./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/goblint-regression/13-privatized_03-priv_inv.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 0e0057cc 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_eff83b42-b9d4-4be3-b9d2-66386907c1d4/bin/uautomizer-verify-NlZe1sFDwI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eff83b42-b9d4-4be3-b9d2-66386907c1d4/bin/uautomizer-verify-NlZe1sFDwI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eff83b42-b9d4-4be3-b9d2-66386907c1d4/bin/uautomizer-verify-NlZe1sFDwI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eff83b42-b9d4-4be3-b9d2-66386907c1d4/bin/uautomizer-verify-NlZe1sFDwI/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/goblint-regression/13-privatized_03-priv_inv.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eff83b42-b9d4-4be3-b9d2-66386907c1d4/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eff83b42-b9d4-4be3-b9d2-66386907c1d4/bin/uautomizer-verify-NlZe1sFDwI --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 f20707f1105ba10067156ebf4074b2c6b4682bff1e09b23f43a3f8b7604511aa --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 21:45:01,259 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 21:45:01,359 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eff83b42-b9d4-4be3-b9d2-66386907c1d4/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-24 21:45:01,366 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 21:45:01,366 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 21:45:01,390 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 21:45:01,391 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 21:45:01,392 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 21:45:01,392 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-24 21:45:01,393 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-24 21:45:01,394 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 21:45:01,394 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 21:45:01,395 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-24 21:45:01,396 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-24 21:45:01,396 INFO L153 SettingsManager]: * Use SBE=true [2023-11-24 21:45:01,397 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 21:45:01,397 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-24 21:45:01,398 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 21:45:01,398 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-24 21:45:01,399 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 21:45:01,399 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-24 21:45:01,400 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-24 21:45:01,400 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-24 21:45:01,401 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 21:45:01,401 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-24 21:45:01,402 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-24 21:45:01,402 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-24 21:45:01,403 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 21:45:01,403 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 21:45:01,404 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-24 21:45:01,404 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 21:45:01,405 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 21:45:01,405 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 21:45:01,406 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 21:45:01,406 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 21:45:01,407 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-24 21:45:01,407 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 21:45:01,408 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 21:45:01,408 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-24 21:45:01,409 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-24 21:45:01,409 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 21:45:01,411 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_eff83b42-b9d4-4be3-b9d2-66386907c1d4/bin/uautomizer-verify-NlZe1sFDwI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eff83b42-b9d4-4be3-b9d2-66386907c1d4/bin/uautomizer-verify-NlZe1sFDwI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f20707f1105ba10067156ebf4074b2c6b4682bff1e09b23f43a3f8b7604511aa [2023-11-24 21:45:01,718 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 21:45:01,753 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 21:45:01,756 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 21:45:01,757 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 21:45:01,758 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 21:45:01,759 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eff83b42-b9d4-4be3-b9d2-66386907c1d4/bin/uautomizer-verify-NlZe1sFDwI/../../sv-benchmarks/c/goblint-regression/13-privatized_03-priv_inv.i [2023-11-24 21:45:05,007 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 21:45:05,323 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 21:45:05,324 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eff83b42-b9d4-4be3-b9d2-66386907c1d4/sv-benchmarks/c/goblint-regression/13-privatized_03-priv_inv.i [2023-11-24 21:45:05,342 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eff83b42-b9d4-4be3-b9d2-66386907c1d4/bin/uautomizer-verify-NlZe1sFDwI/data/f9b8af2ba/380de5f31a0b416a989a819599d17ba9/FLAG9930ccdd0 [2023-11-24 21:45:05,357 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eff83b42-b9d4-4be3-b9d2-66386907c1d4/bin/uautomizer-verify-NlZe1sFDwI/data/f9b8af2ba/380de5f31a0b416a989a819599d17ba9 [2023-11-24 21:45:05,360 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 21:45:05,362 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 21:45:05,363 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 21:45:05,363 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 21:45:05,369 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 21:45:05,370 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 09:45:05" (1/1) ... [2023-11-24 21:45:05,371 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@634ca26e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:45:05, skipping insertion in model container [2023-11-24 21:45:05,371 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 09:45:05" (1/1) ... [2023-11-24 21:45:05,437 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 21:45:05,816 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 21:45:05,834 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 21:45:05,913 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 21:45:05,965 INFO L206 MainTranslator]: Completed translation [2023-11-24 21:45:05,965 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:45:05 WrapperNode [2023-11-24 21:45:05,965 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 21:45:05,967 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 21:45:05,967 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 21:45:05,967 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 21:45:05,976 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:45:05" (1/1) ... [2023-11-24 21:45:06,005 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:45:05" (1/1) ... [2023-11-24 21:45:06,030 INFO L138 Inliner]: procedures = 166, calls = 37, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 68 [2023-11-24 21:45:06,030 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 21:45:06,031 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 21:45:06,032 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 21:45:06,032 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 21:45:06,044 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:45:05" (1/1) ... [2023-11-24 21:45:06,045 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:45:05" (1/1) ... [2023-11-24 21:45:06,048 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:45:05" (1/1) ... [2023-11-24 21:45:06,069 INFO L175 MemorySlicer]: Split 21 memory accesses to 4 slices as follows [7, 7, 5, 2]. 33 percent of accesses are in the largest equivalence class. The 19 initializations are split as follows [7, 7, 5, 0]. The 1 writes are split as follows [0, 0, 0, 1]. [2023-11-24 21:45:06,070 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:45:05" (1/1) ... [2023-11-24 21:45:06,070 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:45:05" (1/1) ... [2023-11-24 21:45:06,077 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:45:05" (1/1) ... [2023-11-24 21:45:06,079 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:45:05" (1/1) ... [2023-11-24 21:45:06,097 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:45:05" (1/1) ... [2023-11-24 21:45:06,099 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:45:05" (1/1) ... [2023-11-24 21:45:06,102 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 21:45:06,103 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 21:45:06,103 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 21:45:06,104 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 21:45:06,104 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:45:05" (1/1) ... [2023-11-24 21:45:06,118 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 21:45:06,131 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eff83b42-b9d4-4be3-b9d2-66386907c1d4/bin/uautomizer-verify-NlZe1sFDwI/z3 [2023-11-24 21:45:06,146 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eff83b42-b9d4-4be3-b9d2-66386907c1d4/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-24 21:45:06,184 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eff83b42-b9d4-4be3-b9d2-66386907c1d4/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-24 21:45:06,201 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-24 21:45:06,201 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-24 21:45:06,201 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-24 21:45:06,201 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-24 21:45:06,201 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-24 21:45:06,202 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-24 21:45:06,202 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-24 21:45:06,202 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-24 21:45:06,202 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-24 21:45:06,202 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 21:45:06,202 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-24 21:45:06,203 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-11-24 21:45:06,204 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-11-24 21:45:06,205 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-24 21:45:06,205 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-24 21:45:06,205 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-24 21:45:06,205 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-24 21:45:06,206 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-24 21:45:06,206 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-11-24 21:45:06,206 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 21:45:06,206 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 21:45:06,208 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-24 21:45:06,425 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 21:45:06,427 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 21:45:06,640 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 21:45:06,885 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 21:45:06,885 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-24 21:45:06,886 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 09:45:06 BoogieIcfgContainer [2023-11-24 21:45:06,886 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 21:45:06,889 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 21:45:06,889 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 21:45:06,893 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 21:45:06,893 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 09:45:05" (1/3) ... [2023-11-24 21:45:06,894 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6404fcba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 09:45:06, skipping insertion in model container [2023-11-24 21:45:06,894 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:45:05" (2/3) ... [2023-11-24 21:45:06,895 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6404fcba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 09:45:06, skipping insertion in model container [2023-11-24 21:45:06,895 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 09:45:06" (3/3) ... [2023-11-24 21:45:06,896 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_03-priv_inv.i [2023-11-24 21:45:06,918 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 21:45:06,918 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2023-11-24 21:45:06,918 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-24 21:45:06,956 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-11-24 21:45:06,994 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 39 places, 38 transitions, 83 flow [2023-11-24 21:45:07,025 INFO L124 PetriNetUnfolderBase]: 3/37 cut-off events. [2023-11-24 21:45:07,026 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-24 21:45:07,029 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42 conditions, 37 events. 3/37 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 55 event pairs, 0 based on Foata normal form. 0/27 useless extension candidates. Maximal degree in co-relation 23. Up to 2 conditions per place. [2023-11-24 21:45:07,029 INFO L82 GeneralOperation]: Start removeDead. Operand has 39 places, 38 transitions, 83 flow [2023-11-24 21:45:07,033 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 37 places, 36 transitions, 78 flow [2023-11-24 21:45:07,044 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-24 21:45:07,052 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;@73106a0f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 21:45:07,052 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2023-11-24 21:45:07,057 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-24 21:45:07,057 INFO L124 PetriNetUnfolderBase]: 1/5 cut-off events. [2023-11-24 21:45:07,057 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-24 21:45:07,058 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:45:07,058 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-24 21:45:07,059 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-24 21:45:07,064 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:45:07,065 INFO L85 PathProgramCache]: Analyzing trace with hash 238804, now seen corresponding path program 1 times [2023-11-24 21:45:07,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:45:07,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500833161] [2023-11-24 21:45:07,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:45:07,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:45:07,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:45:07,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:45:07,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:45:07,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500833161] [2023-11-24 21:45:07,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500833161] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:45:07,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:45:07,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 21:45:07,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997899872] [2023-11-24 21:45:07,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:45:07,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:45:07,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:45:07,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:45:07,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:45:07,450 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 38 [2023-11-24 21:45:07,453 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 36 transitions, 78 flow. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 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) [2023-11-24 21:45:07,453 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:45:07,454 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 38 [2023-11-24 21:45:07,455 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:45:07,593 INFO L124 PetriNetUnfolderBase]: 32/143 cut-off events. [2023-11-24 21:45:07,593 INFO L125 PetriNetUnfolderBase]: For 7/8 co-relation queries the response was YES. [2023-11-24 21:45:07,595 INFO L83 FinitePrefix]: Finished finitePrefix Result has 240 conditions, 143 events. 32/143 cut-off events. For 7/8 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 621 event pairs, 18 based on Foata normal form. 14/138 useless extension candidates. Maximal degree in co-relation 212. Up to 61 conditions per place. [2023-11-24 21:45:07,599 INFO L140 encePairwiseOnDemand]: 29/38 looper letters, 24 selfloop transitions, 5 changer transitions 0/42 dead transitions. [2023-11-24 21:45:07,599 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 42 transitions, 151 flow [2023-11-24 21:45:07,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:45:07,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 21:45:07,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 79 transitions. [2023-11-24 21:45:07,615 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6929824561403509 [2023-11-24 21:45:07,616 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 79 transitions. [2023-11-24 21:45:07,617 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 79 transitions. [2023-11-24 21:45:07,620 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:45:07,623 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 79 transitions. [2023-11-24 21:45:07,626 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 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) [2023-11-24 21:45:07,633 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) [2023-11-24 21:45:07,633 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) [2023-11-24 21:45:07,635 INFO L175 Difference]: Start difference. First operand has 37 places, 36 transitions, 78 flow. Second operand 3 states and 79 transitions. [2023-11-24 21:45:07,637 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 42 transitions, 151 flow [2023-11-24 21:45:07,639 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 42 transitions, 145 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-24 21:45:07,643 INFO L231 Difference]: Finished difference. Result has 37 places, 35 transitions, 102 flow [2023-11-24 21:45:07,645 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=102, PETRI_PLACES=37, PETRI_TRANSITIONS=35} [2023-11-24 21:45:07,650 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 0 predicate places. [2023-11-24 21:45:07,650 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 35 transitions, 102 flow [2023-11-24 21:45:07,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 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) [2023-11-24 21:45:07,651 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:45:07,651 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-24 21:45:07,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-24 21:45:07,652 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-24 21:45:07,653 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:45:07,653 INFO L85 PathProgramCache]: Analyzing trace with hash 7402692, now seen corresponding path program 1 times [2023-11-24 21:45:07,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:45:07,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957267516] [2023-11-24 21:45:07,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:45:07,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:45:07,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:45:07,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:45:07,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:45:07,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957267516] [2023-11-24 21:45:07,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1957267516] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:45:07,846 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:45:07,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-24 21:45:07,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686170187] [2023-11-24 21:45:07,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:45:07,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:45:07,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:45:07,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:45:07,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:45:07,869 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 38 [2023-11-24 21:45:07,869 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 35 transitions, 102 flow. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:45:07,869 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:45:07,870 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 38 [2023-11-24 21:45:07,870 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:45:07,927 INFO L124 PetriNetUnfolderBase]: 25/120 cut-off events. [2023-11-24 21:45:07,928 INFO L125 PetriNetUnfolderBase]: For 19/21 co-relation queries the response was YES. [2023-11-24 21:45:07,929 INFO L83 FinitePrefix]: Finished finitePrefix Result has 239 conditions, 120 events. 25/120 cut-off events. For 19/21 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 496 event pairs, 22 based on Foata normal form. 0/115 useless extension candidates. Maximal degree in co-relation 50. Up to 66 conditions per place. [2023-11-24 21:45:07,930 INFO L140 encePairwiseOnDemand]: 34/38 looper letters, 15 selfloop transitions, 2 changer transitions 0/33 dead transitions. [2023-11-24 21:45:07,930 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 33 transitions, 132 flow [2023-11-24 21:45:07,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:45:07,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 21:45:07,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 69 transitions. [2023-11-24 21:45:07,934 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6052631578947368 [2023-11-24 21:45:07,934 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 69 transitions. [2023-11-24 21:45:07,935 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 69 transitions. [2023-11-24 21:45:07,936 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:45:07,936 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 69 transitions. [2023-11-24 21:45:07,940 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) [2023-11-24 21:45:07,941 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) [2023-11-24 21:45:07,943 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) [2023-11-24 21:45:07,944 INFO L175 Difference]: Start difference. First operand has 37 places, 35 transitions, 102 flow. Second operand 3 states and 69 transitions. [2023-11-24 21:45:07,945 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 33 transitions, 132 flow [2023-11-24 21:45:07,947 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 33 transitions, 122 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-24 21:45:07,950 INFO L231 Difference]: Finished difference. Result has 35 places, 33 transitions, 92 flow [2023-11-24 21:45:07,951 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=92, PETRI_PLACES=35, PETRI_TRANSITIONS=33} [2023-11-24 21:45:07,952 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, -2 predicate places. [2023-11-24 21:45:07,952 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 33 transitions, 92 flow [2023-11-24 21:45:07,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:45:07,954 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:45:07,954 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-24 21:45:07,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-24 21:45:07,959 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-24 21:45:07,961 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:45:07,962 INFO L85 PathProgramCache]: Analyzing trace with hash 7402693, now seen corresponding path program 1 times [2023-11-24 21:45:07,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:45:07,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081239101] [2023-11-24 21:45:07,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:45:07,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:45:08,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:45:08,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:45:08,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:45:08,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081239101] [2023-11-24 21:45:08,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081239101] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:45:08,134 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:45:08,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-24 21:45:08,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052530833] [2023-11-24 21:45:08,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:45:08,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:45:08,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:45:08,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:45:08,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:45:08,151 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 38 [2023-11-24 21:45:08,152 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 33 transitions, 92 flow. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:45:08,152 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:45:08,152 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 38 [2023-11-24 21:45:08,152 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:45:08,232 INFO L124 PetriNetUnfolderBase]: 20/105 cut-off events. [2023-11-24 21:45:08,232 INFO L125 PetriNetUnfolderBase]: For 4/7 co-relation queries the response was YES. [2023-11-24 21:45:08,233 INFO L83 FinitePrefix]: Finished finitePrefix Result has 196 conditions, 105 events. 20/105 cut-off events. For 4/7 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 419 event pairs, 17 based on Foata normal form. 7/106 useless extension candidates. Maximal degree in co-relation 180. Up to 53 conditions per place. [2023-11-24 21:45:08,234 INFO L140 encePairwiseOnDemand]: 34/38 looper letters, 13 selfloop transitions, 2 changer transitions 0/31 dead transitions. [2023-11-24 21:45:08,234 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 31 transitions, 118 flow [2023-11-24 21:45:08,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:45:08,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 21:45:08,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 73 transitions. [2023-11-24 21:45:08,237 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6403508771929824 [2023-11-24 21:45:08,237 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 73 transitions. [2023-11-24 21:45:08,238 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 73 transitions. [2023-11-24 21:45:08,238 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:45:08,238 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 73 transitions. [2023-11-24 21:45:08,240 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 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) [2023-11-24 21:45:08,241 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) [2023-11-24 21:45:08,241 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) [2023-11-24 21:45:08,242 INFO L175 Difference]: Start difference. First operand has 35 places, 33 transitions, 92 flow. Second operand 3 states and 73 transitions. [2023-11-24 21:45:08,242 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 31 transitions, 118 flow [2023-11-24 21:45:08,243 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 31 transitions, 114 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-24 21:45:08,245 INFO L231 Difference]: Finished difference. Result has 33 places, 31 transitions, 88 flow [2023-11-24 21:45:08,246 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=31, 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=88, PETRI_PLACES=33, PETRI_TRANSITIONS=31} [2023-11-24 21:45:08,248 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, -4 predicate places. [2023-11-24 21:45:08,248 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 31 transitions, 88 flow [2023-11-24 21:45:08,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:45:08,249 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:45:08,249 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:45:08,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-24 21:45:08,249 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-24 21:45:08,250 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:45:08,251 INFO L85 PathProgramCache]: Analyzing trace with hash 989324939, now seen corresponding path program 1 times [2023-11-24 21:45:08,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:45:08,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157296481] [2023-11-24 21:45:08,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:45:08,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:45:08,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:45:08,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:45:08,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:45:08,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157296481] [2023-11-24 21:45:08,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157296481] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:45:08,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:45:08,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 21:45:08,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545881996] [2023-11-24 21:45:08,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:45:08,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:45:08,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:45:08,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:45:08,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:45:08,377 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 38 [2023-11-24 21:45:08,378 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 31 transitions, 88 flow. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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) [2023-11-24 21:45:08,378 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:45:08,378 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 38 [2023-11-24 21:45:08,378 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:45:08,457 INFO L124 PetriNetUnfolderBase]: 29/112 cut-off events. [2023-11-24 21:45:08,457 INFO L125 PetriNetUnfolderBase]: For 13/14 co-relation queries the response was YES. [2023-11-24 21:45:08,460 INFO L83 FinitePrefix]: Finished finitePrefix Result has 235 conditions, 112 events. 29/112 cut-off events. For 13/14 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 400 event pairs, 19 based on Foata normal form. 8/119 useless extension candidates. Maximal degree in co-relation 219. Up to 62 conditions per place. [2023-11-24 21:45:08,461 INFO L140 encePairwiseOnDemand]: 32/38 looper letters, 22 selfloop transitions, 4 changer transitions 0/35 dead transitions. [2023-11-24 21:45:08,461 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 35 transitions, 148 flow [2023-11-24 21:45:08,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:45:08,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 21:45:08,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 76 transitions. [2023-11-24 21:45:08,469 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2023-11-24 21:45:08,469 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 76 transitions. [2023-11-24 21:45:08,469 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 76 transitions. [2023-11-24 21:45:08,469 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:45:08,469 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 76 transitions. [2023-11-24 21:45:08,470 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:45:08,471 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) [2023-11-24 21:45:08,471 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) [2023-11-24 21:45:08,471 INFO L175 Difference]: Start difference. First operand has 33 places, 31 transitions, 88 flow. Second operand 3 states and 76 transitions. [2023-11-24 21:45:08,471 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 35 transitions, 148 flow [2023-11-24 21:45:08,472 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 35 transitions, 144 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-24 21:45:08,473 INFO L231 Difference]: Finished difference. Result has 35 places, 31 transitions, 106 flow [2023-11-24 21:45:08,474 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=106, PETRI_PLACES=35, PETRI_TRANSITIONS=31} [2023-11-24 21:45:08,474 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, -2 predicate places. [2023-11-24 21:45:08,475 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 31 transitions, 106 flow [2023-11-24 21:45:08,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 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) [2023-11-24 21:45:08,475 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:45:08,475 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:45:08,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-24 21:45:08,476 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-24 21:45:08,476 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:45:08,476 INFO L85 PathProgramCache]: Analyzing trace with hash -1766862354, now seen corresponding path program 1 times [2023-11-24 21:45:08,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:45:08,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453274899] [2023-11-24 21:45:08,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:45:08,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:45:08,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:45:08,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:45:08,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:45:08,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453274899] [2023-11-24 21:45:08,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453274899] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:45:08,571 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:45:08,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 21:45:08,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778442659] [2023-11-24 21:45:08,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:45:08,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 21:45:08,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:45:08,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 21:45:08,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 21:45:08,586 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 38 [2023-11-24 21:45:08,586 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 31 transitions, 106 flow. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:45:08,587 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:45:08,587 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 38 [2023-11-24 21:45:08,587 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:45:08,645 INFO L124 PetriNetUnfolderBase]: 10/55 cut-off events. [2023-11-24 21:45:08,646 INFO L125 PetriNetUnfolderBase]: For 13/14 co-relation queries the response was YES. [2023-11-24 21:45:08,646 INFO L83 FinitePrefix]: Finished finitePrefix Result has 131 conditions, 55 events. 10/55 cut-off events. For 13/14 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 108 event pairs, 4 based on Foata normal form. 6/61 useless extension candidates. Maximal degree in co-relation 52. Up to 18 conditions per place. [2023-11-24 21:45:08,647 INFO L140 encePairwiseOnDemand]: 31/38 looper letters, 12 selfloop transitions, 7 changer transitions 0/26 dead transitions. [2023-11-24 21:45:08,647 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 26 transitions, 112 flow [2023-11-24 21:45:08,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-24 21:45:08,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-24 21:45:08,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 97 transitions. [2023-11-24 21:45:08,648 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5105263157894737 [2023-11-24 21:45:08,649 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 97 transitions. [2023-11-24 21:45:08,649 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 97 transitions. [2023-11-24 21:45:08,649 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:45:08,649 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 97 transitions. [2023-11-24 21:45:08,650 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 19.4) internal successors, (97), 5 states have internal predecessors, (97), 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) [2023-11-24 21:45:08,651 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) [2023-11-24 21:45:08,651 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) [2023-11-24 21:45:08,652 INFO L175 Difference]: Start difference. First operand has 35 places, 31 transitions, 106 flow. Second operand 5 states and 97 transitions. [2023-11-24 21:45:08,652 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 26 transitions, 112 flow [2023-11-24 21:45:08,653 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 26 transitions, 92 flow, removed 3 selfloop flow, removed 6 redundant places. [2023-11-24 21:45:08,654 INFO L231 Difference]: Finished difference. Result has 29 places, 23 transitions, 62 flow [2023-11-24 21:45:08,654 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=62, PETRI_PLACES=29, PETRI_TRANSITIONS=23} [2023-11-24 21:45:08,655 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, -8 predicate places. [2023-11-24 21:45:08,655 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 23 transitions, 62 flow [2023-11-24 21:45:08,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:45:08,656 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:45:08,656 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:45:08,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-24 21:45:08,656 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-24 21:45:08,657 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:45:08,657 INFO L85 PathProgramCache]: Analyzing trace with hash -1218525671, now seen corresponding path program 1 times [2023-11-24 21:45:08,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:45:08,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614249490] [2023-11-24 21:45:08,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:45:08,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:45:08,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:45:08,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:45:08,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:45:08,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614249490] [2023-11-24 21:45:08,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614249490] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:45:08,846 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:45:08,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 21:45:08,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446071206] [2023-11-24 21:45:08,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:45:08,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 21:45:08,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:45:08,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 21:45:08,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 21:45:08,877 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 38 [2023-11-24 21:45:08,877 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 23 transitions, 62 flow. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:45:08,877 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:45:08,877 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 38 [2023-11-24 21:45:08,878 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:45:08,912 INFO L124 PetriNetUnfolderBase]: 7/49 cut-off events. [2023-11-24 21:45:08,912 INFO L125 PetriNetUnfolderBase]: For 8/9 co-relation queries the response was YES. [2023-11-24 21:45:08,912 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100 conditions, 49 events. 7/49 cut-off events. For 8/9 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 97 event pairs, 7 based on Foata normal form. 1/48 useless extension candidates. Maximal degree in co-relation 10. Up to 28 conditions per place. [2023-11-24 21:45:08,912 INFO L140 encePairwiseOnDemand]: 35/38 looper letters, 0 selfloop transitions, 0 changer transitions 22/22 dead transitions. [2023-11-24 21:45:08,913 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 22 transitions, 84 flow [2023-11-24 21:45:08,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 21:45:08,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-24 21:45:08,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 93 transitions. [2023-11-24 21:45:08,914 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6118421052631579 [2023-11-24 21:45:08,914 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 93 transitions. [2023-11-24 21:45:08,915 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 93 transitions. [2023-11-24 21:45:08,915 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:45:08,915 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 93 transitions. [2023-11-24 21:45:08,916 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:45:08,917 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) [2023-11-24 21:45:08,917 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) [2023-11-24 21:45:08,917 INFO L175 Difference]: Start difference. First operand has 29 places, 23 transitions, 62 flow. Second operand 4 states and 93 transitions. [2023-11-24 21:45:08,917 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 22 transitions, 84 flow [2023-11-24 21:45:08,918 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 22 transitions, 75 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-24 21:45:08,919 INFO L231 Difference]: Finished difference. Result has 28 places, 0 transitions, 0 flow [2023-11-24 21:45:08,919 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=51, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=28, PETRI_TRANSITIONS=0} [2023-11-24 21:45:08,920 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, -9 predicate places. [2023-11-24 21:45:08,920 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 0 transitions, 0 flow [2023-11-24 21:45:08,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:45:08,923 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (7 of 8 remaining) [2023-11-24 21:45:08,924 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 8 remaining) [2023-11-24 21:45:08,924 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 8 remaining) [2023-11-24 21:45:08,925 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK (4 of 8 remaining) [2023-11-24 21:45:08,925 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 8 remaining) [2023-11-24 21:45:08,925 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 8 remaining) [2023-11-24 21:45:08,926 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK (1 of 8 remaining) [2023-11-24 21:45:08,926 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 8 remaining) [2023-11-24 21:45:08,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-24 21:45:08,926 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2023-11-24 21:45:08,930 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-24 21:45:08,931 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-24 21:45:08,939 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.11 09:45:08 BasicIcfg [2023-11-24 21:45:08,939 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-24 21:45:08,940 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-24 21:45:08,940 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-24 21:45:08,940 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-24 21:45:08,941 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 09:45:06" (3/4) ... [2023-11-24 21:45:08,943 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-24 21:45:08,947 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t_fun [2023-11-24 21:45:08,954 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 46 nodes and edges [2023-11-24 21:45:08,955 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2023-11-24 21:45:08,956 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2023-11-24 21:45:08,956 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-11-24 21:45:08,956 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-24 21:45:08,956 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-24 21:45:09,065 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eff83b42-b9d4-4be3-b9d2-66386907c1d4/bin/uautomizer-verify-NlZe1sFDwI/witness.graphml [2023-11-24 21:45:09,066 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eff83b42-b9d4-4be3-b9d2-66386907c1d4/bin/uautomizer-verify-NlZe1sFDwI/witness.yml [2023-11-24 21:45:09,066 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-24 21:45:09,067 INFO L158 Benchmark]: Toolchain (without parser) took 3705.12ms. Allocated memory was 130.0MB in the beginning and 176.2MB in the end (delta: 46.1MB). Free memory was 84.9MB in the beginning and 66.4MB in the end (delta: 18.5MB). Peak memory consumption was 65.1MB. Max. memory is 16.1GB. [2023-11-24 21:45:09,067 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 130.0MB. Free memory is still 100.6MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-24 21:45:09,068 INFO L158 Benchmark]: CACSL2BoogieTranslator took 602.67ms. Allocated memory is still 130.0MB. Free memory was 84.4MB in the beginning and 64.5MB in the end (delta: 19.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-24 21:45:09,068 INFO L158 Benchmark]: Boogie Procedure Inliner took 64.04ms. Allocated memory is still 130.0MB. Free memory was 64.5MB in the beginning and 62.3MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-24 21:45:09,069 INFO L158 Benchmark]: Boogie Preprocessor took 71.11ms. Allocated memory is still 130.0MB. Free memory was 62.3MB in the beginning and 60.3MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-24 21:45:09,069 INFO L158 Benchmark]: RCFGBuilder took 783.03ms. Allocated memory was 130.0MB in the beginning and 176.2MB in the end (delta: 46.1MB). Free memory was 60.3MB in the beginning and 135.5MB in the end (delta: -75.2MB). Peak memory consumption was 30.6MB. Max. memory is 16.1GB. [2023-11-24 21:45:09,070 INFO L158 Benchmark]: TraceAbstraction took 2049.93ms. Allocated memory is still 176.2MB. Free memory was 134.5MB in the beginning and 70.6MB in the end (delta: 63.9MB). Peak memory consumption was 63.9MB. Max. memory is 16.1GB. [2023-11-24 21:45:09,070 INFO L158 Benchmark]: Witness Printer took 126.48ms. Allocated memory is still 176.2MB. Free memory was 70.6MB in the beginning and 66.4MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-24 21:45:09,072 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 130.0MB. Free memory is still 100.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 602.67ms. Allocated memory is still 130.0MB. Free memory was 84.4MB in the beginning and 64.5MB in the end (delta: 19.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 64.04ms. Allocated memory is still 130.0MB. Free memory was 64.5MB in the beginning and 62.3MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 71.11ms. Allocated memory is still 130.0MB. Free memory was 62.3MB in the beginning and 60.3MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 783.03ms. Allocated memory was 130.0MB in the beginning and 176.2MB in the end (delta: 46.1MB). Free memory was 60.3MB in the beginning and 135.5MB in the end (delta: -75.2MB). Peak memory consumption was 30.6MB. Max. memory is 16.1GB. * TraceAbstraction took 2049.93ms. Allocated memory is still 176.2MB. Free memory was 134.5MB in the beginning and 70.6MB in the end (delta: 63.9MB). Peak memory consumption was 63.9MB. Max. memory is 16.1GB. * Witness Printer took 126.48ms. Allocated memory is still 176.2MB. Free memory was 70.6MB in the beginning and 66.4MB 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: 704]: all allocated memory was freed For all program executions holds that all allocated memory was freed 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: 708]: all allocated memory was freed For all program executions holds that all allocated memory was freed 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: 702]: 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, 47 locations, 8 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 1.9s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 148 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 87 mSDsluCounter, 23 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3 mSDsCounter, 22 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 209 IncrementalHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 22 mSolverCounterUnsat, 20 mSDtfsCounter, 209 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=106occurred in iteration=4, InterpolantAutomatonStates: 21, 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, 0.7s InterpolantComputationTime, 60 NumberOfCodeBlocks, 60 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 54 ConstructedInterpolants, 0 QuantifiedInterpolants, 217 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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 7 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-24 21:45:09,103 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eff83b42-b9d4-4be3-b9d2-66386907c1d4/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE