./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/goblint-regression/36-apron_11-traces-max-simple_true.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 0e0057cc 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_05478ea0-825e-41ca-a7b4-a37d6f75d233/bin/uautomizer-verify-NlZe1sFDwI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05478ea0-825e-41ca-a7b4-a37d6f75d233/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_05478ea0-825e-41ca-a7b4-a37d6f75d233/bin/uautomizer-verify-NlZe1sFDwI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05478ea0-825e-41ca-a7b4-a37d6f75d233/bin/uautomizer-verify-NlZe1sFDwI/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/goblint-regression/36-apron_11-traces-max-simple_true.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05478ea0-825e-41ca-a7b4-a37d6f75d233/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_05478ea0-825e-41ca-a7b4-a37d6f75d233/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 6ec45a8cc5eb531168b9afc45cc8af1360572640b5394bd745e0b1188f31bc79 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 22:05:12,147 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 22:05:12,235 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05478ea0-825e-41ca-a7b4-a37d6f75d233/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-24 22:05:12,240 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 22:05:12,241 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 22:05:12,267 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 22:05:12,267 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 22:05:12,268 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 22:05:12,269 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-24 22:05:12,270 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-24 22:05:12,270 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 22:05:12,271 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 22:05:12,272 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-24 22:05:12,272 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-24 22:05:12,273 INFO L153 SettingsManager]: * Use SBE=true [2023-11-24 22:05:12,274 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 22:05:12,274 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-24 22:05:12,274 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 22:05:12,275 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-24 22:05:12,275 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 22:05:12,276 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-24 22:05:12,276 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-24 22:05:12,277 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-24 22:05:12,277 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 22:05:12,278 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-24 22:05:12,278 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-24 22:05:12,279 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-24 22:05:12,279 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 22:05:12,280 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 22:05:12,280 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-24 22:05:12,281 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 22:05:12,281 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 22:05:12,281 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 22:05:12,282 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 22:05:12,282 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 22:05:12,283 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-24 22:05:12,283 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 22:05:12,284 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 22:05:12,284 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-24 22:05:12,285 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-24 22:05:12,285 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 22:05:12,286 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_05478ea0-825e-41ca-a7b4-a37d6f75d233/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05478ea0-825e-41ca-a7b4-a37d6f75d233/bin/uautomizer-verify-NlZe1sFDwI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6ec45a8cc5eb531168b9afc45cc8af1360572640b5394bd745e0b1188f31bc79 [2023-11-24 22:05:12,569 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 22:05:12,590 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 22:05:12,592 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 22:05:12,593 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 22:05:12,594 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 22:05:12,595 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05478ea0-825e-41ca-a7b4-a37d6f75d233/bin/uautomizer-verify-NlZe1sFDwI/../../sv-benchmarks/c/goblint-regression/36-apron_11-traces-max-simple_true.i [2023-11-24 22:05:15,666 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 22:05:16,112 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 22:05:16,119 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05478ea0-825e-41ca-a7b4-a37d6f75d233/sv-benchmarks/c/goblint-regression/36-apron_11-traces-max-simple_true.i [2023-11-24 22:05:16,138 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05478ea0-825e-41ca-a7b4-a37d6f75d233/bin/uautomizer-verify-NlZe1sFDwI/data/7cdbb7f79/714618b97f67473684f228ea81330319/FLAG74361aa2d [2023-11-24 22:05:16,153 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05478ea0-825e-41ca-a7b4-a37d6f75d233/bin/uautomizer-verify-NlZe1sFDwI/data/7cdbb7f79/714618b97f67473684f228ea81330319 [2023-11-24 22:05:16,156 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 22:05:16,158 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 22:05:16,160 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 22:05:16,160 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 22:05:16,166 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 22:05:16,167 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 10:05:16" (1/1) ... [2023-11-24 22:05:16,168 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39ae90c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:05:16, skipping insertion in model container [2023-11-24 22:05:16,169 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 10:05:16" (1/1) ... [2023-11-24 22:05:16,215 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 22:05:16,644 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 22:05:16,662 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 22:05:16,728 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 22:05:16,780 INFO L206 MainTranslator]: Completed translation [2023-11-24 22:05:16,781 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:05:16 WrapperNode [2023-11-24 22:05:16,781 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 22:05:16,782 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 22:05:16,783 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 22:05:16,783 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 22:05:16,791 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:05:16" (1/1) ... [2023-11-24 22:05:16,806 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:05:16" (1/1) ... [2023-11-24 22:05:16,836 INFO L138 Inliner]: procedures = 163, calls = 24, calls flagged for inlining = 5, calls inlined = 6, statements flattened = 67 [2023-11-24 22:05:16,837 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 22:05:16,838 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 22:05:16,838 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 22:05:16,838 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 22:05:16,849 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:05:16" (1/1) ... [2023-11-24 22:05:16,850 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:05:16" (1/1) ... [2023-11-24 22:05:16,865 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:05:16" (1/1) ... [2023-11-24 22:05:16,880 INFO L175 MemorySlicer]: Split 8 memory accesses to 3 slices as follows [2, 1, 5]. 63 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 0, 5]. The 1 writes are split as follows [0, 1, 0]. [2023-11-24 22:05:16,880 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:05:16" (1/1) ... [2023-11-24 22:05:16,881 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:05:16" (1/1) ... [2023-11-24 22:05:16,887 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:05:16" (1/1) ... [2023-11-24 22:05:16,898 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:05:16" (1/1) ... [2023-11-24 22:05:16,900 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:05:16" (1/1) ... [2023-11-24 22:05:16,902 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:05:16" (1/1) ... [2023-11-24 22:05:16,905 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 22:05:16,909 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 22:05:16,917 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 22:05:16,918 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 22:05:16,919 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:05:16" (1/1) ... [2023-11-24 22:05:16,925 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 22:05:16,939 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05478ea0-825e-41ca-a7b4-a37d6f75d233/bin/uautomizer-verify-NlZe1sFDwI/z3 [2023-11-24 22:05:16,957 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05478ea0-825e-41ca-a7b4-a37d6f75d233/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-24 22:05:16,964 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05478ea0-825e-41ca-a7b4-a37d6f75d233/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-24 22:05:17,003 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-24 22:05:17,003 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-24 22:05:17,003 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-24 22:05:17,004 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-24 22:05:17,004 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 22:05:17,004 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-24 22:05:17,005 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-11-24 22:05:17,005 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-11-24 22:05:17,005 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-24 22:05:17,005 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-24 22:05:17,006 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-24 22:05:17,006 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-24 22:05:17,008 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-11-24 22:05:17,008 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 22:05:17,009 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 22:05:17,010 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 22:05:17,224 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 22:05:17,230 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 22:05:17,463 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 22:05:17,592 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 22:05:17,592 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-24 22:05:17,593 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 10:05:17 BoogieIcfgContainer [2023-11-24 22:05:17,593 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 22:05:17,596 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 22:05:17,596 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 22:05:17,600 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 22:05:17,600 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 10:05:16" (1/3) ... [2023-11-24 22:05:17,601 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66d2f1f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 10:05:17, skipping insertion in model container [2023-11-24 22:05:17,601 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:05:16" (2/3) ... [2023-11-24 22:05:17,602 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66d2f1f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 10:05:17, skipping insertion in model container [2023-11-24 22:05:17,602 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 10:05:17" (3/3) ... [2023-11-24 22:05:17,604 INFO L112 eAbstractionObserver]: Analyzing ICFG 36-apron_11-traces-max-simple_true.i [2023-11-24 22:05:17,670 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 22:05:17,671 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2023-11-24 22:05:17,671 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-24 22:05:17,721 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-24 22:05:17,755 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 34 places, 34 transitions, 72 flow [2023-11-24 22:05:17,782 INFO L124 PetriNetUnfolderBase]: 4/33 cut-off events. [2023-11-24 22:05:17,782 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-24 22:05:17,786 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37 conditions, 33 events. 4/33 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 65 event pairs, 0 based on Foata normal form. 0/24 useless extension candidates. Maximal degree in co-relation 28. Up to 2 conditions per place. [2023-11-24 22:05:17,786 INFO L82 GeneralOperation]: Start removeDead. Operand has 34 places, 34 transitions, 72 flow [2023-11-24 22:05:17,790 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 33 places, 33 transitions, 69 flow [2023-11-24 22:05:17,802 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-24 22:05:17,810 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;@d8336bb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 22:05:17,810 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-11-24 22:05:17,814 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-24 22:05:17,815 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events. [2023-11-24 22:05:17,815 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-24 22:05:17,815 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 22:05:17,816 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-24 22:05:17,817 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 4 more)] === [2023-11-24 22:05:17,822 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:05:17,823 INFO L85 PathProgramCache]: Analyzing trace with hash 7176, now seen corresponding path program 1 times [2023-11-24 22:05:17,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:05:17,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942221008] [2023-11-24 22:05:17,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:05:17,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:05:17,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:05:18,130 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 22:05:18,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:05:18,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942221008] [2023-11-24 22:05:18,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942221008] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:05:18,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:05:18,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-24 22:05:18,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215664095] [2023-11-24 22:05:18,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:05:18,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 22:05:18,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:05:18,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 22:05:18,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 22:05:18,191 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 34 [2023-11-24 22:05:18,194 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 33 transitions, 69 flow. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 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 22:05:18,194 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 22:05:18,195 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 34 [2023-11-24 22:05:18,196 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 22:05:18,330 INFO L124 PetriNetUnfolderBase]: 48/149 cut-off events. [2023-11-24 22:05:18,330 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-24 22:05:18,331 INFO L83 FinitePrefix]: Finished finitePrefix Result has 267 conditions, 149 events. 48/149 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 625 event pairs, 36 based on Foata normal form. 31/177 useless extension candidates. Maximal degree in co-relation 255. Up to 87 conditions per place. [2023-11-24 22:05:18,335 INFO L140 encePairwiseOnDemand]: 27/34 looper letters, 21 selfloop transitions, 2 changer transitions 0/32 dead transitions. [2023-11-24 22:05:18,335 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 32 transitions, 113 flow [2023-11-24 22:05:18,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 22:05:18,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 22:05:18,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 60 transitions. [2023-11-24 22:05:18,348 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5882352941176471 [2023-11-24 22:05:18,349 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 60 transitions. [2023-11-24 22:05:18,350 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 60 transitions. [2023-11-24 22:05:18,351 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 22:05:18,353 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 60 transitions. [2023-11-24 22:05:18,356 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 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 22:05:18,363 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 34.0) internal successors, (136), 4 states have internal predecessors, (136), 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 22:05:18,363 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 34.0) internal successors, (136), 4 states have internal predecessors, (136), 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 22:05:18,365 INFO L175 Difference]: Start difference. First operand has 33 places, 33 transitions, 69 flow. Second operand 3 states and 60 transitions. [2023-11-24 22:05:18,367 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 32 transitions, 113 flow [2023-11-24 22:05:18,369 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 32 transitions, 112 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-24 22:05:18,372 INFO L231 Difference]: Finished difference. Result has 31 places, 26 transitions, 58 flow [2023-11-24 22:05:18,374 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=58, PETRI_PLACES=31, PETRI_TRANSITIONS=26} [2023-11-24 22:05:18,380 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, -2 predicate places. [2023-11-24 22:05:18,381 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 26 transitions, 58 flow [2023-11-24 22:05:18,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 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 22:05:18,381 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 22:05:18,381 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-24 22:05:18,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-24 22:05:18,382 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 4 more)] === [2023-11-24 22:05:18,383 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:05:18,383 INFO L85 PathProgramCache]: Analyzing trace with hash 7177, now seen corresponding path program 1 times [2023-11-24 22:05:18,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:05:18,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056889125] [2023-11-24 22:05:18,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:05:18,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:05:18,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:05:18,589 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 22:05:18,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:05:18,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056889125] [2023-11-24 22:05:18,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1056889125] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:05:18,590 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:05:18,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-24 22:05:18,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889840967] [2023-11-24 22:05:18,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:05:18,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 22:05:18,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:05:18,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 22:05:18,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 22:05:18,602 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 34 [2023-11-24 22:05:18,603 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 26 transitions, 58 flow. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 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 22:05:18,603 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 22:05:18,603 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 34 [2023-11-24 22:05:18,604 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 22:05:18,704 INFO L124 PetriNetUnfolderBase]: 48/148 cut-off events. [2023-11-24 22:05:18,704 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-24 22:05:18,706 INFO L83 FinitePrefix]: Finished finitePrefix Result has 273 conditions, 148 events. 48/148 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 630 event pairs, 36 based on Foata normal form. 1/146 useless extension candidates. Maximal degree in co-relation 262. Up to 86 conditions per place. [2023-11-24 22:05:18,708 INFO L140 encePairwiseOnDemand]: 31/34 looper letters, 20 selfloop transitions, 2 changer transitions 0/31 dead transitions. [2023-11-24 22:05:18,708 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 31 transitions, 112 flow [2023-11-24 22:05:18,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 22:05:18,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 22:05:18,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 56 transitions. [2023-11-24 22:05:18,711 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5490196078431373 [2023-11-24 22:05:18,711 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 56 transitions. [2023-11-24 22:05:18,712 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 56 transitions. [2023-11-24 22:05:18,712 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 22:05:18,712 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 56 transitions. [2023-11-24 22:05:18,714 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 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 22:05:18,716 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 34.0) internal successors, (136), 4 states have internal predecessors, (136), 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 22:05:18,716 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 34.0) internal successors, (136), 4 states have internal predecessors, (136), 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 22:05:18,716 INFO L175 Difference]: Start difference. First operand has 31 places, 26 transitions, 58 flow. Second operand 3 states and 56 transitions. [2023-11-24 22:05:18,716 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 31 transitions, 112 flow [2023-11-24 22:05:18,717 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 31 transitions, 108 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-24 22:05:18,721 INFO L231 Difference]: Finished difference. Result has 30 places, 25 transitions, 56 flow [2023-11-24 22:05:18,721 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=56, PETRI_PLACES=30, PETRI_TRANSITIONS=25} [2023-11-24 22:05:18,723 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, -3 predicate places. [2023-11-24 22:05:18,723 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 25 transitions, 56 flow [2023-11-24 22:05:18,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 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 22:05:18,724 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 22:05:18,724 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 22:05:18,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-24 22:05:18,725 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 4 more)] === [2023-11-24 22:05:18,725 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:05:18,726 INFO L85 PathProgramCache]: Analyzing trace with hash 1991146412, now seen corresponding path program 1 times [2023-11-24 22:05:18,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:05:18,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373217222] [2023-11-24 22:05:18,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:05:18,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:05:18,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:05:18,831 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 22:05:18,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:05:18,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373217222] [2023-11-24 22:05:18,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373217222] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:05:18,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:05:18,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 22:05:18,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056703139] [2023-11-24 22:05:18,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:05:18,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 22:05:18,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:05:18,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 22:05:18,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 22:05:18,837 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 34 [2023-11-24 22:05:18,837 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 25 transitions, 56 flow. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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 22:05:18,838 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 22:05:18,838 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 34 [2023-11-24 22:05:18,838 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 22:05:18,936 INFO L124 PetriNetUnfolderBase]: 48/132 cut-off events. [2023-11-24 22:05:18,936 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-24 22:05:18,937 INFO L83 FinitePrefix]: Finished finitePrefix Result has 257 conditions, 132 events. 48/132 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 491 event pairs, 36 based on Foata normal form. 0/131 useless extension candidates. Maximal degree in co-relation 246. Up to 87 conditions per place. [2023-11-24 22:05:18,938 INFO L140 encePairwiseOnDemand]: 31/34 looper letters, 20 selfloop transitions, 2 changer transitions 0/28 dead transitions. [2023-11-24 22:05:18,938 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 28 transitions, 106 flow [2023-11-24 22:05:18,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 22:05:18,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 22:05:18,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 56 transitions. [2023-11-24 22:05:18,942 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5490196078431373 [2023-11-24 22:05:18,943 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 56 transitions. [2023-11-24 22:05:18,943 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 56 transitions. [2023-11-24 22:05:18,944 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 22:05:18,945 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 56 transitions. [2023-11-24 22:05:18,945 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 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 22:05:18,946 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 34.0) internal successors, (136), 4 states have internal predecessors, (136), 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 22:05:18,946 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 34.0) internal successors, (136), 4 states have internal predecessors, (136), 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 22:05:18,946 INFO L175 Difference]: Start difference. First operand has 30 places, 25 transitions, 56 flow. Second operand 3 states and 56 transitions. [2023-11-24 22:05:18,947 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 28 transitions, 106 flow [2023-11-24 22:05:18,950 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 28 transitions, 102 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-24 22:05:18,951 INFO L231 Difference]: Finished difference. Result has 27 places, 22 transitions, 50 flow [2023-11-24 22:05:18,951 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=50, PETRI_PLACES=27, PETRI_TRANSITIONS=22} [2023-11-24 22:05:18,952 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, -6 predicate places. [2023-11-24 22:05:18,953 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 22 transitions, 50 flow [2023-11-24 22:05:18,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 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 22:05:18,953 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 22:05:18,953 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 22:05:18,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-24 22:05:18,954 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 4 more)] === [2023-11-24 22:05:18,954 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:05:18,954 INFO L85 PathProgramCache]: Analyzing trace with hash -1544848813, now seen corresponding path program 1 times [2023-11-24 22:05:18,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:05:18,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197769546] [2023-11-24 22:05:18,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:05:18,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:05:18,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:05:19,024 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 22:05:19,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:05:19,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197769546] [2023-11-24 22:05:19,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [197769546] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:05:19,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:05:19,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 22:05:19,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11876810] [2023-11-24 22:05:19,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:05:19,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 22:05:19,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:05:19,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 22:05:19,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 22:05:19,028 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 34 [2023-11-24 22:05:19,029 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 22 transitions, 50 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) [2023-11-24 22:05:19,029 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 22:05:19,029 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 34 [2023-11-24 22:05:19,029 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 22:05:19,078 INFO L124 PetriNetUnfolderBase]: 42/107 cut-off events. [2023-11-24 22:05:19,078 INFO L125 PetriNetUnfolderBase]: For 12/12 co-relation queries the response was YES. [2023-11-24 22:05:19,078 INFO L83 FinitePrefix]: Finished finitePrefix Result has 225 conditions, 107 events. 42/107 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 328 event pairs, 28 based on Foata normal form. 0/106 useless extension candidates. Maximal degree in co-relation 215. Up to 70 conditions per place. [2023-11-24 22:05:19,079 INFO L140 encePairwiseOnDemand]: 31/34 looper letters, 18 selfloop transitions, 2 changer transitions 2/26 dead transitions. [2023-11-24 22:05:19,079 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 26 transitions, 106 flow [2023-11-24 22:05:19,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 22:05:19,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 22:05:19,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 56 transitions. [2023-11-24 22:05:19,081 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5490196078431373 [2023-11-24 22:05:19,081 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 56 transitions. [2023-11-24 22:05:19,081 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 56 transitions. [2023-11-24 22:05:19,081 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 22:05:19,082 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 56 transitions. [2023-11-24 22:05:19,082 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 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 22:05:19,083 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 34.0) internal successors, (136), 4 states have internal predecessors, (136), 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 22:05:19,083 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 34.0) internal successors, (136), 4 states have internal predecessors, (136), 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 22:05:19,083 INFO L175 Difference]: Start difference. First operand has 27 places, 22 transitions, 50 flow. Second operand 3 states and 56 transitions. [2023-11-24 22:05:19,083 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 26 transitions, 106 flow [2023-11-24 22:05:19,084 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 26 transitions, 98 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-24 22:05:19,085 INFO L231 Difference]: Finished difference. Result has 24 places, 18 transitions, 42 flow [2023-11-24 22:05:19,085 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=42, PETRI_PLACES=24, PETRI_TRANSITIONS=18} [2023-11-24 22:05:19,086 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, -9 predicate places. [2023-11-24 22:05:19,086 INFO L495 AbstractCegarLoop]: Abstraction has has 24 places, 18 transitions, 42 flow [2023-11-24 22:05:19,086 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) [2023-11-24 22:05:19,086 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 22:05:19,086 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 22:05:19,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-24 22:05:19,087 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 4 more)] === [2023-11-24 22:05:19,087 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:05:19,087 INFO L85 PathProgramCache]: Analyzing trace with hash -2063898235, now seen corresponding path program 1 times [2023-11-24 22:05:19,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 22:05:19,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099925789] [2023-11-24 22:05:19,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:05:19,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 22:05:19,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:05:19,195 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 22:05:19,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 22:05:19,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099925789] [2023-11-24 22:05:19,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099925789] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:05:19,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:05:19,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 22:05:19,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682839661] [2023-11-24 22:05:19,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:05:19,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 22:05:19,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 22:05:19,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 22:05:19,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 22:05:19,211 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 34 [2023-11-24 22:05:19,211 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 18 transitions, 42 flow. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 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 22:05:19,211 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 22:05:19,211 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 34 [2023-11-24 22:05:19,211 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 22:05:19,260 INFO L124 PetriNetUnfolderBase]: 30/82 cut-off events. [2023-11-24 22:05:19,260 INFO L125 PetriNetUnfolderBase]: For 13/13 co-relation queries the response was YES. [2023-11-24 22:05:19,261 INFO L83 FinitePrefix]: Finished finitePrefix Result has 174 conditions, 82 events. 30/82 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 231 event pairs, 25 based on Foata normal form. 6/86 useless extension candidates. Maximal degree in co-relation 164. Up to 62 conditions per place. [2023-11-24 22:05:19,262 INFO L140 encePairwiseOnDemand]: 31/34 looper letters, 0 selfloop transitions, 0 changer transitions 22/22 dead transitions. [2023-11-24 22:05:19,262 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 22 transitions, 90 flow [2023-11-24 22:05:19,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 22:05:19,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-24 22:05:19,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 63 transitions. [2023-11-24 22:05:19,271 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4632352941176471 [2023-11-24 22:05:19,271 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 63 transitions. [2023-11-24 22:05:19,271 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 63 transitions. [2023-11-24 22:05:19,271 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 22:05:19,271 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 63 transitions. [2023-11-24 22:05:19,273 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 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) [2023-11-24 22:05:19,274 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 34.0) internal successors, (170), 5 states have internal predecessors, (170), 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 22:05:19,274 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 34.0) internal successors, (170), 5 states have internal predecessors, (170), 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 22:05:19,275 INFO L175 Difference]: Start difference. First operand has 24 places, 18 transitions, 42 flow. Second operand 4 states and 63 transitions. [2023-11-24 22:05:19,275 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 22 transitions, 90 flow [2023-11-24 22:05:19,276 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 22 transitions, 82 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-24 22:05:19,276 INFO L231 Difference]: Finished difference. Result has 23 places, 0 transitions, 0 flow [2023-11-24 22:05:19,277 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=34, PETRI_DIFFERENCE_MINUEND_FLOW=36, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=23, PETRI_TRANSITIONS=0} [2023-11-24 22:05:19,280 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, -10 predicate places. [2023-11-24 22:05:19,280 INFO L495 AbstractCegarLoop]: Abstraction has has 23 places, 0 transitions, 0 flow [2023-11-24 22:05:19,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 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 22:05:19,283 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 7 remaining) [2023-11-24 22:05:19,284 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 7 remaining) [2023-11-24 22:05:19,284 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (4 of 7 remaining) [2023-11-24 22:05:19,284 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK (3 of 7 remaining) [2023-11-24 22:05:19,285 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 7 remaining) [2023-11-24 22:05:19,285 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONMEMORY_LEAK (1 of 7 remaining) [2023-11-24 22:05:19,285 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONMEMORY_LEAK (0 of 7 remaining) [2023-11-24 22:05:19,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-24 22:05:19,286 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-11-24 22:05:19,293 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-24 22:05:19,293 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-24 22:05:19,307 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.11 10:05:19 BasicIcfg [2023-11-24 22:05:19,308 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-24 22:05:19,308 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-24 22:05:19,308 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-24 22:05:19,309 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-24 22:05:19,309 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 10:05:17" (3/4) ... [2023-11-24 22:05:19,311 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-24 22:05:19,314 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t_fun [2023-11-24 22:05:19,319 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 25 nodes and edges [2023-11-24 22:05:19,319 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2023-11-24 22:05:19,319 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-24 22:05:19,319 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-11-24 22:05:19,398 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05478ea0-825e-41ca-a7b4-a37d6f75d233/bin/uautomizer-verify-NlZe1sFDwI/witness.graphml [2023-11-24 22:05:19,398 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05478ea0-825e-41ca-a7b4-a37d6f75d233/bin/uautomizer-verify-NlZe1sFDwI/witness.yml [2023-11-24 22:05:19,399 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-24 22:05:19,399 INFO L158 Benchmark]: Toolchain (without parser) took 3241.46ms. Allocated memory is still 161.5MB. Free memory was 128.2MB in the beginning and 78.0MB in the end (delta: 50.2MB). Peak memory consumption was 50.8MB. Max. memory is 16.1GB. [2023-11-24 22:05:19,400 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 117.4MB. Free memory is still 73.3MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-24 22:05:19,400 INFO L158 Benchmark]: CACSL2BoogieTranslator took 621.73ms. Allocated memory is still 161.5MB. Free memory was 127.9MB in the beginning and 108.6MB in the end (delta: 19.3MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-24 22:05:19,400 INFO L158 Benchmark]: Boogie Procedure Inliner took 54.67ms. Allocated memory is still 161.5MB. Free memory was 108.6MB in the beginning and 106.6MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-24 22:05:19,401 INFO L158 Benchmark]: Boogie Preprocessor took 70.49ms. Allocated memory is still 161.5MB. Free memory was 106.6MB in the beginning and 104.6MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-24 22:05:19,401 INFO L158 Benchmark]: RCFGBuilder took 684.36ms. Allocated memory is still 161.5MB. Free memory was 104.3MB in the beginning and 83.3MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-24 22:05:19,402 INFO L158 Benchmark]: TraceAbstraction took 1711.99ms. Allocated memory is still 161.5MB. Free memory was 82.7MB in the beginning and 82.2MB in the end (delta: 469.0kB). Peak memory consumption was 2.6MB. Max. memory is 16.1GB. [2023-11-24 22:05:19,402 INFO L158 Benchmark]: Witness Printer took 90.43ms. Allocated memory is still 161.5MB. Free memory was 82.2MB in the beginning and 78.0MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-24 22:05:19,404 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 117.4MB. Free memory is still 73.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 621.73ms. Allocated memory is still 161.5MB. Free memory was 127.9MB in the beginning and 108.6MB in the end (delta: 19.3MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 54.67ms. Allocated memory is still 161.5MB. Free memory was 108.6MB in the beginning and 106.6MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 70.49ms. Allocated memory is still 161.5MB. Free memory was 106.6MB in the beginning and 104.6MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 684.36ms. Allocated memory is still 161.5MB. Free memory was 104.3MB in the beginning and 83.3MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * TraceAbstraction took 1711.99ms. Allocated memory is still 161.5MB. Free memory was 82.7MB in the beginning and 82.2MB in the end (delta: 469.0kB). Peak memory consumption was 2.6MB. Max. memory is 16.1GB. * Witness Printer took 90.43ms. Allocated memory is still 161.5MB. Free memory was 82.2MB in the beginning and 78.0MB 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: 690]: all allocated memory was freed For all program executions holds that all allocated memory was freed 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 - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 44 locations, 7 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 1.5s, OverallIterations: 5, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 82 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 60 mSDsluCounter, 9 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1 mSDsCounter, 3 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 181 IncrementalHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3 mSolverCounterUnsat, 8 mSDtfsCounter, 181 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=69occurred in iteration=0, InterpolantAutomatonStates: 16, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 33 NumberOfCodeBlocks, 33 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 28 ConstructedInterpolants, 0 QuantifiedInterpolants, 93 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 5 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-24 22:05:19,421 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05478ea0-825e-41ca-a7b4-a37d6f75d233/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