./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memcleanup.prp --file ../../sv-benchmarks/c/forester-heap/dll-circular-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (memcleanup) Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98a1dfd8-d2eb-44b4-a0fd-c8de609b7aad/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98a1dfd8-d2eb-44b4-a0fd-c8de609b7aad/bin/uautomizer-verify-VRDe98Ueme/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98a1dfd8-d2eb-44b4-a0fd-c8de609b7aad/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98a1dfd8-d2eb-44b4-a0fd-c8de609b7aad/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/forester-heap/dll-circular-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98a1dfd8-d2eb-44b4-a0fd-c8de609b7aad/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-MemCleanup-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98a1dfd8-d2eb-44b4-a0fd-c8de609b7aad/bin/uautomizer-verify-VRDe98Ueme --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-memcleanup) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4b74df92940ca0e86c8c02c3eca1e89fb6c9c9c1248a25cd764acf39f7727180 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 11:54:46,357 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 11:54:46,446 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98a1dfd8-d2eb-44b4-a0fd-c8de609b7aad/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-MemCleanup-32bit-Automizer_Default.epf [2023-11-26 11:54:46,452 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 11:54:46,453 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 11:54:46,480 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 11:54:46,481 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 11:54:46,482 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 11:54:46,483 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 11:54:46,484 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 11:54:46,484 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 11:54:46,485 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 11:54:46,486 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 11:54:46,487 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 11:54:46,487 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 11:54:46,488 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 11:54:46,489 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 11:54:46,489 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 11:54:46,490 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 11:54:46,491 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 11:54:46,491 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 11:54:46,492 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 11:54:46,493 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-26 11:54:46,494 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-26 11:54:46,494 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 11:54:46,495 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 11:54:46,496 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-26 11:54:46,496 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-26 11:54:46,497 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 11:54:46,497 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 11:54:46,498 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 11:54:46,499 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 11:54:46,499 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 11:54:46,500 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 11:54:46,500 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 11:54:46,500 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:54:46,501 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 11:54:46,501 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 11:54:46,501 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 11:54:46,501 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 11:54:46,502 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 11:54:46,502 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 11:54:46,502 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 11:54:46,503 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 11:54:46,503 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_98a1dfd8-d2eb-44b4-a0fd-c8de609b7aad/bin/uautomizer-verify-VRDe98Ueme/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98a1dfd8-d2eb-44b4-a0fd-c8de609b7aad/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4b74df92940ca0e86c8c02c3eca1e89fb6c9c9c1248a25cd764acf39f7727180 [2023-11-26 11:54:46,827 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 11:54:46,861 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 11:54:46,864 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 11:54:46,865 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 11:54:46,865 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 11:54:46,866 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98a1dfd8-d2eb-44b4-a0fd-c8de609b7aad/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/forester-heap/dll-circular-1.i [2023-11-26 11:54:50,061 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 11:54:50,405 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 11:54:50,405 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98a1dfd8-d2eb-44b4-a0fd-c8de609b7aad/sv-benchmarks/c/forester-heap/dll-circular-1.i [2023-11-26 11:54:50,428 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98a1dfd8-d2eb-44b4-a0fd-c8de609b7aad/bin/uautomizer-verify-VRDe98Ueme/data/d4a0827ec/fed36d105fa74ff9a3880024c1a96f61/FLAGe96b14311 [2023-11-26 11:54:50,441 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98a1dfd8-d2eb-44b4-a0fd-c8de609b7aad/bin/uautomizer-verify-VRDe98Ueme/data/d4a0827ec/fed36d105fa74ff9a3880024c1a96f61 [2023-11-26 11:54:50,443 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 11:54:50,445 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 11:54:50,446 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 11:54:50,446 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 11:54:50,452 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 11:54:50,453 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:54:50" (1/1) ... [2023-11-26 11:54:50,454 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@480cf359 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:54:50, skipping insertion in model container [2023-11-26 11:54:50,454 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:54:50" (1/1) ... [2023-11-26 11:54:50,510 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 11:54:50,884 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:54:50,897 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 11:54:50,948 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:54:50,981 INFO L206 MainTranslator]: Completed translation [2023-11-26 11:54:50,982 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:54:50 WrapperNode [2023-11-26 11:54:50,982 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 11:54:50,983 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 11:54:50,983 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 11:54:50,983 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 11:54:50,989 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:54:50" (1/1) ... [2023-11-26 11:54:51,003 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:54:50" (1/1) ... [2023-11-26 11:54:51,043 INFO L138 Inliner]: procedures = 119, calls = 33, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 117 [2023-11-26 11:54:51,043 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 11:54:51,044 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 11:54:51,044 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 11:54:51,044 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 11:54:51,056 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:54:50" (1/1) ... [2023-11-26 11:54:51,057 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:54:50" (1/1) ... [2023-11-26 11:54:51,071 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:54:50" (1/1) ... [2023-11-26 11:54:51,088 INFO L175 MemorySlicer]: Split 22 memory accesses to 2 slices as follows [2, 20]. 91 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 7 writes are split as follows [0, 7]. [2023-11-26 11:54:51,089 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:54:50" (1/1) ... [2023-11-26 11:54:51,090 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:54:50" (1/1) ... [2023-11-26 11:54:51,098 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:54:50" (1/1) ... [2023-11-26 11:54:51,116 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:54:50" (1/1) ... [2023-11-26 11:54:51,118 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:54:50" (1/1) ... [2023-11-26 11:54:51,130 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:54:50" (1/1) ... [2023-11-26 11:54:51,134 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 11:54:51,135 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 11:54:51,135 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 11:54:51,135 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 11:54:51,136 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:54:50" (1/1) ... [2023-11-26 11:54:51,149 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:54:51,166 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98a1dfd8-d2eb-44b4-a0fd-c8de609b7aad/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:54:51,182 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98a1dfd8-d2eb-44b4-a0fd-c8de609b7aad/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 11:54:51,201 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98a1dfd8-d2eb-44b4-a0fd-c8de609b7aad/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 11:54:51,226 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-11-26 11:54:51,226 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-11-26 11:54:51,227 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-26 11:54:51,227 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-26 11:54:51,227 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-26 11:54:51,227 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-26 11:54:51,227 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-26 11:54:51,227 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 11:54:51,227 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2023-11-26 11:54:51,228 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2023-11-26 11:54:51,228 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2023-11-26 11:54:51,228 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2023-11-26 11:54:51,228 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-26 11:54:51,228 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-26 11:54:51,229 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-26 11:54:51,229 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 11:54:51,229 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 11:54:51,352 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 11:54:51,354 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 11:54:51,563 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 11:54:51,591 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 11:54:51,591 INFO L309 CfgBuilder]: Removed 9 assume(true) statements. [2023-11-26 11:54:51,592 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:54:51 BoogieIcfgContainer [2023-11-26 11:54:51,592 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 11:54:51,595 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 11:54:51,595 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 11:54:51,599 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 11:54:51,599 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 11:54:50" (1/3) ... [2023-11-26 11:54:51,600 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@636ebade and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:54:51, skipping insertion in model container [2023-11-26 11:54:51,601 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:54:50" (2/3) ... [2023-11-26 11:54:51,601 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@636ebade and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:54:51, skipping insertion in model container [2023-11-26 11:54:51,601 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:54:51" (3/3) ... [2023-11-26 11:54:51,603 INFO L112 eAbstractionObserver]: Analyzing ICFG dll-circular-1.i [2023-11-26 11:54:51,626 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 11:54:51,627 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-26 11:54:51,673 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 11:54:51,681 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;@7f559f06, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 11:54:51,681 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-26 11:54:51,700 INFO L276 IsEmpty]: Start isEmpty. Operand has 37 states, 30 states have (on average 1.7333333333333334) internal successors, (52), 32 states have internal predecessors, (52), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-26 11:54:51,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-26 11:54:51,708 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:54:51,709 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:54:51,709 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-26 11:54:51,714 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:54:51,715 INFO L85 PathProgramCache]: Analyzing trace with hash -1853061382, now seen corresponding path program 1 times [2023-11-26 11:54:51,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:54:51,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470844061] [2023-11-26 11:54:51,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:54:51,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:54:51,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:54:51,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:54:51,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:54:51,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470844061] [2023-11-26 11:54:51,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1470844061] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:54:51,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:54:51,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:54:51,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284993102] [2023-11-26 11:54:51,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:54:51,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-26 11:54:51,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:54:51,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-26 11:54:51,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-26 11:54:51,992 INFO L87 Difference]: Start difference. First operand has 37 states, 30 states have (on average 1.7333333333333334) internal successors, (52), 32 states have internal predecessors, (52), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:54:52,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:54:52,017 INFO L93 Difference]: Finished difference Result 32 states and 40 transitions. [2023-11-26 11:54:52,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-26 11:54:52,020 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-11-26 11:54:52,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:54:52,031 INFO L225 Difference]: With dead ends: 32 [2023-11-26 11:54:52,031 INFO L226 Difference]: Without dead ends: 31 [2023-11-26 11:54:52,033 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-26 11:54:52,037 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 11:54:52,041 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 38 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 11:54:52,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2023-11-26 11:54:52,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2023-11-26 11:54:52,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 26 states have (on average 1.3846153846153846) internal successors, (36), 29 states have internal predecessors, (36), 3 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:54:52,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 39 transitions. [2023-11-26 11:54:52,077 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 39 transitions. Word has length 7 [2023-11-26 11:54:52,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:54:52,078 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 39 transitions. [2023-11-26 11:54:52,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:54:52,079 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 39 transitions. [2023-11-26 11:54:52,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-26 11:54:52,079 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:54:52,080 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:54:52,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-26 11:54:52,080 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-26 11:54:52,081 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:54:52,081 INFO L85 PathProgramCache]: Analyzing trace with hash 1966705972, now seen corresponding path program 1 times [2023-11-26 11:54:52,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:54:52,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757362238] [2023-11-26 11:54:52,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:54:52,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:54:52,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:54:52,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:54:52,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:54:52,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757362238] [2023-11-26 11:54:52,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1757362238] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:54:52,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:54:52,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:54:52,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326023724] [2023-11-26 11:54:52,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:54:52,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:54:52,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:54:52,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:54:52,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:54:52,655 INFO L87 Difference]: Start difference. First operand 31 states and 39 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:54:52,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:54:52,757 INFO L93 Difference]: Finished difference Result 44 states and 55 transitions. [2023-11-26 11:54:52,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 11:54:52,758 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-11-26 11:54:52,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:54:52,761 INFO L225 Difference]: With dead ends: 44 [2023-11-26 11:54:52,761 INFO L226 Difference]: Without dead ends: 44 [2023-11-26 11:54:52,764 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:54:52,766 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 22 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 11:54:52,766 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 62 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 11:54:52,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2023-11-26 11:54:52,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 34. [2023-11-26 11:54:52,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 30 states have (on average 1.3333333333333333) internal successors, (40), 32 states have internal predecessors, (40), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:54:52,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 42 transitions. [2023-11-26 11:54:52,778 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 42 transitions. Word has length 8 [2023-11-26 11:54:52,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:54:52,778 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 42 transitions. [2023-11-26 11:54:52,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:54:52,778 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 42 transitions. [2023-11-26 11:54:52,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-26 11:54:52,780 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:54:52,780 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:54:52,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-26 11:54:52,781 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-26 11:54:52,782 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:54:52,783 INFO L85 PathProgramCache]: Analyzing trace with hash 792471613, now seen corresponding path program 1 times [2023-11-26 11:54:52,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:54:52,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250196481] [2023-11-26 11:54:52,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:54:52,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:54:52,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:54:52,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:54:52,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:54:52,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250196481] [2023-11-26 11:54:52,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250196481] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:54:52,901 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:54:52,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:54:52,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034402130] [2023-11-26 11:54:52,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:54:52,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:54:52,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:54:52,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:54:52,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:54:52,910 INFO L87 Difference]: Start difference. First operand 34 states and 42 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:54:52,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:54:52,934 INFO L93 Difference]: Finished difference Result 59 states and 73 transitions. [2023-11-26 11:54:52,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:54:52,935 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2023-11-26 11:54:52,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:54:52,937 INFO L225 Difference]: With dead ends: 59 [2023-11-26 11:54:52,937 INFO L226 Difference]: Without dead ends: 59 [2023-11-26 11:54:52,938 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:54:52,939 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 25 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 11:54:52,940 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 63 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 11:54:52,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2023-11-26 11:54:52,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 41. [2023-11-26 11:54:52,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 37 states have (on average 1.3243243243243243) internal successors, (49), 39 states have internal predecessors, (49), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:54:52,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 51 transitions. [2023-11-26 11:54:52,947 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 51 transitions. Word has length 11 [2023-11-26 11:54:52,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:54:52,948 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 51 transitions. [2023-11-26 11:54:52,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:54:52,948 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 51 transitions. [2023-11-26 11:54:52,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-26 11:54:52,949 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:54:52,949 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:54:52,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-26 11:54:52,950 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-26 11:54:52,950 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:54:52,950 INFO L85 PathProgramCache]: Analyzing trace with hash 389452681, now seen corresponding path program 1 times [2023-11-26 11:54:52,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:54:52,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673376196] [2023-11-26 11:54:52,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:54:52,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:54:52,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:54:53,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:54:53,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:54:53,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673376196] [2023-11-26 11:54:53,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673376196] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:54:53,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:54:53,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 11:54:53,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104472783] [2023-11-26 11:54:53,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:54:53,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 11:54:53,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:54:53,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 11:54:53,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-26 11:54:53,314 INFO L87 Difference]: Start difference. First operand 41 states and 51 transitions. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 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) [2023-11-26 11:54:53,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:54:53,539 INFO L93 Difference]: Finished difference Result 67 states and 84 transitions. [2023-11-26 11:54:53,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-26 11:54:53,540 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 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) Word has length 13 [2023-11-26 11:54:53,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:54:53,542 INFO L225 Difference]: With dead ends: 67 [2023-11-26 11:54:53,542 INFO L226 Difference]: Without dead ends: 65 [2023-11-26 11:54:53,545 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-26 11:54:53,556 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 33 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 11:54:53,558 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 122 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 11:54:53,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2023-11-26 11:54:53,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 52. [2023-11-26 11:54:53,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 48 states have (on average 1.3125) internal successors, (63), 50 states have internal predecessors, (63), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:54:53,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 65 transitions. [2023-11-26 11:54:53,575 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 65 transitions. Word has length 13 [2023-11-26 11:54:53,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:54:53,576 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 65 transitions. [2023-11-26 11:54:53,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 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) [2023-11-26 11:54:53,577 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 65 transitions. [2023-11-26 11:54:53,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-26 11:54:53,579 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:54:53,579 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:54:53,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-26 11:54:53,580 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-26 11:54:53,582 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:54:53,582 INFO L85 PathProgramCache]: Analyzing trace with hash 194028962, now seen corresponding path program 1 times [2023-11-26 11:54:53,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:54:53,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140850987] [2023-11-26 11:54:53,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:54:53,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:54:53,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:54:54,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:54:54,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:54:54,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140850987] [2023-11-26 11:54:54,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140850987] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:54:54,149 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:54:54,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-26 11:54:54,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541363349] [2023-11-26 11:54:54,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:54:54,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-26 11:54:54,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:54:54,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-26 11:54:54,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-26 11:54:54,153 INFO L87 Difference]: Start difference. First operand 52 states and 65 transitions. Second operand has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 6 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:54:54,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:54:54,480 INFO L93 Difference]: Finished difference Result 60 states and 72 transitions. [2023-11-26 11:54:54,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-26 11:54:54,480 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 6 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2023-11-26 11:54:54,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:54:54,481 INFO L225 Difference]: With dead ends: 60 [2023-11-26 11:54:54,482 INFO L226 Difference]: Without dead ends: 60 [2023-11-26 11:54:54,482 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2023-11-26 11:54:54,483 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 27 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-26 11:54:54,483 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 124 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-26 11:54:54,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2023-11-26 11:54:54,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 54. [2023-11-26 11:54:54,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 50 states have (on average 1.28) internal successors, (64), 52 states have internal predecessors, (64), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:54:54,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 66 transitions. [2023-11-26 11:54:54,490 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 66 transitions. Word has length 14 [2023-11-26 11:54:54,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:54:54,490 INFO L495 AbstractCegarLoop]: Abstraction has 54 states and 66 transitions. [2023-11-26 11:54:54,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 6 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:54:54,491 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 66 transitions. [2023-11-26 11:54:54,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-26 11:54:54,492 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:54:54,492 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:54:54,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-26 11:54:54,493 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-26 11:54:54,493 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:54:54,493 INFO L85 PathProgramCache]: Analyzing trace with hash 192181920, now seen corresponding path program 1 times [2023-11-26 11:54:54,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:54:54,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220369242] [2023-11-26 11:54:54,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:54:54,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:54:54,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 11:54:54,524 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 11:54:54,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 11:54:54,573 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-26 11:54:54,573 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-26 11:54:54,576 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK (1 of 2 remaining) [2023-11-26 11:54:54,581 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (0 of 2 remaining) [2023-11-26 11:54:54,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-26 11:54:54,586 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2023-11-26 11:54:54,591 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-26 11:54:54,611 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem10 could not be translated [2023-11-26 11:54:54,612 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem9 [2023-11-26 11:54:54,612 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short14 could not be translated [2023-11-26 11:54:54,613 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem12 could not be translated [2023-11-26 11:54:54,613 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem11 [2023-11-26 11:54:54,613 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short14 could not be translated [2023-11-26 11:54:54,613 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem9 [2023-11-26 11:54:54,614 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem13 could not be translated [2023-11-26 11:54:54,614 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem10 could not be translated [2023-11-26 11:54:54,621 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 11:54:54 BoogieIcfgContainer [2023-11-26 11:54:54,621 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-26 11:54:54,622 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-26 11:54:54,622 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-26 11:54:54,622 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-26 11:54:54,623 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:54:51" (3/4) ... [2023-11-26 11:54:54,624 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2023-11-26 11:54:54,629 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem10 could not be translated [2023-11-26 11:54:54,629 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short14 could not be translated [2023-11-26 11:54:54,629 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem9 [2023-11-26 11:54:54,630 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem12 could not be translated [2023-11-26 11:54:54,630 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem13 could not be translated [2023-11-26 11:54:54,630 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem9 [2023-11-26 11:54:54,630 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable #t~mem11 [2023-11-26 11:54:54,631 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~short14 could not be translated [2023-11-26 11:54:54,631 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem10 could not be translated [2023-11-26 11:54:54,665 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98a1dfd8-d2eb-44b4-a0fd-c8de609b7aad/bin/uautomizer-verify-VRDe98Ueme/witness.graphml [2023-11-26 11:54:54,665 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-26 11:54:54,666 INFO L158 Benchmark]: Toolchain (without parser) took 4221.13ms. Allocated memory was 151.0MB in the beginning and 190.8MB in the end (delta: 39.8MB). Free memory was 118.6MB in the beginning and 94.2MB in the end (delta: 24.4MB). Peak memory consumption was 65.7MB. Max. memory is 16.1GB. [2023-11-26 11:54:54,666 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 109.1MB. Free memory is still 60.0MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-26 11:54:54,667 INFO L158 Benchmark]: CACSL2BoogieTranslator took 535.91ms. Allocated memory is still 151.0MB. Free memory was 118.6MB in the beginning and 100.9MB in the end (delta: 17.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-11-26 11:54:54,667 INFO L158 Benchmark]: Boogie Procedure Inliner took 60.70ms. Allocated memory is still 151.0MB. Free memory was 100.9MB in the beginning and 98.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-26 11:54:54,667 INFO L158 Benchmark]: Boogie Preprocessor took 90.05ms. Allocated memory is still 151.0MB. Free memory was 98.8MB in the beginning and 96.3MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-26 11:54:54,668 INFO L158 Benchmark]: RCFGBuilder took 457.19ms. Allocated memory is still 151.0MB. Free memory was 96.3MB in the beginning and 79.9MB in the end (delta: 16.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-11-26 11:54:54,668 INFO L158 Benchmark]: TraceAbstraction took 3026.31ms. Allocated memory was 151.0MB in the beginning and 190.8MB in the end (delta: 39.8MB). Free memory was 79.4MB in the beginning and 96.2MB in the end (delta: -16.8MB). Peak memory consumption was 25.9MB. Max. memory is 16.1GB. [2023-11-26 11:54:54,669 INFO L158 Benchmark]: Witness Printer took 43.34ms. Allocated memory is still 190.8MB. Free memory was 96.2MB in the beginning and 94.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-26 11:54:54,671 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 109.1MB. Free memory is still 60.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 535.91ms. Allocated memory is still 151.0MB. Free memory was 118.6MB in the beginning and 100.9MB in the end (delta: 17.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 60.70ms. Allocated memory is still 151.0MB. Free memory was 100.9MB in the beginning and 98.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 90.05ms. Allocated memory is still 151.0MB. Free memory was 98.8MB in the beginning and 96.3MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 457.19ms. Allocated memory is still 151.0MB. Free memory was 96.3MB in the beginning and 79.9MB in the end (delta: 16.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 3026.31ms. Allocated memory was 151.0MB in the beginning and 190.8MB in the end (delta: 39.8MB). Free memory was 79.4MB in the beginning and 96.2MB in the end (delta: -16.8MB). Peak memory consumption was 25.9MB. Max. memory is 16.1GB. * Witness Printer took 43.34ms. Allocated memory is still 190.8MB. Free memory was 96.2MB in the beginning and 94.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem10 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem9 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short14 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem12 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem11 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short14 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem9 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem13 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem10 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem10 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short14 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem9 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem12 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem13 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem9 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable #t~mem11 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~short14 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem10 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 985]: not all allocated memory was freed not all allocated memory was freed We found a FailurePath: [L997] SLL* head = malloc(sizeof(SLL)); [L998] head->next = head [L999] head->data = 0 [L1001] SLL* x = head; [L1002] int state = 1; VAL [head={-1:0}, state=1, x={-1:0}] [L1005] COND FALSE !(__VERIFIER_nondet_int()) [L1027] x->data = state [L1029] EXPR head->next [L1029] x = head->next [L1030] COND FALSE !(!(((void*)0) != x)) VAL [head={-1:0}, state=1, x={-1:0}] [L1032] EXPR x->data [L1032] COND TRUE x->data != 0 [L1034] EXPR x->next [L1034] EXPR x->next->data [L1034] EXPR x->next->data != 0 && x->data > x->next->data VAL [head={-1:0}, state=1, x={-1:0}] [L1034] EXPR x->next->data != 0 && x->data > x->next->data [L1034] EXPR x->data [L1034] EXPR x->next [L1034] EXPR x->next->data [L1034] EXPR x->next->data != 0 && x->data > x->next->data VAL [head={-1:0}, state=1, x={-1:0}] [L1034] COND TRUE !(x->next->data != 0 && x->data > x->next->data) [L1034] CALL reach_error() [L985] COND FALSE !(0) [L985] __assert_fail ("0", "dll-circular-1.c", 14, __extension__ __PRETTY_FUNCTION__) - UnprovableResult [Line: 994]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 37 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 2.9s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 107 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 107 mSDsluCounter, 409 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 261 mSDsCounter, 16 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 227 IncrementalHoareTripleChecker+Invalid, 243 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 16 mSolverCounterUnsat, 148 mSDtfsCounter, 227 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=54occurred in iteration=5, InterpolantAutomatonStates: 23, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 47 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 67 NumberOfCodeBlocks, 67 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 48 ConstructedInterpolants, 0 QuantifiedInterpolants, 445 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 RESULT: Ultimate proved your program to be incorrect! [2023-11-26 11:54:54,698 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98a1dfd8-d2eb-44b4-a0fd-c8de609b7aad/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-memcleanup)