./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/goblint-regression/06-symbeq_13-equ_proc_nr.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version a0165632 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_a318819c-1a87-478f-b812-0fa48d222bca/bin/uautomizer-verify-jihMAELWvX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a318819c-1a87-478f-b812-0fa48d222bca/bin/uautomizer-verify-jihMAELWvX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a318819c-1a87-478f-b812-0fa48d222bca/bin/uautomizer-verify-jihMAELWvX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a318819c-1a87-478f-b812-0fa48d222bca/bin/uautomizer-verify-jihMAELWvX/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/goblint-regression/06-symbeq_13-equ_proc_nr.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a318819c-1a87-478f-b812-0fa48d222bca/bin/uautomizer-verify-jihMAELWvX/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a318819c-1a87-478f-b812-0fa48d222bca/bin/uautomizer-verify-jihMAELWvX --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 7aa541197ab3d76d3553dcc8603f5c865e8a029202164eb406db53a61111f080 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-08 17:26:00,174 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 17:26:00,296 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a318819c-1a87-478f-b812-0fa48d222bca/bin/uautomizer-verify-jihMAELWvX/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-08 17:26:00,303 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 17:26:00,306 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 17:26:00,355 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 17:26:00,356 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 17:26:00,357 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 17:26:00,358 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 17:26:00,361 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 17:26:00,361 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 17:26:00,362 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 17:26:00,363 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 17:26:00,364 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 17:26:00,369 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 17:26:00,369 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 17:26:00,370 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 17:26:00,370 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 17:26:00,371 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 17:26:00,371 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 17:26:00,372 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-08 17:26:00,373 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-08 17:26:00,376 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-08 17:26:00,377 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 17:26:00,377 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-08 17:26:00,378 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 17:26:00,378 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-08 17:26:00,378 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 17:26:00,379 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 17:26:00,379 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 17:26:00,380 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 17:26:00,380 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 17:26:00,381 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 17:26:00,381 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 17:26:00,382 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 17:26:00,383 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 17:26:00,384 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-08 17:26:00,384 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 17:26:00,385 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 17:26:00,386 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 17:26:00,386 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 17:26:00,387 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 17:26:00,387 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_a318819c-1a87-478f-b812-0fa48d222bca/bin/uautomizer-verify-jihMAELWvX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a318819c-1a87-478f-b812-0fa48d222bca/bin/uautomizer-verify-jihMAELWvX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7aa541197ab3d76d3553dcc8603f5c865e8a029202164eb406db53a61111f080 [2024-11-08 17:26:00,736 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 17:26:00,769 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 17:26:00,787 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 17:26:00,791 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 17:26:00,791 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 17:26:00,793 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a318819c-1a87-478f-b812-0fa48d222bca/bin/uautomizer-verify-jihMAELWvX/../../sv-benchmarks/c/goblint-regression/06-symbeq_13-equ_proc_nr.i Unable to find full path for "g++" [2024-11-08 17:26:03,176 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 17:26:03,522 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 17:26:03,523 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a318819c-1a87-478f-b812-0fa48d222bca/sv-benchmarks/c/goblint-regression/06-symbeq_13-equ_proc_nr.i [2024-11-08 17:26:03,548 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a318819c-1a87-478f-b812-0fa48d222bca/bin/uautomizer-verify-jihMAELWvX/data/3baa81781/b8833aa76a5b40bdb8627d1a4814b331/FLAG9705e6ffe [2024-11-08 17:26:03,786 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a318819c-1a87-478f-b812-0fa48d222bca/bin/uautomizer-verify-jihMAELWvX/data/3baa81781/b8833aa76a5b40bdb8627d1a4814b331 [2024-11-08 17:26:03,789 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 17:26:03,791 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 17:26:03,793 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 17:26:03,793 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 17:26:03,805 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 17:26:03,806 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 05:26:03" (1/1) ... [2024-11-08 17:26:03,808 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75171c1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:26:03, skipping insertion in model container [2024-11-08 17:26:03,808 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 05:26:03" (1/1) ... [2024-11-08 17:26:03,897 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 17:26:04,580 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 17:26:04,612 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 17:26:04,680 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 17:26:04,844 INFO L204 MainTranslator]: Completed translation [2024-11-08 17:26:04,846 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:26:04 WrapperNode [2024-11-08 17:26:04,847 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 17:26:04,852 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 17:26:04,852 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 17:26:04,852 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 17:26:04,865 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:26:04" (1/1) ... [2024-11-08 17:26:04,897 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:26:04" (1/1) ... [2024-11-08 17:26:04,937 INFO L138 Inliner]: procedures = 266, calls = 24, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 52 [2024-11-08 17:26:04,939 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 17:26:04,940 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 17:26:04,941 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 17:26:04,942 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 17:26:04,956 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:26:04" (1/1) ... [2024-11-08 17:26:04,957 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:26:04" (1/1) ... [2024-11-08 17:26:04,959 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:26:04" (1/1) ... [2024-11-08 17:26:04,993 INFO L175 MemorySlicer]: Split 14 memory accesses to 1 slices as follows [14]. 100 percent of accesses are in the largest equivalence class. The 12 initializations are split as follows [12]. The 2 writes are split as follows [2]. [2024-11-08 17:26:04,994 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:26:04" (1/1) ... [2024-11-08 17:26:04,994 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:26:04" (1/1) ... [2024-11-08 17:26:05,000 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:26:04" (1/1) ... [2024-11-08 17:26:05,003 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:26:04" (1/1) ... [2024-11-08 17:26:05,005 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:26:04" (1/1) ... [2024-11-08 17:26:05,006 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:26:04" (1/1) ... [2024-11-08 17:26:05,009 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 17:26:05,010 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 17:26:05,011 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 17:26:05,011 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 17:26:05,012 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:26:04" (1/1) ... [2024-11-08 17:26:05,020 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 17:26:05,040 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a318819c-1a87-478f-b812-0fa48d222bca/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:26:05,058 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a318819c-1a87-478f-b812-0fa48d222bca/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-08 17:26:05,062 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a318819c-1a87-478f-b812-0fa48d222bca/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-08 17:26:05,095 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-08 17:26:05,096 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-08 17:26:05,096 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-08 17:26:05,096 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 17:26:05,097 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-11-08 17:26:05,097 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-11-08 17:26:05,097 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-08 17:26:05,097 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 17:26:05,097 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 17:26:05,099 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-08 17:26:05,264 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 17:26:05,267 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 17:26:05,515 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-08 17:26:05,515 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 17:26:05,730 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 17:26:05,731 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-08 17:26:05,731 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 05:26:05 BoogieIcfgContainer [2024-11-08 17:26:05,731 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 17:26:05,738 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 17:26:05,738 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 17:26:05,744 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 17:26:05,745 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 05:26:03" (1/3) ... [2024-11-08 17:26:05,746 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d39c416 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 05:26:05, skipping insertion in model container [2024-11-08 17:26:05,746 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:26:04" (2/3) ... [2024-11-08 17:26:05,747 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d39c416 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 05:26:05, skipping insertion in model container [2024-11-08 17:26:05,748 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 05:26:05" (3/3) ... [2024-11-08 17:26:05,751 INFO L112 eAbstractionObserver]: Analyzing ICFG 06-symbeq_13-equ_proc_nr.i [2024-11-08 17:26:05,772 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 17:26:05,772 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2024-11-08 17:26:05,772 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-08 17:26:05,814 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-08 17:26:05,865 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 25 places, 21 transitions, 46 flow [2024-11-08 17:26:05,914 INFO L124 PetriNetUnfolderBase]: 0/20 cut-off events. [2024-11-08 17:26:05,915 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-08 17:26:05,918 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24 conditions, 20 events. 0/20 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 30 event pairs, 0 based on Foata normal form. 0/15 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-11-08 17:26:05,919 INFO L82 GeneralOperation]: Start removeDead. Operand has 25 places, 21 transitions, 46 flow [2024-11-08 17:26:05,923 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 24 places, 20 transitions, 43 flow [2024-11-08 17:26:05,937 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 17:26:05,944 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=None, 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;@3897e88e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 17:26:05,944 INFO L334 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2024-11-08 17:26:05,954 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-08 17:26:05,954 INFO L124 PetriNetUnfolderBase]: 0/9 cut-off events. [2024-11-08 17:26:05,954 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-08 17:26:05,955 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:26:05,956 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-08 17:26:05,956 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 5 more)] === [2024-11-08 17:26:05,963 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:26:05,964 INFO L85 PathProgramCache]: Analyzing trace with hash 1340882196, now seen corresponding path program 1 times [2024-11-08 17:26:05,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:26:05,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449399280] [2024-11-08 17:26:05,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:26:05,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:26:06,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:26:06,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:26:06,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:26:06,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449399280] [2024-11-08 17:26:06,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [449399280] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:26:06,453 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:26:06,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-08 17:26:06,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224099379] [2024-11-08 17:26:06,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:26:06,467 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 17:26:06,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:26:06,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 17:26:06,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 17:26:06,533 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 21 [2024-11-08 17:26:06,536 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 20 transitions, 43 flow. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 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) [2024-11-08 17:26:06,536 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:26:06,536 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 21 [2024-11-08 17:26:06,538 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:26:06,607 INFO L124 PetriNetUnfolderBase]: 21/67 cut-off events. [2024-11-08 17:26:06,608 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-08 17:26:06,610 INFO L83 FinitePrefix]: Finished finitePrefix Result has 126 conditions, 67 events. 21/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 220 event pairs, 21 based on Foata normal form. 7/67 useless extension candidates. Maximal degree in co-relation 117. Up to 54 conditions per place. [2024-11-08 17:26:06,612 INFO L140 encePairwiseOnDemand]: 19/21 looper letters, 11 selfloop transitions, 1 changer transitions 0/19 dead transitions. [2024-11-08 17:26:06,612 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 19 transitions, 65 flow [2024-11-08 17:26:06,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 17:26:06,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-08 17:26:06,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 37 transitions. [2024-11-08 17:26:06,629 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5873015873015873 [2024-11-08 17:26:06,632 INFO L175 Difference]: Start difference. First operand has 24 places, 20 transitions, 43 flow. Second operand 3 states and 37 transitions. [2024-11-08 17:26:06,633 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 19 transitions, 65 flow [2024-11-08 17:26:06,637 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 19 transitions, 64 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-08 17:26:06,639 INFO L231 Difference]: Finished difference. Result has 24 places, 19 transitions, 42 flow [2024-11-08 17:26:06,642 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=42, PETRI_PLACES=24, PETRI_TRANSITIONS=19} [2024-11-08 17:26:06,648 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 0 predicate places. [2024-11-08 17:26:06,649 INFO L471 AbstractCegarLoop]: Abstraction has has 24 places, 19 transitions, 42 flow [2024-11-08 17:26:06,649 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 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) [2024-11-08 17:26:06,650 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:26:06,650 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-08 17:26:06,650 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-08 17:26:06,651 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 5 more)] === [2024-11-08 17:26:06,651 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:26:06,652 INFO L85 PathProgramCache]: Analyzing trace with hash 1340633723, now seen corresponding path program 1 times [2024-11-08 17:26:06,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:26:06,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137060526] [2024-11-08 17:26:06,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:26:06,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:26:06,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:26:07,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:26:07,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:26:07,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137060526] [2024-11-08 17:26:07,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2137060526] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:26:07,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:26:07,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 17:26:07,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735803189] [2024-11-08 17:26:07,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:26:07,021 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 17:26:07,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:26:07,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 17:26:07,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 17:26:07,039 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 21 [2024-11-08 17:26:07,040 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 19 transitions, 42 flow. Second operand has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 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) [2024-11-08 17:26:07,040 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:26:07,040 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 21 [2024-11-08 17:26:07,040 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:26:07,182 INFO L124 PetriNetUnfolderBase]: 21/65 cut-off events. [2024-11-08 17:26:07,182 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-08 17:26:07,183 INFO L83 FinitePrefix]: Finished finitePrefix Result has 125 conditions, 65 events. 21/65 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 212 event pairs, 15 based on Foata normal form. 0/61 useless extension candidates. Maximal degree in co-relation 119. Up to 40 conditions per place. [2024-11-08 17:26:07,183 INFO L140 encePairwiseOnDemand]: 16/21 looper letters, 12 selfloop transitions, 4 changer transitions 2/24 dead transitions. [2024-11-08 17:26:07,184 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 24 transitions, 88 flow [2024-11-08 17:26:07,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 17:26:07,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-08 17:26:07,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 51 transitions. [2024-11-08 17:26:07,186 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6071428571428571 [2024-11-08 17:26:07,186 INFO L175 Difference]: Start difference. First operand has 24 places, 19 transitions, 42 flow. Second operand 4 states and 51 transitions. [2024-11-08 17:26:07,187 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 24 transitions, 88 flow [2024-11-08 17:26:07,187 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 24 transitions, 87 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-08 17:26:07,188 INFO L231 Difference]: Finished difference. Result has 25 places, 18 transitions, 47 flow [2024-11-08 17:26:07,188 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=39, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=47, PETRI_PLACES=25, PETRI_TRANSITIONS=18} [2024-11-08 17:26:07,190 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 1 predicate places. [2024-11-08 17:26:07,190 INFO L471 AbstractCegarLoop]: Abstraction has has 25 places, 18 transitions, 47 flow [2024-11-08 17:26:07,192 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 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) [2024-11-08 17:26:07,192 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:26:07,192 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-08 17:26:07,193 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-08 17:26:07,193 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 5 more)] === [2024-11-08 17:26:07,193 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:26:07,196 INFO L85 PathProgramCache]: Analyzing trace with hash 1340633724, now seen corresponding path program 1 times [2024-11-08 17:26:07,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:26:07,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417365803] [2024-11-08 17:26:07,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:26:07,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:26:07,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:26:07,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:26:07,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:26:07,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417365803] [2024-11-08 17:26:07,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1417365803] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:26:07,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:26:07,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 17:26:07,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403911033] [2024-11-08 17:26:07,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:26:07,867 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 17:26:07,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:26:07,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 17:26:07,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 17:26:07,899 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 21 [2024-11-08 17:26:07,899 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 18 transitions, 47 flow. Second operand has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 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) [2024-11-08 17:26:07,900 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:26:07,900 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 21 [2024-11-08 17:26:07,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:26:08,033 INFO L124 PetriNetUnfolderBase]: 21/61 cut-off events. [2024-11-08 17:26:08,033 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-08 17:26:08,034 INFO L83 FinitePrefix]: Finished finitePrefix Result has 134 conditions, 61 events. 21/61 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 193 event pairs, 15 based on Foata normal form. 4/61 useless extension candidates. Maximal degree in co-relation 127. Up to 40 conditions per place. [2024-11-08 17:26:08,035 INFO L140 encePairwiseOnDemand]: 16/21 looper letters, 12 selfloop transitions, 4 changer transitions 2/23 dead transitions. [2024-11-08 17:26:08,035 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 23 transitions, 93 flow [2024-11-08 17:26:08,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 17:26:08,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-08 17:26:08,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 51 transitions. [2024-11-08 17:26:08,039 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6071428571428571 [2024-11-08 17:26:08,039 INFO L175 Difference]: Start difference. First operand has 25 places, 18 transitions, 47 flow. Second operand 4 states and 51 transitions. [2024-11-08 17:26:08,039 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 23 transitions, 93 flow [2024-11-08 17:26:08,040 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 23 transitions, 85 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-08 17:26:08,042 INFO L231 Difference]: Finished difference. Result has 24 places, 17 transitions, 45 flow [2024-11-08 17:26:08,042 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=37, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=45, PETRI_PLACES=24, PETRI_TRANSITIONS=17} [2024-11-08 17:26:08,043 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, 0 predicate places. [2024-11-08 17:26:08,043 INFO L471 AbstractCegarLoop]: Abstraction has has 24 places, 17 transitions, 45 flow [2024-11-08 17:26:08,044 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 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) [2024-11-08 17:26:08,044 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:26:08,044 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-08 17:26:08,044 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-08 17:26:08,045 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 5 more)] === [2024-11-08 17:26:08,045 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:26:08,045 INFO L85 PathProgramCache]: Analyzing trace with hash 1340882197, now seen corresponding path program 1 times [2024-11-08 17:26:08,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:26:08,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714135039] [2024-11-08 17:26:08,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:26:08,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:26:08,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:26:08,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:26:08,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:26:08,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714135039] [2024-11-08 17:26:08,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1714135039] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:26:08,180 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:26:08,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-08 17:26:08,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269026319] [2024-11-08 17:26:08,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:26:08,181 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 17:26:08,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:26:08,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 17:26:08,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 17:26:08,195 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 21 [2024-11-08 17:26:08,195 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 17 transitions, 45 flow. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 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) [2024-11-08 17:26:08,195 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:26:08,196 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 21 [2024-11-08 17:26:08,196 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:26:08,243 INFO L124 PetriNetUnfolderBase]: 21/60 cut-off events. [2024-11-08 17:26:08,243 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-08 17:26:08,244 INFO L83 FinitePrefix]: Finished finitePrefix Result has 133 conditions, 60 events. 21/60 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 182 event pairs, 21 based on Foata normal form. 7/64 useless extension candidates. Maximal degree in co-relation 126. Up to 54 conditions per place. [2024-11-08 17:26:08,244 INFO L140 encePairwiseOnDemand]: 19/21 looper letters, 10 selfloop transitions, 1 changer transitions 1/16 dead transitions. [2024-11-08 17:26:08,244 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 16 transitions, 67 flow [2024-11-08 17:26:08,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 17:26:08,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-08 17:26:08,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 37 transitions. [2024-11-08 17:26:08,246 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5873015873015873 [2024-11-08 17:26:08,246 INFO L175 Difference]: Start difference. First operand has 24 places, 17 transitions, 45 flow. Second operand 3 states and 37 transitions. [2024-11-08 17:26:08,246 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 16 transitions, 67 flow [2024-11-08 17:26:08,246 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 16 transitions, 59 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-08 17:26:08,247 INFO L231 Difference]: Finished difference. Result has 22 places, 15 transitions, 35 flow [2024-11-08 17:26:08,247 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=35, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=35, PETRI_PLACES=22, PETRI_TRANSITIONS=15} [2024-11-08 17:26:08,248 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, -2 predicate places. [2024-11-08 17:26:08,248 INFO L471 AbstractCegarLoop]: Abstraction has has 22 places, 15 transitions, 35 flow [2024-11-08 17:26:08,248 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 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) [2024-11-08 17:26:08,248 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:26:08,248 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:26:08,249 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-08 17:26:08,249 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (and 5 more)] === [2024-11-08 17:26:08,249 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:26:08,249 INFO L85 PathProgramCache]: Analyzing trace with hash -81436623, now seen corresponding path program 1 times [2024-11-08 17:26:08,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:26:08,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730789297] [2024-11-08 17:26:08,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:26:08,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:26:08,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:26:08,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:26:08,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:26:08,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730789297] [2024-11-08 17:26:08,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730789297] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:26:08,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:26:08,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-08 17:26:08,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088593007] [2024-11-08 17:26:08,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:26:08,293 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 17:26:08,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:26:08,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 17:26:08,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 17:26:08,305 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 21 [2024-11-08 17:26:08,306 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 15 transitions, 35 flow. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 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) [2024-11-08 17:26:08,306 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:26:08,306 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 21 [2024-11-08 17:26:08,306 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:26:08,343 INFO L124 PetriNetUnfolderBase]: 18/50 cut-off events. [2024-11-08 17:26:08,343 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-08 17:26:08,344 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104 conditions, 50 events. 18/50 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 139 event pairs, 18 based on Foata normal form. 4/51 useless extension candidates. Maximal degree in co-relation 97. Up to 47 conditions per place. [2024-11-08 17:26:08,344 INFO L140 encePairwiseOnDemand]: 19/21 looper letters, 0 selfloop transitions, 0 changer transitions 14/14 dead transitions. [2024-11-08 17:26:08,344 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 14 transitions, 55 flow [2024-11-08 17:26:08,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 17:26:08,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-08 17:26:08,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 36 transitions. [2024-11-08 17:26:08,348 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5714285714285714 [2024-11-08 17:26:08,349 INFO L175 Difference]: Start difference. First operand has 22 places, 15 transitions, 35 flow. Second operand 3 states and 36 transitions. [2024-11-08 17:26:08,349 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 14 transitions, 55 flow [2024-11-08 17:26:08,349 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 14 transitions, 54 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-08 17:26:08,349 INFO L231 Difference]: Finished difference. Result has 21 places, 0 transitions, 0 flow [2024-11-08 17:26:08,349 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=32, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=21, PETRI_TRANSITIONS=0} [2024-11-08 17:26:08,350 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, -3 predicate places. [2024-11-08 17:26:08,350 INFO L471 AbstractCegarLoop]: Abstraction has has 21 places, 0 transitions, 0 flow [2024-11-08 17:26:08,351 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 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) [2024-11-08 17:26:08,353 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 8 remaining) [2024-11-08 17:26:08,355 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 8 remaining) [2024-11-08 17:26:08,356 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (5 of 8 remaining) [2024-11-08 17:26:08,356 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 8 remaining) [2024-11-08 17:26:08,356 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 8 remaining) [2024-11-08 17:26:08,356 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 8 remaining) [2024-11-08 17:26:08,357 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 8 remaining) [2024-11-08 17:26:08,357 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 8 remaining) [2024-11-08 17:26:08,357 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-08 17:26:08,358 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2024-11-08 17:26:08,365 INFO L239 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-08 17:26:08,369 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-08 17:26:08,375 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.11 05:26:08 BasicIcfg [2024-11-08 17:26:08,376 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-08 17:26:08,377 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-08 17:26:08,377 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-08 17:26:08,379 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-08 17:26:08,379 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 05:26:05" (3/4) ... [2024-11-08 17:26:08,381 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-08 17:26:08,384 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t_fun [2024-11-08 17:26:08,390 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 41 nodes and edges [2024-11-08 17:26:08,391 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2024-11-08 17:26:08,391 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2024-11-08 17:26:08,491 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a318819c-1a87-478f-b812-0fa48d222bca/bin/uautomizer-verify-jihMAELWvX/witness.graphml [2024-11-08 17:26:08,492 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a318819c-1a87-478f-b812-0fa48d222bca/bin/uautomizer-verify-jihMAELWvX/witness.yml [2024-11-08 17:26:08,492 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-08 17:26:08,493 INFO L158 Benchmark]: Toolchain (without parser) took 4701.80ms. Allocated memory was 144.7MB in the beginning and 174.1MB in the end (delta: 29.4MB). Free memory was 97.9MB in the beginning and 57.3MB in the end (delta: 40.6MB). Peak memory consumption was 71.4MB. Max. memory is 16.1GB. [2024-11-08 17:26:08,493 INFO L158 Benchmark]: CDTParser took 0.35ms. Allocated memory is still 115.3MB. Free memory was 89.8MB in the beginning and 89.8MB in the end (delta: 23.0kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-08 17:26:08,496 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1054.42ms. Allocated memory is still 144.7MB. Free memory was 97.9MB in the beginning and 103.4MB in the end (delta: -5.5MB). Peak memory consumption was 28.0MB. Max. memory is 16.1GB. [2024-11-08 17:26:08,497 INFO L158 Benchmark]: Boogie Procedure Inliner took 87.75ms. Allocated memory is still 144.7MB. Free memory was 103.4MB in the beginning and 101.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-08 17:26:08,497 INFO L158 Benchmark]: Boogie Preprocessor took 69.22ms. Allocated memory is still 144.7MB. Free memory was 101.3MB in the beginning and 99.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-08 17:26:08,497 INFO L158 Benchmark]: RCFGBuilder took 721.13ms. Allocated memory is still 144.7MB. Free memory was 99.3MB in the beginning and 72.0MB in the end (delta: 27.3MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2024-11-08 17:26:08,498 INFO L158 Benchmark]: TraceAbstraction took 2638.79ms. Allocated memory was 144.7MB in the beginning and 174.1MB in the end (delta: 29.4MB). Free memory was 71.3MB in the beginning and 62.6MB in the end (delta: 8.8MB). Peak memory consumption was 41.3MB. Max. memory is 16.1GB. [2024-11-08 17:26:08,498 INFO L158 Benchmark]: Witness Printer took 115.01ms. Allocated memory is still 174.1MB. Free memory was 61.5MB in the beginning and 57.3MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-08 17:26:08,504 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35ms. Allocated memory is still 115.3MB. Free memory was 89.8MB in the beginning and 89.8MB in the end (delta: 23.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1054.42ms. Allocated memory is still 144.7MB. Free memory was 97.9MB in the beginning and 103.4MB in the end (delta: -5.5MB). Peak memory consumption was 28.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 87.75ms. Allocated memory is still 144.7MB. Free memory was 103.4MB in the beginning and 101.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 69.22ms. Allocated memory is still 144.7MB. Free memory was 101.3MB in the beginning and 99.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 721.13ms. Allocated memory is still 144.7MB. Free memory was 99.3MB in the beginning and 72.0MB in the end (delta: 27.3MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * TraceAbstraction took 2638.79ms. Allocated memory was 144.7MB in the beginning and 174.1MB in the end (delta: 29.4MB). Free memory was 71.3MB in the beginning and 62.6MB in the end (delta: 8.8MB). Peak memory consumption was 41.3MB. Max. memory is 16.1GB. * Witness Printer took 115.01ms. Allocated memory is still 174.1MB. Free memory was 61.5MB in the beginning and 57.3MB 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: 1001]: 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 - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 32 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: 2.5s, OverallIterations: 5, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 101 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 65 mSDsluCounter, 9 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 139 IncrementalHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 9 mSDtfsCounter, 139 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=47occurred in iteration=2, InterpolantAutomatonStates: 17, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 33 NumberOfCodeBlocks, 33 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 28 ConstructedInterpolants, 0 QuantifiedInterpolants, 328 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! [2024-11-08 17:26:08,541 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a318819c-1a87-478f-b812-0fa48d222bca/bin/uautomizer-verify-jihMAELWvX/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