./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-theta/exponential-4.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b378f52-ad46-41e9-913f-1809f3645c85/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b378f52-ad46-41e9-913f-1809f3645c85/bin/uautomizer-verify-qhAvR1uOyd/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b378f52-ad46-41e9-913f-1809f3645c85/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b378f52-ad46-41e9-913f-1809f3645c85/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-theta/exponential-4.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b378f52-ad46-41e9-913f-1809f3645c85/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b378f52-ad46-41e9-913f-1809f3645c85/bin/uautomizer-verify-qhAvR1uOyd --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 6e0717c26865b2b98bbf38ebc229049821d555def6fcecec3e56a64fb6f63f98 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 13:13:15,023 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 13:13:15,113 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b378f52-ad46-41e9-913f-1809f3645c85/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-13 13:13:15,119 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 13:13:15,119 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 13:13:15,143 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 13:13:15,144 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 13:13:15,144 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 13:13:15,148 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-13 13:13:15,148 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-13 13:13:15,148 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 13:13:15,148 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 13:13:15,149 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 13:13:15,149 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 13:13:15,149 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 13:13:15,149 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 13:13:15,149 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-13 13:13:15,149 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 13:13:15,149 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 13:13:15,150 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 13:13:15,150 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 13:13:15,150 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-13 13:13:15,150 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 13:13:15,150 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-13 13:13:15,150 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 13:13:15,150 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 13:13:15,150 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-13 13:13:15,150 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 13:13:15,150 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 13:13:15,150 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 13:13:15,151 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 13:13:15,151 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 13:13:15,151 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 13:13:15,151 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 13:13:15,151 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 13:13:15,151 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-13 13:13:15,151 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-13 13:13:15,151 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 13:13:15,151 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 13:13:15,151 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 13:13:15,151 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 13:13:15,151 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 13:13:15,152 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_5b378f52-ad46-41e9-913f-1809f3645c85/bin/uautomizer-verify-qhAvR1uOyd 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 -> 6e0717c26865b2b98bbf38ebc229049821d555def6fcecec3e56a64fb6f63f98 [2024-11-13 13:13:15,466 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 13:13:15,480 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 13:13:15,486 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 13:13:15,488 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 13:13:15,488 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 13:13:15,490 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b378f52-ad46-41e9-913f-1809f3645c85/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/pthread-theta/exponential-4.i Unable to find full path for "g++" [2024-11-13 13:13:17,580 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 13:13:18,004 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 13:13:18,008 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b378f52-ad46-41e9-913f-1809f3645c85/sv-benchmarks/c/pthread-theta/exponential-4.i [2024-11-13 13:13:18,028 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b378f52-ad46-41e9-913f-1809f3645c85/bin/uautomizer-verify-qhAvR1uOyd/data/210927338/a840ff46e7b940eea4b8bba4b4cce360/FLAG155153420 [2024-11-13 13:13:18,052 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b378f52-ad46-41e9-913f-1809f3645c85/bin/uautomizer-verify-qhAvR1uOyd/data/210927338/a840ff46e7b940eea4b8bba4b4cce360 [2024-11-13 13:13:18,054 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 13:13:18,056 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 13:13:18,058 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 13:13:18,058 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 13:13:18,063 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 13:13:18,064 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:13:18" (1/1) ... [2024-11-13 13:13:18,065 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18217186 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:13:18, skipping insertion in model container [2024-11-13 13:13:18,065 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:13:18" (1/1) ... [2024-11-13 13:13:18,104 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 13:13:18,482 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_5b378f52-ad46-41e9-913f-1809f3645c85/sv-benchmarks/c/pthread-theta/exponential-4.i[33030,33043] [2024-11-13 13:13:18,503 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 13:13:18,513 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 13:13:18,564 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_5b378f52-ad46-41e9-913f-1809f3645c85/sv-benchmarks/c/pthread-theta/exponential-4.i[33030,33043] [2024-11-13 13:13:18,570 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 13:13:18,619 INFO L204 MainTranslator]: Completed translation [2024-11-13 13:13:18,619 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:13:18 WrapperNode [2024-11-13 13:13:18,620 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 13:13:18,621 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 13:13:18,621 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 13:13:18,621 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 13:13:18,628 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:13:18" (1/1) ... [2024-11-13 13:13:18,639 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:13:18" (1/1) ... [2024-11-13 13:13:18,662 INFO L138 Inliner]: procedures = 169, calls = 10, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 59 [2024-11-13 13:13:18,662 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 13:13:18,664 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 13:13:18,664 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 13:13:18,665 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 13:13:18,673 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:13:18" (1/1) ... [2024-11-13 13:13:18,673 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:13:18" (1/1) ... [2024-11-13 13:13:18,675 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:13:18" (1/1) ... [2024-11-13 13:13:18,688 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-13 13:13:18,689 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:13:18" (1/1) ... [2024-11-13 13:13:18,689 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:13:18" (1/1) ... [2024-11-13 13:13:18,693 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:13:18" (1/1) ... [2024-11-13 13:13:18,697 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:13:18" (1/1) ... [2024-11-13 13:13:18,698 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:13:18" (1/1) ... [2024-11-13 13:13:18,699 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:13:18" (1/1) ... [2024-11-13 13:13:18,702 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 13:13:18,703 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 13:13:18,703 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 13:13:18,703 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 13:13:18,704 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:13:18" (1/1) ... [2024-11-13 13:13:18,711 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 13:13:18,726 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b378f52-ad46-41e9-913f-1809f3645c85/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:13:18,740 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b378f52-ad46-41e9-913f-1809f3645c85/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-13 13:13:18,745 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b378f52-ad46-41e9-913f-1809f3645c85/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-13 13:13:18,781 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 13:13:18,782 INFO L130 BoogieDeclarations]: Found specification of procedure f1 [2024-11-13 13:13:18,782 INFO L138 BoogieDeclarations]: Found implementation of procedure f1 [2024-11-13 13:13:18,782 INFO L130 BoogieDeclarations]: Found specification of procedure f2 [2024-11-13 13:13:18,782 INFO L138 BoogieDeclarations]: Found implementation of procedure f2 [2024-11-13 13:13:18,782 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-13 13:13:18,782 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 13:13:18,782 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 13:13:18,784 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-13 13:13:18,930 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 13:13:18,932 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 13:13:19,159 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-13 13:13:19,159 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 13:13:19,302 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 13:13:19,302 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-13 13:13:19,303 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 01:13:19 BoogieIcfgContainer [2024-11-13 13:13:19,303 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 13:13:19,306 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 13:13:19,307 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 13:13:19,312 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 13:13:19,313 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 01:13:18" (1/3) ... [2024-11-13 13:13:19,313 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15986ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 01:13:19, skipping insertion in model container [2024-11-13 13:13:19,314 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:13:18" (2/3) ... [2024-11-13 13:13:19,314 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15986ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 01:13:19, skipping insertion in model container [2024-11-13 13:13:19,314 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 01:13:19" (3/3) ... [2024-11-13 13:13:19,315 INFO L112 eAbstractionObserver]: Analyzing ICFG exponential-4.i [2024-11-13 13:13:19,335 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 13:13:19,337 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG exponential-4.i that has 3 procedures, 20 locations, 1 initial locations, 2 loop locations, and 1 error locations. [2024-11-13 13:13:19,337 INFO L492 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-13 13:13:19,402 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-13 13:13:19,448 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 26 places, 22 transitions, 52 flow [2024-11-13 13:13:19,496 INFO L124 PetriNetUnfolderBase]: 4/30 cut-off events. [2024-11-13 13:13:19,501 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-13 13:13:19,504 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37 conditions, 30 events. 4/30 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 49 event pairs, 0 based on Foata normal form. 0/22 useless extension candidates. Maximal degree in co-relation 20. Up to 4 conditions per place. [2024-11-13 13:13:19,505 INFO L82 GeneralOperation]: Start removeDead. Operand has 26 places, 22 transitions, 52 flow [2024-11-13 13:13:19,508 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 23 places, 18 transitions, 43 flow [2024-11-13 13:13:19,523 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 13:13:19,540 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;@4e6875be, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 13:13:19,540 INFO L334 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-11-13 13:13:19,550 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-13 13:13:19,551 INFO L124 PetriNetUnfolderBase]: 1/11 cut-off events. [2024-11-13 13:13:19,551 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-13 13:13:19,551 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:13:19,552 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-13 13:13:19,552 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-13 13:13:19,557 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:13:19,558 INFO L85 PathProgramCache]: Analyzing trace with hash 196641333, now seen corresponding path program 1 times [2024-11-13 13:13:19,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:13:19,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950165456] [2024-11-13 13:13:19,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:13:19,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:13:19,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:13:19,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:13:19,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:13:19,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950165456] [2024-11-13 13:13:19,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950165456] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:13:19,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:13:19,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 13:13:19,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293142005] [2024-11-13 13:13:19,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:13:19,913 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 13:13:19,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:13:19,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 13:13:19,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 13:13:19,956 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 22 [2024-11-13 13:13:19,959 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 18 transitions, 43 flow. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 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) [2024-11-13 13:13:19,959 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:13:19,960 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 22 [2024-11-13 13:13:19,960 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:13:20,065 INFO L124 PetriNetUnfolderBase]: 23/67 cut-off events. [2024-11-13 13:13:20,065 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-13 13:13:20,066 INFO L83 FinitePrefix]: Finished finitePrefix Result has 126 conditions, 67 events. 23/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 227 event pairs, 9 based on Foata normal form. 0/53 useless extension candidates. Maximal degree in co-relation 110. Up to 37 conditions per place. [2024-11-13 13:13:20,069 INFO L140 encePairwiseOnDemand]: 19/22 looper letters, 12 selfloop transitions, 2 changer transitions 0/21 dead transitions. [2024-11-13 13:13:20,069 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 21 transitions, 77 flow [2024-11-13 13:13:20,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 13:13:20,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-13 13:13:20,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 42 transitions. [2024-11-13 13:13:20,088 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6363636363636364 [2024-11-13 13:13:20,090 INFO L175 Difference]: Start difference. First operand has 23 places, 18 transitions, 43 flow. Second operand 3 states and 42 transitions. [2024-11-13 13:13:20,091 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 21 transitions, 77 flow [2024-11-13 13:13:20,096 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 21 transitions, 76 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-13 13:13:20,102 INFO L231 Difference]: Finished difference. Result has 25 places, 18 transitions, 50 flow [2024-11-13 13:13:20,105 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=50, PETRI_PLACES=25, PETRI_TRANSITIONS=18} [2024-11-13 13:13:20,111 INFO L277 CegarLoopForPetriNet]: 23 programPoint places, 2 predicate places. [2024-11-13 13:13:20,111 INFO L471 AbstractCegarLoop]: Abstraction has has 25 places, 18 transitions, 50 flow [2024-11-13 13:13:20,112 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 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) [2024-11-13 13:13:20,112 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:13:20,112 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2024-11-13 13:13:20,112 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-13 13:13:20,112 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-13 13:13:20,115 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:13:20,116 INFO L85 PathProgramCache]: Analyzing trace with hash -376660842, now seen corresponding path program 1 times [2024-11-13 13:13:20,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:13:20,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091598606] [2024-11-13 13:13:20,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:13:20,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:13:20,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 13:13:20,169 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-13 13:13:20,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 13:13:20,202 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-13 13:13:20,203 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-13 13:13:20,208 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2024-11-13 13:13:20,211 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2024-11-13 13:13:20,211 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2024-11-13 13:13:20,211 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-13 13:13:20,212 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-13 13:13:20,215 WARN L247 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-13 13:13:20,215 INFO L492 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-13 13:13:20,247 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-13 13:13:20,250 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 38 places, 30 transitions, 80 flow [2024-11-13 13:13:20,267 INFO L124 PetriNetUnfolderBase]: 6/49 cut-off events. [2024-11-13 13:13:20,267 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-13 13:13:20,267 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64 conditions, 49 events. 6/49 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 86 event pairs, 0 based on Foata normal form. 0/37 useless extension candidates. Maximal degree in co-relation 43. Up to 6 conditions per place. [2024-11-13 13:13:20,267 INFO L82 GeneralOperation]: Start removeDead. Operand has 38 places, 30 transitions, 80 flow [2024-11-13 13:13:20,268 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 35 places, 26 transitions, 70 flow [2024-11-13 13:13:20,270 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 13:13:20,270 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;@4e6875be, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 13:13:20,270 INFO L334 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-11-13 13:13:20,276 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-13 13:13:20,276 INFO L124 PetriNetUnfolderBase]: 1/11 cut-off events. [2024-11-13 13:13:20,276 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-13 13:13:20,276 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:13:20,276 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-13 13:13:20,276 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-13 13:13:20,277 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:13:20,277 INFO L85 PathProgramCache]: Analyzing trace with hash 225270483, now seen corresponding path program 1 times [2024-11-13 13:13:20,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:13:20,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568960910] [2024-11-13 13:13:20,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:13:20,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:13:20,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:13:20,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:13:20,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:13:20,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568960910] [2024-11-13 13:13:20,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568960910] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:13:20,372 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:13:20,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 13:13:20,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607100735] [2024-11-13 13:13:20,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:13:20,374 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 13:13:20,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:13:20,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 13:13:20,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 13:13:20,376 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 30 [2024-11-13 13:13:20,376 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 26 transitions, 70 flow. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 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) [2024-11-13 13:13:20,376 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:13:20,376 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 30 [2024-11-13 13:13:20,376 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:13:20,605 INFO L124 PetriNetUnfolderBase]: 211/419 cut-off events. [2024-11-13 13:13:20,609 INFO L125 PetriNetUnfolderBase]: For 28/28 co-relation queries the response was YES. [2024-11-13 13:13:20,611 INFO L83 FinitePrefix]: Finished finitePrefix Result has 800 conditions, 419 events. 211/419 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2149 event pairs, 133 based on Foata normal form. 0/345 useless extension candidates. Maximal degree in co-relation 332. Up to 321 conditions per place. [2024-11-13 13:13:20,618 INFO L140 encePairwiseOnDemand]: 27/30 looper letters, 18 selfloop transitions, 2 changer transitions 0/31 dead transitions. [2024-11-13 13:13:20,618 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 31 transitions, 120 flow [2024-11-13 13:13:20,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 13:13:20,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-13 13:13:20,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 60 transitions. [2024-11-13 13:13:20,623 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-11-13 13:13:20,623 INFO L175 Difference]: Start difference. First operand has 35 places, 26 transitions, 70 flow. Second operand 3 states and 60 transitions. [2024-11-13 13:13:20,623 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 31 transitions, 120 flow [2024-11-13 13:13:20,624 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 31 transitions, 119 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-13 13:13:20,625 INFO L231 Difference]: Finished difference. Result has 37 places, 27 transitions, 81 flow [2024-11-13 13:13:20,629 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=69, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=81, PETRI_PLACES=37, PETRI_TRANSITIONS=27} [2024-11-13 13:13:20,630 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 2 predicate places. [2024-11-13 13:13:20,630 INFO L471 AbstractCegarLoop]: Abstraction has has 37 places, 27 transitions, 81 flow [2024-11-13 13:13:20,630 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 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) [2024-11-13 13:13:20,630 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:13:20,630 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:13:20,630 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-13 13:13:20,631 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-13 13:13:20,631 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:13:20,631 INFO L85 PathProgramCache]: Analyzing trace with hash 790758046, now seen corresponding path program 1 times [2024-11-13 13:13:20,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:13:20,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437445854] [2024-11-13 13:13:20,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:13:20,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:13:20,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:13:20,787 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 13:13:20,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:13:20,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437445854] [2024-11-13 13:13:20,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1437445854] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:13:20,791 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:13:20,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 13:13:20,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479444804] [2024-11-13 13:13:20,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:13:20,792 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 13:13:20,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:13:20,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 13:13:20,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-13 13:13:20,793 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 30 [2024-11-13 13:13:20,793 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 27 transitions, 81 flow. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 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) [2024-11-13 13:13:20,793 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:13:20,793 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 30 [2024-11-13 13:13:20,793 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:13:20,972 INFO L124 PetriNetUnfolderBase]: 247/475 cut-off events. [2024-11-13 13:13:20,972 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2024-11-13 13:13:20,974 INFO L83 FinitePrefix]: Finished finitePrefix Result has 958 conditions, 475 events. 247/475 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2583 event pairs, 191 based on Foata normal form. 0/425 useless extension candidates. Maximal degree in co-relation 400. Up to 333 conditions per place. [2024-11-13 13:13:20,977 INFO L140 encePairwiseOnDemand]: 26/30 looper letters, 18 selfloop transitions, 3 changer transitions 0/32 dead transitions. [2024-11-13 13:13:20,977 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 32 transitions, 133 flow [2024-11-13 13:13:20,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 13:13:20,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-13 13:13:20,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 73 transitions. [2024-11-13 13:13:20,979 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6083333333333333 [2024-11-13 13:13:20,979 INFO L175 Difference]: Start difference. First operand has 37 places, 27 transitions, 81 flow. Second operand 4 states and 73 transitions. [2024-11-13 13:13:20,979 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 32 transitions, 133 flow [2024-11-13 13:13:20,980 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 32 transitions, 131 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-13 13:13:20,982 INFO L231 Difference]: Finished difference. Result has 40 places, 28 transitions, 93 flow [2024-11-13 13:13:20,982 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=79, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=93, PETRI_PLACES=40, PETRI_TRANSITIONS=28} [2024-11-13 13:13:20,983 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 5 predicate places. [2024-11-13 13:13:20,983 INFO L471 AbstractCegarLoop]: Abstraction has has 40 places, 28 transitions, 93 flow [2024-11-13 13:13:20,983 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 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) [2024-11-13 13:13:20,983 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:13:20,983 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:13:20,983 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-13 13:13:20,984 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-13 13:13:20,984 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:13:20,984 INFO L85 PathProgramCache]: Analyzing trace with hash -1256330490, now seen corresponding path program 1 times [2024-11-13 13:13:20,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:13:20,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782733152] [2024-11-13 13:13:20,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:13:20,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:13:21,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:13:21,133 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 13:13:21,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:13:21,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782733152] [2024-11-13 13:13:21,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1782733152] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:13:21,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [114852201] [2024-11-13 13:13:21,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:13:21,135 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:13:21,135 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b378f52-ad46-41e9-913f-1809f3645c85/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:13:21,137 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b378f52-ad46-41e9-913f-1809f3645c85/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:13:21,140 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b378f52-ad46-41e9-913f-1809f3645c85/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-13 13:13:21,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:13:21,245 INFO L255 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-13 13:13:21,247 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:13:21,362 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 13:13:21,362 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:13:21,421 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 13:13:21,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [114852201] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:13:21,421 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:13:21,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2024-11-13 13:13:21,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212213280] [2024-11-13 13:13:21,422 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:13:21,422 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-13 13:13:21,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:13:21,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-13 13:13:21,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-11-13 13:13:21,423 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 30 [2024-11-13 13:13:21,425 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 28 transitions, 93 flow. Second operand has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 states have internal predecessors, (127), 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) [2024-11-13 13:13:21,425 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:13:21,425 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 30 [2024-11-13 13:13:21,426 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:13:21,552 INFO L124 PetriNetUnfolderBase]: 119/247 cut-off events. [2024-11-13 13:13:21,553 INFO L125 PetriNetUnfolderBase]: For 60/60 co-relation queries the response was YES. [2024-11-13 13:13:21,556 INFO L83 FinitePrefix]: Finished finitePrefix Result has 520 conditions, 247 events. 119/247 cut-off events. For 60/60 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1148 event pairs, 33 based on Foata normal form. 20/261 useless extension candidates. Maximal degree in co-relation 512. Up to 96 conditions per place. [2024-11-13 13:13:21,558 INFO L140 encePairwiseOnDemand]: 27/30 looper letters, 19 selfloop transitions, 3 changer transitions 0/31 dead transitions. [2024-11-13 13:13:21,559 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 31 transitions, 131 flow [2024-11-13 13:13:21,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 13:13:21,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-13 13:13:21,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 89 transitions. [2024-11-13 13:13:21,561 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5933333333333334 [2024-11-13 13:13:21,563 INFO L175 Difference]: Start difference. First operand has 40 places, 28 transitions, 93 flow. Second operand 5 states and 89 transitions. [2024-11-13 13:13:21,563 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 31 transitions, 131 flow [2024-11-13 13:13:21,564 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 31 transitions, 130 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-13 13:13:21,565 INFO L231 Difference]: Finished difference. Result has 38 places, 22 transitions, 74 flow [2024-11-13 13:13:21,565 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=30, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=74, PETRI_PLACES=38, PETRI_TRANSITIONS=22} [2024-11-13 13:13:21,566 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 3 predicate places. [2024-11-13 13:13:21,566 INFO L471 AbstractCegarLoop]: Abstraction has has 38 places, 22 transitions, 74 flow [2024-11-13 13:13:21,566 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.875) internal successors, (127), 8 states have internal predecessors, (127), 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) [2024-11-13 13:13:21,566 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:13:21,566 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-13 13:13:21,591 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b378f52-ad46-41e9-913f-1809f3645c85/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-13 13:13:21,769 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b378f52-ad46-41e9-913f-1809f3645c85/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:13:21,769 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-13 13:13:21,770 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:13:21,770 INFO L85 PathProgramCache]: Analyzing trace with hash -376619133, now seen corresponding path program 1 times [2024-11-13 13:13:21,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:13:21,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511329470] [2024-11-13 13:13:21,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:13:21,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:13:21,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 13:13:21,792 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-13 13:13:21,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 13:13:21,819 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-13 13:13:21,821 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-13 13:13:21,822 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2024-11-13 13:13:21,822 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2024-11-13 13:13:21,822 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2024-11-13 13:13:21,822 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-13 13:13:21,822 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-11-13 13:13:21,823 WARN L247 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-13 13:13:21,823 INFO L492 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-11-13 13:13:21,865 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-13 13:13:21,870 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 50 places, 38 transitions, 112 flow [2024-11-13 13:13:21,880 INFO L124 PetriNetUnfolderBase]: 8/68 cut-off events. [2024-11-13 13:13:21,881 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2024-11-13 13:13:21,881 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93 conditions, 68 events. 8/68 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 128 event pairs, 0 based on Foata normal form. 0/52 useless extension candidates. Maximal degree in co-relation 70. Up to 8 conditions per place. [2024-11-13 13:13:21,881 INFO L82 GeneralOperation]: Start removeDead. Operand has 50 places, 38 transitions, 112 flow [2024-11-13 13:13:21,882 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 47 places, 34 transitions, 101 flow [2024-11-13 13:13:21,884 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 13:13:21,886 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;@4e6875be, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 13:13:21,886 INFO L334 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-11-13 13:13:21,889 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-13 13:13:21,890 INFO L124 PetriNetUnfolderBase]: 1/11 cut-off events. [2024-11-13 13:13:21,891 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-13 13:13:21,891 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:13:21,891 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-13 13:13:21,891 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-13 13:13:21,892 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:13:21,892 INFO L85 PathProgramCache]: Analyzing trace with hash 261534073, now seen corresponding path program 1 times [2024-11-13 13:13:21,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:13:21,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560204735] [2024-11-13 13:13:21,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:13:21,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:13:21,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:13:21,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:13:21,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:13:21,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560204735] [2024-11-13 13:13:21,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [560204735] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:13:21,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:13:21,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 13:13:21,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046006083] [2024-11-13 13:13:21,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:13:21,974 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 13:13:21,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:13:21,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 13:13:21,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 13:13:21,976 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 38 [2024-11-13 13:13:21,977 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 34 transitions, 101 flow. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 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) [2024-11-13 13:13:21,977 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:13:21,977 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 38 [2024-11-13 13:13:21,977 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:13:22,391 INFO L124 PetriNetUnfolderBase]: 1347/2211 cut-off events. [2024-11-13 13:13:22,392 INFO L125 PetriNetUnfolderBase]: For 348/348 co-relation queries the response was YES. [2024-11-13 13:13:22,399 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4306 conditions, 2211 events. 1347/2211 cut-off events. For 348/348 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 13076 event pairs, 1013 based on Foata normal form. 0/1878 useless extension candidates. Maximal degree in co-relation 1892. Up to 1841 conditions per place. [2024-11-13 13:13:22,413 INFO L140 encePairwiseOnDemand]: 35/38 looper letters, 22 selfloop transitions, 2 changer transitions 0/39 dead transitions. [2024-11-13 13:13:22,414 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 39 transitions, 159 flow [2024-11-13 13:13:22,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 13:13:22,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-13 13:13:22,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 76 transitions. [2024-11-13 13:13:22,417 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-11-13 13:13:22,417 INFO L175 Difference]: Start difference. First operand has 47 places, 34 transitions, 101 flow. Second operand 3 states and 76 transitions. [2024-11-13 13:13:22,417 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 39 transitions, 159 flow [2024-11-13 13:13:22,424 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 39 transitions, 154 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-11-13 13:13:22,425 INFO L231 Difference]: Finished difference. Result has 49 places, 35 transitions, 108 flow [2024-11-13 13:13:22,425 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=108, PETRI_PLACES=49, PETRI_TRANSITIONS=35} [2024-11-13 13:13:22,426 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 2 predicate places. [2024-11-13 13:13:22,426 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 35 transitions, 108 flow [2024-11-13 13:13:22,426 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 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) [2024-11-13 13:13:22,426 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:13:22,426 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:13:22,426 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-13 13:13:22,427 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-13 13:13:22,428 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:13:22,428 INFO L85 PathProgramCache]: Analyzing trace with hash -567179215, now seen corresponding path program 1 times [2024-11-13 13:13:22,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:13:22,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330881668] [2024-11-13 13:13:22,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:13:22,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:13:22,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:13:22,548 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 13:13:22,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:13:22,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330881668] [2024-11-13 13:13:22,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [330881668] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:13:22,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:13:22,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 13:13:22,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529762156] [2024-11-13 13:13:22,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:13:22,551 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 13:13:22,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:13:22,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 13:13:22,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-13 13:13:22,553 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 38 [2024-11-13 13:13:22,553 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 35 transitions, 108 flow. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:13:22,554 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:13:22,554 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 38 [2024-11-13 13:13:22,554 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:13:23,028 INFO L124 PetriNetUnfolderBase]: 1575/2523 cut-off events. [2024-11-13 13:13:23,028 INFO L125 PetriNetUnfolderBase]: For 262/262 co-relation queries the response was YES. [2024-11-13 13:13:23,039 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5056 conditions, 2523 events. 1575/2523 cut-off events. For 262/262 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 15218 event pairs, 1135 based on Foata normal form. 0/2314 useless extension candidates. Maximal degree in co-relation 2224. Up to 1853 conditions per place. [2024-11-13 13:13:23,056 INFO L140 encePairwiseOnDemand]: 34/38 looper letters, 24 selfloop transitions, 3 changer transitions 0/42 dead transitions. [2024-11-13 13:13:23,056 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 42 transitions, 176 flow [2024-11-13 13:13:23,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 13:13:23,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-13 13:13:23,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 95 transitions. [2024-11-13 13:13:23,060 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.625 [2024-11-13 13:13:23,062 INFO L175 Difference]: Start difference. First operand has 49 places, 35 transitions, 108 flow. Second operand 4 states and 95 transitions. [2024-11-13 13:13:23,062 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 42 transitions, 176 flow [2024-11-13 13:13:23,065 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 42 transitions, 174 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-13 13:13:23,070 INFO L231 Difference]: Finished difference. Result has 52 places, 36 transitions, 120 flow [2024-11-13 13:13:23,070 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=120, PETRI_PLACES=52, PETRI_TRANSITIONS=36} [2024-11-13 13:13:23,071 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 5 predicate places. [2024-11-13 13:13:23,071 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 36 transitions, 120 flow [2024-11-13 13:13:23,073 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:13:23,073 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:13:23,073 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:13:23,073 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-13 13:13:23,074 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-13 13:13:23,074 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:13:23,074 INFO L85 PathProgramCache]: Analyzing trace with hash -402712583, now seen corresponding path program 1 times [2024-11-13 13:13:23,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:13:23,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465970185] [2024-11-13 13:13:23,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:13:23,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:13:23,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:13:23,207 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 13:13:23,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:13:23,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465970185] [2024-11-13 13:13:23,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1465970185] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:13:23,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1487921648] [2024-11-13 13:13:23,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:13:23,211 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:13:23,211 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b378f52-ad46-41e9-913f-1809f3645c85/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:13:23,214 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b378f52-ad46-41e9-913f-1809f3645c85/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:13:23,217 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b378f52-ad46-41e9-913f-1809f3645c85/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-13 13:13:23,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:13:23,321 INFO L255 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-13 13:13:23,322 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:13:23,396 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 13:13:23,396 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:13:23,437 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 13:13:23,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1487921648] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:13:23,437 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:13:23,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2024-11-13 13:13:23,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078910711] [2024-11-13 13:13:23,438 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:13:23,438 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-13 13:13:23,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:13:23,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-13 13:13:23,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-11-13 13:13:23,440 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 38 [2024-11-13 13:13:23,440 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 36 transitions, 120 flow. Second operand has 8 states, 8 states have (on average 19.875) internal successors, (159), 8 states have internal predecessors, (159), 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) [2024-11-13 13:13:23,440 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:13:23,440 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 38 [2024-11-13 13:13:23,441 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:13:23,721 INFO L124 PetriNetUnfolderBase]: 807/1335 cut-off events. [2024-11-13 13:13:23,721 INFO L125 PetriNetUnfolderBase]: For 516/516 co-relation queries the response was YES. [2024-11-13 13:13:23,727 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2762 conditions, 1335 events. 807/1335 cut-off events. For 516/516 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 7267 event pairs, 113 based on Foata normal form. 84/1362 useless extension candidates. Maximal degree in co-relation 2752. Up to 528 conditions per place. [2024-11-13 13:13:23,737 INFO L140 encePairwiseOnDemand]: 35/38 looper letters, 31 selfloop transitions, 4 changer transitions 0/48 dead transitions. [2024-11-13 13:13:23,737 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 48 transitions, 204 flow [2024-11-13 13:13:23,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 13:13:23,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-13 13:13:23,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 140 transitions. [2024-11-13 13:13:23,739 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6140350877192983 [2024-11-13 13:13:23,740 INFO L175 Difference]: Start difference. First operand has 52 places, 36 transitions, 120 flow. Second operand 6 states and 140 transitions. [2024-11-13 13:13:23,740 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 48 transitions, 204 flow [2024-11-13 13:13:23,742 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 48 transitions, 203 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-13 13:13:23,744 INFO L231 Difference]: Finished difference. Result has 51 places, 31 transitions, 107 flow [2024-11-13 13:13:23,744 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=95, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=107, PETRI_PLACES=51, PETRI_TRANSITIONS=31} [2024-11-13 13:13:23,745 INFO L277 CegarLoopForPetriNet]: 47 programPoint places, 4 predicate places. [2024-11-13 13:13:23,745 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 31 transitions, 107 flow [2024-11-13 13:13:23,746 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.875) internal successors, (159), 8 states have internal predecessors, (159), 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) [2024-11-13 13:13:23,746 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:13:23,747 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:13:23,771 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b378f52-ad46-41e9-913f-1809f3645c85/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-13 13:13:23,947 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b378f52-ad46-41e9-913f-1809f3645c85/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:13:23,947 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-13 13:13:23,948 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:13:23,948 INFO L85 PathProgramCache]: Analyzing trace with hash 2050929800, now seen corresponding path program 1 times [2024-11-13 13:13:23,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:13:23,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672380222] [2024-11-13 13:13:23,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:13:23,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:13:23,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 13:13:23,984 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-13 13:13:23,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 13:13:24,009 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-13 13:13:24,013 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-13 13:13:24,013 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2024-11-13 13:13:24,013 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2024-11-13 13:13:24,013 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2024-11-13 13:13:24,014 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-13 13:13:24,014 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-11-13 13:13:24,014 WARN L247 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-13 13:13:24,015 INFO L492 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-11-13 13:13:24,076 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-13 13:13:24,079 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 62 places, 46 transitions, 148 flow [2024-11-13 13:13:24,111 INFO L124 PetriNetUnfolderBase]: 10/87 cut-off events. [2024-11-13 13:13:24,111 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2024-11-13 13:13:24,111 INFO L83 FinitePrefix]: Finished finitePrefix Result has 124 conditions, 87 events. 10/87 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 165 event pairs, 0 based on Foata normal form. 0/67 useless extension candidates. Maximal degree in co-relation 99. Up to 10 conditions per place. [2024-11-13 13:13:24,111 INFO L82 GeneralOperation]: Start removeDead. Operand has 62 places, 46 transitions, 148 flow [2024-11-13 13:13:24,112 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 59 places, 42 transitions, 136 flow [2024-11-13 13:13:24,114 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 13:13:24,115 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;@4e6875be, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 13:13:24,115 INFO L334 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-11-13 13:13:24,118 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-13 13:13:24,118 INFO L124 PetriNetUnfolderBase]: 1/11 cut-off events. [2024-11-13 13:13:24,118 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-13 13:13:24,118 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:13:24,119 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-11-13 13:13:24,119 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-13 13:13:24,119 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:13:24,119 INFO L85 PathProgramCache]: Analyzing trace with hash 305432103, now seen corresponding path program 1 times [2024-11-13 13:13:24,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:13:24,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484595657] [2024-11-13 13:13:24,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:13:24,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:13:24,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:13:24,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:13:24,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:13:24,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484595657] [2024-11-13 13:13:24,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1484595657] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:13:24,179 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:13:24,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 13:13:24,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83189612] [2024-11-13 13:13:24,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:13:24,179 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 13:13:24,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:13:24,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 13:13:24,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 13:13:24,180 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 46 [2024-11-13 13:13:24,181 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 42 transitions, 136 flow. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 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) [2024-11-13 13:13:24,181 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:13:24,181 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 46 [2024-11-13 13:13:24,181 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:13:25,817 INFO L124 PetriNetUnfolderBase]: 7427/10915 cut-off events. [2024-11-13 13:13:25,818 INFO L125 PetriNetUnfolderBase]: For 2844/2844 co-relation queries the response was YES. [2024-11-13 13:13:25,883 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21588 conditions, 10915 events. 7427/10915 cut-off events. For 2844/2844 co-relation queries the response was YES. Maximal size of possible extension queue 522. Compared 68764 event pairs, 6069 based on Foata normal form. 0/9566 useless extension candidates. Maximal degree in co-relation 9764. Up to 9457 conditions per place. [2024-11-13 13:13:25,977 INFO L140 encePairwiseOnDemand]: 43/46 looper letters, 26 selfloop transitions, 2 changer transitions 0/47 dead transitions. [2024-11-13 13:13:25,977 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 47 transitions, 202 flow [2024-11-13 13:13:25,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 13:13:25,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-13 13:13:25,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 92 transitions. [2024-11-13 13:13:25,978 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-11-13 13:13:25,978 INFO L175 Difference]: Start difference. First operand has 59 places, 42 transitions, 136 flow. Second operand 3 states and 92 transitions. [2024-11-13 13:13:25,978 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 47 transitions, 202 flow [2024-11-13 13:13:25,999 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 47 transitions, 189 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-11-13 13:13:26,000 INFO L231 Difference]: Finished difference. Result has 61 places, 43 transitions, 135 flow [2024-11-13 13:13:26,001 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=123, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=135, PETRI_PLACES=61, PETRI_TRANSITIONS=43} [2024-11-13 13:13:26,002 INFO L277 CegarLoopForPetriNet]: 59 programPoint places, 2 predicate places. [2024-11-13 13:13:26,004 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 43 transitions, 135 flow [2024-11-13 13:13:26,004 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 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) [2024-11-13 13:13:26,004 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:13:26,005 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:13:26,005 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-13 13:13:26,005 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-13 13:13:26,005 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:13:26,005 INFO L85 PathProgramCache]: Analyzing trace with hash -972647740, now seen corresponding path program 1 times [2024-11-13 13:13:26,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:13:26,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934574672] [2024-11-13 13:13:26,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:13:26,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:13:26,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:13:26,109 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 13:13:26,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:13:26,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934574672] [2024-11-13 13:13:26,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934574672] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:13:26,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:13:26,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 13:13:26,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369810512] [2024-11-13 13:13:26,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:13:26,111 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 13:13:26,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:13:26,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 13:13:26,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-13 13:13:26,112 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 46 [2024-11-13 13:13:26,113 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 43 transitions, 135 flow. Second operand has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 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) [2024-11-13 13:13:26,113 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:13:26,113 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 46 [2024-11-13 13:13:26,113 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:13:27,976 INFO L124 PetriNetUnfolderBase]: 8679/12507 cut-off events. [2024-11-13 13:13:27,979 INFO L125 PetriNetUnfolderBase]: For 1830/1830 co-relation queries the response was YES. [2024-11-13 13:13:28,117 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25026 conditions, 12507 events. 8679/12507 cut-off events. For 1830/1830 co-relation queries the response was YES. Maximal size of possible extension queue 621. Compared 78544 event pairs, 6351 based on Foata normal form. 0/11658 useless extension candidates. Maximal degree in co-relation 11312. Up to 9469 conditions per place. [2024-11-13 13:13:28,278 INFO L140 encePairwiseOnDemand]: 42/46 looper letters, 30 selfloop transitions, 3 changer transitions 0/52 dead transitions. [2024-11-13 13:13:28,282 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 52 transitions, 219 flow [2024-11-13 13:13:28,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 13:13:28,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-13 13:13:28,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 117 transitions. [2024-11-13 13:13:28,295 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6358695652173914 [2024-11-13 13:13:28,295 INFO L175 Difference]: Start difference. First operand has 61 places, 43 transitions, 135 flow. Second operand 4 states and 117 transitions. [2024-11-13 13:13:28,295 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 52 transitions, 219 flow [2024-11-13 13:13:28,305 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 52 transitions, 217 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-13 13:13:28,310 INFO L231 Difference]: Finished difference. Result has 64 places, 44 transitions, 147 flow [2024-11-13 13:13:28,310 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=133, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=147, PETRI_PLACES=64, PETRI_TRANSITIONS=44} [2024-11-13 13:13:28,311 INFO L277 CegarLoopForPetriNet]: 59 programPoint places, 5 predicate places. [2024-11-13 13:13:28,311 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 44 transitions, 147 flow [2024-11-13 13:13:28,311 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 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) [2024-11-13 13:13:28,311 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:13:28,312 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:13:28,312 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-13 13:13:28,312 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-13 13:13:28,312 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:13:28,313 INFO L85 PathProgramCache]: Analyzing trace with hash -87334924, now seen corresponding path program 1 times [2024-11-13 13:13:28,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:13:28,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046703151] [2024-11-13 13:13:28,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:13:28,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:13:28,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:13:28,452 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 13:13:28,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:13:28,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046703151] [2024-11-13 13:13:28,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1046703151] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:13:28,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2041287638] [2024-11-13 13:13:28,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:13:28,452 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:13:28,453 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b378f52-ad46-41e9-913f-1809f3645c85/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:13:28,460 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b378f52-ad46-41e9-913f-1809f3645c85/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:13:28,472 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b378f52-ad46-41e9-913f-1809f3645c85/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-13 13:13:28,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:13:28,604 INFO L255 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-13 13:13:28,605 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:13:28,684 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 13:13:28,685 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:13:28,738 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 13:13:28,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2041287638] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:13:28,738 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:13:28,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2024-11-13 13:13:28,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809030518] [2024-11-13 13:13:28,739 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:13:28,740 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-13 13:13:28,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:13:28,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-13 13:13:28,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-11-13 13:13:28,743 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 46 [2024-11-13 13:13:28,744 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 44 transitions, 147 flow. Second operand has 8 states, 8 states have (on average 23.875) internal successors, (191), 8 states have internal predecessors, (191), 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) [2024-11-13 13:13:28,744 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:13:28,744 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 46 [2024-11-13 13:13:28,744 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:13:30,330 INFO L124 PetriNetUnfolderBase]: 7911/11319 cut-off events. [2024-11-13 13:13:30,331 INFO L125 PetriNetUnfolderBase]: For 2850/2850 co-relation queries the response was YES. [2024-11-13 13:13:30,383 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24012 conditions, 11319 events. 7911/11319 cut-off events. For 2850/2850 co-relation queries the response was YES. Maximal size of possible extension queue 555. Compared 67543 event pairs, 839 based on Foata normal form. 84/11022 useless extension candidates. Maximal degree in co-relation 13760. Up to 5377 conditions per place. [2024-11-13 13:13:30,437 INFO L140 encePairwiseOnDemand]: 42/46 looper letters, 48 selfloop transitions, 6 changer transitions 0/73 dead transitions. [2024-11-13 13:13:30,437 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 73 transitions, 317 flow [2024-11-13 13:13:30,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 13:13:30,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-13 13:13:30,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 182 transitions. [2024-11-13 13:13:30,439 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6594202898550725 [2024-11-13 13:13:30,439 INFO L175 Difference]: Start difference. First operand has 64 places, 44 transitions, 147 flow. Second operand 6 states and 182 transitions. [2024-11-13 13:13:30,439 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 73 transitions, 317 flow [2024-11-13 13:13:30,478 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 73 transitions, 311 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-11-13 13:13:30,479 INFO L231 Difference]: Finished difference. Result has 71 places, 47 transitions, 181 flow [2024-11-13 13:13:30,480 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=141, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=181, PETRI_PLACES=71, PETRI_TRANSITIONS=47} [2024-11-13 13:13:30,480 INFO L277 CegarLoopForPetriNet]: 59 programPoint places, 12 predicate places. [2024-11-13 13:13:30,480 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 47 transitions, 181 flow [2024-11-13 13:13:30,480 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 23.875) internal successors, (191), 8 states have internal predecessors, (191), 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) [2024-11-13 13:13:30,480 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:13:30,481 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:13:30,503 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b378f52-ad46-41e9-913f-1809f3645c85/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-13 13:13:30,681 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b378f52-ad46-41e9-913f-1809f3645c85/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-13 13:13:30,682 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-13 13:13:30,682 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:13:30,682 INFO L85 PathProgramCache]: Analyzing trace with hash 195774403, now seen corresponding path program 1 times [2024-11-13 13:13:30,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:13:30,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239852648] [2024-11-13 13:13:30,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:13:30,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:13:30,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:13:31,020 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 22 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:13:31,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:13:31,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239852648] [2024-11-13 13:13:31,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239852648] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:13:31,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1640300346] [2024-11-13 13:13:31,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:13:31,021 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:13:31,021 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b378f52-ad46-41e9-913f-1809f3645c85/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:13:31,026 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b378f52-ad46-41e9-913f-1809f3645c85/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:13:31,028 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b378f52-ad46-41e9-913f-1809f3645c85/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-13 13:13:31,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:13:31,159 INFO L255 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-13 13:13:31,161 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:13:31,396 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:13:31,397 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 13:13:31,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1640300346] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:13:31,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 13:13:31,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 11 [2024-11-13 13:13:31,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232027621] [2024-11-13 13:13:31,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:13:31,399 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-13 13:13:31,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:13:31,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-13 13:13:31,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2024-11-13 13:13:31,401 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 46 [2024-11-13 13:13:31,401 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 47 transitions, 181 flow. Second operand has 7 states, 7 states have (on average 24.142857142857142) internal successors, (169), 7 states have internal predecessors, (169), 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) [2024-11-13 13:13:31,401 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:13:31,401 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 46 [2024-11-13 13:13:31,401 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:13:32,319 INFO L124 PetriNetUnfolderBase]: 6887/9783 cut-off events. [2024-11-13 13:13:32,320 INFO L125 PetriNetUnfolderBase]: For 4344/4344 co-relation queries the response was YES. [2024-11-13 13:13:32,347 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22217 conditions, 9783 events. 6887/9783 cut-off events. For 4344/4344 co-relation queries the response was YES. Maximal size of possible extension queue 460. Compared 55999 event pairs, 657 based on Foata normal form. 256/9690 useless extension candidates. Maximal degree in co-relation 11706. Up to 5376 conditions per place. [2024-11-13 13:13:32,375 INFO L140 encePairwiseOnDemand]: 43/46 looper letters, 48 selfloop transitions, 5 changer transitions 0/71 dead transitions. [2024-11-13 13:13:32,375 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 71 transitions, 333 flow [2024-11-13 13:13:32,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-13 13:13:32,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-13 13:13:32,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 200 transitions. [2024-11-13 13:13:32,377 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6211180124223602 [2024-11-13 13:13:32,377 INFO L175 Difference]: Start difference. First operand has 71 places, 47 transitions, 181 flow. Second operand 7 states and 200 transitions. [2024-11-13 13:13:32,377 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 71 transitions, 333 flow [2024-11-13 13:13:32,393 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 71 transitions, 322 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-11-13 13:13:32,394 INFO L231 Difference]: Finished difference. Result has 73 places, 45 transitions, 168 flow [2024-11-13 13:13:32,395 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=168, PETRI_PLACES=73, PETRI_TRANSITIONS=45} [2024-11-13 13:13:32,395 INFO L277 CegarLoopForPetriNet]: 59 programPoint places, 14 predicate places. [2024-11-13 13:13:32,395 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 45 transitions, 168 flow [2024-11-13 13:13:32,396 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.142857142857142) internal successors, (169), 7 states have internal predecessors, (169), 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) [2024-11-13 13:13:32,396 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:13:32,396 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:13:32,415 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b378f52-ad46-41e9-913f-1809f3645c85/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-13 13:13:32,596 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b378f52-ad46-41e9-913f-1809f3645c85/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-13 13:13:32,596 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-13 13:13:32,597 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:13:32,597 INFO L85 PathProgramCache]: Analyzing trace with hash -250482379, now seen corresponding path program 1 times [2024-11-13 13:13:32,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:13:32,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021737949] [2024-11-13 13:13:32,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:13:32,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:13:32,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:13:32,712 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-13 13:13:32,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:13:32,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021737949] [2024-11-13 13:13:32,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021737949] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:13:32,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2061923600] [2024-11-13 13:13:32,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:13:32,713 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:13:32,713 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b378f52-ad46-41e9-913f-1809f3645c85/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:13:32,715 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b378f52-ad46-41e9-913f-1809f3645c85/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:13:32,725 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b378f52-ad46-41e9-913f-1809f3645c85/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-13 13:13:32,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:13:32,853 INFO L255 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-13 13:13:32,855 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:13:32,943 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-13 13:13:32,943 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:13:33,025 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-13 13:13:33,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2061923600] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:13:33,025 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:13:33,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2024-11-13 13:13:33,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079915611] [2024-11-13 13:13:33,026 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:13:33,026 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-13 13:13:33,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:13:33,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-13 13:13:33,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2024-11-13 13:13:33,027 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 46 [2024-11-13 13:13:33,028 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 45 transitions, 168 flow. Second operand has 10 states, 10 states have (on average 24.3) internal successors, (243), 10 states have internal predecessors, (243), 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) [2024-11-13 13:13:33,028 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:13:33,028 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 46 [2024-11-13 13:13:33,028 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:13:34,588 INFO L124 PetriNetUnfolderBase]: 9959/13623 cut-off events. [2024-11-13 13:13:34,588 INFO L125 PetriNetUnfolderBase]: For 3126/3126 co-relation queries the response was YES. [2024-11-13 13:13:34,636 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30412 conditions, 13623 events. 9959/13623 cut-off events. For 3126/3126 co-relation queries the response was YES. Maximal size of possible extension queue 594. Compared 77422 event pairs, 5607 based on Foata normal form. 0/12986 useless extension candidates. Maximal degree in co-relation 13872. Up to 7481 conditions per place. [2024-11-13 13:13:34,689 INFO L140 encePairwiseOnDemand]: 42/46 looper letters, 56 selfloop transitions, 6 changer transitions 0/80 dead transitions. [2024-11-13 13:13:34,690 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 80 transitions, 368 flow [2024-11-13 13:13:34,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-13 13:13:34,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-13 13:13:34,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 209 transitions. [2024-11-13 13:13:34,692 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6490683229813664 [2024-11-13 13:13:34,692 INFO L175 Difference]: Start difference. First operand has 73 places, 45 transitions, 168 flow. Second operand 7 states and 209 transitions. [2024-11-13 13:13:34,692 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 80 transitions, 368 flow [2024-11-13 13:13:34,724 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 80 transitions, 359 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-13 13:13:34,726 INFO L231 Difference]: Finished difference. Result has 77 places, 48 transitions, 197 flow [2024-11-13 13:13:34,726 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=159, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=197, PETRI_PLACES=77, PETRI_TRANSITIONS=48} [2024-11-13 13:13:34,726 INFO L277 CegarLoopForPetriNet]: 59 programPoint places, 18 predicate places. [2024-11-13 13:13:34,727 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 48 transitions, 197 flow [2024-11-13 13:13:34,727 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 24.3) internal successors, (243), 10 states have internal predecessors, (243), 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) [2024-11-13 13:13:34,727 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:13:34,727 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:13:34,749 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b378f52-ad46-41e9-913f-1809f3645c85/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-13 13:13:34,928 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b378f52-ad46-41e9-913f-1809f3645c85/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-13 13:13:34,928 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-13 13:13:34,928 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:13:34,928 INFO L85 PathProgramCache]: Analyzing trace with hash -1788233245, now seen corresponding path program 2 times [2024-11-13 13:13:34,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:13:34,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700781810] [2024-11-13 13:13:34,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:13:34,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:13:34,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-13 13:13:34,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2105317003] [2024-11-13 13:13:34,986 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 13:13:34,986 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:13:34,986 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b378f52-ad46-41e9-913f-1809f3645c85/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:13:34,988 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b378f52-ad46-41e9-913f-1809f3645c85/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:13:34,990 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b378f52-ad46-41e9-913f-1809f3645c85/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-13 13:13:35,081 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-13 13:13:35,082 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 13:13:35,082 INFO L255 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-13 13:13:35,084 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:13:35,149 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-11-13 13:13:35,149 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 13:13:35,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:13:35,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700781810] [2024-11-13 13:13:35,150 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-13 13:13:35,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2105317003] [2024-11-13 13:13:35,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2105317003] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:13:35,150 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:13:35,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 13:13:35,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126355497] [2024-11-13 13:13:35,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:13:35,151 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 13:13:35,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:13:35,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 13:13:35,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 13:13:35,178 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 46 [2024-11-13 13:13:35,179 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 48 transitions, 197 flow. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:13:35,179 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:13:35,179 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 46 [2024-11-13 13:13:35,179 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:13:43,188 INFO L124 PetriNetUnfolderBase]: 67668/84251 cut-off events. [2024-11-13 13:13:43,188 INFO L125 PetriNetUnfolderBase]: For 72958/72958 co-relation queries the response was YES. [2024-11-13 13:13:43,529 INFO L83 FinitePrefix]: Finished finitePrefix Result has 202180 conditions, 84251 events. 67668/84251 cut-off events. For 72958/72958 co-relation queries the response was YES. Maximal size of possible extension queue 3301. Compared 476706 event pairs, 20934 based on Foata normal form. 1296/85477 useless extension candidates. Maximal degree in co-relation 112307. Up to 76367 conditions per place. [2024-11-13 13:13:43,935 INFO L140 encePairwiseOnDemand]: 39/46 looper letters, 57 selfloop transitions, 5 changer transitions 21/96 dead transitions. [2024-11-13 13:13:43,936 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 96 transitions, 552 flow [2024-11-13 13:13:43,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 13:13:43,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-13 13:13:43,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 151 transitions. [2024-11-13 13:13:43,937 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6565217391304348 [2024-11-13 13:13:43,937 INFO L175 Difference]: Start difference. First operand has 77 places, 48 transitions, 197 flow. Second operand 5 states and 151 transitions. [2024-11-13 13:13:43,937 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 96 transitions, 552 flow [2024-11-13 13:13:43,982 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 96 transitions, 523 flow, removed 12 selfloop flow, removed 2 redundant places. [2024-11-13 13:13:43,983 INFO L231 Difference]: Finished difference. Result has 82 places, 52 transitions, 227 flow [2024-11-13 13:13:43,983 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=227, PETRI_PLACES=82, PETRI_TRANSITIONS=52} [2024-11-13 13:13:43,983 INFO L277 CegarLoopForPetriNet]: 59 programPoint places, 23 predicate places. [2024-11-13 13:13:43,983 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 52 transitions, 227 flow [2024-11-13 13:13:43,984 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:13:43,984 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:13:43,984 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:13:44,003 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b378f52-ad46-41e9-913f-1809f3645c85/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-13 13:13:44,184 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b378f52-ad46-41e9-913f-1809f3645c85/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-13 13:13:44,184 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-11-13 13:13:44,185 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:13:44,185 INFO L85 PathProgramCache]: Analyzing trace with hash -490781054, now seen corresponding path program 1 times [2024-11-13 13:13:44,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:13:44,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894341673] [2024-11-13 13:13:44,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:13:44,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:13:44,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-13 13:13:44,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1774289568] [2024-11-13 13:13:44,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:13:44,235 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:13:44,235 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b378f52-ad46-41e9-913f-1809f3645c85/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:13:44,241 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b378f52-ad46-41e9-913f-1809f3645c85/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:13:44,244 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b378f52-ad46-41e9-913f-1809f3645c85/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-13 13:13:44,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:13:44,367 INFO L255 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-13 13:13:44,369 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:13:44,468 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-13 13:13:44,469 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:13:44,569 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-11-13 13:13:44,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:13:44,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894341673] [2024-11-13 13:13:44,569 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-13 13:13:44,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1774289568] [2024-11-13 13:13:44,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1774289568] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-13 13:13:44,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 13:13:44,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2024-11-13 13:13:44,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612745269] [2024-11-13 13:13:44,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:13:44,569 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 13:13:44,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:13:44,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 13:13:44,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-13 13:13:44,576 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 46 [2024-11-13 13:13:44,576 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 52 transitions, 227 flow. Second operand has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:13:44,576 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:13:44,576 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 46 [2024-11-13 13:13:44,577 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:13:48,131 INFO L124 PetriNetUnfolderBase]: 27419/35645 cut-off events. [2024-11-13 13:13:48,131 INFO L125 PetriNetUnfolderBase]: For 32308/34656 co-relation queries the response was YES. [2024-11-13 13:13:48,339 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91015 conditions, 35645 events. 27419/35645 cut-off events. For 32308/34656 co-relation queries the response was YES. Maximal size of possible extension queue 2197. Compared 222836 event pairs, 10017 based on Foata normal form. 1488/32510 useless extension candidates. Maximal degree in co-relation 90995. Up to 17952 conditions per place. [2024-11-13 13:13:48,366 INFO L140 encePairwiseOnDemand]: 43/46 looper letters, 0 selfloop transitions, 0 changer transitions 66/66 dead transitions. [2024-11-13 13:13:48,366 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 66 transitions, 343 flow [2024-11-13 13:13:48,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 13:13:48,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-13 13:13:48,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 120 transitions. [2024-11-13 13:13:48,368 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6521739130434783 [2024-11-13 13:13:48,368 INFO L175 Difference]: Start difference. First operand has 82 places, 52 transitions, 227 flow. Second operand 4 states and 120 transitions. [2024-11-13 13:13:48,368 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 66 transitions, 343 flow [2024-11-13 13:13:48,980 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 66 transitions, 330 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-11-13 13:13:48,980 INFO L231 Difference]: Finished difference. Result has 79 places, 0 transitions, 0 flow [2024-11-13 13:13:48,980 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=79, PETRI_TRANSITIONS=0} [2024-11-13 13:13:48,981 INFO L277 CegarLoopForPetriNet]: 59 programPoint places, 20 predicate places. [2024-11-13 13:13:48,981 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 0 transitions, 0 flow [2024-11-13 13:13:48,981 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:13:48,981 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2024-11-13 13:13:48,981 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2024-11-13 13:13:48,981 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2024-11-13 13:13:48,999 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b378f52-ad46-41e9-913f-1809f3645c85/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-13 13:13:49,182 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b378f52-ad46-41e9-913f-1809f3645c85/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-13 13:13:49,182 INFO L407 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1] [2024-11-13 13:13:49,183 INFO L242 ceAbstractionStarter]: Analysis of concurrent program completed with 4 thread instances [2024-11-13 13:13:49,183 INFO L173 ceAbstractionStarter]: Computing trace abstraction results [2024-11-13 13:13:49,191 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.11 01:13:49 BasicIcfg [2024-11-13 13:13:49,191 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-13 13:13:49,192 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-13 13:13:49,192 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-13 13:13:49,192 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-13 13:13:49,193 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 01:13:19" (3/4) ... [2024-11-13 13:13:49,195 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-13 13:13:49,198 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure f1 [2024-11-13 13:13:49,198 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure f2 [2024-11-13 13:13:49,202 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 46 nodes and edges [2024-11-13 13:13:49,202 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2024-11-13 13:13:49,203 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2024-11-13 13:13:49,203 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2024-11-13 13:13:49,282 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b378f52-ad46-41e9-913f-1809f3645c85/bin/uautomizer-verify-qhAvR1uOyd/witness.graphml [2024-11-13 13:13:49,283 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b378f52-ad46-41e9-913f-1809f3645c85/bin/uautomizer-verify-qhAvR1uOyd/witness.yml [2024-11-13 13:13:49,283 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-13 13:13:49,284 INFO L158 Benchmark]: Toolchain (without parser) took 31227.74ms. Allocated memory was 117.4MB in the beginning and 9.8GB in the end (delta: 9.7GB). Free memory was 90.7MB in the beginning and 8.0GB in the end (delta: -7.9GB). Peak memory consumption was 1.7GB. Max. memory is 16.1GB. [2024-11-13 13:13:49,284 INFO L158 Benchmark]: CDTParser took 1.26ms. Allocated memory is still 83.9MB. Free memory is still 41.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 13:13:49,284 INFO L158 Benchmark]: CACSL2BoogieTranslator took 562.50ms. Allocated memory is still 117.4MB. Free memory was 90.7MB in the beginning and 70.6MB in the end (delta: 20.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-13 13:13:49,284 INFO L158 Benchmark]: Boogie Procedure Inliner took 42.27ms. Allocated memory is still 117.4MB. Free memory was 70.6MB in the beginning and 68.9MB in the end (delta: 1.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-13 13:13:49,285 INFO L158 Benchmark]: Boogie Preprocessor took 38.27ms. Allocated memory is still 117.4MB. Free memory was 68.9MB in the beginning and 67.3MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 13:13:49,285 INFO L158 Benchmark]: RCFGBuilder took 600.43ms. Allocated memory is still 117.4MB. Free memory was 67.3MB in the beginning and 48.1MB in the end (delta: 19.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-13 13:13:49,285 INFO L158 Benchmark]: TraceAbstraction took 29884.94ms. Allocated memory was 117.4MB in the beginning and 9.8GB in the end (delta: 9.7GB). Free memory was 47.7MB in the beginning and 8.0GB in the end (delta: -8.0GB). Peak memory consumption was 1.8GB. Max. memory is 16.1GB. [2024-11-13 13:13:49,285 INFO L158 Benchmark]: Witness Printer took 90.85ms. Allocated memory is still 9.8GB. Free memory was 8.0GB in the beginning and 8.0GB in the end (delta: 2.1MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 13:13:49,287 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.26ms. Allocated memory is still 83.9MB. Free memory is still 41.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 562.50ms. Allocated memory is still 117.4MB. Free memory was 90.7MB in the beginning and 70.6MB in the end (delta: 20.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 42.27ms. Allocated memory is still 117.4MB. Free memory was 70.6MB in the beginning and 68.9MB in the end (delta: 1.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 38.27ms. Allocated memory is still 117.4MB. Free memory was 68.9MB in the beginning and 67.3MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 600.43ms. Allocated memory is still 117.4MB. Free memory was 67.3MB in the beginning and 48.1MB in the end (delta: 19.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 29884.94ms. Allocated memory was 117.4MB in the beginning and 9.8GB in the end (delta: 9.7GB). Free memory was 47.7MB in the beginning and 8.0GB in the end (delta: -8.0GB). Peak memory consumption was 1.8GB. Max. memory is 16.1GB. * Witness Printer took 90.85ms. Allocated memory is still 9.8GB. Free memory was 8.0GB in the beginning and 8.0GB in the end (delta: 2.1MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 753]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 30 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 0.8s, OverallIterations: 2, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 6 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 6 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 19 IncrementalHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 0 mSDtfsCounter, 19 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=50occurred in iteration=1, InterpolantAutomatonStates: 3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 13 NumberOfCodeBlocks, 13 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 4 ConstructedInterpolants, 0 QuantifiedInterpolants, 10 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data with 2 thread instances CFG has 7 procedures, 38 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 1.6s, OverallIterations: 4, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 45 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 45 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 95 IncrementalHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 0 mSDtfsCounter, 95 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=93occurred in iteration=2, InterpolantAutomatonStates: 12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 50 NumberOfCodeBlocks, 50 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 43 ConstructedInterpolants, 0 QuantifiedInterpolants, 159 SizeOfPredicates, 2 NumberOfNonLiveVariables, 74 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 5 InterpolantComputations, 2 PerfectInterpolantSequences, 4/7 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 - StatisticsResult: Ultimate Automizer benchmark data with 3 thread instances CFG has 9 procedures, 46 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 2.1s, OverallIterations: 4, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 68 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 68 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 124 IncrementalHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 0 mSDtfsCounter, 124 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=120occurred in iteration=2, InterpolantAutomatonStates: 13, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 55 NumberOfCodeBlocks, 55 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 43 ConstructedInterpolants, 0 QuantifiedInterpolants, 159 SizeOfPredicates, 2 NumberOfNonLiveVariables, 74 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 5 InterpolantComputations, 2 PerfectInterpolantSequences, 4/7 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 - StatisticsResult: Ultimate Automizer benchmark data with 4 thread instances CFG has 11 procedures, 54 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 25.1s, OverallIterations: 7, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 21.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 244 SdHoareTripleChecker+Valid, 1.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 232 mSDsluCounter, 2 SdHoareTripleChecker+Invalid, 0.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1 mSDsCounter, 7 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 644 IncrementalHoareTripleChecker+Invalid, 651 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 7 mSolverCounterUnsat, 1 mSDtfsCounter, 644 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 202 GetRequests, 163 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=227occurred in iteration=6, InterpolantAutomatonStates: 36, 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: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 255 NumberOfCodeBlocks, 231 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 250 ConstructedInterpolants, 0 QuantifiedInterpolants, 896 SizeOfPredicates, 13 NumberOfNonLiveVariables, 624 ConjunctsInSsa, 36 ConjunctsInUnsatCore, 13 InterpolantComputations, 5 PerfectInterpolantSequences, 294/320 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-11-13 13:13:49,307 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5b378f52-ad46-41e9-913f-1809f3645c85/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE