./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/goblint-regression/10-synch_03-two_unique.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version e7bb482b 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_33eafa6c-037a-42f3-9183-240b64dd3faa/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33eafa6c-037a-42f3-9183-240b64dd3faa/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33eafa6c-037a-42f3-9183-240b64dd3faa/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33eafa6c-037a-42f3-9183-240b64dd3faa/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/goblint-regression/10-synch_03-two_unique.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33eafa6c-037a-42f3-9183-240b64dd3faa/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33eafa6c-037a-42f3-9183-240b64dd3faa/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --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 9672e6ae87a72de159ae3bc4275af34a3d8ca73d27f8f7f38f7b3aa006285dad --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:22:24,954 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:22:25,106 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33eafa6c-037a-42f3-9183-240b64dd3faa/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-06 22:22:25,111 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:22:25,112 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:22:25,172 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:22:25,173 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:22:25,174 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:22:25,175 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:22:25,175 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:22:25,176 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:22:25,177 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:22:25,178 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:22:25,179 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:22:25,179 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:22:25,180 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:22:25,181 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:22:25,181 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:22:25,182 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-06 22:22:25,182 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-06 22:22:25,183 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-06 22:22:25,185 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:22:25,186 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-06 22:22:25,187 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 22:22:25,187 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:22:25,188 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:22:25,188 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:22:25,189 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:22:25,189 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:22:25,190 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:22:25,191 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:22:25,191 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:22:25,192 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:22:25,201 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:22:25,201 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:22:25,202 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:22:25,202 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:22:25,203 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:22:25,203 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_33eafa6c-037a-42f3-9183-240b64dd3faa/bin/uautomizer-verify-WvqO1wxjHP/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33eafa6c-037a-42f3-9183-240b64dd3faa/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9672e6ae87a72de159ae3bc4275af34a3d8ca73d27f8f7f38f7b3aa006285dad [2023-11-06 22:22:25,580 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:22:25,609 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:22:25,616 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:22:25,617 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:22:25,618 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:22:25,620 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33eafa6c-037a-42f3-9183-240b64dd3faa/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/goblint-regression/10-synch_03-two_unique.i [2023-11-06 22:22:29,035 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:22:29,368 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:22:29,369 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33eafa6c-037a-42f3-9183-240b64dd3faa/sv-benchmarks/c/goblint-regression/10-synch_03-two_unique.i [2023-11-06 22:22:29,397 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33eafa6c-037a-42f3-9183-240b64dd3faa/bin/uautomizer-verify-WvqO1wxjHP/data/44ef11d4a/f913639ab60a4071bdf4f81020465610/FLAG597fc0299 [2023-11-06 22:22:29,433 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33eafa6c-037a-42f3-9183-240b64dd3faa/bin/uautomizer-verify-WvqO1wxjHP/data/44ef11d4a/f913639ab60a4071bdf4f81020465610 [2023-11-06 22:22:29,436 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:22:29,442 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:22:29,446 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:22:29,450 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:22:29,458 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:22:29,459 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:22:29" (1/1) ... [2023-11-06 22:22:29,461 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b8ce970 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:22:29, skipping insertion in model container [2023-11-06 22:22:29,461 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:22:29" (1/1) ... [2023-11-06 22:22:29,526 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:22:30,093 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:22:30,110 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:22:30,160 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:22:30,242 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:22:30,242 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:22:30 WrapperNode [2023-11-06 22:22:30,243 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:22:30,244 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:22:30,245 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:22:30,245 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:22:30,254 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:22:30" (1/1) ... [2023-11-06 22:22:30,288 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:22:30" (1/1) ... [2023-11-06 22:22:30,326 INFO L138 Inliner]: procedures = 260, calls = 12, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 30 [2023-11-06 22:22:30,328 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:22:30,328 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:22:30,329 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:22:30,329 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:22:30,340 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:22:30" (1/1) ... [2023-11-06 22:22:30,341 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:22:30" (1/1) ... [2023-11-06 22:22:30,356 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:22:30" (1/1) ... [2023-11-06 22:22:30,357 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:22:30" (1/1) ... [2023-11-06 22:22:30,370 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:22:30" (1/1) ... [2023-11-06 22:22:30,372 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:22:30" (1/1) ... [2023-11-06 22:22:30,374 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:22:30" (1/1) ... [2023-11-06 22:22:30,382 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:22:30" (1/1) ... [2023-11-06 22:22:30,385 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:22:30,389 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:22:30,390 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:22:30,390 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:22:30,391 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:22:30" (1/1) ... [2023-11-06 22:22:30,399 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:22:30,413 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33eafa6c-037a-42f3-9183-240b64dd3faa/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:22:30,435 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33eafa6c-037a-42f3-9183-240b64dd3faa/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:22:30,446 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33eafa6c-037a-42f3-9183-240b64dd3faa/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:22:30,487 INFO L130 BoogieDeclarations]: Found specification of procedure f1 [2023-11-06 22:22:30,487 INFO L138 BoogieDeclarations]: Found implementation of procedure f1 [2023-11-06 22:22:30,489 INFO L130 BoogieDeclarations]: Found specification of procedure f2 [2023-11-06 22:22:30,489 INFO L138 BoogieDeclarations]: Found implementation of procedure f2 [2023-11-06 22:22:30,489 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 22:22:30,489 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 22:22:30,490 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 22:22:30,490 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:22:30,490 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:22:30,492 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-06 22:22:30,709 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:22:30,711 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:22:30,925 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:22:30,932 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:22:30,933 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-06 22:22:30,935 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:22:30 BoogieIcfgContainer [2023-11-06 22:22:30,935 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:22:30,938 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:22:30,938 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:22:30,942 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:22:30,942 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:22:29" (1/3) ... [2023-11-06 22:22:30,943 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20123369 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:22:30, skipping insertion in model container [2023-11-06 22:22:30,943 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:22:30" (2/3) ... [2023-11-06 22:22:30,944 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20123369 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:22:30, skipping insertion in model container [2023-11-06 22:22:30,944 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:22:30" (3/3) ... [2023-11-06 22:22:30,948 INFO L112 eAbstractionObserver]: Analyzing ICFG 10-synch_03-two_unique.i [2023-11-06 22:22:30,972 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:22:30,973 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2023-11-06 22:22:30,974 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 22:22:31,055 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-06 22:22:31,138 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 53 places, 46 transitions, 100 flow [2023-11-06 22:22:31,178 INFO L124 PetriNetUnfolderBase]: 0/44 cut-off events. [2023-11-06 22:22:31,178 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:22:31,182 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51 conditions, 44 events. 0/44 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 26 event pairs, 0 based on Foata normal form. 0/39 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2023-11-06 22:22:31,183 INFO L82 GeneralOperation]: Start removeDead. Operand has 53 places, 46 transitions, 100 flow [2023-11-06 22:22:31,187 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 46 places, 39 transitions, 84 flow [2023-11-06 22:22:31,192 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 22:22:31,204 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 46 places, 39 transitions, 84 flow [2023-11-06 22:22:31,208 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 46 places, 39 transitions, 84 flow [2023-11-06 22:22:31,209 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 46 places, 39 transitions, 84 flow [2023-11-06 22:22:31,223 INFO L124 PetriNetUnfolderBase]: 0/39 cut-off events. [2023-11-06 22:22:31,224 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:22:31,224 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46 conditions, 39 events. 0/39 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 25 event pairs, 0 based on Foata normal form. 0/35 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2023-11-06 22:22:31,225 INFO L119 LiptonReduction]: Number of co-enabled transitions 224 [2023-11-06 22:22:33,501 INFO L134 LiptonReduction]: Checked pairs total: 156 [2023-11-06 22:22:33,502 INFO L136 LiptonReduction]: Total number of compositions: 38 [2023-11-06 22:22:33,535 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:22:33,545 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;@79347879, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:22:33,545 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-11-06 22:22:33,547 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 22:22:33,547 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-11-06 22:22:33,547 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:22:33,548 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:22:33,549 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-11-06 22:22:33,549 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2023-11-06 22:22:33,556 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:22:33,556 INFO L85 PathProgramCache]: Analyzing trace with hash 169, now seen corresponding path program 1 times [2023-11-06 22:22:33,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:22:33,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844960777] [2023-11-06 22:22:33,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:22:33,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:22:33,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:22:33,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:22:33,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:22:33,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844960777] [2023-11-06 22:22:33,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844960777] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:22:33,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:22:33,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-11-06 22:22:33,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485337873] [2023-11-06 22:22:33,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:22:33,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-06 22:22:33,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:22:33,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-06 22:22:33,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 22:22:33,750 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 84 [2023-11-06 22:22:33,752 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 18 places, 11 transitions, 28 flow. Second operand has 2 states, 2 states have (on average 44.5) internal successors, (89), 2 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) [2023-11-06 22:22:33,753 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:22:33,753 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 84 [2023-11-06 22:22:33,754 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:22:33,808 INFO L124 PetriNetUnfolderBase]: 9/26 cut-off events. [2023-11-06 22:22:33,809 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-06 22:22:33,810 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62 conditions, 26 events. 9/26 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 48 event pairs, 9 based on Foata normal form. 0/22 useless extension candidates. Maximal degree in co-relation 52. Up to 27 conditions per place. [2023-11-06 22:22:33,813 INFO L140 encePairwiseOnDemand]: 82/84 looper letters, 9 selfloop transitions, 0 changer transitions 0/9 dead transitions. [2023-11-06 22:22:33,814 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 17 places, 9 transitions, 42 flow [2023-11-06 22:22:33,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 22:22:33,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-06 22:22:33,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 99 transitions. [2023-11-06 22:22:33,831 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5892857142857143 [2023-11-06 22:22:33,832 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 99 transitions. [2023-11-06 22:22:33,833 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 99 transitions. [2023-11-06 22:22:33,835 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:22:33,838 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 99 transitions. [2023-11-06 22:22:33,842 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 49.5) internal successors, (99), 2 states have internal predecessors, (99), 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) [2023-11-06 22:22:33,852 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 84.0) internal successors, (252), 3 states have internal predecessors, (252), 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) [2023-11-06 22:22:33,853 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 84.0) internal successors, (252), 3 states have internal predecessors, (252), 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) [2023-11-06 22:22:33,856 INFO L175 Difference]: Start difference. First operand has 18 places, 11 transitions, 28 flow. Second operand 2 states and 99 transitions. [2023-11-06 22:22:33,857 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 17 places, 9 transitions, 42 flow [2023-11-06 22:22:33,860 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 15 places, 9 transitions, 40 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:22:33,861 INFO L231 Difference]: Finished difference. Result has 15 places, 9 transitions, 22 flow [2023-11-06 22:22:33,864 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=22, PETRI_DIFFERENCE_MINUEND_PLACES=14, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=9, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=22, PETRI_PLACES=15, PETRI_TRANSITIONS=9} [2023-11-06 22:22:33,868 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, -3 predicate places. [2023-11-06 22:22:33,869 INFO L495 AbstractCegarLoop]: Abstraction has has 15 places, 9 transitions, 22 flow [2023-11-06 22:22:33,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 44.5) internal successors, (89), 2 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) [2023-11-06 22:22:33,869 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:22:33,869 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-06 22:22:33,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 22:22:33,870 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2023-11-06 22:22:33,871 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:22:33,871 INFO L85 PathProgramCache]: Analyzing trace with hash 166632, now seen corresponding path program 1 times [2023-11-06 22:22:33,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:22:33,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382818872] [2023-11-06 22:22:33,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:22:33,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:22:33,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:22:34,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:22:34,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:22:34,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382818872] [2023-11-06 22:22:34,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [382818872] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:22:34,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:22:34,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:22:34,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893737842] [2023-11-06 22:22:34,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:22:34,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:22:34,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:22:34,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:22:34,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:22:34,135 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 84 [2023-11-06 22:22:34,136 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 15 places, 9 transitions, 22 flow. Second operand has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 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) [2023-11-06 22:22:34,136 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:22:34,136 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 84 [2023-11-06 22:22:34,136 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:22:34,179 INFO L124 PetriNetUnfolderBase]: 8/23 cut-off events. [2023-11-06 22:22:34,180 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:22:34,180 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55 conditions, 23 events. 8/23 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 38 event pairs, 4 based on Foata normal form. 0/21 useless extension candidates. Maximal degree in co-relation 52. Up to 15 conditions per place. [2023-11-06 22:22:34,181 INFO L140 encePairwiseOnDemand]: 81/84 looper letters, 8 selfloop transitions, 2 changer transitions 0/10 dead transitions. [2023-11-06 22:22:34,181 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 16 places, 10 transitions, 44 flow [2023-11-06 22:22:34,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:22:34,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:22:34,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 119 transitions. [2023-11-06 22:22:34,188 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4722222222222222 [2023-11-06 22:22:34,189 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 119 transitions. [2023-11-06 22:22:34,189 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 119 transitions. [2023-11-06 22:22:34,192 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:22:34,192 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 119 transitions. [2023-11-06 22:22:34,195 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 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) [2023-11-06 22:22:34,198 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 84.0) internal successors, (336), 4 states have internal predecessors, (336), 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) [2023-11-06 22:22:34,198 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 84.0) internal successors, (336), 4 states have internal predecessors, (336), 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) [2023-11-06 22:22:34,199 INFO L175 Difference]: Start difference. First operand has 15 places, 9 transitions, 22 flow. Second operand 3 states and 119 transitions. [2023-11-06 22:22:34,199 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 16 places, 10 transitions, 44 flow [2023-11-06 22:22:34,199 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 16 places, 10 transitions, 44 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 22:22:34,202 INFO L231 Difference]: Finished difference. Result has 16 places, 8 transitions, 24 flow [2023-11-06 22:22:34,202 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=20, PETRI_DIFFERENCE_MINUEND_PLACES=14, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=8, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=6, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=24, PETRI_PLACES=16, PETRI_TRANSITIONS=8} [2023-11-06 22:22:34,203 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, -2 predicate places. [2023-11-06 22:22:34,204 INFO L495 AbstractCegarLoop]: Abstraction has has 16 places, 8 transitions, 24 flow [2023-11-06 22:22:34,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 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) [2023-11-06 22:22:34,206 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:22:34,210 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-06 22:22:34,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 22:22:34,211 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2023-11-06 22:22:34,212 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:22:34,212 INFO L85 PathProgramCache]: Analyzing trace with hash 166631, now seen corresponding path program 1 times [2023-11-06 22:22:34,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:22:34,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419979581] [2023-11-06 22:22:34,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:22:34,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:22:34,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:22:34,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:22:34,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:22:34,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419979581] [2023-11-06 22:22:34,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [419979581] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:22:34,417 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:22:34,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:22:34,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499717978] [2023-11-06 22:22:34,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:22:34,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:22:34,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:22:34,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:22:34,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:22:34,455 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 84 [2023-11-06 22:22:34,455 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 16 places, 8 transitions, 24 flow. Second operand has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 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) [2023-11-06 22:22:34,457 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:22:34,457 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 84 [2023-11-06 22:22:34,457 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:22:34,488 INFO L124 PetriNetUnfolderBase]: 7/20 cut-off events. [2023-11-06 22:22:34,488 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-06 22:22:34,489 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55 conditions, 20 events. 7/20 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 27 event pairs, 3 based on Foata normal form. 0/20 useless extension candidates. Maximal degree in co-relation 51. Up to 12 conditions per place. [2023-11-06 22:22:34,490 INFO L140 encePairwiseOnDemand]: 81/84 looper letters, 7 selfloop transitions, 2 changer transitions 0/9 dead transitions. [2023-11-06 22:22:34,490 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 17 places, 9 transitions, 44 flow [2023-11-06 22:22:34,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:22:34,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:22:34,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 127 transitions. [2023-11-06 22:22:34,493 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.503968253968254 [2023-11-06 22:22:34,493 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 127 transitions. [2023-11-06 22:22:34,493 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 127 transitions. [2023-11-06 22:22:34,494 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:22:34,494 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 127 transitions. [2023-11-06 22:22:34,495 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:22:34,497 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 84.0) internal successors, (336), 4 states have internal predecessors, (336), 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) [2023-11-06 22:22:34,497 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 84.0) internal successors, (336), 4 states have internal predecessors, (336), 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) [2023-11-06 22:22:34,497 INFO L175 Difference]: Start difference. First operand has 16 places, 8 transitions, 24 flow. Second operand 3 states and 127 transitions. [2023-11-06 22:22:34,498 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 17 places, 9 transitions, 44 flow [2023-11-06 22:22:34,498 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 15 places, 9 transitions, 40 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:22:34,499 INFO L231 Difference]: Finished difference. Result has 15 places, 7 transitions, 22 flow [2023-11-06 22:22:34,499 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=18, PETRI_DIFFERENCE_MINUEND_PLACES=13, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=7, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=5, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=22, PETRI_PLACES=15, PETRI_TRANSITIONS=7} [2023-11-06 22:22:34,501 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, -3 predicate places. [2023-11-06 22:22:34,501 INFO L495 AbstractCegarLoop]: Abstraction has has 15 places, 7 transitions, 22 flow [2023-11-06 22:22:34,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 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) [2023-11-06 22:22:34,502 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:22:34,502 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-06 22:22:34,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 22:22:34,503 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 4 more)] === [2023-11-06 22:22:34,503 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:22:34,503 INFO L85 PathProgramCache]: Analyzing trace with hash 160137517, now seen corresponding path program 1 times [2023-11-06 22:22:34,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:22:34,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968048249] [2023-11-06 22:22:34,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:22:34,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:22:34,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:22:34,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:22:34,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:22:34,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968048249] [2023-11-06 22:22:34,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968048249] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:22:34,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:22:34,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:22:34,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395026931] [2023-11-06 22:22:34,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:22:34,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:22:34,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:22:34,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:22:34,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:22:34,875 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 84 [2023-11-06 22:22:34,876 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 15 places, 7 transitions, 22 flow. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 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) [2023-11-06 22:22:34,876 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:22:34,876 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 84 [2023-11-06 22:22:34,876 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:22:34,891 INFO L124 PetriNetUnfolderBase]: 3/12 cut-off events. [2023-11-06 22:22:34,891 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-06 22:22:34,892 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35 conditions, 12 events. 3/12 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 10 event pairs, 3 based on Foata normal form. 4/16 useless extension candidates. Maximal degree in co-relation 31. Up to 12 conditions per place. [2023-11-06 22:22:34,892 INFO L140 encePairwiseOnDemand]: 82/84 looper letters, 0 selfloop transitions, 0 changer transitions 6/6 dead transitions. [2023-11-06 22:22:34,892 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 16 places, 6 transitions, 30 flow [2023-11-06 22:22:34,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:22:34,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:22:34,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 118 transitions. [2023-11-06 22:22:34,896 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46825396825396826 [2023-11-06 22:22:34,897 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 118 transitions. [2023-11-06 22:22:34,897 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 118 transitions. [2023-11-06 22:22:34,897 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:22:34,897 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 118 transitions. [2023-11-06 22:22:34,898 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 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) [2023-11-06 22:22:34,901 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 84.0) internal successors, (336), 4 states have internal predecessors, (336), 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) [2023-11-06 22:22:34,901 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 84.0) internal successors, (336), 4 states have internal predecessors, (336), 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) [2023-11-06 22:22:34,902 INFO L175 Difference]: Start difference. First operand has 15 places, 7 transitions, 22 flow. Second operand 3 states and 118 transitions. [2023-11-06 22:22:34,902 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 16 places, 6 transitions, 30 flow [2023-11-06 22:22:34,902 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 15 places, 6 transitions, 29 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:22:34,903 INFO L231 Difference]: Finished difference. Result has 15 places, 0 transitions, 0 flow [2023-11-06 22:22:34,903 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=84, PETRI_DIFFERENCE_MINUEND_FLOW=17, PETRI_DIFFERENCE_MINUEND_PLACES=13, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=6, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=6, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=15, PETRI_TRANSITIONS=0} [2023-11-06 22:22:34,905 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, -3 predicate places. [2023-11-06 22:22:34,905 INFO L495 AbstractCegarLoop]: Abstraction has has 15 places, 0 transitions, 0 flow [2023-11-06 22:22:34,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 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) [2023-11-06 22:22:34,908 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 7 remaining) [2023-11-06 22:22:34,908 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 7 remaining) [2023-11-06 22:22:34,909 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 7 remaining) [2023-11-06 22:22:34,909 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 7 remaining) [2023-11-06 22:22:34,909 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK (2 of 7 remaining) [2023-11-06 22:22:34,910 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 7 remaining) [2023-11-06 22:22:34,910 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 7 remaining) [2023-11-06 22:22:34,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-06 22:22:34,911 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-11-06 22:22:34,917 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-06 22:22:34,917 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-06 22:22:34,928 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 10:22:34 BasicIcfg [2023-11-06 22:22:34,929 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-06 22:22:34,929 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-06 22:22:34,929 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-06 22:22:34,930 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-06 22:22:34,930 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:22:30" (3/4) ... [2023-11-06 22:22:34,932 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-06 22:22:34,937 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure f1 [2023-11-06 22:22:34,937 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure f2 [2023-11-06 22:22:34,942 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2023-11-06 22:22:34,942 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-11-06 22:22:34,943 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-06 22:22:35,010 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33eafa6c-037a-42f3-9183-240b64dd3faa/bin/uautomizer-verify-WvqO1wxjHP/witness.graphml.graphml [2023-11-06 22:22:35,014 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33eafa6c-037a-42f3-9183-240b64dd3faa/bin/uautomizer-verify-WvqO1wxjHP/witness.graphml.yaml [2023-11-06 22:22:35,014 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-06 22:22:35,015 INFO L158 Benchmark]: Toolchain (without parser) took 5573.03ms. Allocated memory is still 163.6MB. Free memory was 118.4MB in the beginning and 50.8MB in the end (delta: 67.7MB). Peak memory consumption was 69.5MB. Max. memory is 16.1GB. [2023-11-06 22:22:35,015 INFO L158 Benchmark]: CDTParser took 0.65ms. Allocated memory is still 109.1MB. Free memory is still 85.2MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 22:22:35,016 INFO L158 Benchmark]: CACSL2BoogieTranslator took 797.14ms. Allocated memory is still 163.6MB. Free memory was 118.4MB in the beginning and 92.4MB in the end (delta: 26.0MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2023-11-06 22:22:35,016 INFO L158 Benchmark]: Boogie Procedure Inliner took 83.43ms. Allocated memory is still 163.6MB. Free memory was 92.4MB in the beginning and 90.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 22:22:35,016 INFO L158 Benchmark]: Boogie Preprocessor took 60.12ms. Allocated memory is still 163.6MB. Free memory was 90.3MB in the beginning and 88.8MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 22:22:35,017 INFO L158 Benchmark]: RCFGBuilder took 545.54ms. Allocated memory is still 163.6MB. Free memory was 88.8MB in the beginning and 77.1MB in the end (delta: 11.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-06 22:22:35,017 INFO L158 Benchmark]: TraceAbstraction took 3990.98ms. Allocated memory is still 163.6MB. Free memory was 76.5MB in the beginning and 53.9MB in the end (delta: 22.6MB). Peak memory consumption was 25.5MB. Max. memory is 16.1GB. [2023-11-06 22:22:35,020 INFO L158 Benchmark]: Witness Printer took 84.99ms. Allocated memory is still 163.6MB. Free memory was 53.9MB in the beginning and 50.8MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 22:22:35,024 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.65ms. Allocated memory is still 109.1MB. Free memory is still 85.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 797.14ms. Allocated memory is still 163.6MB. Free memory was 118.4MB in the beginning and 92.4MB in the end (delta: 26.0MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 83.43ms. Allocated memory is still 163.6MB. Free memory was 92.4MB in the beginning and 90.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 60.12ms. Allocated memory is still 163.6MB. Free memory was 90.3MB in the beginning and 88.8MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 545.54ms. Allocated memory is still 163.6MB. Free memory was 88.8MB in the beginning and 77.1MB in the end (delta: 11.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 3990.98ms. Allocated memory is still 163.6MB. Free memory was 76.5MB in the beginning and 53.9MB in the end (delta: 22.6MB). Peak memory consumption was 25.5MB. Max. memory is 16.1GB. * Witness Printer took 84.99ms. Allocated memory is still 163.6MB. Free memory was 53.9MB in the beginning and 50.8MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.3s, 46 PlacesBefore, 18 PlacesAfterwards, 39 TransitionsBefore, 11 TransitionsAfterwards, 224 CoEnabledTransitionPairs, 5 FixpointIterations, 15 TrivialSequentialCompositions, 23 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 38 TotalNumberOfCompositions, 156 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 156, independent: 156, independent conditional: 0, independent unconditional: 156, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 108, independent: 108, independent conditional: 0, independent unconditional: 108, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 156, independent: 48, independent conditional: 0, independent unconditional: 48, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 108, unknown conditional: 0, unknown unconditional: 108] , Statistics on independence cache: Total cache size (in pairs): 1, Positive cache size: 1, Positive conditional cache size: 0, Positive unconditional cache size: 1, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - 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: 927]: 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, 59 locations, 7 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: 3.8s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.4s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 107 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 36 mSDsluCounter, 17 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 10 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 112 IncrementalHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 10 mSolverCounterUnsat, 17 mSDtfsCounter, 112 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=28occurred in iteration=0, InterpolantAutomatonStates: 11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 12 NumberOfCodeBlocks, 12 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 8 ConstructedInterpolants, 0 QuantifiedInterpolants, 84 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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 5 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-06 22:22:35,051 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_33eafa6c-037a-42f3-9183-240b64dd3faa/bin/uautomizer-verify-WvqO1wxjHP/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