./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/popl20-bad-ring-nondet.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_d29641d5-8efc-468f-ba26-ef74b05f2d73/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29641d5-8efc-468f-ba26-ef74b05f2d73/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_d29641d5-8efc-468f-ba26-ef74b05f2d73/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29641d5-8efc-468f-ba26-ef74b05f2d73/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-bad-ring-nondet.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29641d5-8efc-468f-ba26-ef74b05f2d73/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_d29641d5-8efc-468f-ba26-ef74b05f2d73/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 01186d000498d57447d1d7ea86dd893215c56febea2169abeb96f12030a58ea4 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 03:26:37,277 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 03:26:37,400 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29641d5-8efc-468f-ba26-ef74b05f2d73/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-28 03:26:37,406 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 03:26:37,410 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 03:26:37,457 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 03:26:37,459 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 03:26:37,459 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 03:26:37,459 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 03:26:37,460 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 03:26:37,461 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 03:26:37,461 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 03:26:37,462 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 03:26:37,462 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 03:26:37,463 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 03:26:37,463 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 03:26:37,463 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 03:26:37,463 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 03:26:37,463 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 03:26:37,463 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 03:26:37,463 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 03:26:37,463 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 03:26:37,464 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 03:26:37,464 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 03:26:37,464 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 03:26:37,464 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 03:26:37,464 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 03:26:37,464 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 03:26:37,464 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 03:26:37,464 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 03:26:37,464 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 03:26:37,465 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 03:26:37,465 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:26:37,465 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 03:26:37,465 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 03:26:37,465 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 03:26:37,465 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 03:26:37,465 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:26:37,465 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 03:26:37,466 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 03:26:37,466 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 03:26:37,466 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 03:26:37,467 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 03:26:37,467 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 03:26:37,467 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 03:26:37,468 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 03:26:37,468 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 03:26:37,468 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 03:26:37,468 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_d29641d5-8efc-468f-ba26-ef74b05f2d73/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 -> 01186d000498d57447d1d7ea86dd893215c56febea2169abeb96f12030a58ea4 [2024-11-28 03:26:37,855 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 03:26:37,874 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 03:26:37,876 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 03:26:37,882 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 03:26:37,883 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 03:26:37,884 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29641d5-8efc-468f-ba26-ef74b05f2d73/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/weaver/popl20-bad-ring-nondet.wvr.c [2024-11-28 03:26:41,423 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29641d5-8efc-468f-ba26-ef74b05f2d73/bin/uautomizer-verify-aQ6SnzHsRB/data/f1c00dd56/fab95185b8154845b0f03e9d2e24460b/FLAG1033fbb38 [2024-11-28 03:26:41,768 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 03:26:41,769 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29641d5-8efc-468f-ba26-ef74b05f2d73/sv-benchmarks/c/weaver/popl20-bad-ring-nondet.wvr.c [2024-11-28 03:26:41,784 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29641d5-8efc-468f-ba26-ef74b05f2d73/bin/uautomizer-verify-aQ6SnzHsRB/data/f1c00dd56/fab95185b8154845b0f03e9d2e24460b/FLAG1033fbb38 [2024-11-28 03:26:42,007 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29641d5-8efc-468f-ba26-ef74b05f2d73/bin/uautomizer-verify-aQ6SnzHsRB/data/f1c00dd56/fab95185b8154845b0f03e9d2e24460b [2024-11-28 03:26:42,010 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 03:26:42,012 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 03:26:42,013 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 03:26:42,015 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 03:26:42,024 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 03:26:42,025 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:26:42" (1/1) ... [2024-11-28 03:26:42,026 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@488c6341 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:26:42, skipping insertion in model container [2024-11-28 03:26:42,026 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:26:42" (1/1) ... [2024-11-28 03:26:42,053 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 03:26:42,319 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_d29641d5-8efc-468f-ba26-ef74b05f2d73/sv-benchmarks/c/weaver/popl20-bad-ring-nondet.wvr.c[4124,4137] [2024-11-28 03:26:42,334 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:26:42,353 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 03:26:42,411 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_d29641d5-8efc-468f-ba26-ef74b05f2d73/sv-benchmarks/c/weaver/popl20-bad-ring-nondet.wvr.c[4124,4137] [2024-11-28 03:26:42,418 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:26:42,447 INFO L204 MainTranslator]: Completed translation [2024-11-28 03:26:42,448 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:26:42 WrapperNode [2024-11-28 03:26:42,450 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 03:26:42,451 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 03:26:42,451 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 03:26:42,451 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 03:26:42,461 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:26:42" (1/1) ... [2024-11-28 03:26:42,471 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:26:42" (1/1) ... [2024-11-28 03:26:42,505 INFO L138 Inliner]: procedures = 24, calls = 48, calls flagged for inlining = 16, calls inlined = 20, statements flattened = 309 [2024-11-28 03:26:42,505 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 03:26:42,506 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 03:26:42,506 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 03:26:42,506 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 03:26:42,518 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:26:42" (1/1) ... [2024-11-28 03:26:42,518 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:26:42" (1/1) ... [2024-11-28 03:26:42,522 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:26:42" (1/1) ... [2024-11-28 03:26:42,543 INFO L175 MemorySlicer]: Split 12 memory accesses to 2 slices as follows [2, 10]. 83 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 3 writes are split as follows [0, 3]. [2024-11-28 03:26:42,543 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:26:42" (1/1) ... [2024-11-28 03:26:42,543 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:26:42" (1/1) ... [2024-11-28 03:26:42,554 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:26:42" (1/1) ... [2024-11-28 03:26:42,556 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:26:42" (1/1) ... [2024-11-28 03:26:42,561 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:26:42" (1/1) ... [2024-11-28 03:26:42,563 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:26:42" (1/1) ... [2024-11-28 03:26:42,565 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:26:42" (1/1) ... [2024-11-28 03:26:42,569 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 03:26:42,570 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 03:26:42,570 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 03:26:42,570 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 03:26:42,571 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:26:42" (1/1) ... [2024-11-28 03:26:42,578 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:26:42,595 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29641d5-8efc-468f-ba26-ef74b05f2d73/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:26:42,612 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29641d5-8efc-468f-ba26-ef74b05f2d73/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 03:26:42,618 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29641d5-8efc-468f-ba26-ef74b05f2d73/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 03:26:42,653 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 03:26:42,654 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-28 03:26:42,654 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-28 03:26:42,654 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-28 03:26:42,654 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-28 03:26:42,654 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-28 03:26:42,654 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-28 03:26:42,655 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 03:26:42,655 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-28 03:26:42,655 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-28 03:26:42,655 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-28 03:26:42,655 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-28 03:26:42,656 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-28 03:26:42,656 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-28 03:26:42,656 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 03:26:42,657 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 03:26:42,657 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-28 03:26:42,657 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-28 03:26:42,659 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 03:26:42,841 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 03:26:42,844 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 03:26:43,596 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-28 03:26:43,596 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 03:26:44,183 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 03:26:44,183 INFO L312 CfgBuilder]: Removed 8 assume(true) statements. [2024-11-28 03:26:44,184 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:26:44 BoogieIcfgContainer [2024-11-28 03:26:44,184 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 03:26:44,186 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 03:26:44,186 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 03:26:44,192 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 03:26:44,193 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:26:42" (1/3) ... [2024-11-28 03:26:44,198 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1643540a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:26:44, skipping insertion in model container [2024-11-28 03:26:44,198 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:26:42" (2/3) ... [2024-11-28 03:26:44,198 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1643540a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:26:44, skipping insertion in model container [2024-11-28 03:26:44,198 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:26:44" (3/3) ... [2024-11-28 03:26:44,200 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-bad-ring-nondet.wvr.c [2024-11-28 03:26:44,220 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 03:26:44,222 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-bad-ring-nondet.wvr.c that has 4 procedures, 43 locations, 1 initial locations, 6 loop locations, and 1 error locations. [2024-11-28 03:26:44,223 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-28 03:26:44,343 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-28 03:26:44,400 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 52 places, 54 transitions, 129 flow [2024-11-28 03:26:44,513 INFO L124 PetriNetUnfolderBase]: 12/51 cut-off events. [2024-11-28 03:26:44,516 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-28 03:26:44,521 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64 conditions, 51 events. 12/51 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 103 event pairs, 0 based on Foata normal form. 0/38 useless extension candidates. Maximal degree in co-relation 41. Up to 3 conditions per place. [2024-11-28 03:26:44,524 INFO L82 GeneralOperation]: Start removeDead. Operand has 52 places, 54 transitions, 129 flow [2024-11-28 03:26:44,529 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 48 places, 50 transitions, 118 flow [2024-11-28 03:26:44,539 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 03:26:44,553 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;@3b88c622, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 03:26:44,553 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-28 03:26:44,575 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-28 03:26:44,575 INFO L124 PetriNetUnfolderBase]: 12/49 cut-off events. [2024-11-28 03:26:44,575 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-28 03:26:44,576 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:26:44,576 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] [2024-11-28 03:26:44,577 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 03:26:44,588 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:26:44,588 INFO L85 PathProgramCache]: Analyzing trace with hash 319481922, now seen corresponding path program 1 times [2024-11-28 03:26:44,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:26:44,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476432007] [2024-11-28 03:26:44,599 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:26:44,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:26:44,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:26:44,935 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 03:26:44,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:26:44,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476432007] [2024-11-28 03:26:44,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476432007] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:26:44,941 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:26:44,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 03:26:44,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949858418] [2024-11-28 03:26:44,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:26:44,954 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-28 03:26:44,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:26:44,992 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-28 03:26:44,993 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 03:26:44,995 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 54 [2024-11-28 03:26:44,998 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 50 transitions, 118 flow. Second operand has 2 states, 2 states have (on average 27.0) internal successors, (54), 2 states have internal predecessors, (54), 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 03:26:44,998 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:26:44,998 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 54 [2024-11-28 03:26:45,000 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:26:45,644 INFO L124 PetriNetUnfolderBase]: 1319/2148 cut-off events. [2024-11-28 03:26:45,645 INFO L125 PetriNetUnfolderBase]: For 98/98 co-relation queries the response was YES. [2024-11-28 03:26:45,669 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4057 conditions, 2148 events. 1319/2148 cut-off events. For 98/98 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 11323 event pairs, 1106 based on Foata normal form. 0/1858 useless extension candidates. Maximal degree in co-relation 3850. Up to 1766 conditions per place. [2024-11-28 03:26:45,693 INFO L140 encePairwiseOnDemand]: 50/54 looper letters, 34 selfloop transitions, 0 changer transitions 0/46 dead transitions. [2024-11-28 03:26:45,696 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 46 transitions, 178 flow [2024-11-28 03:26:45,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-28 03:26:45,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-28 03:26:45,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 68 transitions. [2024-11-28 03:26:45,719 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6296296296296297 [2024-11-28 03:26:45,721 INFO L175 Difference]: Start difference. First operand has 48 places, 50 transitions, 118 flow. Second operand 2 states and 68 transitions. [2024-11-28 03:26:45,723 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 46 transitions, 178 flow [2024-11-28 03:26:45,739 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 46 transitions, 166 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-28 03:26:45,743 INFO L231 Difference]: Finished difference. Result has 43 places, 46 transitions, 98 flow [2024-11-28 03:26:45,746 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=98, PETRI_PLACES=43, PETRI_TRANSITIONS=46} [2024-11-28 03:26:45,753 INFO L279 CegarLoopForPetriNet]: 48 programPoint places, -5 predicate places. [2024-11-28 03:26:45,753 INFO L471 AbstractCegarLoop]: Abstraction has has 43 places, 46 transitions, 98 flow [2024-11-28 03:26:45,753 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 27.0) internal successors, (54), 2 states have internal predecessors, (54), 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 03:26:45,753 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:26:45,753 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 03:26:45,754 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 03:26:45,754 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 03:26:45,756 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:26:45,756 INFO L85 PathProgramCache]: Analyzing trace with hash 764337513, now seen corresponding path program 1 times [2024-11-28 03:26:45,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:26:45,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041193609] [2024-11-28 03:26:45,756 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:26:45,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:26:45,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:26:46,074 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 03:26:46,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:26:46,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041193609] [2024-11-28 03:26:46,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041193609] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:26:46,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:26:46,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 03:26:46,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919919494] [2024-11-28 03:26:46,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:26:46,076 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:26:46,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:26:46,077 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:26:46,077 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:26:46,077 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 54 [2024-11-28 03:26:46,078 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 46 transitions, 98 flow. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 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 03:26:46,078 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:26:46,078 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 54 [2024-11-28 03:26:46,078 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:26:46,874 INFO L124 PetriNetUnfolderBase]: 2362/3904 cut-off events. [2024-11-28 03:26:46,875 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2024-11-28 03:26:46,886 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7214 conditions, 3904 events. 2362/3904 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 22621 event pairs, 1106 based on Foata normal form. 1/3429 useless extension candidates. Maximal degree in co-relation 7211. Up to 1702 conditions per place. [2024-11-28 03:26:46,904 INFO L140 encePairwiseOnDemand]: 51/54 looper letters, 51 selfloop transitions, 2 changer transitions 5/70 dead transitions. [2024-11-28 03:26:46,904 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 70 transitions, 267 flow [2024-11-28 03:26:46,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:26:46,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 03:26:46,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 104 transitions. [2024-11-28 03:26:46,906 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6419753086419753 [2024-11-28 03:26:46,906 INFO L175 Difference]: Start difference. First operand has 43 places, 46 transitions, 98 flow. Second operand 3 states and 104 transitions. [2024-11-28 03:26:46,906 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 70 transitions, 267 flow [2024-11-28 03:26:46,907 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 70 transitions, 267 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-28 03:26:46,909 INFO L231 Difference]: Finished difference. Result has 46 places, 47 transitions, 110 flow [2024-11-28 03:26:46,910 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=110, PETRI_PLACES=46, PETRI_TRANSITIONS=47} [2024-11-28 03:26:46,910 INFO L279 CegarLoopForPetriNet]: 48 programPoint places, -2 predicate places. [2024-11-28 03:26:46,911 INFO L471 AbstractCegarLoop]: Abstraction has has 46 places, 47 transitions, 110 flow [2024-11-28 03:26:46,912 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 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 03:26:46,912 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:26:46,912 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, 1, 1, 1] [2024-11-28 03:26:46,912 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 03:26:46,913 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 03:26:46,914 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:26:46,915 INFO L85 PathProgramCache]: Analyzing trace with hash 41733993, now seen corresponding path program 1 times [2024-11-28 03:26:46,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:26:46,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886531990] [2024-11-28 03:26:46,915 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:26:46,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:26:47,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:26:47,380 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 03:26:47,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:26:47,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886531990] [2024-11-28 03:26:47,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1886531990] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:26:47,381 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:26:47,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 03:26:47,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313819161] [2024-11-28 03:26:47,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:26:47,383 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:26:47,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:26:47,385 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:26:47,385 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:26:47,390 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 54 [2024-11-28 03:26:47,390 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 47 transitions, 110 flow. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 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 03:26:47,391 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:26:47,391 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 54 [2024-11-28 03:26:47,391 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:26:48,211 INFO L124 PetriNetUnfolderBase]: 2822/4692 cut-off events. [2024-11-28 03:26:48,212 INFO L125 PetriNetUnfolderBase]: For 206/206 co-relation queries the response was YES. [2024-11-28 03:26:48,227 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8856 conditions, 4692 events. 2822/4692 cut-off events. For 206/206 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 28424 event pairs, 849 based on Foata normal form. 132/4118 useless extension candidates. Maximal degree in co-relation 8851. Up to 2998 conditions per place. [2024-11-28 03:26:48,249 INFO L140 encePairwiseOnDemand]: 50/54 looper letters, 50 selfloop transitions, 3 changer transitions 0/65 dead transitions. [2024-11-28 03:26:48,249 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 65 transitions, 259 flow [2024-11-28 03:26:48,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:26:48,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 03:26:48,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 97 transitions. [2024-11-28 03:26:48,252 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5987654320987654 [2024-11-28 03:26:48,252 INFO L175 Difference]: Start difference. First operand has 46 places, 47 transitions, 110 flow. Second operand 3 states and 97 transitions. [2024-11-28 03:26:48,252 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 65 transitions, 259 flow [2024-11-28 03:26:48,255 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 65 transitions, 256 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 03:26:48,257 INFO L231 Difference]: Finished difference. Result has 48 places, 49 transitions, 127 flow [2024-11-28 03:26:48,258 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=127, PETRI_PLACES=48, PETRI_TRANSITIONS=49} [2024-11-28 03:26:48,259 INFO L279 CegarLoopForPetriNet]: 48 programPoint places, 0 predicate places. [2024-11-28 03:26:48,259 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 49 transitions, 127 flow [2024-11-28 03:26:48,260 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 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 03:26:48,260 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:26:48,261 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, 1, 1, 1] [2024-11-28 03:26:48,261 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 03:26:48,261 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 03:26:48,262 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:26:48,263 INFO L85 PathProgramCache]: Analyzing trace with hash -1679638891, now seen corresponding path program 2 times [2024-11-28 03:26:48,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:26:48,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704490824] [2024-11-28 03:26:48,263 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:26:48,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:26:48,323 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-28 03:26:48,323 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:26:48,534 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 03:26:48,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:26:48,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704490824] [2024-11-28 03:26:48,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704490824] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:26:48,535 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:26:48,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 03:26:48,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945325930] [2024-11-28 03:26:48,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:26:48,536 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:26:48,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:26:48,537 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:26:48,537 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:26:48,539 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 54 [2024-11-28 03:26:48,540 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 49 transitions, 127 flow. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 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 03:26:48,540 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:26:48,540 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 54 [2024-11-28 03:26:48,540 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:26:49,226 INFO L124 PetriNetUnfolderBase]: 2260/3830 cut-off events. [2024-11-28 03:26:49,227 INFO L125 PetriNetUnfolderBase]: For 600/600 co-relation queries the response was YES. [2024-11-28 03:26:49,236 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7848 conditions, 3830 events. 2260/3830 cut-off events. For 600/600 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 22714 event pairs, 851 based on Foata normal form. 134/3376 useless extension candidates. Maximal degree in co-relation 7842. Up to 1904 conditions per place. [2024-11-28 03:26:49,254 INFO L140 encePairwiseOnDemand]: 51/54 looper letters, 51 selfloop transitions, 2 changer transitions 0/65 dead transitions. [2024-11-28 03:26:49,255 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 65 transitions, 277 flow [2024-11-28 03:26:49,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:26:49,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 03:26:49,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 95 transitions. [2024-11-28 03:26:49,257 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5864197530864198 [2024-11-28 03:26:49,257 INFO L175 Difference]: Start difference. First operand has 48 places, 49 transitions, 127 flow. Second operand 3 states and 95 transitions. [2024-11-28 03:26:49,257 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 65 transitions, 277 flow [2024-11-28 03:26:49,258 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 65 transitions, 274 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 03:26:49,262 INFO L231 Difference]: Finished difference. Result has 50 places, 50 transitions, 136 flow [2024-11-28 03:26:49,262 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=136, PETRI_PLACES=50, PETRI_TRANSITIONS=50} [2024-11-28 03:26:49,263 INFO L279 CegarLoopForPetriNet]: 48 programPoint places, 2 predicate places. [2024-11-28 03:26:49,264 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 50 transitions, 136 flow [2024-11-28 03:26:49,265 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 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 03:26:49,265 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:26:49,266 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, 1, 1, 1] [2024-11-28 03:26:49,266 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-28 03:26:49,267 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 03:26:49,267 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:26:49,268 INFO L85 PathProgramCache]: Analyzing trace with hash -1688147713, now seen corresponding path program 3 times [2024-11-28 03:26:49,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:26:49,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111789029] [2024-11-28 03:26:49,269 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 03:26:49,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:26:49,339 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-28 03:26:49,339 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:26:49,609 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 03:26:49,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:26:49,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111789029] [2024-11-28 03:26:49,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2111789029] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:26:49,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:26:49,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 03:26:49,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125425784] [2024-11-28 03:26:49,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:26:49,611 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:26:49,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:26:49,612 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:26:49,612 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:26:49,613 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 54 [2024-11-28 03:26:49,613 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 50 transitions, 136 flow. Second operand has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 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 03:26:49,613 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:26:49,613 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 54 [2024-11-28 03:26:49,614 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:26:50,354 INFO L124 PetriNetUnfolderBase]: 2309/3913 cut-off events. [2024-11-28 03:26:50,355 INFO L125 PetriNetUnfolderBase]: For 744/744 co-relation queries the response was YES. [2024-11-28 03:26:50,364 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8428 conditions, 3913 events. 2309/3913 cut-off events. For 744/744 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 23035 event pairs, 1710 based on Foata normal form. 14/3336 useless extension candidates. Maximal degree in co-relation 8421. Up to 3136 conditions per place. [2024-11-28 03:26:50,385 INFO L140 encePairwiseOnDemand]: 48/54 looper letters, 37 selfloop transitions, 2 changer transitions 15/66 dead transitions. [2024-11-28 03:26:50,385 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 66 transitions, 279 flow [2024-11-28 03:26:50,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 03:26:50,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-28 03:26:50,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 127 transitions. [2024-11-28 03:26:50,387 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4703703703703704 [2024-11-28 03:26:50,387 INFO L175 Difference]: Start difference. First operand has 50 places, 50 transitions, 136 flow. Second operand 5 states and 127 transitions. [2024-11-28 03:26:50,387 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 66 transitions, 279 flow [2024-11-28 03:26:50,393 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 66 transitions, 277 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 03:26:50,394 INFO L231 Difference]: Finished difference. Result has 56 places, 51 transitions, 152 flow [2024-11-28 03:26:50,398 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=152, PETRI_PLACES=56, PETRI_TRANSITIONS=51} [2024-11-28 03:26:50,399 INFO L279 CegarLoopForPetriNet]: 48 programPoint places, 8 predicate places. [2024-11-28 03:26:50,399 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 51 transitions, 152 flow [2024-11-28 03:26:50,399 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 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 03:26:50,399 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:26:50,400 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, 1, 1, 1, 1] [2024-11-28 03:26:50,400 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-28 03:26:50,400 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 03:26:50,401 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:26:50,404 INFO L85 PathProgramCache]: Analyzing trace with hash 1978528614, now seen corresponding path program 1 times [2024-11-28 03:26:50,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:26:50,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009044312] [2024-11-28 03:26:50,404 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:26:50,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:26:50,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:26:50,509 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 03:26:50,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:26:50,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009044312] [2024-11-28 03:26:50,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2009044312] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:26:50,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:26:50,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 03:26:50,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884682706] [2024-11-28 03:26:50,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:26:50,512 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:26:50,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:26:50,513 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:26:50,513 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:26:50,513 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 54 [2024-11-28 03:26:50,514 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 51 transitions, 152 flow. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 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 03:26:50,514 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:26:50,514 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 54 [2024-11-28 03:26:50,514 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:26:51,217 INFO L124 PetriNetUnfolderBase]: 2417/4308 cut-off events. [2024-11-28 03:26:51,218 INFO L125 PetriNetUnfolderBase]: For 1112/1132 co-relation queries the response was YES. [2024-11-28 03:26:51,230 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9149 conditions, 4308 events. 2417/4308 cut-off events. For 1112/1132 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 26836 event pairs, 903 based on Foata normal form. 140/4018 useless extension candidates. Maximal degree in co-relation 9139. Up to 1675 conditions per place. [2024-11-28 03:26:51,255 INFO L140 encePairwiseOnDemand]: 51/54 looper letters, 50 selfloop transitions, 3 changer transitions 1/66 dead transitions. [2024-11-28 03:26:51,255 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 66 transitions, 302 flow [2024-11-28 03:26:51,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:26:51,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 03:26:51,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 94 transitions. [2024-11-28 03:26:51,260 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5802469135802469 [2024-11-28 03:26:51,261 INFO L175 Difference]: Start difference. First operand has 56 places, 51 transitions, 152 flow. Second operand 3 states and 94 transitions. [2024-11-28 03:26:51,261 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 66 transitions, 302 flow [2024-11-28 03:26:51,268 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 66 transitions, 290 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-11-28 03:26:51,271 INFO L231 Difference]: Finished difference. Result has 55 places, 51 transitions, 156 flow [2024-11-28 03:26:51,272 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=156, PETRI_PLACES=55, PETRI_TRANSITIONS=51} [2024-11-28 03:26:51,273 INFO L279 CegarLoopForPetriNet]: 48 programPoint places, 7 predicate places. [2024-11-28 03:26:51,274 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 51 transitions, 156 flow [2024-11-28 03:26:51,274 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 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 03:26:51,274 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:26:51,275 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 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] [2024-11-28 03:26:51,275 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-28 03:26:51,276 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 03:26:51,276 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:26:51,278 INFO L85 PathProgramCache]: Analyzing trace with hash 1217889433, now seen corresponding path program 1 times [2024-11-28 03:26:51,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:26:51,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439001940] [2024-11-28 03:26:51,278 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:26:51,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:26:51,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:26:51,486 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 03:26:51,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:26:51,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439001940] [2024-11-28 03:26:51,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439001940] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:26:51,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [68339415] [2024-11-28 03:26:51,488 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:26:51,488 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:26:51,488 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29641d5-8efc-468f-ba26-ef74b05f2d73/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:26:51,492 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29641d5-8efc-468f-ba26-ef74b05f2d73/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:26:51,496 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29641d5-8efc-468f-ba26-ef74b05f2d73/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 03:26:51,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:26:51,710 INFO L256 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 03:26:51,716 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:26:51,841 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 03:26:51,841 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:26:51,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [68339415] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:26:51,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:26:51,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2024-11-28 03:26:51,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986392757] [2024-11-28 03:26:51,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:26:51,843 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:26:51,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:26:51,844 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:26:51,844 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:26:51,845 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 54 [2024-11-28 03:26:51,845 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 51 transitions, 156 flow. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 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 03:26:51,846 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:26:51,846 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 54 [2024-11-28 03:26:51,846 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:26:52,774 INFO L124 PetriNetUnfolderBase]: 3219/5526 cut-off events. [2024-11-28 03:26:52,775 INFO L125 PetriNetUnfolderBase]: For 2731/2731 co-relation queries the response was YES. [2024-11-28 03:26:52,790 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12863 conditions, 5526 events. 3219/5526 cut-off events. For 2731/2731 co-relation queries the response was YES. Maximal size of possible extension queue 225. Compared 35228 event pairs, 2501 based on Foata normal form. 103/5001 useless extension candidates. Maximal degree in co-relation 12854. Up to 3320 conditions per place. [2024-11-28 03:26:52,810 INFO L140 encePairwiseOnDemand]: 49/54 looper letters, 38 selfloop transitions, 2 changer transitions 26/78 dead transitions. [2024-11-28 03:26:52,810 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 78 transitions, 377 flow [2024-11-28 03:26:52,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:26:52,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 03:26:52,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 120 transitions. [2024-11-28 03:26:52,812 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5555555555555556 [2024-11-28 03:26:52,813 INFO L175 Difference]: Start difference. First operand has 55 places, 51 transitions, 156 flow. Second operand 4 states and 120 transitions. [2024-11-28 03:26:52,813 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 78 transitions, 377 flow [2024-11-28 03:26:52,816 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 78 transitions, 365 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-28 03:26:52,818 INFO L231 Difference]: Finished difference. Result has 58 places, 52 transitions, 166 flow [2024-11-28 03:26:52,819 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=166, PETRI_PLACES=58, PETRI_TRANSITIONS=52} [2024-11-28 03:26:52,819 INFO L279 CegarLoopForPetriNet]: 48 programPoint places, 10 predicate places. [2024-11-28 03:26:52,819 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 52 transitions, 166 flow [2024-11-28 03:26:52,820 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 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 03:26:52,820 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:26:52,820 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 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] [2024-11-28 03:26:52,834 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29641d5-8efc-468f-ba26-ef74b05f2d73/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 03:26:53,020 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29641d5-8efc-468f-ba26-ef74b05f2d73/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-11-28 03:26:53,021 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 03:26:53,022 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:26:53,022 INFO L85 PathProgramCache]: Analyzing trace with hash 1532343775, now seen corresponding path program 1 times [2024-11-28 03:26:53,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:26:53,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762346063] [2024-11-28 03:26:53,022 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:26:53,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:26:53,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:26:53,242 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 03:26:53,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:26:53,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762346063] [2024-11-28 03:26:53,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762346063] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:26:53,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [823398214] [2024-11-28 03:26:53,243 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:26:53,244 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:26:53,244 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29641d5-8efc-468f-ba26-ef74b05f2d73/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:26:53,246 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29641d5-8efc-468f-ba26-ef74b05f2d73/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:26:53,253 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29641d5-8efc-468f-ba26-ef74b05f2d73/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 03:26:53,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:26:53,446 INFO L256 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 03:26:53,449 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:26:53,566 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-28 03:26:53,566 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:26:53,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [823398214] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:26:53,567 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:26:53,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2024-11-28 03:26:53,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116438902] [2024-11-28 03:26:53,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:26:53,567 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:26:53,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:26:53,568 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:26:53,568 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:26:53,568 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 54 [2024-11-28 03:26:53,569 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 52 transitions, 166 flow. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 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 03:26:53,569 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:26:53,569 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 54 [2024-11-28 03:26:53,569 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:26:54,401 INFO L124 PetriNetUnfolderBase]: 3205/5509 cut-off events. [2024-11-28 03:26:54,401 INFO L125 PetriNetUnfolderBase]: For 1818/1818 co-relation queries the response was YES. [2024-11-28 03:26:54,418 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12644 conditions, 5509 events. 3205/5509 cut-off events. For 1818/1818 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 35090 event pairs, 2523 based on Foata normal form. 94/4832 useless extension candidates. Maximal degree in co-relation 12633. Up to 3321 conditions per place. [2024-11-28 03:26:54,434 INFO L140 encePairwiseOnDemand]: 49/54 looper letters, 39 selfloop transitions, 2 changer transitions 26/79 dead transitions. [2024-11-28 03:26:54,434 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 79 transitions, 392 flow [2024-11-28 03:26:54,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 03:26:54,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-28 03:26:54,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 134 transitions. [2024-11-28 03:26:54,436 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4962962962962963 [2024-11-28 03:26:54,436 INFO L175 Difference]: Start difference. First operand has 58 places, 52 transitions, 166 flow. Second operand 5 states and 134 transitions. [2024-11-28 03:26:54,436 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 79 transitions, 392 flow [2024-11-28 03:26:54,440 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 79 transitions, 384 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-11-28 03:26:54,442 INFO L231 Difference]: Finished difference. Result has 63 places, 53 transitions, 178 flow [2024-11-28 03:26:54,445 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=178, PETRI_PLACES=63, PETRI_TRANSITIONS=53} [2024-11-28 03:26:54,445 INFO L279 CegarLoopForPetriNet]: 48 programPoint places, 15 predicate places. [2024-11-28 03:26:54,445 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 53 transitions, 178 flow [2024-11-28 03:26:54,446 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 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 03:26:54,446 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 03:26:54,449 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 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] [2024-11-28 03:26:54,460 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29641d5-8efc-468f-ba26-ef74b05f2d73/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-28 03:26:54,650 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29641d5-8efc-468f-ba26-ef74b05f2d73/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:26:54,650 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 03:26:54,651 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:26:54,651 INFO L85 PathProgramCache]: Analyzing trace with hash -1323002332, now seen corresponding path program 1 times [2024-11-28 03:26:54,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:26:54,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611256545] [2024-11-28 03:26:54,652 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:26:54,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:26:54,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:26:54,877 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 03:26:54,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:26:54,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611256545] [2024-11-28 03:26:54,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611256545] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:26:54,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [604480466] [2024-11-28 03:26:54,881 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:26:54,881 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:26:54,882 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29641d5-8efc-468f-ba26-ef74b05f2d73/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:26:54,884 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29641d5-8efc-468f-ba26-ef74b05f2d73/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:26:54,887 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29641d5-8efc-468f-ba26-ef74b05f2d73/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 03:26:55,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:26:55,074 INFO L256 TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-28 03:26:55,077 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:26:55,147 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 8 [2024-11-28 03:26:55,155 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 03:26:55,155 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:26:55,212 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 03:26:55,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [604480466] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:26:55,213 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:26:55,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 6 [2024-11-28 03:26:55,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693638422] [2024-11-28 03:26:55,213 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:26:55,213 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 03:26:55,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:26:55,216 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 03:26:55,217 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-28 03:26:55,219 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 54 [2024-11-28 03:26:55,219 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 53 transitions, 178 flow. Second operand has 6 states, 6 states have (on average 20.5) internal successors, (123), 6 states have internal predecessors, (123), 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 03:26:55,219 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 03:26:55,219 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 54 [2024-11-28 03:26:55,219 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 03:26:55,962 INFO L124 PetriNetUnfolderBase]: 2219/3925 cut-off events. [2024-11-28 03:26:55,962 INFO L125 PetriNetUnfolderBase]: For 1385/1385 co-relation queries the response was YES. [2024-11-28 03:26:55,974 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8668 conditions, 3925 events. 2219/3925 cut-off events. For 1385/1385 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 24260 event pairs, 722 based on Foata normal form. 0/3539 useless extension candidates. Maximal degree in co-relation 8654. Up to 1299 conditions per place. [2024-11-28 03:26:55,979 INFO L140 encePairwiseOnDemand]: 51/54 looper letters, 0 selfloop transitions, 0 changer transitions 95/95 dead transitions. [2024-11-28 03:26:55,979 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 95 transitions, 472 flow [2024-11-28 03:26:55,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 03:26:55,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-28 03:26:55,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 147 transitions. [2024-11-28 03:26:55,981 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5444444444444444 [2024-11-28 03:26:55,981 INFO L175 Difference]: Start difference. First operand has 63 places, 53 transitions, 178 flow. Second operand 5 states and 147 transitions. [2024-11-28 03:26:55,981 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 95 transitions, 472 flow [2024-11-28 03:26:55,985 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 95 transitions, 458 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-11-28 03:26:55,986 INFO L231 Difference]: Finished difference. Result has 60 places, 0 transitions, 0 flow [2024-11-28 03:26:55,986 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=60, PETRI_TRANSITIONS=0} [2024-11-28 03:26:55,990 INFO L279 CegarLoopForPetriNet]: 48 programPoint places, 12 predicate places. [2024-11-28 03:26:55,990 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 0 transitions, 0 flow [2024-11-28 03:26:55,991 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.5) internal successors, (123), 6 states have internal predecessors, (123), 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 03:26:55,993 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2024-11-28 03:26:55,994 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2024-11-28 03:26:55,994 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-11-28 03:26:55,995 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-11-28 03:26:56,007 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29641d5-8efc-468f-ba26-ef74b05f2d73/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-28 03:26:56,199 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29641d5-8efc-468f-ba26-ef74b05f2d73/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:26:56,200 INFO L422 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1, 1, 1, 1] [2024-11-28 03:26:56,203 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-28 03:26:56,203 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-28 03:26:56,209 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 03:26:56 BasicIcfg [2024-11-28 03:26:56,210 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-28 03:26:56,210 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-28 03:26:56,211 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-28 03:26:56,211 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-28 03:26:56,212 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:26:44" (3/4) ... [2024-11-28 03:26:56,214 INFO L146 WitnessPrinter]: Generating witness for correct program [2024-11-28 03:26:56,218 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2024-11-28 03:26:56,218 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2024-11-28 03:26:56,218 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2024-11-28 03:26:56,230 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 184 nodes and edges [2024-11-28 03:26:56,234 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 27 nodes and edges [2024-11-28 03:26:56,235 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2024-11-28 03:26:56,235 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2024-11-28 03:26:56,345 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29641d5-8efc-468f-ba26-ef74b05f2d73/bin/uautomizer-verify-aQ6SnzHsRB/witness.graphml [2024-11-28 03:26:56,345 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29641d5-8efc-468f-ba26-ef74b05f2d73/bin/uautomizer-verify-aQ6SnzHsRB/witness.yml [2024-11-28 03:26:56,345 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-28 03:26:56,346 INFO L158 Benchmark]: Toolchain (without parser) took 14334.61ms. Allocated memory was 117.4MB in the beginning and 377.5MB in the end (delta: 260.0MB). Free memory was 92.5MB in the beginning and 144.6MB in the end (delta: -52.1MB). Peak memory consumption was 207.1MB. Max. memory is 16.1GB. [2024-11-28 03:26:56,347 INFO L158 Benchmark]: CDTParser took 0.38ms. Allocated memory is still 117.4MB. Free memory was 74.6MB in the beginning and 74.4MB in the end (delta: 146.8kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 03:26:56,347 INFO L158 Benchmark]: CACSL2BoogieTranslator took 436.85ms. Allocated memory is still 117.4MB. Free memory was 92.3MB in the beginning and 79.3MB in the end (delta: 13.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-28 03:26:56,347 INFO L158 Benchmark]: Boogie Procedure Inliner took 54.65ms. Allocated memory is still 117.4MB. Free memory was 79.3MB in the beginning and 77.2MB in the end (delta: 2.1MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 03:26:56,348 INFO L158 Benchmark]: Boogie Preprocessor took 62.78ms. Allocated memory is still 117.4MB. Free memory was 77.2MB in the beginning and 74.5MB in the end (delta: 2.6MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 03:26:56,348 INFO L158 Benchmark]: RCFGBuilder took 1614.08ms. Allocated memory is still 117.4MB. Free memory was 74.5MB in the beginning and 46.5MB in the end (delta: 28.0MB). Peak memory consumption was 38.9MB. Max. memory is 16.1GB. [2024-11-28 03:26:56,349 INFO L158 Benchmark]: TraceAbstraction took 12023.61ms. Allocated memory was 117.4MB in the beginning and 377.5MB in the end (delta: 260.0MB). Free memory was 46.0MB in the beginning and 148.9MB in the end (delta: -102.9MB). Peak memory consumption was 159.8MB. Max. memory is 16.1GB. [2024-11-28 03:26:56,349 INFO L158 Benchmark]: Witness Printer took 134.94ms. Allocated memory is still 377.5MB. Free memory was 148.9MB in the beginning and 144.6MB in the end (delta: 4.2MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 03:26:56,351 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.38ms. Allocated memory is still 117.4MB. Free memory was 74.6MB in the beginning and 74.4MB in the end (delta: 146.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 436.85ms. Allocated memory is still 117.4MB. Free memory was 92.3MB in the beginning and 79.3MB in the end (delta: 13.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 54.65ms. Allocated memory is still 117.4MB. Free memory was 79.3MB in the beginning and 77.2MB in the end (delta: 2.1MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 62.78ms. Allocated memory is still 117.4MB. Free memory was 77.2MB in the beginning and 74.5MB in the end (delta: 2.6MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 1614.08ms. Allocated memory is still 117.4MB. Free memory was 74.5MB in the beginning and 46.5MB in the end (delta: 28.0MB). Peak memory consumption was 38.9MB. Max. memory is 16.1GB. * TraceAbstraction took 12023.61ms. Allocated memory was 117.4MB in the beginning and 377.5MB in the end (delta: 260.0MB). Free memory was 46.0MB in the beginning and 148.9MB in the end (delta: -102.9MB). Peak memory consumption was 159.8MB. Max. memory is 16.1GB. * Witness Printer took 134.94ms. Allocated memory is still 377.5MB. Free memory was 148.9MB in the beginning and 144.6MB in the end (delta: 4.2MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 156]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 72 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 11.8s, OverallIterations: 9, TraceHistogramMax: 2, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 7.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 139 SdHoareTripleChecker+Valid, 1.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 136 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 1.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 12 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 791 IncrementalHoareTripleChecker+Invalid, 803 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 12 mSolverCounterUnsat, 0 mSDtfsCounter, 791 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 217 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=178occurred in iteration=8, InterpolantAutomatonStates: 33, 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: 0.2s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 2.2s InterpolantComputationTime, 485 NumberOfCodeBlocks, 471 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 519 ConstructedInterpolants, 0 QuantifiedInterpolants, 1183 SizeOfPredicates, 6 NumberOfNonLiveVariables, 969 ConjunctsInSsa, 17 ConjunctsInUnsatCore, 13 InterpolantComputations, 8 PerfectInterpolantSequences, 48/53 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 03:26:56,367 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d29641d5-8efc-468f-ba26-ef74b05f2d73/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