./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memcleanup.prp --file ../../sv-benchmarks/c/heap-manipulation/sll_to_dll_rev-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_bf8797f6-3917-4af0-ac8e-a0468439d8d9/bin/uautomizer-verify-NlZe1sFDwI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8797f6-3917-4af0-ac8e-a0468439d8d9/bin/uautomizer-verify-NlZe1sFDwI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8797f6-3917-4af0-ac8e-a0468439d8d9/bin/uautomizer-verify-NlZe1sFDwI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8797f6-3917-4af0-ac8e-a0468439d8d9/bin/uautomizer-verify-NlZe1sFDwI/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/heap-manipulation/sll_to_dll_rev-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8797f6-3917-4af0-ac8e-a0468439d8d9/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-MemCleanup-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8797f6-3917-4af0-ac8e-a0468439d8d9/bin/uautomizer-verify-NlZe1sFDwI --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-memcleanup) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f8d14145608efc0a8f321a178564faff63399ecbab28641c0c2971fec318068f --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 21:28:32,919 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 21:28:33,011 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8797f6-3917-4af0-ac8e-a0468439d8d9/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-MemCleanup-32bit-Automizer_Default.epf [2023-11-24 21:28:33,017 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 21:28:33,018 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 21:28:33,043 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 21:28:33,043 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 21:28:33,044 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 21:28:33,045 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-24 21:28:33,045 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-24 21:28:33,046 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 21:28:33,046 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 21:28:33,047 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-24 21:28:33,048 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-24 21:28:33,048 INFO L153 SettingsManager]: * Use SBE=true [2023-11-24 21:28:33,049 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 21:28:33,049 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-24 21:28:33,050 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-24 21:28:33,050 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 21:28:33,050 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-24 21:28:33,051 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 21:28:33,052 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-24 21:28:33,052 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-24 21:28:33,052 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-24 21:28:33,053 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 21:28:33,053 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-24 21:28:33,054 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-24 21:28:33,054 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-24 21:28:33,054 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-24 21:28:33,055 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-24 21:28:33,055 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 21:28:33,056 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 21:28:33,056 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-24 21:28:33,056 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 21:28:33,056 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 21:28:33,057 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 21:28:33,057 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 21:28:33,057 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 21:28:33,057 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-24 21:28:33,057 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 21:28:33,058 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 21:28:33,058 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-24 21:28:33,058 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-24 21:28:33,058 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 21:28:33,059 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_bf8797f6-3917-4af0-ac8e-a0468439d8d9/bin/uautomizer-verify-NlZe1sFDwI/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8797f6-3917-4af0-ac8e-a0468439d8d9/bin/uautomizer-verify-NlZe1sFDwI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f8d14145608efc0a8f321a178564faff63399ecbab28641c0c2971fec318068f [2023-11-24 21:28:33,323 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 21:28:33,345 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 21:28:33,348 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 21:28:33,349 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 21:28:33,350 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 21:28:33,351 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8797f6-3917-4af0-ac8e-a0468439d8d9/bin/uautomizer-verify-NlZe1sFDwI/../../sv-benchmarks/c/heap-manipulation/sll_to_dll_rev-1.i [2023-11-24 21:28:36,448 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 21:28:36,712 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 21:28:36,713 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8797f6-3917-4af0-ac8e-a0468439d8d9/sv-benchmarks/c/heap-manipulation/sll_to_dll_rev-1.i [2023-11-24 21:28:36,731 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8797f6-3917-4af0-ac8e-a0468439d8d9/bin/uautomizer-verify-NlZe1sFDwI/data/53134cdcf/053e0f20eb1b40f39a92add4771d17b6/FLAGa1c5acf46 [2023-11-24 21:28:36,749 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8797f6-3917-4af0-ac8e-a0468439d8d9/bin/uautomizer-verify-NlZe1sFDwI/data/53134cdcf/053e0f20eb1b40f39a92add4771d17b6 [2023-11-24 21:28:36,753 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 21:28:36,755 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 21:28:36,757 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 21:28:36,757 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 21:28:36,763 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 21:28:36,764 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 09:28:36" (1/1) ... [2023-11-24 21:28:36,765 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@400d77e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:28:36, skipping insertion in model container [2023-11-24 21:28:36,765 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 09:28:36" (1/1) ... [2023-11-24 21:28:36,847 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 21:28:37,253 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 21:28:37,267 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 21:28:37,361 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 21:28:37,407 INFO L206 MainTranslator]: Completed translation [2023-11-24 21:28:37,408 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:28:37 WrapperNode [2023-11-24 21:28:37,408 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 21:28:37,410 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 21:28:37,410 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 21:28:37,411 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 21:28:37,419 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:28:37" (1/1) ... [2023-11-24 21:28:37,458 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:28:37" (1/1) ... [2023-11-24 21:28:37,492 INFO L138 Inliner]: procedures = 129, calls = 80, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 212 [2023-11-24 21:28:37,492 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 21:28:37,493 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 21:28:37,493 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 21:28:37,493 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 21:28:37,506 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:28:37" (1/1) ... [2023-11-24 21:28:37,506 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:28:37" (1/1) ... [2023-11-24 21:28:37,512 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:28:37" (1/1) ... [2023-11-24 21:28:37,568 INFO L175 MemorySlicer]: Split 42 memory accesses to 5 slices as follows [2, 8, 6, 8, 18]. 43 percent of accesses are in the largest equivalence class. The 3 initializations are split as follows [2, 0, 1, 0, 0]. The 10 writes are split as follows [0, 1, 1, 1, 7]. [2023-11-24 21:28:37,569 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:28:37" (1/1) ... [2023-11-24 21:28:37,570 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:28:37" (1/1) ... [2023-11-24 21:28:37,586 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:28:37" (1/1) ... [2023-11-24 21:28:37,597 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:28:37" (1/1) ... [2023-11-24 21:28:37,600 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:28:37" (1/1) ... [2023-11-24 21:28:37,602 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:28:37" (1/1) ... [2023-11-24 21:28:37,619 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 21:28:37,620 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 21:28:37,621 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 21:28:37,622 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 21:28:37,623 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:28:37" (1/1) ... [2023-11-24 21:28:37,628 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 21:28:37,642 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8797f6-3917-4af0-ac8e-a0468439d8d9/bin/uautomizer-verify-NlZe1sFDwI/z3 [2023-11-24 21:28:37,658 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8797f6-3917-4af0-ac8e-a0468439d8d9/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-24 21:28:37,679 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8797f6-3917-4af0-ac8e-a0468439d8d9/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-24 21:28:37,712 INFO L130 BoogieDeclarations]: Found specification of procedure fail [2023-11-24 21:28:37,713 INFO L138 BoogieDeclarations]: Found implementation of procedure fail [2023-11-24 21:28:37,713 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-24 21:28:37,713 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 21:28:37,713 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-24 21:28:37,713 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2023-11-24 21:28:37,714 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2023-11-24 21:28:37,714 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2023-11-24 21:28:37,714 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2023-11-24 21:28:37,716 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2023-11-24 21:28:37,716 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2023-11-24 21:28:37,717 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2023-11-24 21:28:37,717 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2023-11-24 21:28:37,717 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2023-11-24 21:28:37,717 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2023-11-24 21:28:37,717 INFO L130 BoogieDeclarations]: Found specification of procedure check_seq_prev [2023-11-24 21:28:37,718 INFO L138 BoogieDeclarations]: Found implementation of procedure check_seq_prev [2023-11-24 21:28:37,718 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-24 21:28:37,718 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2023-11-24 21:28:37,719 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2023-11-24 21:28:37,719 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2023-11-24 21:28:37,719 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2023-11-24 21:28:37,719 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2023-11-24 21:28:37,719 INFO L130 BoogieDeclarations]: Found specification of procedure chain_node [2023-11-24 21:28:37,720 INFO L138 BoogieDeclarations]: Found implementation of procedure chain_node [2023-11-24 21:28:37,721 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-24 21:28:37,721 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-24 21:28:37,721 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-24 21:28:37,721 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-24 21:28:37,722 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-24 21:28:37,722 INFO L130 BoogieDeclarations]: Found specification of procedure check_seq_next [2023-11-24 21:28:37,723 INFO L138 BoogieDeclarations]: Found implementation of procedure check_seq_next [2023-11-24 21:28:37,723 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 21:28:37,723 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 21:28:37,968 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 21:28:37,971 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 21:28:38,493 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 21:28:38,555 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 21:28:38,555 INFO L309 CfgBuilder]: Removed 33 assume(true) statements. [2023-11-24 21:28:38,556 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 09:28:38 BoogieIcfgContainer [2023-11-24 21:28:38,556 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 21:28:38,561 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 21:28:38,561 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 21:28:38,565 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 21:28:38,565 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 09:28:36" (1/3) ... [2023-11-24 21:28:38,566 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@182c4f8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 09:28:38, skipping insertion in model container [2023-11-24 21:28:38,566 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:28:37" (2/3) ... [2023-11-24 21:28:38,567 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@182c4f8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 09:28:38, skipping insertion in model container [2023-11-24 21:28:38,568 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 09:28:38" (3/3) ... [2023-11-24 21:28:38,569 INFO L112 eAbstractionObserver]: Analyzing ICFG sll_to_dll_rev-1.i [2023-11-24 21:28:38,589 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 21:28:38,589 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-24 21:28:38,649 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-24 21:28:38,657 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;@1e57933e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 21:28:38,657 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-24 21:28:38,662 INFO L276 IsEmpty]: Start isEmpty. Operand has 95 states, 73 states have (on average 1.726027397260274) internal successors, (126), 82 states have internal predecessors, (126), 17 states have call successors, (17), 4 states have call predecessors, (17), 4 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2023-11-24 21:28:38,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-24 21:28:38,671 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:28:38,672 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:28:38,672 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting failErr0ASSERT_VIOLATIONMEMORY_LEAK === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-24 21:28:38,677 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:28:38,678 INFO L85 PathProgramCache]: Analyzing trace with hash 1521129090, now seen corresponding path program 1 times [2023-11-24 21:28:38,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:28:38,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069599451] [2023-11-24 21:28:38,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:28:38,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:28:38,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:28:38,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:28:38,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:28:38,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069599451] [2023-11-24 21:28:38,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2069599451] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:28:38,884 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:28:38,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 21:28:38,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825523944] [2023-11-24 21:28:38,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:28:38,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-24 21:28:38,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:28:38,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-24 21:28:38,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-24 21:28:38,927 INFO L87 Difference]: Start difference. First operand has 95 states, 73 states have (on average 1.726027397260274) internal successors, (126), 82 states have internal predecessors, (126), 17 states have call successors, (17), 4 states have call predecessors, (17), 4 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) Second operand has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 1 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) [2023-11-24 21:28:38,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:28:38,968 INFO L93 Difference]: Finished difference Result 92 states and 113 transitions. [2023-11-24 21:28:38,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-24 21:28:38,971 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 1 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) Word has length 16 [2023-11-24 21:28:38,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:28:38,980 INFO L225 Difference]: With dead ends: 92 [2023-11-24 21:28:38,980 INFO L226 Difference]: Without dead ends: 91 [2023-11-24 21:28:38,982 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 [2023-11-24 21:28:38,986 INFO L413 NwaCegarLoop]: 109 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-24 21:28:38,987 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 109 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-24 21:28:39,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2023-11-24 21:28:39,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2023-11-24 21:28:39,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 69 states have (on average 1.2463768115942029) internal successors, (86), 78 states have internal predecessors, (86), 17 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-24 21:28:39,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 112 transitions. [2023-11-24 21:28:39,032 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 112 transitions. Word has length 16 [2023-11-24 21:28:39,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:28:39,033 INFO L495 AbstractCegarLoop]: Abstraction has 91 states and 112 transitions. [2023-11-24 21:28:39,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 1 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) [2023-11-24 21:28:39,033 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 112 transitions. [2023-11-24 21:28:39,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-11-24 21:28:39,035 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:28:39,035 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:28:39,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-24 21:28:39,036 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting failErr0ASSERT_VIOLATIONMEMORY_LEAK === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-24 21:28:39,037 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:28:39,037 INFO L85 PathProgramCache]: Analyzing trace with hash 1498282137, now seen corresponding path program 1 times [2023-11-24 21:28:39,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:28:39,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498720692] [2023-11-24 21:28:39,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:28:39,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:28:39,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:28:39,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-24 21:28:39,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:28:40,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-24 21:28:40,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:28:40,116 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-24 21:28:40,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:28:40,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498720692] [2023-11-24 21:28:40,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1498720692] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 21:28:40,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1849506930] [2023-11-24 21:28:40,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:28:40,118 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 21:28:40,118 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8797f6-3917-4af0-ac8e-a0468439d8d9/bin/uautomizer-verify-NlZe1sFDwI/z3 [2023-11-24 21:28:40,123 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8797f6-3917-4af0-ac8e-a0468439d8d9/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 21:28:40,151 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8797f6-3917-4af0-ac8e-a0468439d8d9/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-24 21:28:40,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:28:40,342 INFO L262 TraceCheckSpWp]: Trace formula consists of 330 conjuncts, 41 conjunts are in the unsatisfiable core [2023-11-24 21:28:40,350 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:28:40,472 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-24 21:28:40,606 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-11-24 21:28:40,610 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 12 [2023-11-24 21:28:40,726 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2023-11-24 21:28:40,734 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:28:40,735 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 21:28:40,771 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 30 [2023-11-24 21:28:40,909 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 26 [2023-11-24 21:28:40,939 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-24 21:28:40,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1849506930] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 21:28:40,939 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-24 21:28:40,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 10] total 15 [2023-11-24 21:28:40,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749933358] [2023-11-24 21:28:40,941 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-24 21:28:40,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-24 21:28:40,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:28:40,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-24 21:28:40,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2023-11-24 21:28:40,951 INFO L87 Difference]: Start difference. First operand 91 states and 112 transitions. Second operand has 15 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 13 states have internal predecessors, (40), 6 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-24 21:28:44,973 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-24 21:28:48,995 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-24 21:28:53,048 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-24 21:28:57,094 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-24 21:29:01,150 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-24 21:29:05,253 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-24 21:29:06,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:29:06,183 INFO L93 Difference]: Finished difference Result 113 states and 136 transitions. [2023-11-24 21:29:06,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-24 21:29:06,185 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 13 states have internal predecessors, (40), 6 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 29 [2023-11-24 21:29:06,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:29:06,188 INFO L225 Difference]: With dead ends: 113 [2023-11-24 21:29:06,188 INFO L226 Difference]: Without dead ends: 113 [2023-11-24 21:29:06,189 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 55 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=94, Invalid=506, Unknown=0, NotChecked=0, Total=600 [2023-11-24 21:29:06,190 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 234 mSDsluCounter, 408 mSDsCounter, 0 mSdLazyCounter, 712 mSolverCounterSat, 54 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 239 SdHoareTripleChecker+Valid, 458 SdHoareTripleChecker+Invalid, 772 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 712 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.8s IncrementalHoareTripleChecker+Time [2023-11-24 21:29:06,191 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [239 Valid, 458 Invalid, 772 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 712 Invalid, 6 Unknown, 0 Unchecked, 24.8s Time] [2023-11-24 21:29:06,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2023-11-24 21:29:06,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 107. [2023-11-24 21:29:06,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 83 states have (on average 1.2409638554216869) internal successors, (103), 92 states have internal predecessors, (103), 17 states have call successors, (17), 6 states have call predecessors, (17), 5 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-24 21:29:06,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 129 transitions. [2023-11-24 21:29:06,217 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 129 transitions. Word has length 29 [2023-11-24 21:29:06,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:29:06,217 INFO L495 AbstractCegarLoop]: Abstraction has 107 states and 129 transitions. [2023-11-24 21:29:06,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 11 states have (on average 3.6363636363636362) internal successors, (40), 13 states have internal predecessors, (40), 6 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-24 21:29:06,218 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 129 transitions. [2023-11-24 21:29:06,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-11-24 21:29:06,219 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:29:06,219 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:29:06,235 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8797f6-3917-4af0-ac8e-a0468439d8d9/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-24 21:29:06,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8797f6-3917-4af0-ac8e-a0468439d8d9/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 21:29:06,426 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting failErr0ASSERT_VIOLATIONMEMORY_LEAK === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-24 21:29:06,427 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:29:06,427 INFO L85 PathProgramCache]: Analyzing trace with hash -1299726973, now seen corresponding path program 1 times [2023-11-24 21:29:06,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:29:06,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642268675] [2023-11-24 21:29:06,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:29:06,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:29:06,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:29:06,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-24 21:29:06,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:29:07,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-24 21:29:07,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:29:07,059 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-24 21:29:07,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-24 21:29:07,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642268675] [2023-11-24 21:29:07,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1642268675] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 21:29:07,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [680956986] [2023-11-24 21:29:07,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:29:07,061 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 21:29:07,061 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8797f6-3917-4af0-ac8e-a0468439d8d9/bin/uautomizer-verify-NlZe1sFDwI/z3 [2023-11-24 21:29:07,062 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8797f6-3917-4af0-ac8e-a0468439d8d9/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 21:29:07,085 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8797f6-3917-4af0-ac8e-a0468439d8d9/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-24 21:29:07,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:29:07,274 INFO L262 TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 39 conjunts are in the unsatisfiable core [2023-11-24 21:29:07,277 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:29:07,338 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-24 21:29:07,412 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-11-24 21:29:07,415 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 12 [2023-11-24 21:29:07,552 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2023-11-24 21:29:07,565 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:29:07,565 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 21:29:07,606 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 30 [2023-11-24 21:29:07,705 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 26 [2023-11-24 21:29:07,723 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-24 21:29:07,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [680956986] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 21:29:07,724 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-24 21:29:07,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 10] total 15 [2023-11-24 21:29:07,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311190086] [2023-11-24 21:29:07,724 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-24 21:29:07,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-24 21:29:07,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-24 21:29:07,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-24 21:29:07,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2023-11-24 21:29:07,726 INFO L87 Difference]: Start difference. First operand 107 states and 129 transitions. Second operand has 15 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 13 states have internal predecessors, (42), 6 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-24 21:29:11,740 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-24 21:29:15,754 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-24 21:29:19,801 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-24 21:29:23,905 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-24 21:29:27,995 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-24 21:29:28,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 21:29:28,692 INFO L93 Difference]: Finished difference Result 116 states and 137 transitions. [2023-11-24 21:29:28,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-24 21:29:28,694 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 13 states have internal predecessors, (42), 6 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 31 [2023-11-24 21:29:28,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 21:29:28,695 INFO L225 Difference]: With dead ends: 116 [2023-11-24 21:29:28,696 INFO L226 Difference]: Without dead ends: 116 [2023-11-24 21:29:28,696 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 59 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=94, Invalid=506, Unknown=0, NotChecked=0, Total=600 [2023-11-24 21:29:28,697 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 218 mSDsluCounter, 359 mSDsCounter, 0 mSdLazyCounter, 647 mSolverCounterSat, 51 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 409 SdHoareTripleChecker+Invalid, 703 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 647 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.7s IncrementalHoareTripleChecker+Time [2023-11-24 21:29:28,698 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [223 Valid, 409 Invalid, 703 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 647 Invalid, 5 Unknown, 0 Unchecked, 20.7s Time] [2023-11-24 21:29:28,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2023-11-24 21:29:28,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 111. [2023-11-24 21:29:28,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 86 states have (on average 1.2209302325581395) internal successors, (105), 95 states have internal predecessors, (105), 17 states have call successors, (17), 7 states have call predecessors, (17), 6 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-24 21:29:28,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 131 transitions. [2023-11-24 21:29:28,710 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 131 transitions. Word has length 31 [2023-11-24 21:29:28,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 21:29:28,710 INFO L495 AbstractCegarLoop]: Abstraction has 111 states and 131 transitions. [2023-11-24 21:29:28,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 13 states have internal predecessors, (42), 6 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-24 21:29:28,711 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 131 transitions. [2023-11-24 21:29:28,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-11-24 21:29:28,712 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 21:29:28,712 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:29:28,719 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8797f6-3917-4af0-ac8e-a0468439d8d9/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-24 21:29:28,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8797f6-3917-4af0-ac8e-a0468439d8d9/bin/uautomizer-verify-NlZe1sFDwI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 21:29:28,913 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting failErr0ASSERT_VIOLATIONMEMORY_LEAK === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2023-11-24 21:29:28,914 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:29:28,914 INFO L85 PathProgramCache]: Analyzing trace with hash 1239932399, now seen corresponding path program 1 times [2023-11-24 21:29:28,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-24 21:29:28,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46924650] [2023-11-24 21:29:28,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:29:28,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 21:29:28,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-24 21:29:28,988 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-24 21:29:29,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-24 21:29:29,043 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-24 21:29:29,043 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-24 21:29:29,044 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location failErr0ASSERT_VIOLATIONMEMORY_LEAK (1 of 2 remaining) [2023-11-24 21:29:29,046 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (0 of 2 remaining) [2023-11-24 21:29:29,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-24 21:29:29,049 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-11-24 21:29:29,054 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-24 21:29:29,089 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.11 09:29:29 BoogieIcfgContainer [2023-11-24 21:29:29,090 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-24 21:29:29,090 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-24 21:29:29,090 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-24 21:29:29,091 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-24 21:29:29,095 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 09:28:38" (3/4) ... [2023-11-24 21:29:29,096 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2023-11-24 21:29:29,178 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8797f6-3917-4af0-ac8e-a0468439d8d9/bin/uautomizer-verify-NlZe1sFDwI/witness.graphml [2023-11-24 21:29:29,178 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-24 21:29:29,178 INFO L158 Benchmark]: Toolchain (without parser) took 52423.46ms. Allocated memory was 136.3MB in the beginning and 211.8MB in the end (delta: 75.5MB). Free memory was 89.0MB in the beginning and 162.2MB in the end (delta: -73.2MB). Peak memory consumption was 3.3MB. Max. memory is 16.1GB. [2023-11-24 21:29:29,179 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 102.8MB. Free memory was 51.9MB in the beginning and 51.7MB in the end (delta: 159.4kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-24 21:29:29,179 INFO L158 Benchmark]: CACSL2BoogieTranslator took 652.18ms. Allocated memory is still 136.3MB. Free memory was 89.0MB in the beginning and 70.5MB in the end (delta: 18.5MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-24 21:29:29,180 INFO L158 Benchmark]: Boogie Procedure Inliner took 82.39ms. Allocated memory is still 136.3MB. Free memory was 70.5MB in the beginning and 68.1MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-24 21:29:29,180 INFO L158 Benchmark]: Boogie Preprocessor took 126.15ms. Allocated memory is still 136.3MB. Free memory was 68.1MB in the beginning and 63.0MB in the end (delta: 5.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-24 21:29:29,180 INFO L158 Benchmark]: RCFGBuilder took 936.43ms. Allocated memory was 136.3MB in the beginning and 176.2MB in the end (delta: 39.8MB). Free memory was 63.0MB in the beginning and 130.1MB in the end (delta: -67.2MB). Peak memory consumption was 18.8MB. Max. memory is 16.1GB. [2023-11-24 21:29:29,181 INFO L158 Benchmark]: TraceAbstraction took 50528.81ms. Allocated memory was 176.2MB in the beginning and 211.8MB in the end (delta: 35.7MB). Free memory was 128.9MB in the beginning and 164.3MB in the end (delta: -35.3MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-24 21:29:29,181 INFO L158 Benchmark]: Witness Printer took 87.66ms. Allocated memory is still 211.8MB. Free memory was 164.3MB in the beginning and 162.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-24 21:29:29,183 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 102.8MB. Free memory was 51.9MB in the beginning and 51.7MB in the end (delta: 159.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 652.18ms. Allocated memory is still 136.3MB. Free memory was 89.0MB in the beginning and 70.5MB in the end (delta: 18.5MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 82.39ms. Allocated memory is still 136.3MB. Free memory was 70.5MB in the beginning and 68.1MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 126.15ms. Allocated memory is still 136.3MB. Free memory was 68.1MB in the beginning and 63.0MB in the end (delta: 5.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 936.43ms. Allocated memory was 136.3MB in the beginning and 176.2MB in the end (delta: 39.8MB). Free memory was 63.0MB in the beginning and 130.1MB in the end (delta: -67.2MB). Peak memory consumption was 18.8MB. Max. memory is 16.1GB. * TraceAbstraction took 50528.81ms. Allocated memory was 176.2MB in the beginning and 211.8MB in the end (delta: 35.7MB). Free memory was 128.9MB in the beginning and 164.3MB in the end (delta: -35.3MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 87.66ms. Allocated memory is still 211.8MB. Free memory was 164.3MB in the beginning and 162.2MB 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.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: 12]: not all allocated memory was freed not all allocated memory was freed We found a FailurePath: [L639] const struct node *p1, *p2; [L640] CALL, EXPR create_sll(&p1, &p2) [L588] struct node *list = ((void *)0); [L588] struct node *list = ((void *)0); [L590] CALL chain_node(&list) [L582] CALL, EXPR alloc_node() [L573] struct node *ptr = malloc(sizeof *ptr); [L574] COND FALSE !(!ptr) VAL [ptr={-1:0}] [L576] ptr->next = ((void *)0) [L577] ptr->prev = ((void *)0) [L578] return ptr; [L582] RET, EXPR alloc_node() [L582] struct node *node = alloc_node(); [L583] EXPR \read(**ppnode) [L583] node->next = *ppnode [L584] *ppnode = node [L590] RET chain_node(&list) VAL [list={5:0}, pp1={3:0}, pp1={3:0}, pp2={6:0}, pp2={6:0}] [L591] COND FALSE !(__VERIFIER_nondet_int()) [L592] EXPR \read(*list) [L592] *pp2 = list [L593] COND FALSE !(__VERIFIER_nondet_int()) [L595] EXPR \read(*list) [L595] *pp1 = list [L597] CALL chain_node(&list) [L582] CALL, EXPR alloc_node() [L573] struct node *ptr = malloc(sizeof *ptr); [L574] COND FALSE !(!ptr) VAL [ptr={-2:0}] [L576] ptr->next = ((void *)0) [L577] ptr->prev = ((void *)0) [L578] return ptr; [L582] RET, EXPR alloc_node() [L582] struct node *node = alloc_node(); [L583] EXPR \read(**ppnode) [L583] node->next = *ppnode [L584] *ppnode = node [L597] RET chain_node(&list) VAL [list={5:0}, pp1={3:0}, pp1={3:0}, pp2={6:0}, pp2={6:0}] [L598] COND FALSE !(__VERIFIER_nondet_int()) [L599] EXPR \read(*list) [L599] return list; [L588] struct node *list = ((void *)0); [L599] return list; [L640] RET, EXPR create_sll(&p1, &p2) [L640] struct node *list = create_sll(&p1, &p2); [L642] EXPR \read(*p1) [L642] EXPR \read(*p2) [L642] CALL check_seq_next(p1, p2) VAL [beg={-1:0}, end={-1:0}] [L626] COND FALSE !(!(beg)) VAL [beg={-1:0}, beg={-1:0}, end={-1:0}, end={-1:0}] [L627] COND FALSE !(!(end)) VAL [beg={-1:0}, beg={-1:0}, end={-1:0}, end={-1:0}] [L628] EXPR beg->next [L628] beg = beg->next [L628] COND TRUE end != beg VAL [beg={-1:0}, beg={0:0}, end={-1:0}, end={-1:0}] [L629] COND TRUE !(beg) VAL [beg={-1:0}, beg={0:0}, end={-1:0}, end={-1:0}] [L629] CALL fail() [L565] CALL reach_error() [L12] COND FALSE !(0) [L12] __assert_fail ("0", "sll_to_dll_rev-1.c", 3, __extension__ __PRETTY_FUNCTION__) - UnprovableResult [Line: 637]: 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 5 procedures, 95 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 50.4s, OverallIterations: 4, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 46.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 11 mSolverCounterUnknown, 462 SdHoareTripleChecker+Valid, 45.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 452 mSDsluCounter, 976 SdHoareTripleChecker+Invalid, 45.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 767 mSDsCounter, 105 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1363 IncrementalHoareTripleChecker+Invalid, 1479 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 105 mSolverCounterUnsat, 209 mSDtfsCounter, 1363 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 164 GetRequests, 116 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=111occurred in iteration=3, InterpolantAutomatonStates: 40, 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, 3 MinimizatonAttempts, 11 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.7s InterpolantComputationTime, 171 NumberOfCodeBlocks, 171 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 189 ConstructedInterpolants, 8 QuantifiedInterpolants, 1438 SizeOfPredicates, 34 NumberOfNonLiveVariables, 662 ConjunctsInSsa, 80 ConjunctsInUnsatCore, 7 InterpolantComputations, 1 PerfectInterpolantSequences, 6/24 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! [2023-11-24 21:29:29,217 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bf8797f6-3917-4af0-ac8e-a0468439d8d9/bin/uautomizer-verify-NlZe1sFDwI/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)