c-8b2f-b9f14bfb9110/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f99f2e75-cce7-431c-8b2f-b9f14bfb9110/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_f99f2e75-cce7-431c-8b2f-b9f14bfb9110/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f99f2e75-cce7-431c-8b2f-b9f14bfb9110/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/test-easy6.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f99f2e75-cce7-431c-8b2f-b9f14bfb9110/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_f99f2e75-cce7-431c-8b2f-b9f14bfb9110/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 ce46a456eb9ebd463906f73dade5d1c1c222b26a063863b37340a2842c9ee284 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 04:02:29,308 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 04:02:29,392 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f99f2e75-cce7-431c-8b2f-b9f14bfb9110/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-28 04:02:29,402 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 04:02:29,403 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 04:02:29,446 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 04:02:29,446 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 04:02:29,447 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 04:02:29,447 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 04:02:29,447 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 04:02:29,447 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 04:02:29,447 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 04:02:29,448 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 04:02:29,448 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 04:02:29,450 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 04:02:29,450 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 04:02:29,451 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 04:02:29,451 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 04:02:29,451 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 04:02:29,451 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 04:02:29,451 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 04:02:29,452 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 04:02:29,452 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 04:02:29,452 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 04:02:29,452 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 04:02:29,452 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 04:02:29,452 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 04:02:29,452 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 04:02:29,452 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 04:02:29,452 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:02:29,453 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:02:29,453 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:02:29,453 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:02:29,453 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 04:02:29,453 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:02:29,453 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:02:29,453 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:02:29,453 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:02:29,454 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 04:02:29,454 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 04:02:29,454 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 04:02:29,454 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 04:02:29,454 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 04:02:29,454 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 04:02:29,454 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 04:02:29,455 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 04:02:29,455 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 04:02:29,455 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 04:02:29,455 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_f99f2e75-cce7-431c-8b2f-b9f14bfb9110/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 -> ce46a456eb9ebd463906f73dade5d1c1c222b26a063863b37340a2842c9ee284 [2024-11-28 04:02:29,730 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 04:02:29,743 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 04:02:29,746 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 04:02:29,748 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 04:02:29,748 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 04:02:29,749 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f99f2e75-cce7-431c-8b2f-b9f14bfb9110/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/weaver/test-easy6.wvr.c [2024-11-28 04:02:32,685 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f99f2e75-cce7-431c-8b2f-b9f14bfb9110/bin/uautomizer-verify-aQ6SnzHsRB/data/29cb59217/545cb4b1a8e34fd0bc5cba2e526acb52/FLAGbd54fb6dc [2024-11-28 04:02:33,040 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 04:02:33,041 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f99f2e75-cce7-431c-8b2f-b9f14bfb9110/sv-benchmarks/c/weaver/test-easy6.wvr.c [2024-11-28 04:02:33,076 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f99f2e75-cce7-431c-8b2f-b9f14bfb9110/bin/uautomizer-verify-aQ6SnzHsRB/data/29cb59217/545cb4b1a8e34fd0bc5cba2e526acb52/FLAGbd54fb6dc [2024-11-28 04:02:33,270 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f99f2e75-cce7-431c-8b2f-b9f14bfb9110/bin/uautomizer-verify-aQ6SnzHsRB/data/29cb59217/545cb4b1a8e34fd0bc5cba2e526acb52 [2024-11-28 04:02:33,272 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 04:02:33,274 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 04:02:33,275 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 04:02:33,277 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 04:02:33,280 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 04:02:33,281 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:02:33" (1/1) ... [2024-11-28 04:02:33,281 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14c19a4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:02:33, skipping insertion in model container [2024-11-28 04:02:33,281 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:02:33" (1/1) ... [2024-11-28 04:02:33,298 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 04:02:33,460 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_f99f2e75-cce7-431c-8b2f-b9f14bfb9110/sv-benchmarks/c/weaver/test-easy6.wvr.c[2032,2045] [2024-11-28 04:02:33,463 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:02:33,473 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 04:02:33,489 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_f99f2e75-cce7-431c-8b2f-b9f14bfb9110/sv-benchmarks/c/weaver/test-easy6.wvr.c[2032,2045] [2024-11-28 04:02:33,490 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:02:33,503 INFO L204 MainTranslator]: Completed translation [2024-11-28 04:02:33,503 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:02:33 WrapperNode [2024-11-28 04:02:33,503 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 04:02:33,504 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 04:02:33,504 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 04:02:33,504 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 04:02:33,510 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:02:33" (1/1) ... [2024-11-28 04:02:33,515 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:02:33" (1/1) ... [2024-11-28 04:02:33,530 INFO L138 Inliner]: procedures = 18, calls = 13, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 92 [2024-11-28 04:02:33,531 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 04:02:33,531 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 04:02:33,531 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 04:02:33,531 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 04:02:33,538 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:02:33" (1/1) ... [2024-11-28 04:02:33,538 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:02:33" (1/1) ... [2024-11-28 04:02:33,540 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:02:33" (1/1) ... [2024-11-28 04:02:33,551 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 04:02:33,551 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:02:33" (1/1) ... [2024-11-28 04:02:33,551 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:02:33" (1/1) ... [2024-11-28 04:02:33,555 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:02:33" (1/1) ... [2024-11-28 04:02:33,560 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:02:33" (1/1) ... [2024-11-28 04:02:33,562 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:02:33" (1/1) ... [2024-11-28 04:02:33,564 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:02:33" (1/1) ... [2024-11-28 04:02:33,568 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:02:33" (1/1) ... [2024-11-28 04:02:33,570 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 04:02:33,571 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 04:02:33,571 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 04:02:33,571 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 04:02:33,572 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:02:33" (1/1) ... [2024-11-28 04:02:33,580 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:02:33,592 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f99f2e75-cce7-431c-8b2f-b9f14bfb9110/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:02:33,603 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f99f2e75-cce7-431c-8b2f-b9f14bfb9110/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 04:02:33,609 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f99f2e75-cce7-431c-8b2f-b9f14bfb9110/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 04:02:33,632 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 04:02:33,632 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-28 04:02:33,632 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-28 04:02:33,632 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-28 04:02:33,633 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-28 04:02:33,633 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 04:02:33,633 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 04:02:33,633 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 04:02:33,635 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 04:02:33,728 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 04:02:33,730 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 04:02:33,914 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-28 04:02:33,914 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 04:02:34,073 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 04:02:34,073 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-28 04:02:34,073 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:02:34 BoogieIcfgContainer [2024-11-28 04:02:34,073 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 04:02:34,076 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 04:02:34,076 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 04:02:34,082 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 04:02:34,082 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 04:02:33" (1/3) ... [2024-11-28 04:02:34,083 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67c9019a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:02:34, skipping insertion in model container [2024-11-28 04:02:34,084 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:02:33" (2/3) ... [2024-11-28 04:02:34,085 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67c9019a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:02:34, skipping insertion in model container [2024-11-28 04:02:34,085 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:02:34" (3/3) ... [2024-11-28 04:02:34,087 INFO L128 eAbstractionObserver]: Analyzing ICFG test-easy6.wvr.c [2024-11-28 04:02:34,105 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 04:02:34,107 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG test-easy6.wvr.c that has 3 procedures, 33 locations, 1 initial locations, 0 loop locations, and 1 error locations. [2024-11-28 04:02:34,107 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-28 04:02:34,174 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-28 04:02:34,218 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 39 places, 32 transitions, 78 flow [2024-11-28 04:02:34,252 INFO L124 PetriNetUnfolderBase]: 0/30 cut-off events. [2024-11-28 04:02:34,255 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-28 04:02:34,258 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39 conditions, 30 events. 0/30 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 26 event pairs, 0 based on Foata normal form. 0/29 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2024-11-28 04:02:34,258 INFO L82 GeneralOperation]: Start removeDead. Operand has 39 places, 32 transitions, 78 flow [2024-11-28 04:02:34,262 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 36 places, 29 transitions, 70 flow [2024-11-28 04:02:34,279 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 04:02:34,300 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;@5f443d77, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 04:02:34,301 INFO L334 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-11-28 04:02:34,318 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-28 04:02:34,318 INFO L124 PetriNetUnfolderBase]: 0/28 cut-off events. [2024-11-28 04:02:34,318 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-28 04:02:34,318 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:02:34,319 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] [2024-11-28 04:02:34,319 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 04:02:34,326 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:02:34,326 INFO L85 PathProgramCache]: Analyzing trace with hash -1238947515, now seen corresponding path program 1 times [2024-11-28 04:02:34,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:02:34,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100571474] [2024-11-28 04:02:34,337 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:02:34,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:02:34,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:02:35,039 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 04:02:35,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:02:35,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100571474] [2024-11-28 04:02:35,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2100571474] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:02:35,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:02:35,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 04:02:35,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328581416] [2024-11-28 04:02:35,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:02:35,050 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 04:02:35,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:02:35,081 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 04:02:35,082 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:02:35,120 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 32 [2024-11-28 04:02:35,124 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 29 transitions, 70 flow. Second operand has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 7 states have internal predecessors, (121), 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 04:02:35,124 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:02:35,124 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 32 [2024-11-28 04:02:35,125 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:02:35,468 INFO L124 PetriNetUnfolderBase]: 92/254 cut-off events. [2024-11-28 04:02:35,469 INFO L125 PetriNetUnfolderBase]: For 29/29 co-relation queries the response was YES. [2024-11-28 04:02:35,474 INFO L83 FinitePrefix]: Finished finitePrefix Result has 490 conditions, 254 events. 92/254 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1172 event pairs, 20 based on Foata normal form. 1/246 useless extension candidates. Maximal degree in co-relation 405. Up to 55 conditions per place. [2024-11-28 04:02:35,476 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 28 selfloop transitions, 6 changer transitions 13/60 dead transitions. [2024-11-28 04:02:35,477 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 60 transitions, 250 flow [2024-11-28 04:02:35,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 04:02:35,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-28 04:02:35,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 153 transitions. [2024-11-28 04:02:35,490 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6830357142857143 [2024-11-28 04:02:35,492 INFO L175 Difference]: Start difference. First operand has 36 places, 29 transitions, 70 flow. Second operand 7 states and 153 transitions. [2024-11-28 04:02:35,493 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 60 transitions, 250 flow [2024-11-28 04:02:35,498 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 60 transitions, 226 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-28 04:02:35,501 INFO L231 Difference]: Finished difference. Result has 41 places, 33 transitions, 97 flow [2024-11-28 04:02:35,504 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=97, PETRI_PLACES=41, PETRI_TRANSITIONS=33} [2024-11-28 04:02:35,508 INFO L279 CegarLoopForPetriNet]: 36 programPoint places, 5 predicate places. [2024-11-28 04:02:35,508 INFO L471 AbstractCegarLoop]: Abstraction has has 41 places, 33 transitions, 97 flow [2024-11-28 04:02:35,509 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 7 states have internal predecessors, (121), 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 04:02:35,509 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:02:35,509 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] [2024-11-28 04:02:35,509 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 04:02:35,509 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 04:02:35,510 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:02:35,510 INFO L85 PathProgramCache]: Analyzing trace with hash 293975081, now seen corresponding path program 2 times [2024-11-28 04:02:35,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:02:35,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72796915] [2024-11-28 04:02:35,511 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:02:35,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:02:35,530 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-28 04:02:35,530 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:02:35,749 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 04:02:35,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:02:35,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72796915] [2024-11-28 04:02:35,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72796915] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:02:35,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:02:35,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 04:02:35,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255644110] [2024-11-28 04:02:35,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:02:35,750 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 04:02:35,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:02:35,751 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 04:02:35,751 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:02:35,784 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 32 [2024-11-28 04:02:35,784 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 33 transitions, 97 flow. Second operand has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 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 04:02:35,785 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:02:35,785 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 32 [2024-11-28 04:02:35,785 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:02:36,108 INFO L124 PetriNetUnfolderBase]: 229/581 cut-off events. [2024-11-28 04:02:36,109 INFO L125 PetriNetUnfolderBase]: For 45/45 co-relation queries the response was YES. [2024-11-28 04:02:36,111 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1155 conditions, 581 events. 229/581 cut-off events. For 45/45 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 3166 event pairs, 51 based on Foata normal form. 4/573 useless extension candidates. Maximal degree in co-relation 1125. Up to 143 conditions per place. [2024-11-28 04:02:36,114 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 37 selfloop transitions, 11 changer transitions 10/73 dead transitions. [2024-11-28 04:02:36,114 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 73 transitions, 300 flow [2024-11-28 04:02:36,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 04:02:36,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-28 04:02:36,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 176 transitions. [2024-11-28 04:02:36,116 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6111111111111112 [2024-11-28 04:02:36,116 INFO L175 Difference]: Start difference. First operand has 41 places, 33 transitions, 97 flow. Second operand 9 states and 176 transitions. [2024-11-28 04:02:36,116 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 73 transitions, 300 flow [2024-11-28 04:02:36,119 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 73 transitions, 296 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-11-28 04:02:36,121 INFO L231 Difference]: Finished difference. Result has 52 places, 41 transitions, 169 flow [2024-11-28 04:02:36,121 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=95, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=169, PETRI_PLACES=52, PETRI_TRANSITIONS=41} [2024-11-28 04:02:36,122 INFO L279 CegarLoopForPetriNet]: 36 programPoint places, 16 predicate places. [2024-11-28 04:02:36,122 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 41 transitions, 169 flow [2024-11-28 04:02:36,122 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 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 04:02:36,122 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:02:36,122 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] [2024-11-28 04:02:36,123 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 04:02:36,124 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 04:02:36,127 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:02:36,127 INFO L85 PathProgramCache]: Analyzing trace with hash -329664591, now seen corresponding path program 3 times [2024-11-28 04:02:36,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:02:36,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490901147] [2024-11-28 04:02:36,128 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 04:02:36,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:02:36,166 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-28 04:02:36,167 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:02:36,262 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 04:02:36,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:02:36,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490901147] [2024-11-28 04:02:36,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1490901147] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:02:36,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:02:36,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:02:36,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570195108] [2024-11-28 04:02:36,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:02:36,263 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:02:36,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:02:36,264 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:02:36,264 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:02:36,269 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 32 [2024-11-28 04:02:36,270 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 41 transitions, 169 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 04:02:36,270 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:02:36,270 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 32 [2024-11-28 04:02:36,270 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:02:36,381 INFO L124 PetriNetUnfolderBase]: 111/400 cut-off events. [2024-11-28 04:02:36,381 INFO L125 PetriNetUnfolderBase]: For 187/191 co-relation queries the response was YES. [2024-11-28 04:02:36,383 INFO L83 FinitePrefix]: Finished finitePrefix Result has 931 conditions, 400 events. 111/400 cut-off events. For 187/191 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 2354 event pairs, 88 based on Foata normal form. 9/381 useless extension candidates. Maximal degree in co-relation 757. Up to 215 conditions per place. [2024-11-28 04:02:36,385 INFO L140 encePairwiseOnDemand]: 29/32 looper letters, 16 selfloop transitions, 2 changer transitions 0/45 dead transitions. [2024-11-28 04:02:36,386 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 45 transitions, 214 flow [2024-11-28 04:02:36,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:02:36,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 04:02:36,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 70 transitions. [2024-11-28 04:02:36,387 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7291666666666666 [2024-11-28 04:02:36,387 INFO L175 Difference]: Start difference. First operand has 52 places, 41 transitions, 169 flow. Second operand 3 states and 70 transitions. [2024-11-28 04:02:36,387 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 45 transitions, 214 flow [2024-11-28 04:02:36,391 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 45 transitions, 212 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-28 04:02:36,393 INFO L231 Difference]: Finished difference. Result has 52 places, 41 transitions, 175 flow [2024-11-28 04:02:36,393 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=167, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=175, PETRI_PLACES=52, PETRI_TRANSITIONS=41} [2024-11-28 04:02:36,394 INFO L279 CegarLoopForPetriNet]: 36 programPoint places, 16 predicate places. [2024-11-28 04:02:36,394 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 41 transitions, 175 flow [2024-11-28 04:02:36,394 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 04:02:36,394 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:02:36,394 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] [2024-11-28 04:02:36,395 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 04:02:36,395 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 04:02:36,396 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:02:36,396 INFO L85 PathProgramCache]: Analyzing trace with hash 1727786543, now seen corresponding path program 4 times [2024-11-28 04:02:36,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:02:36,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241141035] [2024-11-28 04:02:36,396 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 04:02:36,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:02:36,421 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 04:02:36,421 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:02:36,628 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 04:02:36,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:02:36,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241141035] [2024-11-28 04:02:36,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [241141035] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:02:36,629 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:02:36,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 04:02:36,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169884602] [2024-11-28 04:02:36,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:02:36,629 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 04:02:36,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:02:36,630 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 04:02:36,630 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:02:36,647 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 32 [2024-11-28 04:02:36,648 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 41 transitions, 175 flow. Second operand has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 7 states have internal predecessors, (121), 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 04:02:36,648 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:02:36,648 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 32 [2024-11-28 04:02:36,648 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:02:36,892 INFO L124 PetriNetUnfolderBase]: 183/480 cut-off events. [2024-11-28 04:02:36,892 INFO L125 PetriNetUnfolderBase]: For 282/286 co-relation queries the response was YES. [2024-11-28 04:02:36,894 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1240 conditions, 480 events. 183/480 cut-off events. For 282/286 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2610 event pairs, 51 based on Foata normal form. 6/467 useless extension candidates. Maximal degree in co-relation 637. Up to 114 conditions per place. [2024-11-28 04:02:36,898 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 20 selfloop transitions, 5 changer transitions 13/59 dead transitions. [2024-11-28 04:02:36,898 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 59 transitions, 296 flow [2024-11-28 04:02:36,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 04:02:36,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-28 04:02:36,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 144 transitions. [2024-11-28 04:02:36,900 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6428571428571429 [2024-11-28 04:02:36,901 INFO L175 Difference]: Start difference. First operand has 52 places, 41 transitions, 175 flow. Second operand 7 states and 144 transitions. [2024-11-28 04:02:36,901 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 59 transitions, 296 flow [2024-11-28 04:02:36,907 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 59 transitions, 292 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-28 04:02:36,908 INFO L231 Difference]: Finished difference. Result has 57 places, 39 transitions, 174 flow [2024-11-28 04:02:36,911 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=171, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=174, PETRI_PLACES=57, PETRI_TRANSITIONS=39} [2024-11-28 04:02:36,912 INFO L279 CegarLoopForPetriNet]: 36 programPoint places, 21 predicate places. [2024-11-28 04:02:36,912 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 39 transitions, 174 flow [2024-11-28 04:02:36,912 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.285714285714285) internal successors, (121), 7 states have internal predecessors, (121), 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 04:02:36,913 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:02:36,913 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] [2024-11-28 04:02:36,913 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-28 04:02:36,913 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 04:02:36,914 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:02:36,914 INFO L85 PathProgramCache]: Analyzing trace with hash 2134267619, now seen corresponding path program 5 times [2024-11-28 04:02:36,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:02:36,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007296631] [2024-11-28 04:02:36,914 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 04:02:36,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:02:36,932 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-28 04:02:36,932 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:02:37,164 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 04:02:37,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:02:37,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007296631] [2024-11-28 04:02:37,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1007296631] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:02:37,164 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:02:37,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 04:02:37,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487237519] [2024-11-28 04:02:37,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:02:37,165 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 04:02:37,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:02:37,166 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 04:02:37,166 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:02:37,183 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 32 [2024-11-28 04:02:37,184 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 39 transitions, 174 flow. Second operand has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 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 04:02:37,184 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:02:37,184 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 32 [2024-11-28 04:02:37,184 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:02:37,481 INFO L124 PetriNetUnfolderBase]: 194/514 cut-off events. [2024-11-28 04:02:37,481 INFO L125 PetriNetUnfolderBase]: For 490/511 co-relation queries the response was YES. [2024-11-28 04:02:37,483 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1362 conditions, 514 events. 194/514 cut-off events. For 490/511 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 2706 event pairs, 62 based on Foata normal form. 25/525 useless extension candidates. Maximal degree in co-relation 1324. Up to 146 conditions per place. [2024-11-28 04:02:37,485 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 37 selfloop transitions, 8 changer transitions 10/68 dead transitions. [2024-11-28 04:02:37,485 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 68 transitions, 370 flow [2024-11-28 04:02:37,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 04:02:37,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-28 04:02:37,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 160 transitions. [2024-11-28 04:02:37,487 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.625 [2024-11-28 04:02:37,487 INFO L175 Difference]: Start difference. First operand has 57 places, 39 transitions, 174 flow. Second operand 8 states and 160 transitions. [2024-11-28 04:02:37,487 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 68 transitions, 370 flow [2024-11-28 04:02:37,490 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 68 transitions, 353 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-11-28 04:02:37,492 INFO L231 Difference]: Finished difference. Result has 57 places, 37 transitions, 167 flow [2024-11-28 04:02:37,492 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=161, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=167, PETRI_PLACES=57, PETRI_TRANSITIONS=37} [2024-11-28 04:02:37,493 INFO L279 CegarLoopForPetriNet]: 36 programPoint places, 21 predicate places. [2024-11-28 04:02:37,493 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 37 transitions, 167 flow [2024-11-28 04:02:37,493 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 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 04:02:37,494 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:02:37,494 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] [2024-11-28 04:02:37,494 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-28 04:02:37,494 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 04:02:37,495 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:02:37,495 INFO L85 PathProgramCache]: Analyzing trace with hash -777597203, now seen corresponding path program 6 times [2024-11-28 04:02:37,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:02:37,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042955147] [2024-11-28 04:02:37,496 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 04:02:37,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:02:37,518 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2024-11-28 04:02:37,519 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:02:37,625 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 04:02:37,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:02:37,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042955147] [2024-11-28 04:02:37,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042955147] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:02:37,625 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:02:37,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:02:37,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357619410] [2024-11-28 04:02:37,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:02:37,629 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:02:37,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:02:37,629 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:02:37,629 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:02:37,631 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 32 [2024-11-28 04:02:37,631 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 37 transitions, 167 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 04:02:37,632 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:02:37,633 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 32 [2024-11-28 04:02:37,633 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:02:37,701 INFO L124 PetriNetUnfolderBase]: 72/282 cut-off events. [2024-11-28 04:02:37,701 INFO L125 PetriNetUnfolderBase]: For 236/240 co-relation queries the response was YES. [2024-11-28 04:02:37,702 INFO L83 FinitePrefix]: Finished finitePrefix Result has 715 conditions, 282 events. 72/282 cut-off events. For 236/240 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1508 event pairs, 71 based on Foata normal form. 8/266 useless extension candidates. Maximal degree in co-relation 410. Up to 175 conditions per place. [2024-11-28 04:02:37,704 INFO L140 encePairwiseOnDemand]: 29/32 looper letters, 13 selfloop transitions, 2 changer transitions 0/38 dead transitions. [2024-11-28 04:02:37,704 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 38 transitions, 199 flow [2024-11-28 04:02:37,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:02:37,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 04:02:37,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 67 transitions. [2024-11-28 04:02:37,705 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6979166666666666 [2024-11-28 04:02:37,705 INFO L175 Difference]: Start difference. First operand has 57 places, 37 transitions, 167 flow. Second operand 3 states and 67 transitions. [2024-11-28 04:02:37,705 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 38 transitions, 199 flow [2024-11-28 04:02:37,707 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 38 transitions, 176 flow, removed 2 selfloop flow, removed 7 redundant places. [2024-11-28 04:02:37,708 INFO L231 Difference]: Finished difference. Result has 52 places, 37 transitions, 152 flow [2024-11-28 04:02:37,709 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=152, PETRI_PLACES=52, PETRI_TRANSITIONS=37} [2024-11-28 04:02:37,710 INFO L279 CegarLoopForPetriNet]: 36 programPoint places, 16 predicate places. [2024-11-28 04:02:37,710 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 37 transitions, 152 flow [2024-11-28 04:02:37,710 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 04:02:37,710 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:02:37,710 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] [2024-11-28 04:02:37,710 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-28 04:02:37,711 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 04:02:37,711 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:02:37,711 INFO L85 PathProgramCache]: Analyzing trace with hash 136316791, now seen corresponding path program 7 times [2024-11-28 04:02:37,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:02:37,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276018386] [2024-11-28 04:02:37,712 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 04:02:37,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:02:37,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:02:37,899 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 04:02:37,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:02:37,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276018386] [2024-11-28 04:02:37,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276018386] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:02:37,900 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:02:37,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 04:02:37,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240512782] [2024-11-28 04:02:37,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:02:37,901 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 04:02:37,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:02:37,901 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 04:02:37,902 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:02:37,918 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 32 [2024-11-28 04:02:37,918 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 37 transitions, 152 flow. Second operand has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 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 04:02:37,918 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:02:37,919 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 32 [2024-11-28 04:02:37,919 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:02:38,113 INFO L124 PetriNetUnfolderBase]: 94/255 cut-off events. [2024-11-28 04:02:38,114 INFO L125 PetriNetUnfolderBase]: For 236/236 co-relation queries the response was YES. [2024-11-28 04:02:38,114 INFO L83 FinitePrefix]: Finished finitePrefix Result has 691 conditions, 255 events. 94/255 cut-off events. For 236/236 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1030 event pairs, 44 based on Foata normal form. 4/249 useless extension candidates. Maximal degree in co-relation 438. Up to 146 conditions per place. [2024-11-28 04:02:38,115 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 18 selfloop transitions, 3 changer transitions 9/43 dead transitions. [2024-11-28 04:02:38,115 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 43 transitions, 224 flow [2024-11-28 04:02:38,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:02:38,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-28 04:02:38,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 96 transitions. [2024-11-28 04:02:38,117 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6 [2024-11-28 04:02:38,117 INFO L175 Difference]: Start difference. First operand has 52 places, 37 transitions, 152 flow. Second operand 5 states and 96 transitions. [2024-11-28 04:02:38,117 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 43 transitions, 224 flow [2024-11-28 04:02:38,118 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 43 transitions, 218 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-11-28 04:02:38,119 INFO L231 Difference]: Finished difference. Result has 53 places, 31 transitions, 121 flow [2024-11-28 04:02:38,119 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=135, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=121, PETRI_PLACES=53, PETRI_TRANSITIONS=31} [2024-11-28 04:02:38,119 INFO L279 CegarLoopForPetriNet]: 36 programPoint places, 17 predicate places. [2024-11-28 04:02:38,120 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 31 transitions, 121 flow [2024-11-28 04:02:38,120 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 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 04:02:38,120 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:02:38,120 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] [2024-11-28 04:02:38,120 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-28 04:02:38,121 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-28 04:02:38,121 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:02:38,121 INFO L85 PathProgramCache]: Analyzing trace with hash 647429889, now seen corresponding path program 8 times [2024-11-28 04:02:38,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:02:38,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808237295] [2024-11-28 04:02:38,122 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:02:38,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:02:38,133 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-28 04:02:38,133 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:02:38,239 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 04:02:38,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:02:38,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808237295] [2024-11-28 04:02:38,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1808237295] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:02:38,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:02:38,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 04:02:38,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421510367] [2024-11-28 04:02:38,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:02:38,241 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 04:02:38,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:02:38,241 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 04:02:38,241 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:02:38,259 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 32 [2024-11-28 04:02:38,259 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 31 transitions, 121 flow. Second operand has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 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 04:02:38,260 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:02:38,260 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 32 [2024-11-28 04:02:38,260 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:02:38,353 INFO L124 PetriNetUnfolderBase]: 21/68 cut-off events. [2024-11-28 04:02:38,353 INFO L125 PetriNetUnfolderBase]: For 58/58 co-relation queries the response was YES. [2024-11-28 04:02:38,353 INFO L83 FinitePrefix]: Finished finitePrefix Result has 201 conditions, 68 events. 21/68 cut-off events. For 58/58 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 163 event pairs, 5 based on Foata normal form. 4/71 useless extension candidates. Maximal degree in co-relation 188. Up to 18 conditions per place. [2024-11-28 04:02:38,354 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 0 selfloop transitions, 0 changer transitions 29/29 dead transitions. [2024-11-28 04:02:38,354 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 29 transitions, 152 flow [2024-11-28 04:02:38,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 04:02:38,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-28 04:02:38,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 113 transitions. [2024-11-28 04:02:38,355 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5044642857142857 [2024-11-28 04:02:38,355 INFO L175 Difference]: Start difference. First operand has 53 places, 31 transitions, 121 flow. Second operand 7 states and 113 transitions. [2024-11-28 04:02:38,355 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 29 transitions, 152 flow [2024-11-28 04:02:38,356 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 29 transitions, 121 flow, removed 9 selfloop flow, removed 10 redundant places. [2024-11-28 04:02:38,356 INFO L231 Difference]: Finished difference. Result has 37 places, 0 transitions, 0 flow [2024-11-28 04:02:38,357 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=59, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=37, PETRI_TRANSITIONS=0} [2024-11-28 04:02:38,357 INFO L279 CegarLoopForPetriNet]: 36 programPoint places, 1 predicate places. [2024-11-28 04:02:38,357 INFO L471 AbstractCegarLoop]: Abstraction has has 37 places, 0 transitions, 0 flow [2024-11-28 04:02:38,358 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 7 states have internal predecessors, (109), 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 04:02:38,360 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2024-11-28 04:02:38,360 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2024-11-28 04:02:38,361 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2024-11-28 04:02:38,361 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-28 04:02:38,361 INFO L422 BasicCegarLoop]: Path program histogram: [8] [2024-11-28 04:02:38,368 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-28 04:02:38,369 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-28 04:02:38,374 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 04:02:38 BasicIcfg [2024-11-28 04:02:38,374 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-28 04:02:38,374 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-28 04:02:38,374 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-28 04:02:38,374 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-28 04:02:38,375 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:02:34" (3/4) ... [2024-11-28 04:02:38,377 INFO L146 WitnessPrinter]: Generating witness for correct program [2024-11-28 04:02:38,381 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2024-11-28 04:02:38,381 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2024-11-28 04:02:38,385 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 38 nodes and edges [2024-11-28 04:02:38,386 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2024-11-28 04:02:38,387 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-11-28 04:02:38,387 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-28 04:02:38,461 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f99f2e75-cce7-431c-8b2f-b9f14bfb9110/bin/uautomizer-verify-aQ6SnzHsRB/witness.graphml [2024-11-28 04:02:38,462 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f99f2e75-cce7-431c-8b2f-b9f14bfb9110/bin/uautomizer-verify-aQ6SnzHsRB/witness.yml [2024-11-28 04:02:38,462 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-28 04:02:38,463 INFO L158 Benchmark]: Toolchain (without parser) took 5188.84ms. Allocated memory was 117.4MB in the beginning and 352.3MB in the end (delta: 234.9MB). Free memory was 94.5MB in the beginning and 278.1MB in the end (delta: -183.6MB). Peak memory consumption was 47.1MB. Max. memory is 16.1GB. [2024-11-28 04:02:38,464 INFO L158 Benchmark]: CDTParser took 1.70ms. Allocated memory is still 167.8MB. Free memory is still 102.3MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 04:02:38,465 INFO L158 Benchmark]: CACSL2BoogieTranslator took 228.17ms. Allocated memory is still 117.4MB. Free memory was 94.2MB in the beginning and 83.0MB in the end (delta: 11.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-28 04:02:38,466 INFO L158 Benchmark]: Boogie Procedure Inliner took 26.65ms. Allocated memory is still 117.4MB. Free memory was 83.0MB in the beginning and 81.5MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 04:02:38,466 INFO L158 Benchmark]: Boogie Preprocessor took 39.19ms. Allocated memory is still 117.4MB. Free memory was 81.5MB in the beginning and 80.1MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 04:02:38,467 INFO L158 Benchmark]: RCFGBuilder took 502.33ms. Allocated memory is still 117.4MB. Free memory was 80.1MB in the beginning and 58.5MB in the end (delta: 21.5MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2024-11-28 04:02:38,467 INFO L158 Benchmark]: TraceAbstraction took 4297.74ms. Allocated memory was 117.4MB in the beginning and 352.3MB in the end (delta: 234.9MB). Free memory was 58.2MB in the beginning and 284.5MB in the end (delta: -226.3MB). Peak memory consumption was 5.1MB. Max. memory is 16.1GB. [2024-11-28 04:02:38,468 INFO L158 Benchmark]: Witness Printer took 87.69ms. Allocated memory is still 352.3MB. Free memory was 284.5MB in the beginning and 278.1MB in the end (delta: 6.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-28 04:02:38,470 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.70ms. Allocated memory is still 167.8MB. Free memory is still 102.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 228.17ms. Allocated memory is still 117.4MB. Free memory was 94.2MB in the beginning and 83.0MB in the end (delta: 11.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 26.65ms. Allocated memory is still 117.4MB. Free memory was 83.0MB in the beginning and 81.5MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 39.19ms. Allocated memory is still 117.4MB. Free memory was 81.5MB in the beginning and 80.1MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 502.33ms. Allocated memory is still 117.4MB. Free memory was 80.1MB in the beginning and 58.5MB in the end (delta: 21.5MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * TraceAbstraction took 4297.74ms. Allocated memory was 117.4MB in the beginning and 352.3MB in the end (delta: 234.9MB). Free memory was 58.2MB in the beginning and 284.5MB in the end (delta: -226.3MB). Peak memory consumption was 5.1MB. Max. memory is 16.1GB. * Witness Printer took 87.69ms. Allocated memory is still 352.3MB. Free memory was 284.5MB in the beginning and 278.1MB in the end (delta: 6.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 80]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 57 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 4.2s, OverallIterations: 8, TraceHistogramMax: 1, PathProgramHistogramMax: 8, EmptinessCheckTime: 0.0s, AutomataDifference: 2.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 318 SdHoareTripleChecker+Valid, 0.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 291 mSDsluCounter, 81 SdHoareTripleChecker+Invalid, 0.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 44 mSDsCounter, 17 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 778 IncrementalHoareTripleChecker+Invalid, 795 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 17 mSolverCounterUnsat, 37 mSDtfsCounter, 778 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 67 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=175occurred in iteration=3, InterpolantAutomatonStates: 49, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.7s InterpolantComputationTime, 232 NumberOfCodeBlocks, 232 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 224 ConstructedInterpolants, 0 QuantifiedInterpolants, 626 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-11-28 04:02:38,489 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f99f2e75-cce7-431c-8b2f-b9f14bfb9110/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE