./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread/stateful01-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 527bcce2 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_304d457d-0e2a-4b95-a3a5-861df81866b3/bin/uautomizer-verify-bycVGegfSx/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_304d457d-0e2a-4b95-a3a5-861df81866b3/bin/uautomizer-verify-bycVGegfSx/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_304d457d-0e2a-4b95-a3a5-861df81866b3/bin/uautomizer-verify-bycVGegfSx/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_304d457d-0e2a-4b95-a3a5-861df81866b3/bin/uautomizer-verify-bycVGegfSx/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread/stateful01-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_304d457d-0e2a-4b95-a3a5-861df81866b3/bin/uautomizer-verify-bycVGegfSx/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_304d457d-0e2a-4b95-a3a5-861df81866b3/bin/uautomizer-verify-bycVGegfSx --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e2334be94e5a4379173e8ce9878c152630508647bf4da61c6cf055a5b5360d8e --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 22:14:09,995 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 22:14:10,110 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_304d457d-0e2a-4b95-a3a5-861df81866b3/bin/uautomizer-verify-bycVGegfSx/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-21 22:14:10,126 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 22:14:10,127 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 22:14:10,169 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 22:14:10,170 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 22:14:10,171 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 22:14:10,171 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 22:14:10,172 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 22:14:10,173 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 22:14:10,174 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 22:14:10,174 INFO L153 SettingsManager]: * Use SBE=true [2023-11-21 22:14:10,175 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 22:14:10,175 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-21 22:14:10,176 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 22:14:10,177 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-21 22:14:10,177 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 22:14:10,177 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-21 22:14:10,178 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-21 22:14:10,178 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-21 22:14:10,179 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 22:14:10,180 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-21 22:14:10,180 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-21 22:14:10,181 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-21 22:14:10,181 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 22:14:10,182 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 22:14:10,182 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-21 22:14:10,183 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 22:14:10,183 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 22:14:10,184 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 22:14:10,184 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 22:14:10,185 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 22:14:10,185 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-21 22:14:10,185 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-21 22:14:10,186 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 22:14:10,186 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-21 22:14:10,186 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-21 22:14:10,187 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 22:14:10,187 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_304d457d-0e2a-4b95-a3a5-861df81866b3/bin/uautomizer-verify-bycVGegfSx/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_304d457d-0e2a-4b95-a3a5-861df81866b3/bin/uautomizer-verify-bycVGegfSx Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e2334be94e5a4379173e8ce9878c152630508647bf4da61c6cf055a5b5360d8e [2023-11-21 22:14:10,488 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 22:14:10,523 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 22:14:10,526 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 22:14:10,528 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 22:14:10,528 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 22:14:10,530 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_304d457d-0e2a-4b95-a3a5-861df81866b3/bin/uautomizer-verify-bycVGegfSx/../../sv-benchmarks/c/pthread/stateful01-2.i [2023-11-21 22:14:13,686 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 22:14:13,937 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 22:14:13,938 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_304d457d-0e2a-4b95-a3a5-861df81866b3/sv-benchmarks/c/pthread/stateful01-2.i [2023-11-21 22:14:13,964 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_304d457d-0e2a-4b95-a3a5-861df81866b3/bin/uautomizer-verify-bycVGegfSx/data/9b6b45ad8/ddb40f71592445f682330683675587f5/FLAG9b6c31c33 [2023-11-21 22:14:13,977 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_304d457d-0e2a-4b95-a3a5-861df81866b3/bin/uautomizer-verify-bycVGegfSx/data/9b6b45ad8/ddb40f71592445f682330683675587f5 [2023-11-21 22:14:13,982 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 22:14:13,984 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 22:14:13,986 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 22:14:13,986 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 22:14:13,992 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 22:14:13,993 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:14:13" (1/1) ... [2023-11-21 22:14:13,994 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@554e7b93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:14:13, skipping insertion in model container [2023-11-21 22:14:13,994 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:14:13" (1/1) ... [2023-11-21 22:14:14,061 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 22:14:14,517 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:14:14,536 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 22:14:14,603 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:14:14,647 INFO L206 MainTranslator]: Completed translation [2023-11-21 22:14:14,648 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:14:14 WrapperNode [2023-11-21 22:14:14,648 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 22:14:14,650 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 22:14:14,650 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 22:14:14,650 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 22:14:14,658 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:14:14" (1/1) ... [2023-11-21 22:14:14,692 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:14:14" (1/1) ... [2023-11-21 22:14:14,729 INFO L138 Inliner]: procedures = 169, calls = 39, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 65 [2023-11-21 22:14:14,730 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 22:14:14,730 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 22:14:14,731 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 22:14:14,731 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 22:14:14,741 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:14:14" (1/1) ... [2023-11-21 22:14:14,742 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:14:14" (1/1) ... [2023-11-21 22:14:14,758 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:14:14" (1/1) ... [2023-11-21 22:14:14,759 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:14:14" (1/1) ... [2023-11-21 22:14:14,765 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:14:14" (1/1) ... [2023-11-21 22:14:14,779 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:14:14" (1/1) ... [2023-11-21 22:14:14,782 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:14:14" (1/1) ... [2023-11-21 22:14:14,783 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:14:14" (1/1) ... [2023-11-21 22:14:14,797 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 22:14:14,798 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 22:14:14,799 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 22:14:14,799 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 22:14:14,800 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:14:14" (1/1) ... [2023-11-21 22:14:14,812 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 22:14:14,828 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_304d457d-0e2a-4b95-a3a5-861df81866b3/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:14:14,843 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_304d457d-0e2a-4b95-a3a5-861df81866b3/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-21 22:14:14,857 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_304d457d-0e2a-4b95-a3a5-861df81866b3/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-21 22:14:14,882 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-21 22:14:14,882 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-21 22:14:14,884 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-21 22:14:14,885 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-21 22:14:14,885 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-21 22:14:14,885 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-21 22:14:14,886 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-21 22:14:14,886 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 22:14:14,886 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-21 22:14:14,886 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-21 22:14:14,887 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-21 22:14:14,887 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-11-21 22:14:14,887 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 22:14:14,887 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 22:14:14,889 WARN L212 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-21 22:14:15,049 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 22:14:15,052 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 22:14:15,312 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 22:14:15,479 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 22:14:15,479 INFO L308 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-21 22:14:15,481 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:14:15 BoogieIcfgContainer [2023-11-21 22:14:15,481 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 22:14:15,483 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-21 22:14:15,484 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-21 22:14:15,487 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-21 22:14:15,487 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 10:14:13" (1/3) ... [2023-11-21 22:14:15,488 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7409066b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:14:15, skipping insertion in model container [2023-11-21 22:14:15,488 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:14:14" (2/3) ... [2023-11-21 22:14:15,489 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7409066b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:14:15, skipping insertion in model container [2023-11-21 22:14:15,489 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:14:15" (3/3) ... [2023-11-21 22:14:15,490 INFO L112 eAbstractionObserver]: Analyzing ICFG stateful01-2.i [2023-11-21 22:14:15,511 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-21 22:14:15,511 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2023-11-21 22:14:15,511 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-21 22:14:15,561 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-21 22:14:15,593 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 56 places, 51 transitions, 116 flow [2023-11-21 22:14:15,630 INFO L124 PetriNetUnfolderBase]: 2/49 cut-off events. [2023-11-21 22:14:15,630 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-21 22:14:15,634 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58 conditions, 49 events. 2/49 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 72 event pairs, 0 based on Foata normal form. 0/37 useless extension candidates. Maximal degree in co-relation 26. Up to 2 conditions per place. [2023-11-21 22:14:15,634 INFO L82 GeneralOperation]: Start removeDead. Operand has 56 places, 51 transitions, 116 flow [2023-11-21 22:14:15,639 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 53 places, 48 transitions, 108 flow [2023-11-21 22:14:15,651 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 22:14:15,661 INFO L357 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, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@6884619b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 22:14:15,662 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2023-11-21 22:14:15,666 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-21 22:14:15,671 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events. [2023-11-21 22:14:15,672 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-21 22:14:15,673 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:14:15,673 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-21 22:14:15,674 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-21 22:14:15,681 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:14:15,681 INFO L85 PathProgramCache]: Analyzing trace with hash 8273, now seen corresponding path program 1 times [2023-11-21 22:14:15,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:14:15,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855739830] [2023-11-21 22:14:15,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:14:15,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:14:15,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:14:16,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:14:16,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:14:16,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855739830] [2023-11-21 22:14:16,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855739830] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:14:16,147 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:14:16,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-21 22:14:16,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121693491] [2023-11-21 22:14:16,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:14:16,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:14:16,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:14:16,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:14:16,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:14:16,248 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 51 [2023-11-21 22:14:16,251 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 48 transitions, 108 flow. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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) [2023-11-21 22:14:16,251 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:14:16,251 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 51 [2023-11-21 22:14:16,252 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:14:16,502 INFO L124 PetriNetUnfolderBase]: 294/594 cut-off events. [2023-11-21 22:14:16,503 INFO L125 PetriNetUnfolderBase]: For 25/25 co-relation queries the response was YES. [2023-11-21 22:14:16,507 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1140 conditions, 594 events. 294/594 cut-off events. For 25/25 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 2573 event pairs, 294 based on Foata normal form. 2/568 useless extension candidates. Maximal degree in co-relation 1045. Up to 514 conditions per place. [2023-11-21 22:14:16,512 INFO L140 encePairwiseOnDemand]: 45/51 looper letters, 23 selfloop transitions, 2 changer transitions 0/43 dead transitions. [2023-11-21 22:14:16,513 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 43 transitions, 148 flow [2023-11-21 22:14:16,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:14:16,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 22:14:16,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 89 transitions. [2023-11-21 22:14:16,526 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5816993464052288 [2023-11-21 22:14:16,527 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 89 transitions. [2023-11-21 22:14:16,528 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 89 transitions. [2023-11-21 22:14:16,529 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:14:16,531 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 89 transitions. [2023-11-21 22:14:16,534 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:14:16,537 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 51.0) internal successors, (204), 4 states have internal predecessors, (204), 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) [2023-11-21 22:14:16,538 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 51.0) internal successors, (204), 4 states have internal predecessors, (204), 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) [2023-11-21 22:14:16,540 INFO L175 Difference]: Start difference. First operand has 53 places, 48 transitions, 108 flow. Second operand 3 states and 89 transitions. [2023-11-21 22:14:16,541 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 43 transitions, 148 flow [2023-11-21 22:14:16,545 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 43 transitions, 140 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-21 22:14:16,547 INFO L231 Difference]: Finished difference. Result has 48 places, 43 transitions, 94 flow [2023-11-21 22:14:16,549 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=94, PETRI_PLACES=48, PETRI_TRANSITIONS=43} [2023-11-21 22:14:16,553 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, -5 predicate places. [2023-11-21 22:14:16,554 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 43 transitions, 94 flow [2023-11-21 22:14:16,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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) [2023-11-21 22:14:16,554 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:14:16,554 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-21 22:14:16,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-21 22:14:16,555 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-21 22:14:16,555 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:14:16,556 INFO L85 PathProgramCache]: Analyzing trace with hash 8274, now seen corresponding path program 1 times [2023-11-21 22:14:16,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:14:16,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10256497] [2023-11-21 22:14:16,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:14:16,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:14:16,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:14:16,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:14:16,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:14:16,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10256497] [2023-11-21 22:14:16,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10256497] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:14:16,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:14:16,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-21 22:14:16,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461934645] [2023-11-21 22:14:16,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:14:16,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:14:16,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:14:16,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:14:16,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:14:16,731 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 51 [2023-11-21 22:14:16,732 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 43 transitions, 94 flow. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 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) [2023-11-21 22:14:16,732 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:14:16,732 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 51 [2023-11-21 22:14:16,733 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:14:16,860 INFO L124 PetriNetUnfolderBase]: 182/411 cut-off events. [2023-11-21 22:14:16,860 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2023-11-21 22:14:16,864 INFO L83 FinitePrefix]: Finished finitePrefix Result has 763 conditions, 411 events. 182/411 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1691 event pairs, 182 based on Foata normal form. 65/449 useless extension candidates. Maximal degree in co-relation 753. Up to 337 conditions per place. [2023-11-21 22:14:16,867 INFO L140 encePairwiseOnDemand]: 47/51 looper letters, 21 selfloop transitions, 2 changer transitions 0/41 dead transitions. [2023-11-21 22:14:16,867 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 41 transitions, 136 flow [2023-11-21 22:14:16,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:14:16,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 22:14:16,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 91 transitions. [2023-11-21 22:14:16,873 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5947712418300654 [2023-11-21 22:14:16,873 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 91 transitions. [2023-11-21 22:14:16,873 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 91 transitions. [2023-11-21 22:14:16,876 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:14:16,876 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 91 transitions. [2023-11-21 22:14:16,877 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 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) [2023-11-21 22:14:16,879 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 51.0) internal successors, (204), 4 states have internal predecessors, (204), 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) [2023-11-21 22:14:16,879 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 51.0) internal successors, (204), 4 states have internal predecessors, (204), 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) [2023-11-21 22:14:16,879 INFO L175 Difference]: Start difference. First operand has 48 places, 43 transitions, 94 flow. Second operand 3 states and 91 transitions. [2023-11-21 22:14:16,880 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 41 transitions, 136 flow [2023-11-21 22:14:16,882 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 41 transitions, 132 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-21 22:14:16,886 INFO L231 Difference]: Finished difference. Result has 46 places, 41 transitions, 90 flow [2023-11-21 22:14:16,886 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=90, PETRI_PLACES=46, PETRI_TRANSITIONS=41} [2023-11-21 22:14:16,887 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, -7 predicate places. [2023-11-21 22:14:16,888 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 41 transitions, 90 flow [2023-11-21 22:14:16,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 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) [2023-11-21 22:14:16,888 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:14:16,888 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-21 22:14:16,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-21 22:14:16,890 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-21 22:14:16,892 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:14:16,894 INFO L85 PathProgramCache]: Analyzing trace with hash 246706283, now seen corresponding path program 1 times [2023-11-21 22:14:16,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:14:16,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310346918] [2023-11-21 22:14:16,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:14:16,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:14:16,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:14:17,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:14:17,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:14:17,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310346918] [2023-11-21 22:14:17,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [310346918] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:14:17,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:14:17,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-21 22:14:17,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885487544] [2023-11-21 22:14:17,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:14:17,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:14:17,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:14:17,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:14:17,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:14:17,049 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 51 [2023-11-21 22:14:17,049 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 41 transitions, 90 flow. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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) [2023-11-21 22:14:17,050 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:14:17,050 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 51 [2023-11-21 22:14:17,050 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:14:17,150 INFO L124 PetriNetUnfolderBase]: 196/423 cut-off events. [2023-11-21 22:14:17,150 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-21 22:14:17,151 INFO L83 FinitePrefix]: Finished finitePrefix Result has 805 conditions, 423 events. 196/423 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1681 event pairs, 196 based on Foata normal form. 0/415 useless extension candidates. Maximal degree in co-relation 795. Up to 367 conditions per place. [2023-11-21 22:14:17,154 INFO L140 encePairwiseOnDemand]: 47/51 looper letters, 23 selfloop transitions, 2 changer transitions 0/39 dead transitions. [2023-11-21 22:14:17,154 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 39 transitions, 136 flow [2023-11-21 22:14:17,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:14:17,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 22:14:17,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 87 transitions. [2023-11-21 22:14:17,159 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5686274509803921 [2023-11-21 22:14:17,159 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 87 transitions. [2023-11-21 22:14:17,159 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 87 transitions. [2023-11-21 22:14:17,160 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:14:17,160 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 87 transitions. [2023-11-21 22:14:17,162 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 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) [2023-11-21 22:14:17,163 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 51.0) internal successors, (204), 4 states have internal predecessors, (204), 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) [2023-11-21 22:14:17,163 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 51.0) internal successors, (204), 4 states have internal predecessors, (204), 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) [2023-11-21 22:14:17,164 INFO L175 Difference]: Start difference. First operand has 46 places, 41 transitions, 90 flow. Second operand 3 states and 87 transitions. [2023-11-21 22:14:17,164 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 39 transitions, 136 flow [2023-11-21 22:14:17,165 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 39 transitions, 132 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-21 22:14:17,167 INFO L231 Difference]: Finished difference. Result has 44 places, 39 transitions, 86 flow [2023-11-21 22:14:17,167 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=86, PETRI_PLACES=44, PETRI_TRANSITIONS=39} [2023-11-21 22:14:17,169 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, -9 predicate places. [2023-11-21 22:14:17,169 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 39 transitions, 86 flow [2023-11-21 22:14:17,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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) [2023-11-21 22:14:17,170 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:14:17,170 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-21 22:14:17,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-21 22:14:17,170 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-21 22:14:17,172 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:14:17,172 INFO L85 PathProgramCache]: Analyzing trace with hash 246706284, now seen corresponding path program 1 times [2023-11-21 22:14:17,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:14:17,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743026128] [2023-11-21 22:14:17,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:14:17,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:14:17,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:14:17,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:14:17,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:14:17,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743026128] [2023-11-21 22:14:17,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743026128] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:14:17,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:14:17,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-21 22:14:17,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55709901] [2023-11-21 22:14:17,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:14:17,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:14:17,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:14:17,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:14:17,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:14:17,317 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 51 [2023-11-21 22:14:17,318 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 39 transitions, 86 flow. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 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) [2023-11-21 22:14:17,318 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:14:17,318 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 51 [2023-11-21 22:14:17,318 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:14:17,425 INFO L124 PetriNetUnfolderBase]: 182/391 cut-off events. [2023-11-21 22:14:17,425 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2023-11-21 22:14:17,426 INFO L83 FinitePrefix]: Finished finitePrefix Result has 743 conditions, 391 events. 182/391 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1546 event pairs, 182 based on Foata normal form. 16/400 useless extension candidates. Maximal degree in co-relation 733. Up to 337 conditions per place. [2023-11-21 22:14:17,429 INFO L140 encePairwiseOnDemand]: 47/51 looper letters, 21 selfloop transitions, 2 changer transitions 0/37 dead transitions. [2023-11-21 22:14:17,429 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 37 transitions, 128 flow [2023-11-21 22:14:17,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:14:17,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 22:14:17,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 91 transitions. [2023-11-21 22:14:17,431 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5947712418300654 [2023-11-21 22:14:17,431 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 91 transitions. [2023-11-21 22:14:17,431 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 91 transitions. [2023-11-21 22:14:17,431 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:14:17,432 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 91 transitions. [2023-11-21 22:14:17,432 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 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) [2023-11-21 22:14:17,433 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 51.0) internal successors, (204), 4 states have internal predecessors, (204), 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) [2023-11-21 22:14:17,434 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 51.0) internal successors, (204), 4 states have internal predecessors, (204), 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) [2023-11-21 22:14:17,434 INFO L175 Difference]: Start difference. First operand has 44 places, 39 transitions, 86 flow. Second operand 3 states and 91 transitions. [2023-11-21 22:14:17,434 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 37 transitions, 128 flow [2023-11-21 22:14:17,435 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 37 transitions, 124 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-21 22:14:17,436 INFO L231 Difference]: Finished difference. Result has 42 places, 37 transitions, 82 flow [2023-11-21 22:14:17,437 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=82, PETRI_PLACES=42, PETRI_TRANSITIONS=37} [2023-11-21 22:14:17,438 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, -11 predicate places. [2023-11-21 22:14:17,438 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 37 transitions, 82 flow [2023-11-21 22:14:17,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 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) [2023-11-21 22:14:17,438 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:14:17,439 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:14:17,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-21 22:14:17,439 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-21 22:14:17,440 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:14:17,440 INFO L85 PathProgramCache]: Analyzing trace with hash 1477030800, now seen corresponding path program 1 times [2023-11-21 22:14:17,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:14:17,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459299992] [2023-11-21 22:14:17,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:14:17,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:14:17,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:14:17,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:14:17,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:14:17,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459299992] [2023-11-21 22:14:17,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459299992] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:14:17,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:14:17,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 22:14:17,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850941499] [2023-11-21 22:14:17,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:14:17,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:14:17,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:14:17,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:14:17,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:14:17,611 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 51 [2023-11-21 22:14:17,611 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 37 transitions, 82 flow. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 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) [2023-11-21 22:14:17,611 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:14:17,611 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 51 [2023-11-21 22:14:17,612 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:14:17,695 INFO L124 PetriNetUnfolderBase]: 102/260 cut-off events. [2023-11-21 22:14:17,696 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-21 22:14:17,696 INFO L83 FinitePrefix]: Finished finitePrefix Result has 500 conditions, 260 events. 102/260 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 937 event pairs, 42 based on Foata normal form. 32/285 useless extension candidates. Maximal degree in co-relation 490. Up to 136 conditions per place. [2023-11-21 22:14:17,698 INFO L140 encePairwiseOnDemand]: 43/51 looper letters, 21 selfloop transitions, 8 changer transitions 0/43 dead transitions. [2023-11-21 22:14:17,698 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 43 transitions, 154 flow [2023-11-21 22:14:17,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:14:17,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 22:14:17,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 105 transitions. [2023-11-21 22:14:17,700 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6862745098039216 [2023-11-21 22:14:17,700 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 105 transitions. [2023-11-21 22:14:17,700 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 105 transitions. [2023-11-21 22:14:17,701 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:14:17,701 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 105 transitions. [2023-11-21 22:14:17,701 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 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) [2023-11-21 22:14:17,702 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 51.0) internal successors, (204), 4 states have internal predecessors, (204), 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) [2023-11-21 22:14:17,703 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 51.0) internal successors, (204), 4 states have internal predecessors, (204), 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) [2023-11-21 22:14:17,703 INFO L175 Difference]: Start difference. First operand has 42 places, 37 transitions, 82 flow. Second operand 3 states and 105 transitions. [2023-11-21 22:14:17,703 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 43 transitions, 154 flow [2023-11-21 22:14:17,704 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 43 transitions, 150 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-21 22:14:17,705 INFO L231 Difference]: Finished difference. Result has 42 places, 37 transitions, 94 flow [2023-11-21 22:14:17,705 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=94, PETRI_PLACES=42, PETRI_TRANSITIONS=37} [2023-11-21 22:14:17,706 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, -11 predicate places. [2023-11-21 22:14:17,707 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 37 transitions, 94 flow [2023-11-21 22:14:17,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 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) [2023-11-21 22:14:17,707 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:14:17,707 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:14:17,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-21 22:14:17,708 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-21 22:14:17,708 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:14:17,708 INFO L85 PathProgramCache]: Analyzing trace with hash 1891576016, now seen corresponding path program 2 times [2023-11-21 22:14:17,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:14:17,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691243288] [2023-11-21 22:14:17,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:14:17,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:14:17,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:14:17,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:14:17,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:14:17,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691243288] [2023-11-21 22:14:17,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [691243288] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:14:17,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:14:17,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 22:14:17,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821136914] [2023-11-21 22:14:17,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:14:17,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 22:14:17,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:14:17,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 22:14:17,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-21 22:14:18,049 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 51 [2023-11-21 22:14:18,050 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 37 transitions, 94 flow. Second operand has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 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) [2023-11-21 22:14:18,050 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:14:18,050 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 51 [2023-11-21 22:14:18,051 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:14:18,129 INFO L124 PetriNetUnfolderBase]: 102/267 cut-off events. [2023-11-21 22:14:18,130 INFO L125 PetriNetUnfolderBase]: For 40/40 co-relation queries the response was YES. [2023-11-21 22:14:18,130 INFO L83 FinitePrefix]: Finished finitePrefix Result has 581 conditions, 267 events. 102/267 cut-off events. For 40/40 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 974 event pairs, 102 based on Foata normal form. 1/266 useless extension candidates. Maximal degree in co-relation 115. Up to 225 conditions per place. [2023-11-21 22:14:18,132 INFO L140 encePairwiseOnDemand]: 48/51 looper letters, 21 selfloop transitions, 1 changer transitions 2/36 dead transitions. [2023-11-21 22:14:18,132 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 36 transitions, 138 flow [2023-11-21 22:14:18,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-21 22:14:18,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-21 22:14:18,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 116 transitions. [2023-11-21 22:14:18,134 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5686274509803921 [2023-11-21 22:14:18,134 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 116 transitions. [2023-11-21 22:14:18,134 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 116 transitions. [2023-11-21 22:14:18,135 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:14:18,135 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 116 transitions. [2023-11-21 22:14:18,135 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 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) [2023-11-21 22:14:18,136 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 51.0) internal successors, (255), 5 states have internal predecessors, (255), 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) [2023-11-21 22:14:18,137 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 51.0) internal successors, (255), 5 states have internal predecessors, (255), 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) [2023-11-21 22:14:18,137 INFO L175 Difference]: Start difference. First operand has 42 places, 37 transitions, 94 flow. Second operand 4 states and 116 transitions. [2023-11-21 22:14:18,137 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 36 transitions, 138 flow [2023-11-21 22:14:18,138 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 36 transitions, 130 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-21 22:14:18,139 INFO L231 Difference]: Finished difference. Result has 43 places, 34 transitions, 82 flow [2023-11-21 22:14:18,140 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=82, PETRI_PLACES=43, PETRI_TRANSITIONS=34} [2023-11-21 22:14:18,141 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, -10 predicate places. [2023-11-21 22:14:18,141 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 34 transitions, 82 flow [2023-11-21 22:14:18,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 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) [2023-11-21 22:14:18,141 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:14:18,142 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:14:18,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-21 22:14:18,142 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-21 22:14:18,142 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:14:18,143 INFO L85 PathProgramCache]: Analyzing trace with hash -1223862427, now seen corresponding path program 1 times [2023-11-21 22:14:18,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:14:18,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146572277] [2023-11-21 22:14:18,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:14:18,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:14:18,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:14:18,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:14:18,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:14:18,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146572277] [2023-11-21 22:14:18,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146572277] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:14:18,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:14:18,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-21 22:14:18,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721829446] [2023-11-21 22:14:18,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:14:18,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-21 22:14:18,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:14:18,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-21 22:14:18,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-21 22:14:18,288 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 51 [2023-11-21 22:14:18,288 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 34 transitions, 82 flow. Second operand has 5 states, 5 states have (on average 28.4) internal successors, (142), 5 states have internal predecessors, (142), 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) [2023-11-21 22:14:18,288 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:14:18,289 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 51 [2023-11-21 22:14:18,289 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:14:18,423 INFO L124 PetriNetUnfolderBase]: 141/356 cut-off events. [2023-11-21 22:14:18,423 INFO L125 PetriNetUnfolderBase]: For 42/42 co-relation queries the response was YES. [2023-11-21 22:14:18,424 INFO L83 FinitePrefix]: Finished finitePrefix Result has 733 conditions, 356 events. 141/356 cut-off events. For 42/42 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1463 event pairs, 39 based on Foata normal form. 1/356 useless extension candidates. Maximal degree in co-relation 726. Up to 135 conditions per place. [2023-11-21 22:14:18,425 INFO L140 encePairwiseOnDemand]: 47/51 looper letters, 21 selfloop transitions, 2 changer transitions 25/60 dead transitions. [2023-11-21 22:14:18,426 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 60 transitions, 244 flow [2023-11-21 22:14:18,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-21 22:14:18,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-21 22:14:18,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 169 transitions. [2023-11-21 22:14:18,427 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6627450980392157 [2023-11-21 22:14:18,428 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 169 transitions. [2023-11-21 22:14:18,428 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 169 transitions. [2023-11-21 22:14:18,428 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:14:18,428 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 169 transitions. [2023-11-21 22:14:18,429 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 33.8) internal successors, (169), 5 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) [2023-11-21 22:14:18,430 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 51.0) internal successors, (306), 6 states have internal predecessors, (306), 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) [2023-11-21 22:14:18,431 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 51.0) internal successors, (306), 6 states have internal predecessors, (306), 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) [2023-11-21 22:14:18,431 INFO L175 Difference]: Start difference. First operand has 43 places, 34 transitions, 82 flow. Second operand 5 states and 169 transitions. [2023-11-21 22:14:18,431 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 60 transitions, 244 flow [2023-11-21 22:14:18,432 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 60 transitions, 243 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-21 22:14:18,433 INFO L231 Difference]: Finished difference. Result has 45 places, 34 transitions, 91 flow [2023-11-21 22:14:18,434 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=81, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=91, PETRI_PLACES=45, PETRI_TRANSITIONS=34} [2023-11-21 22:14:18,434 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, -8 predicate places. [2023-11-21 22:14:18,435 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 34 transitions, 91 flow [2023-11-21 22:14:18,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.4) internal successors, (142), 5 states have internal predecessors, (142), 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) [2023-11-21 22:14:18,435 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:14:18,435 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:14:18,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-21 22:14:18,436 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-21 22:14:18,436 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:14:18,436 INFO L85 PathProgramCache]: Analyzing trace with hash -1642703033, now seen corresponding path program 2 times [2023-11-21 22:14:18,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:14:18,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066046158] [2023-11-21 22:14:18,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:14:18,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:14:18,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:14:18,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:14:18,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:14:18,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066046158] [2023-11-21 22:14:18,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1066046158] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:14:18,562 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:14:18,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-21 22:14:18,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313049788] [2023-11-21 22:14:18,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:14:18,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-21 22:14:18,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:14:18,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-21 22:14:18,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-21 22:14:18,569 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 51 [2023-11-21 22:14:18,569 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 34 transitions, 91 flow. Second operand has 5 states, 5 states have (on average 28.4) internal successors, (142), 5 states have internal predecessors, (142), 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) [2023-11-21 22:14:18,570 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:14:18,570 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 51 [2023-11-21 22:14:18,570 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:14:18,656 INFO L124 PetriNetUnfolderBase]: 65/176 cut-off events. [2023-11-21 22:14:18,657 INFO L125 PetriNetUnfolderBase]: For 24/24 co-relation queries the response was YES. [2023-11-21 22:14:18,657 INFO L83 FinitePrefix]: Finished finitePrefix Result has 368 conditions, 176 events. 65/176 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 493 event pairs, 12 based on Foata normal form. 1/176 useless extension candidates. Maximal degree in co-relation 362. Up to 104 conditions per place. [2023-11-21 22:14:18,658 INFO L140 encePairwiseOnDemand]: 47/51 looper letters, 0 selfloop transitions, 0 changer transitions 38/38 dead transitions. [2023-11-21 22:14:18,658 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 38 transitions, 156 flow [2023-11-21 22:14:18,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-21 22:14:18,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-21 22:14:18,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 149 transitions. [2023-11-21 22:14:18,660 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5843137254901961 [2023-11-21 22:14:18,660 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 149 transitions. [2023-11-21 22:14:18,660 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 149 transitions. [2023-11-21 22:14:18,660 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:14:18,660 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 149 transitions. [2023-11-21 22:14:18,661 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 29.8) internal successors, (149), 5 states have internal predecessors, (149), 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) [2023-11-21 22:14:18,662 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 51.0) internal successors, (306), 6 states have internal predecessors, (306), 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) [2023-11-21 22:14:18,662 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 51.0) internal successors, (306), 6 states have internal predecessors, (306), 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) [2023-11-21 22:14:18,662 INFO L175 Difference]: Start difference. First operand has 45 places, 34 transitions, 91 flow. Second operand 5 states and 149 transitions. [2023-11-21 22:14:18,663 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 38 transitions, 156 flow [2023-11-21 22:14:18,664 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 38 transitions, 152 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-21 22:14:18,664 INFO L231 Difference]: Finished difference. Result has 42 places, 0 transitions, 0 flow [2023-11-21 22:14:18,664 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=51, PETRI_DIFFERENCE_MINUEND_FLOW=79, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=42, PETRI_TRANSITIONS=0} [2023-11-21 22:14:18,665 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, -11 predicate places. [2023-11-21 22:14:18,665 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 0 transitions, 0 flow [2023-11-21 22:14:18,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.4) internal successors, (142), 5 states have internal predecessors, (142), 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) [2023-11-21 22:14:18,668 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 12 remaining) [2023-11-21 22:14:18,669 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 12 remaining) [2023-11-21 22:14:18,669 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 12 remaining) [2023-11-21 22:14:18,670 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 12 remaining) [2023-11-21 22:14:18,670 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 12 remaining) [2023-11-21 22:14:18,670 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 12 remaining) [2023-11-21 22:14:18,670 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 12 remaining) [2023-11-21 22:14:18,671 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 12 remaining) [2023-11-21 22:14:18,671 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK (3 of 12 remaining) [2023-11-21 22:14:18,671 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (2 of 12 remaining) [2023-11-21 22:14:18,671 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 12 remaining) [2023-11-21 22:14:18,672 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 12 remaining) [2023-11-21 22:14:18,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-21 22:14:18,672 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1] [2023-11-21 22:14:18,676 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-21 22:14:18,676 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-21 22:14:18,682 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.11 10:14:18 BasicIcfg [2023-11-21 22:14:18,683 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-21 22:14:18,683 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-21 22:14:18,683 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-21 22:14:18,684 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-21 22:14:18,684 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:14:15" (3/4) ... [2023-11-21 22:14:18,686 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-21 22:14:18,690 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-11-21 22:14:18,690 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-11-21 22:14:18,695 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 51 nodes and edges [2023-11-21 22:14:18,696 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2023-11-21 22:14:18,696 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-11-21 22:14:18,696 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-21 22:14:18,785 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_304d457d-0e2a-4b95-a3a5-861df81866b3/bin/uautomizer-verify-bycVGegfSx/witness.graphml [2023-11-21 22:14:18,785 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_304d457d-0e2a-4b95-a3a5-861df81866b3/bin/uautomizer-verify-bycVGegfSx/witness.yml [2023-11-21 22:14:18,785 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-21 22:14:18,786 INFO L158 Benchmark]: Toolchain (without parser) took 4802.68ms. Allocated memory was 140.5MB in the beginning and 182.5MB in the end (delta: 41.9MB). Free memory was 93.7MB in the beginning and 94.7MB in the end (delta: -1.0MB). Peak memory consumption was 42.7MB. Max. memory is 16.1GB. [2023-11-21 22:14:18,787 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 113.2MB. Free memory was 68.7MB in the beginning and 68.5MB in the end (delta: 186.0kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 22:14:18,787 INFO L158 Benchmark]: CACSL2BoogieTranslator took 662.58ms. Allocated memory is still 140.5MB. Free memory was 93.4MB in the beginning and 73.5MB in the end (delta: 19.9MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-21 22:14:18,787 INFO L158 Benchmark]: Boogie Procedure Inliner took 80.23ms. Allocated memory is still 140.5MB. Free memory was 73.2MB in the beginning and 71.2MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-21 22:14:18,788 INFO L158 Benchmark]: Boogie Preprocessor took 67.32ms. Allocated memory is still 140.5MB. Free memory was 71.2MB in the beginning and 69.7MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-21 22:14:18,788 INFO L158 Benchmark]: RCFGBuilder took 682.80ms. Allocated memory is still 140.5MB. Free memory was 69.7MB in the beginning and 85.1MB in the end (delta: -15.5MB). Peak memory consumption was 14.0MB. Max. memory is 16.1GB. [2023-11-21 22:14:18,789 INFO L158 Benchmark]: TraceAbstraction took 3199.32ms. Allocated memory was 140.5MB in the beginning and 182.5MB in the end (delta: 41.9MB). Free memory was 84.7MB in the beginning and 99.9MB in the end (delta: -15.3MB). Peak memory consumption was 26.6MB. Max. memory is 16.1GB. [2023-11-21 22:14:18,789 INFO L158 Benchmark]: Witness Printer took 102.37ms. Allocated memory is still 182.5MB. Free memory was 99.9MB in the beginning and 94.7MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-21 22:14:18,791 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 113.2MB. Free memory was 68.7MB in the beginning and 68.5MB in the end (delta: 186.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 662.58ms. Allocated memory is still 140.5MB. Free memory was 93.4MB in the beginning and 73.5MB in the end (delta: 19.9MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 80.23ms. Allocated memory is still 140.5MB. Free memory was 73.2MB in the beginning and 71.2MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 67.32ms. Allocated memory is still 140.5MB. Free memory was 71.2MB in the beginning and 69.7MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 682.80ms. Allocated memory is still 140.5MB. Free memory was 69.7MB in the beginning and 85.1MB in the end (delta: -15.5MB). Peak memory consumption was 14.0MB. Max. memory is 16.1GB. * TraceAbstraction took 3199.32ms. Allocated memory was 140.5MB in the beginning and 182.5MB in the end (delta: 41.9MB). Free memory was 84.7MB in the beginning and 99.9MB in the end (delta: -15.3MB). Peak memory consumption was 26.6MB. Max. memory is 16.1GB. * Witness Printer took 102.37ms. Allocated memory is still 182.5MB. Free memory was 99.9MB in the beginning and 94.7MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 714]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 20]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 72 locations, 12 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: 3.1s, OverallIterations: 8, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 265 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 166 mSDsluCounter, 32 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 4 mSDsCounter, 14 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 543 IncrementalHoareTripleChecker+Invalid, 557 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 14 mSolverCounterUnsat, 28 mSDtfsCounter, 543 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=108occurred in iteration=0, InterpolantAutomatonStates: 29, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 150 NumberOfCodeBlocks, 150 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 142 ConstructedInterpolants, 0 QuantifiedInterpolants, 774 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 10 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-21 22:14:18,840 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_304d457d-0e2a-4b95-a3a5-861df81866b3/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (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