./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/goblint-regression/13-privatized_37-traces-ex-4_true.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 527bcce2 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10e78b6c-a2aa-497d-84de-cb55aad1b72c/bin/uautomizer-verify-bycVGegfSx/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10e78b6c-a2aa-497d-84de-cb55aad1b72c/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_10e78b6c-a2aa-497d-84de-cb55aad1b72c/bin/uautomizer-verify-bycVGegfSx/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10e78b6c-a2aa-497d-84de-cb55aad1b72c/bin/uautomizer-verify-bycVGegfSx/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/goblint-regression/13-privatized_37-traces-ex-4_true.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10e78b6c-a2aa-497d-84de-cb55aad1b72c/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_10e78b6c-a2aa-497d-84de-cb55aad1b72c/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 5fb05d1d9f477ac46601c94c33a401c10a8ea916dae173fdeb0112a4de2b3b31 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 21:01:07,756 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 21:01:07,829 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10e78b6c-a2aa-497d-84de-cb55aad1b72c/bin/uautomizer-verify-bycVGegfSx/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-21 21:01:07,835 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 21:01:07,836 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 21:01:07,875 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 21:01:07,876 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 21:01:07,876 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 21:01:07,877 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 21:01:07,878 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 21:01:07,879 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 21:01:07,880 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 21:01:07,880 INFO L153 SettingsManager]: * Use SBE=true [2023-11-21 21:01:07,881 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 21:01:07,882 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-21 21:01:07,882 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 21:01:07,883 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-21 21:01:07,884 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 21:01:07,884 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-21 21:01:07,885 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-21 21:01:07,886 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-21 21:01:07,887 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 21:01:07,887 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-21 21:01:07,888 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-21 21:01:07,889 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-21 21:01:07,889 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 21:01:07,890 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 21:01:07,891 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-21 21:01:07,892 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 21:01:07,892 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 21:01:07,893 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 21:01:07,907 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 21:01:07,908 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 21:01:07,908 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-21 21:01:07,909 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-21 21:01:07,909 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 21:01:07,910 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-21 21:01:07,910 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-21 21:01:07,911 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 21:01:07,911 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_10e78b6c-a2aa-497d-84de-cb55aad1b72c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10e78b6c-a2aa-497d-84de-cb55aad1b72c/bin/uautomizer-verify-bycVGegfSx Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5fb05d1d9f477ac46601c94c33a401c10a8ea916dae173fdeb0112a4de2b3b31 [2023-11-21 21:01:08,205 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 21:01:08,233 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 21:01:08,236 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 21:01:08,237 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 21:01:08,238 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 21:01:08,239 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10e78b6c-a2aa-497d-84de-cb55aad1b72c/bin/uautomizer-verify-bycVGegfSx/../../sv-benchmarks/c/goblint-regression/13-privatized_37-traces-ex-4_true.i [2023-11-21 21:01:11,419 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 21:01:11,812 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 21:01:11,812 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10e78b6c-a2aa-497d-84de-cb55aad1b72c/sv-benchmarks/c/goblint-regression/13-privatized_37-traces-ex-4_true.i [2023-11-21 21:01:11,828 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10e78b6c-a2aa-497d-84de-cb55aad1b72c/bin/uautomizer-verify-bycVGegfSx/data/259fb0d4b/0ca740f2fccf45b6a19d64ddf6c8d7cd/FLAGcb31a8b9c [2023-11-21 21:01:11,860 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10e78b6c-a2aa-497d-84de-cb55aad1b72c/bin/uautomizer-verify-bycVGegfSx/data/259fb0d4b/0ca740f2fccf45b6a19d64ddf6c8d7cd [2023-11-21 21:01:11,867 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 21:01:11,870 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 21:01:11,873 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 21:01:11,873 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 21:01:11,878 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 21:01:11,881 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 09:01:11" (1/1) ... [2023-11-21 21:01:11,882 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4eaf60fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:01:11, skipping insertion in model container [2023-11-21 21:01:11,882 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 09:01:11" (1/1) ... [2023-11-21 21:01:11,948 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 21:01:12,373 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 21:01:12,392 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 21:01:12,438 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 21:01:12,483 INFO L206 MainTranslator]: Completed translation [2023-11-21 21:01:12,483 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:01:12 WrapperNode [2023-11-21 21:01:12,483 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 21:01:12,485 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 21:01:12,485 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 21:01:12,485 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 21:01:12,492 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:01:12" (1/1) ... [2023-11-21 21:01:12,507 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:01:12" (1/1) ... [2023-11-21 21:01:12,529 INFO L138 Inliner]: procedures = 163, calls = 35, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 57 [2023-11-21 21:01:12,530 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 21:01:12,531 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 21:01:12,531 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 21:01:12,531 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 21:01:12,540 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:01:12" (1/1) ... [2023-11-21 21:01:12,541 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:01:12" (1/1) ... [2023-11-21 21:01:12,544 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:01:12" (1/1) ... [2023-11-21 21:01:12,544 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:01:12" (1/1) ... [2023-11-21 21:01:12,551 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:01:12" (1/1) ... [2023-11-21 21:01:12,553 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:01:12" (1/1) ... [2023-11-21 21:01:12,554 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:01:12" (1/1) ... [2023-11-21 21:01:12,556 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:01:12" (1/1) ... [2023-11-21 21:01:12,559 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 21:01:12,560 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 21:01:12,560 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 21:01:12,560 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 21:01:12,561 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:01:12" (1/1) ... [2023-11-21 21:01:12,567 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 21:01:12,585 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10e78b6c-a2aa-497d-84de-cb55aad1b72c/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 21:01:12,598 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10e78b6c-a2aa-497d-84de-cb55aad1b72c/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-21 21:01:12,628 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10e78b6c-a2aa-497d-84de-cb55aad1b72c/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-21 21:01:12,637 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-21 21:01:12,638 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-21 21:01:12,638 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 21:01:12,638 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-21 21:01:12,639 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-11-21 21:01:12,639 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-11-21 21:01:12,639 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-21 21:01:12,639 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-21 21:01:12,639 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-11-21 21:01:12,640 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 21:01:12,640 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 21:01:12,641 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 21:01:12,791 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 21:01:12,794 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 21:01:13,018 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 21:01:13,227 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 21:01:13,227 INFO L308 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-21 21:01:13,229 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 09:01:13 BoogieIcfgContainer [2023-11-21 21:01:13,229 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 21:01:13,232 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-21 21:01:13,232 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-21 21:01:13,236 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-21 21:01:13,236 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 09:01:11" (1/3) ... [2023-11-21 21:01:13,237 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4418ef4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 09:01:13, skipping insertion in model container [2023-11-21 21:01:13,237 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:01:12" (2/3) ... [2023-11-21 21:01:13,238 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4418ef4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 09:01:13, skipping insertion in model container [2023-11-21 21:01:13,238 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 09:01:13" (3/3) ... [2023-11-21 21:01:13,239 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_37-traces-ex-4_true.i [2023-11-21 21:01:13,262 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-21 21:01:13,262 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-11-21 21:01:13,262 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-21 21:01:13,309 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-21 21:01:13,359 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 40 places, 38 transitions, 80 flow [2023-11-21 21:01:13,397 INFO L124 PetriNetUnfolderBase]: 2/37 cut-off events. [2023-11-21 21:01:13,398 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-21 21:01:13,402 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41 conditions, 37 events. 2/37 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 49 event pairs, 0 based on Foata normal form. 0/31 useless extension candidates. Maximal degree in co-relation 32. Up to 2 conditions per place. [2023-11-21 21:01:13,402 INFO L82 GeneralOperation]: Start removeDead. Operand has 40 places, 38 transitions, 80 flow [2023-11-21 21:01:13,406 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 38 places, 36 transitions, 75 flow [2023-11-21 21:01:13,430 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 21:01:13,437 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;@4b4c5266, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 21:01:13,437 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-11-21 21:01:13,441 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-21 21:01:13,442 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events. [2023-11-21 21:01:13,442 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-21 21:01:13,442 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 21:01:13,443 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-21 21:01:13,446 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 2 more)] === [2023-11-21 21:01:13,453 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:01:13,453 INFO L85 PathProgramCache]: Analyzing trace with hash 7727, now seen corresponding path program 1 times [2023-11-21 21:01:13,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:01:13,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450046223] [2023-11-21 21:01:13,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:01:13,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:01:13,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:01:13,760 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 21:01:13,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 21:01:13,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450046223] [2023-11-21 21:01:13,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450046223] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:01:13,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 21:01:13,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-21 21:01:13,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213202706] [2023-11-21 21:01:13,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:01:13,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 21:01:13,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 21:01:13,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 21:01:13,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 21:01:13,840 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 38 [2023-11-21 21:01:13,843 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 36 transitions, 75 flow. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 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 21:01:13,844 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 21:01:13,844 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 38 [2023-11-21 21:01:13,845 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 21:01:14,031 INFO L124 PetriNetUnfolderBase]: 81/232 cut-off events. [2023-11-21 21:01:14,031 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-21 21:01:14,033 INFO L83 FinitePrefix]: Finished finitePrefix Result has 420 conditions, 232 events. 81/232 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 950 event pairs, 72 based on Foata normal form. 19/248 useless extension candidates. Maximal degree in co-relation 408. Up to 164 conditions per place. [2023-11-21 21:01:14,037 INFO L140 encePairwiseOnDemand]: 33/38 looper letters, 28 selfloop transitions, 2 changer transitions 0/41 dead transitions. [2023-11-21 21:01:14,037 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 41 transitions, 145 flow [2023-11-21 21:01:14,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 21:01:14,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 21:01:14,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 69 transitions. [2023-11-21 21:01:14,051 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6052631578947368 [2023-11-21 21:01:14,052 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 69 transitions. [2023-11-21 21:01:14,052 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 69 transitions. [2023-11-21 21:01:14,053 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 21:01:14,056 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 69 transitions. [2023-11-21 21:01:14,058 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 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 21:01:14,062 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 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 21:01:14,062 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 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 21:01:14,064 INFO L175 Difference]: Start difference. First operand has 38 places, 36 transitions, 75 flow. Second operand 3 states and 69 transitions. [2023-11-21 21:01:14,065 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 41 transitions, 145 flow [2023-11-21 21:01:14,068 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 41 transitions, 144 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-21 21:01:14,070 INFO L231 Difference]: Finished difference. Result has 37 places, 32 transitions, 70 flow [2023-11-21 21:01:14,073 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=70, PETRI_PLACES=37, PETRI_TRANSITIONS=32} [2023-11-21 21:01:14,076 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, -1 predicate places. [2023-11-21 21:01:14,076 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 32 transitions, 70 flow [2023-11-21 21:01:14,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 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 21:01:14,077 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 21:01:14,077 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-21 21:01:14,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-21 21:01:14,078 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 2 more)] === [2023-11-21 21:01:14,078 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:01:14,078 INFO L85 PathProgramCache]: Analyzing trace with hash 7728, now seen corresponding path program 1 times [2023-11-21 21:01:14,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:01:14,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974714515] [2023-11-21 21:01:14,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:01:14,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:01:14,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:01:14,278 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 21:01:14,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 21:01:14,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974714515] [2023-11-21 21:01:14,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974714515] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:01:14,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 21:01:14,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-21 21:01:14,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795405282] [2023-11-21 21:01:14,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:01:14,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 21:01:14,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 21:01:14,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 21:01:14,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 21:01:14,290 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 38 [2023-11-21 21:01:14,290 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 32 transitions, 70 flow. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 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 21:01:14,290 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 21:01:14,290 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 38 [2023-11-21 21:01:14,290 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 21:01:14,439 INFO L124 PetriNetUnfolderBase]: 81/231 cut-off events. [2023-11-21 21:01:14,440 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-21 21:01:14,441 INFO L83 FinitePrefix]: Finished finitePrefix Result has 429 conditions, 231 events. 81/231 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 949 event pairs, 72 based on Foata normal form. 1/229 useless extension candidates. Maximal degree in co-relation 418. Up to 163 conditions per place. [2023-11-21 21:01:14,443 INFO L140 encePairwiseOnDemand]: 35/38 looper letters, 27 selfloop transitions, 2 changer transitions 0/40 dead transitions. [2023-11-21 21:01:14,443 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 40 transitions, 144 flow [2023-11-21 21:01:14,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 21:01:14,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 21:01:14,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 69 transitions. [2023-11-21 21:01:14,445 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6052631578947368 [2023-11-21 21:01:14,446 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 69 transitions. [2023-11-21 21:01:14,446 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 69 transitions. [2023-11-21 21:01:14,446 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 21:01:14,446 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 69 transitions. [2023-11-21 21:01:14,447 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 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 21:01:14,448 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 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 21:01:14,449 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 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 21:01:14,449 INFO L175 Difference]: Start difference. First operand has 37 places, 32 transitions, 70 flow. Second operand 3 states and 69 transitions. [2023-11-21 21:01:14,449 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 40 transitions, 144 flow [2023-11-21 21:01:14,450 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 40 transitions, 140 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-21 21:01:14,451 INFO L231 Difference]: Finished difference. Result has 36 places, 31 transitions, 68 flow [2023-11-21 21:01:14,452 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=68, PETRI_PLACES=36, PETRI_TRANSITIONS=31} [2023-11-21 21:01:14,452 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, -2 predicate places. [2023-11-21 21:01:14,453 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 31 transitions, 68 flow [2023-11-21 21:01:14,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 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 21:01:14,453 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 21:01:14,453 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 21:01:14,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-21 21:01:14,454 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 2 more)] === [2023-11-21 21:01:14,454 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:01:14,454 INFO L85 PathProgramCache]: Analyzing trace with hash -1856582964, now seen corresponding path program 1 times [2023-11-21 21:01:14,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:01:14,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410274045] [2023-11-21 21:01:14,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:01:14,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:01:14,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:01:14,634 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 21:01:14,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 21:01:14,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410274045] [2023-11-21 21:01:14,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [410274045] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:01:14,635 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 21:01:14,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 21:01:14,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089956460] [2023-11-21 21:01:14,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:01:14,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 21:01:14,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 21:01:14,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 21:01:14,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-21 21:01:14,639 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 38 [2023-11-21 21:01:14,639 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 31 transitions, 68 flow. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 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 21:01:14,639 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 21:01:14,639 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 38 [2023-11-21 21:01:14,640 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 21:01:14,771 INFO L124 PetriNetUnfolderBase]: 93/249 cut-off events. [2023-11-21 21:01:14,771 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-21 21:01:14,772 INFO L83 FinitePrefix]: Finished finitePrefix Result has 473 conditions, 249 events. 93/249 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1040 event pairs, 46 based on Foata normal form. 0/239 useless extension candidates. Maximal degree in co-relation 462. Up to 111 conditions per place. [2023-11-21 21:01:14,774 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 32 selfloop transitions, 10 changer transitions 0/52 dead transitions. [2023-11-21 21:01:14,774 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 52 transitions, 196 flow [2023-11-21 21:01:14,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-21 21:01:14,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-21 21:01:14,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 109 transitions. [2023-11-21 21:01:14,777 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5736842105263158 [2023-11-21 21:01:14,777 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 109 transitions. [2023-11-21 21:01:14,777 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 109 transitions. [2023-11-21 21:01:14,777 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 21:01:14,778 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 109 transitions. [2023-11-21 21:01:14,779 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:01:14,780 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 38.0) internal successors, (228), 6 states have internal predecessors, (228), 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 21:01:14,780 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 38.0) internal successors, (228), 6 states have internal predecessors, (228), 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 21:01:14,780 INFO L175 Difference]: Start difference. First operand has 36 places, 31 transitions, 68 flow. Second operand 5 states and 109 transitions. [2023-11-21 21:01:14,781 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 52 transitions, 196 flow [2023-11-21 21:01:14,782 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 52 transitions, 190 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-21 21:01:14,783 INFO L231 Difference]: Finished difference. Result has 42 places, 37 transitions, 126 flow [2023-11-21 21:01:14,784 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=126, PETRI_PLACES=42, PETRI_TRANSITIONS=37} [2023-11-21 21:01:14,784 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 4 predicate places. [2023-11-21 21:01:14,785 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 37 transitions, 126 flow [2023-11-21 21:01:14,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 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 21:01:14,785 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 21:01:14,785 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 21:01:14,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-21 21:01:14,786 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 2 more)] === [2023-11-21 21:01:14,786 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:01:14,786 INFO L85 PathProgramCache]: Analyzing trace with hash 440868504, now seen corresponding path program 1 times [2023-11-21 21:01:14,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:01:14,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367700418] [2023-11-21 21:01:14,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:01:14,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:01:14,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:01:14,943 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 21:01:14,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 21:01:14,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367700418] [2023-11-21 21:01:14,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1367700418] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:01:14,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 21:01:14,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 21:01:14,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253039699] [2023-11-21 21:01:14,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:01:14,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 21:01:14,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 21:01:14,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 21:01:14,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-21 21:01:14,962 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 38 [2023-11-21 21:01:14,963 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 37 transitions, 126 flow. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 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 21:01:14,963 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 21:01:14,963 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 38 [2023-11-21 21:01:14,963 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 21:01:15,093 INFO L124 PetriNetUnfolderBase]: 82/233 cut-off events. [2023-11-21 21:01:15,093 INFO L125 PetriNetUnfolderBase]: For 104/110 co-relation queries the response was YES. [2023-11-21 21:01:15,095 INFO L83 FinitePrefix]: Finished finitePrefix Result has 544 conditions, 233 events. 82/233 cut-off events. For 104/110 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 987 event pairs, 64 based on Foata normal form. 10/240 useless extension candidates. Maximal degree in co-relation 529. Up to 167 conditions per place. [2023-11-21 21:01:15,096 INFO L140 encePairwiseOnDemand]: 35/38 looper letters, 15 selfloop transitions, 1 changer transitions 20/45 dead transitions. [2023-11-21 21:01:15,096 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 45 transitions, 216 flow [2023-11-21 21:01:15,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-21 21:01:15,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-21 21:01:15,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 82 transitions. [2023-11-21 21:01:15,098 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5394736842105263 [2023-11-21 21:01:15,098 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 82 transitions. [2023-11-21 21:01:15,098 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 82 transitions. [2023-11-21 21:01:15,099 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 21:01:15,099 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 82 transitions. [2023-11-21 21:01:15,100 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 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 21:01:15,101 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 38.0) internal successors, (190), 5 states have internal predecessors, (190), 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 21:01:15,102 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 38.0) internal successors, (190), 5 states have internal predecessors, (190), 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 21:01:15,102 INFO L175 Difference]: Start difference. First operand has 42 places, 37 transitions, 126 flow. Second operand 4 states and 82 transitions. [2023-11-21 21:01:15,102 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 45 transitions, 216 flow [2023-11-21 21:01:15,105 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 45 transitions, 216 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-21 21:01:15,107 INFO L231 Difference]: Finished difference. Result has 44 places, 25 transitions, 76 flow [2023-11-21 21:01:15,107 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=41, 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=76, PETRI_PLACES=44, PETRI_TRANSITIONS=25} [2023-11-21 21:01:15,108 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 6 predicate places. [2023-11-21 21:01:15,108 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 25 transitions, 76 flow [2023-11-21 21:01:15,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 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 21:01:15,109 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 21:01:15,109 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 21:01:15,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-21 21:01:15,110 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 2 more)] === [2023-11-21 21:01:15,110 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:01:15,110 INFO L85 PathProgramCache]: Analyzing trace with hash 2023918049, now seen corresponding path program 1 times [2023-11-21 21:01:15,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:01:15,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002111661] [2023-11-21 21:01:15,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:01:15,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:01:15,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:01:15,301 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 21:01:15,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 21:01:15,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002111661] [2023-11-21 21:01:15,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2002111661] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:01:15,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 21:01:15,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 21:01:15,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376086958] [2023-11-21 21:01:15,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:01:15,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 21:01:15,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 21:01:15,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 21:01:15,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-21 21:01:15,305 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 38 [2023-11-21 21:01:15,306 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 25 transitions, 76 flow. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:01:15,306 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 21:01:15,306 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 38 [2023-11-21 21:01:15,306 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 21:01:15,347 INFO L124 PetriNetUnfolderBase]: 11/49 cut-off events. [2023-11-21 21:01:15,348 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-21 21:01:15,348 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107 conditions, 49 events. 11/49 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 55 event pairs, 2 based on Foata normal form. 9/57 useless extension candidates. Maximal degree in co-relation 100. Up to 29 conditions per place. [2023-11-21 21:01:15,349 INFO L140 encePairwiseOnDemand]: 34/38 looper letters, 0 selfloop transitions, 0 changer transitions 22/22 dead transitions. [2023-11-21 21:01:15,349 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 22 transitions, 92 flow [2023-11-21 21:01:15,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-21 21:01:15,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-21 21:01:15,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 74 transitions. [2023-11-21 21:01:15,353 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4868421052631579 [2023-11-21 21:01:15,353 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 74 transitions. [2023-11-21 21:01:15,353 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 74 transitions. [2023-11-21 21:01:15,354 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 21:01:15,354 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 74 transitions. [2023-11-21 21:01:15,355 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:01:15,355 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 38.0) internal successors, (190), 5 states have internal predecessors, (190), 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 21:01:15,356 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 38.0) internal successors, (190), 5 states have internal predecessors, (190), 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 21:01:15,356 INFO L175 Difference]: Start difference. First operand has 44 places, 25 transitions, 76 flow. Second operand 4 states and 74 transitions. [2023-11-21 21:01:15,356 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 22 transitions, 92 flow [2023-11-21 21:01:15,357 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 22 transitions, 79 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-21 21:01:15,358 INFO L231 Difference]: Finished difference. Result has 29 places, 0 transitions, 0 flow [2023-11-21 21:01:15,358 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=43, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=29, PETRI_TRANSITIONS=0} [2023-11-21 21:01:15,359 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, -9 predicate places. [2023-11-21 21:01:15,359 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 0 transitions, 0 flow [2023-11-21 21:01:15,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 21:01:15,362 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 5 remaining) [2023-11-21 21:01:15,363 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 5 remaining) [2023-11-21 21:01:15,364 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (2 of 5 remaining) [2023-11-21 21:01:15,364 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK (1 of 5 remaining) [2023-11-21 21:01:15,364 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 5 remaining) [2023-11-21 21:01:15,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-21 21:01:15,365 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-11-21 21:01:15,369 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-21 21:01:15,369 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-21 21:01:15,375 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.11 09:01:15 BasicIcfg [2023-11-21 21:01:15,375 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-21 21:01:15,376 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-21 21:01:15,376 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-21 21:01:15,376 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-21 21:01:15,377 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 09:01:13" (3/4) ... [2023-11-21 21:01:15,379 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-21 21:01:15,383 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t_fun [2023-11-21 21:01:15,390 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 29 nodes and edges [2023-11-21 21:01:15,390 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2023-11-21 21:01:15,390 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-21 21:01:15,390 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-21 21:01:15,490 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10e78b6c-a2aa-497d-84de-cb55aad1b72c/bin/uautomizer-verify-bycVGegfSx/witness.graphml [2023-11-21 21:01:15,491 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10e78b6c-a2aa-497d-84de-cb55aad1b72c/bin/uautomizer-verify-bycVGegfSx/witness.yml [2023-11-21 21:01:15,491 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-21 21:01:15,491 INFO L158 Benchmark]: Toolchain (without parser) took 3621.77ms. Allocated memory is still 151.0MB. Free memory was 118.3MB in the beginning and 83.4MB in the end (delta: 34.9MB). Peak memory consumption was 35.1MB. Max. memory is 16.1GB. [2023-11-21 21:01:15,492 INFO L158 Benchmark]: CDTParser took 0.42ms. Allocated memory is still 117.4MB. Free memory is still 85.1MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 21:01:15,492 INFO L158 Benchmark]: CACSL2BoogieTranslator took 611.43ms. Allocated memory is still 151.0MB. Free memory was 117.9MB in the beginning and 98.7MB in the end (delta: 19.2MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-21 21:01:15,493 INFO L158 Benchmark]: Boogie Procedure Inliner took 45.28ms. Allocated memory is still 151.0MB. Free memory was 98.7MB in the beginning and 96.7MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-21 21:01:15,493 INFO L158 Benchmark]: Boogie Preprocessor took 28.35ms. Allocated memory is still 151.0MB. Free memory was 96.7MB in the beginning and 95.0MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-21 21:01:15,493 INFO L158 Benchmark]: RCFGBuilder took 669.59ms. Allocated memory is still 151.0MB. Free memory was 95.0MB in the beginning and 115.9MB in the end (delta: -20.9MB). Peak memory consumption was 26.4MB. Max. memory is 16.1GB. [2023-11-21 21:01:15,496 INFO L158 Benchmark]: TraceAbstraction took 2143.44ms. Allocated memory is still 151.0MB. Free memory was 115.2MB in the beginning and 87.6MB in the end (delta: 27.7MB). Peak memory consumption was 27.6MB. Max. memory is 16.1GB. [2023-11-21 21:01:15,496 INFO L158 Benchmark]: Witness Printer took 115.00ms. Allocated memory is still 151.0MB. Free memory was 87.6MB in the beginning and 83.4MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-21 21:01:15,498 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.42ms. Allocated memory is still 117.4MB. Free memory is still 85.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 611.43ms. Allocated memory is still 151.0MB. Free memory was 117.9MB in the beginning and 98.7MB in the end (delta: 19.2MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 45.28ms. Allocated memory is still 151.0MB. Free memory was 98.7MB in the beginning and 96.7MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 28.35ms. Allocated memory is still 151.0MB. Free memory was 96.7MB in the beginning and 95.0MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 669.59ms. Allocated memory is still 151.0MB. Free memory was 95.0MB in the beginning and 115.9MB in the end (delta: -20.9MB). Peak memory consumption was 26.4MB. Max. memory is 16.1GB. * TraceAbstraction took 2143.44ms. Allocated memory is still 151.0MB. Free memory was 115.2MB in the beginning and 87.6MB in the end (delta: 27.7MB). Peak memory consumption was 27.6MB. Max. memory is 16.1GB. * Witness Printer took 115.00ms. Allocated memory is still 151.0MB. Free memory was 87.6MB in the beginning and 83.4MB in the end (delta: 4.2MB). 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: 18]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 695]: 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 3 procedures, 52 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 2.0s, OverallIterations: 5, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 117 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 99 mSDsluCounter, 7 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2 mSDsCounter, 9 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 227 IncrementalHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 9 mSolverCounterUnsat, 5 mSDtfsCounter, 227 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=126occurred in iteration=3, InterpolantAutomatonStates: 19, 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, 0.8s InterpolantComputationTime, 46 NumberOfCodeBlocks, 46 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 41 ConstructedInterpolants, 0 QuantifiedInterpolants, 201 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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 4 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-21 21:01:15,532 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_10e78b6c-a2aa-497d-84de-cb55aad1b72c/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE