./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memcleanup.prp --file ../../sv-benchmarks/c/list-ext3-properties/dll_nullified-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (memcleanup) Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b312e34-0f27-48eb-b2e7-bd67e7cba322/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b312e34-0f27-48eb-b2e7-bd67e7cba322/bin/uautomizer-verify-84ZbGMXZE1/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b312e34-0f27-48eb-b2e7-bd67e7cba322/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b312e34-0f27-48eb-b2e7-bd67e7cba322/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-ext3-properties/dll_nullified-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b312e34-0f27-48eb-b2e7-bd67e7cba322/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-MemCleanup-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b312e34-0f27-48eb-b2e7-bd67e7cba322/bin/uautomizer-verify-84ZbGMXZE1 --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 7887c90df48e0e32a16c0ae4217eb11a41b3b1af1e02493e847dc25239198c19 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-01 23:10:02,593 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-01 23:10:02,647 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b312e34-0f27-48eb-b2e7-bd67e7cba322/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-MemCleanup-32bit-Automizer_Default.epf [2024-12-01 23:10:02,652 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-01 23:10:02,652 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-01 23:10:02,673 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-01 23:10:02,674 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-01 23:10:02,674 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-01 23:10:02,674 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-01 23:10:02,674 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-01 23:10:02,674 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-01 23:10:02,674 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-01 23:10:02,675 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-01 23:10:02,675 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-01 23:10:02,675 INFO L153 SettingsManager]: * Use SBE=true [2024-12-01 23:10:02,675 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-01 23:10:02,675 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-01 23:10:02,675 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-01 23:10:02,675 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-01 23:10:02,675 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-01 23:10:02,676 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-01 23:10:02,676 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-01 23:10:02,676 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-12-01 23:10:02,676 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-12-01 23:10:02,676 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-01 23:10:02,676 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-01 23:10:02,676 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-12-01 23:10:02,676 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-12-01 23:10:02,676 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-01 23:10:02,676 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-01 23:10:02,676 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-01 23:10:02,677 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-01 23:10:02,677 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-01 23:10:02,677 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-01 23:10:02,677 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-01 23:10:02,677 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-01 23:10:02,677 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-01 23:10:02,677 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-01 23:10:02,677 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-01 23:10:02,677 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-01 23:10:02,678 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-01 23:10:02,678 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-01 23:10:02,678 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-01 23:10:02,678 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-01 23:10:02,678 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-01 23:10:02,678 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-01 23:10:02,678 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-01 23:10:02,678 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-01 23:10:02,678 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-01 23:10:02,679 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-01 23:10:02,679 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_2b312e34-0f27-48eb-b2e7-bd67e7cba322/bin/uautomizer-verify-84ZbGMXZE1 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 -> 7887c90df48e0e32a16c0ae4217eb11a41b3b1af1e02493e847dc25239198c19 [2024-12-01 23:10:02,881 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-01 23:10:02,888 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-01 23:10:02,890 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-01 23:10:02,891 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-01 23:10:02,891 INFO L274 PluginConnector]: CDTParser initialized [2024-12-01 23:10:02,892 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b312e34-0f27-48eb-b2e7-bd67e7cba322/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/list-ext3-properties/dll_nullified-1.i [2024-12-01 23:10:05,571 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b312e34-0f27-48eb-b2e7-bd67e7cba322/bin/uautomizer-verify-84ZbGMXZE1/data/b596f2c90/d7fe75d48157484e82dcb560e3dbb416/FLAG37468d259 [2024-12-01 23:10:05,840 INFO L384 CDTParser]: Found 1 translation units. [2024-12-01 23:10:05,841 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b312e34-0f27-48eb-b2e7-bd67e7cba322/sv-benchmarks/c/list-ext3-properties/dll_nullified-1.i [2024-12-01 23:10:05,851 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b312e34-0f27-48eb-b2e7-bd67e7cba322/bin/uautomizer-verify-84ZbGMXZE1/data/b596f2c90/d7fe75d48157484e82dcb560e3dbb416/FLAG37468d259 [2024-12-01 23:10:06,162 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b312e34-0f27-48eb-b2e7-bd67e7cba322/bin/uautomizer-verify-84ZbGMXZE1/data/b596f2c90/d7fe75d48157484e82dcb560e3dbb416 [2024-12-01 23:10:06,164 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-01 23:10:06,165 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-01 23:10:06,167 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-01 23:10:06,167 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-01 23:10:06,171 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-01 23:10:06,172 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 11:10:06" (1/1) ... [2024-12-01 23:10:06,172 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d7865ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:10:06, skipping insertion in model container [2024-12-01 23:10:06,173 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 11:10:06" (1/1) ... [2024-12-01 23:10:06,195 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-01 23:10:06,423 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-01 23:10:06,431 INFO L200 MainTranslator]: Completed pre-run [2024-12-01 23:10:06,461 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-01 23:10:06,479 INFO L204 MainTranslator]: Completed translation [2024-12-01 23:10:06,480 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:10:06 WrapperNode [2024-12-01 23:10:06,480 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-01 23:10:06,481 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-01 23:10:06,481 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-01 23:10:06,481 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-01 23:10:06,486 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:10:06" (1/1) ... [2024-12-01 23:10:06,495 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:10:06" (1/1) ... [2024-12-01 23:10:06,514 INFO L138 Inliner]: procedures = 123, calls = 26, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 111 [2024-12-01 23:10:06,514 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-01 23:10:06,515 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-01 23:10:06,515 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-01 23:10:06,515 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-01 23:10:06,523 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:10:06" (1/1) ... [2024-12-01 23:10:06,523 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:10:06" (1/1) ... [2024-12-01 23:10:06,526 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:10:06" (1/1) ... [2024-12-01 23:10:06,540 INFO L175 MemorySlicer]: Split 17 memory accesses to 2 slices as follows [2, 15]. 88 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 6 writes are split as follows [0, 6]. [2024-12-01 23:10:06,540 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:10:06" (1/1) ... [2024-12-01 23:10:06,540 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:10:06" (1/1) ... [2024-12-01 23:10:06,547 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:10:06" (1/1) ... [2024-12-01 23:10:06,548 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:10:06" (1/1) ... [2024-12-01 23:10:06,551 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:10:06" (1/1) ... [2024-12-01 23:10:06,552 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:10:06" (1/1) ... [2024-12-01 23:10:06,553 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:10:06" (1/1) ... [2024-12-01 23:10:06,555 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-01 23:10:06,555 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-01 23:10:06,556 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-01 23:10:06,556 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-01 23:10:06,556 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:10:06" (1/1) ... [2024-12-01 23:10:06,561 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-01 23:10:06,572 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b312e34-0f27-48eb-b2e7-bd67e7cba322/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 23:10:06,584 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b312e34-0f27-48eb-b2e7-bd67e7cba322/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-01 23:10:06,586 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b312e34-0f27-48eb-b2e7-bd67e7cba322/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-01 23:10:06,606 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-12-01 23:10:06,606 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-12-01 23:10:06,606 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-12-01 23:10:06,606 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-12-01 23:10:06,607 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-12-01 23:10:06,607 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-01 23:10:06,607 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-12-01 23:10:06,607 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-12-01 23:10:06,607 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-12-01 23:10:06,607 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-12-01 23:10:06,607 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-12-01 23:10:06,607 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-01 23:10:06,607 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-12-01 23:10:06,607 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-01 23:10:06,607 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-01 23:10:06,691 INFO L234 CfgBuilder]: Building ICFG [2024-12-01 23:10:06,692 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-01 23:10:06,849 INFO L? ?]: Removed 30 outVars from TransFormulas that were not future-live. [2024-12-01 23:10:06,849 INFO L283 CfgBuilder]: Performing block encoding [2024-12-01 23:10:06,858 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-01 23:10:06,858 INFO L312 CfgBuilder]: Removed 3 assume(true) statements. [2024-12-01 23:10:06,859 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 11:10:06 BoogieIcfgContainer [2024-12-01 23:10:06,859 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-01 23:10:06,861 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-01 23:10:06,861 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-01 23:10:06,865 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-01 23:10:06,865 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.12 11:10:06" (1/3) ... [2024-12-01 23:10:06,866 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20d2e96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 11:10:06, skipping insertion in model container [2024-12-01 23:10:06,866 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:10:06" (2/3) ... [2024-12-01 23:10:06,866 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20d2e96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 11:10:06, skipping insertion in model container [2024-12-01 23:10:06,866 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 11:10:06" (3/3) ... [2024-12-01 23:10:06,868 INFO L128 eAbstractionObserver]: Analyzing ICFG dll_nullified-1.i [2024-12-01 23:10:06,881 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-01 23:10:06,882 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG dll_nullified-1.i that has 1 procedures, 34 locations, 1 initial locations, 3 loop locations, and 2 error locations. [2024-12-01 23:10:06,909 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-01 23:10:06,919 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=None, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@66486b1c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-01 23:10:06,919 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-12-01 23:10:06,923 INFO L276 IsEmpty]: Start isEmpty. Operand has 34 states, 31 states have (on average 1.5483870967741935) internal successors, (48), 33 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 23:10:06,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-12-01 23:10:06,926 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:10:06,926 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 23:10:06,927 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2024-12-01 23:10:06,930 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:10:06,930 INFO L85 PathProgramCache]: Analyzing trace with hash 199200862, now seen corresponding path program 1 times [2024-12-01 23:10:06,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:10:06,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039637102] [2024-12-01 23:10:06,935 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:10:06,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:10:07,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:10:07,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 23:10:07,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:10:07,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039637102] [2024-12-01 23:10:07,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039637102] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 23:10:07,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 23:10:07,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-01 23:10:07,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645773149] [2024-12-01 23:10:07,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 23:10:07,046 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-12-01 23:10:07,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:10:07,067 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-12-01 23:10:07,067 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-01 23:10:07,069 INFO L87 Difference]: Start difference. First operand has 34 states, 31 states have (on average 1.5483870967741935) internal successors, (48), 33 states have internal predecessors, (48), 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) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 23:10:07,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:10:07,077 INFO L93 Difference]: Finished difference Result 33 states and 42 transitions. [2024-12-01 23:10:07,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-12-01 23:10:07,079 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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 9 [2024-12-01 23:10:07,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:10:07,084 INFO L225 Difference]: With dead ends: 33 [2024-12-01 23:10:07,084 INFO L226 Difference]: Without dead ends: 30 [2024-12-01 23:10:07,085 INFO L434 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 [2024-12-01 23:10:07,087 INFO L435 NwaCegarLoop]: 42 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-01 23:10:07,088 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-01 23:10:07,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2024-12-01 23:10:07,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2024-12-01 23:10:07,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 28 states have (on average 1.3571428571428572) internal successors, (38), 29 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 23:10:07,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 38 transitions. [2024-12-01 23:10:07,112 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 38 transitions. Word has length 9 [2024-12-01 23:10:07,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:10:07,112 INFO L471 AbstractCegarLoop]: Abstraction has 30 states and 38 transitions. [2024-12-01 23:10:07,112 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 23:10:07,112 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 38 transitions. [2024-12-01 23:10:07,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-12-01 23:10:07,113 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:10:07,113 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 23:10:07,113 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-12-01 23:10:07,113 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2024-12-01 23:10:07,114 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:10:07,114 INFO L85 PathProgramCache]: Analyzing trace with hash 1854407271, now seen corresponding path program 1 times [2024-12-01 23:10:07,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:10:07,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602840476] [2024-12-01 23:10:07,114 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:10:07,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:10:07,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:10:07,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 23:10:07,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:10:07,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602840476] [2024-12-01 23:10:07,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [602840476] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 23:10:07,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 23:10:07,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-01 23:10:07,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174647792] [2024-12-01 23:10:07,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 23:10:07,178 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-01 23:10:07,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:10:07,179 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-01 23:10:07,179 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-01 23:10:07,179 INFO L87 Difference]: Start difference. First operand 30 states and 38 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 23:10:07,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:10:07,202 INFO L93 Difference]: Finished difference Result 53 states and 68 transitions. [2024-12-01 23:10:07,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-01 23:10:07,202 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 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 10 [2024-12-01 23:10:07,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:10:07,203 INFO L225 Difference]: With dead ends: 53 [2024-12-01 23:10:07,203 INFO L226 Difference]: Without dead ends: 51 [2024-12-01 23:10:07,203 INFO L434 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 [2024-12-01 23:10:07,204 INFO L435 NwaCegarLoop]: 36 mSDtfsCounter, 21 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-01 23:10:07,205 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 69 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-01 23:10:07,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2024-12-01 23:10:07,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 41. [2024-12-01 23:10:07,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 39 states have (on average 1.3846153846153846) internal successors, (54), 40 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 23:10:07,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 54 transitions. [2024-12-01 23:10:07,210 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 54 transitions. Word has length 10 [2024-12-01 23:10:07,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:10:07,210 INFO L471 AbstractCegarLoop]: Abstraction has 41 states and 54 transitions. [2024-12-01 23:10:07,210 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 23:10:07,210 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 54 transitions. [2024-12-01 23:10:07,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-12-01 23:10:07,211 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:10:07,211 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 23:10:07,211 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-12-01 23:10:07,211 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2024-12-01 23:10:07,212 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:10:07,212 INFO L85 PathProgramCache]: Analyzing trace with hash -459644197, now seen corresponding path program 1 times [2024-12-01 23:10:07,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:10:07,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409906479] [2024-12-01 23:10:07,212 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:10:07,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:10:07,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:10:07,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 23:10:07,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:10:07,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409906479] [2024-12-01 23:10:07,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1409906479] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 23:10:07,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 23:10:07,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-01 23:10:07,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535455046] [2024-12-01 23:10:07,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 23:10:07,304 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-01 23:10:07,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:10:07,304 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-01 23:10:07,304 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-01 23:10:07,305 INFO L87 Difference]: Start difference. First operand 41 states and 54 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 23:10:07,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:10:07,357 INFO L93 Difference]: Finished difference Result 36 states and 45 transitions. [2024-12-01 23:10:07,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-01 23:10:07,358 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 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 15 [2024-12-01 23:10:07,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:10:07,359 INFO L225 Difference]: With dead ends: 36 [2024-12-01 23:10:07,359 INFO L226 Difference]: Without dead ends: 36 [2024-12-01 23:10:07,359 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-01 23:10:07,360 INFO L435 NwaCegarLoop]: 35 mSDtfsCounter, 6 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-01 23:10:07,360 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 67 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-01 23:10:07,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2024-12-01 23:10:07,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 31. [2024-12-01 23:10:07,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 29 states have (on average 1.3448275862068966) internal successors, (39), 30 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 23:10:07,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 39 transitions. [2024-12-01 23:10:07,363 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 39 transitions. Word has length 15 [2024-12-01 23:10:07,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:10:07,363 INFO L471 AbstractCegarLoop]: Abstraction has 31 states and 39 transitions. [2024-12-01 23:10:07,363 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 23:10:07,364 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 39 transitions. [2024-12-01 23:10:07,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-12-01 23:10:07,364 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:10:07,364 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 23:10:07,364 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-12-01 23:10:07,364 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2024-12-01 23:10:07,365 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:10:07,365 INFO L85 PathProgramCache]: Analyzing trace with hash -1262864943, now seen corresponding path program 1 times [2024-12-01 23:10:07,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:10:07,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114933872] [2024-12-01 23:10:07,365 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:10:07,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:10:07,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:10:07,460 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 23:10:07,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:10:07,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114933872] [2024-12-01 23:10:07,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114933872] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 23:10:07,461 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 23:10:07,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-01 23:10:07,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112013291] [2024-12-01 23:10:07,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 23:10:07,461 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-01 23:10:07,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:10:07,462 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-01 23:10:07,462 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-01 23:10:07,462 INFO L87 Difference]: Start difference. First operand 31 states and 39 transitions. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 23:10:07,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:10:07,525 INFO L93 Difference]: Finished difference Result 35 states and 43 transitions. [2024-12-01 23:10:07,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-01 23:10:07,526 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 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 16 [2024-12-01 23:10:07,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:10:07,527 INFO L225 Difference]: With dead ends: 35 [2024-12-01 23:10:07,527 INFO L226 Difference]: Without dead ends: 35 [2024-12-01 23:10:07,527 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-01 23:10:07,528 INFO L435 NwaCegarLoop]: 36 mSDtfsCounter, 0 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-01 23:10:07,528 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 67 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-01 23:10:07,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2024-12-01 23:10:07,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2024-12-01 23:10:07,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 33 states have (on average 1.303030303030303) internal successors, (43), 34 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 23:10:07,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 43 transitions. [2024-12-01 23:10:07,532 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 43 transitions. Word has length 16 [2024-12-01 23:10:07,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:10:07,532 INFO L471 AbstractCegarLoop]: Abstraction has 35 states and 43 transitions. [2024-12-01 23:10:07,532 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 23:10:07,532 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 43 transitions. [2024-12-01 23:10:07,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-12-01 23:10:07,533 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:10:07,533 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 23:10:07,533 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-12-01 23:10:07,533 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2024-12-01 23:10:07,533 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:10:07,534 INFO L85 PathProgramCache]: Analyzing trace with hash -1655891953, now seen corresponding path program 1 times [2024-12-01 23:10:07,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:10:07,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495462324] [2024-12-01 23:10:07,534 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:10:07,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:10:07,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:10:07,640 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 23:10:07,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:10:07,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495462324] [2024-12-01 23:10:07,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [495462324] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-01 23:10:07,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1461732221] [2024-12-01 23:10:07,641 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:10:07,641 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 23:10:07,641 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b312e34-0f27-48eb-b2e7-bd67e7cba322/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 23:10:07,643 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b312e34-0f27-48eb-b2e7-bd67e7cba322/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 23:10:07,644 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b312e34-0f27-48eb-b2e7-bd67e7cba322/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-01 23:10:07,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:10:07,737 INFO L256 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-12-01 23:10:07,742 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 23:10:07,779 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 23:10:07,779 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-01 23:10:07,810 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 23:10:07,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1461732221] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-01 23:10:07,810 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-01 23:10:07,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-12-01 23:10:07,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970080001] [2024-12-01 23:10:07,811 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-01 23:10:07,811 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-01 23:10:07,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:10:07,811 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-01 23:10:07,811 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-12-01 23:10:07,812 INFO L87 Difference]: Start difference. First operand 35 states and 43 transitions. Second operand has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 7 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 23:10:07,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:10:07,899 INFO L93 Difference]: Finished difference Result 49 states and 59 transitions. [2024-12-01 23:10:07,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-01 23:10:07,900 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 7 states have internal predecessors, (31), 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 16 [2024-12-01 23:10:07,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:10:07,900 INFO L225 Difference]: With dead ends: 49 [2024-12-01 23:10:07,900 INFO L226 Difference]: Without dead ends: 49 [2024-12-01 23:10:07,901 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-12-01 23:10:07,901 INFO L435 NwaCegarLoop]: 35 mSDtfsCounter, 14 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-01 23:10:07,902 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 103 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-01 23:10:07,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2024-12-01 23:10:07,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2024-12-01 23:10:07,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 47 states have (on average 1.2553191489361701) internal successors, (59), 48 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 23:10:07,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 59 transitions. [2024-12-01 23:10:07,906 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 59 transitions. Word has length 16 [2024-12-01 23:10:07,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:10:07,906 INFO L471 AbstractCegarLoop]: Abstraction has 49 states and 59 transitions. [2024-12-01 23:10:07,906 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 7 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 23:10:07,906 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 59 transitions. [2024-12-01 23:10:07,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-12-01 23:10:07,907 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:10:07,907 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 23:10:07,917 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b312e34-0f27-48eb-b2e7-bd67e7cba322/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-01 23:10:08,107 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b312e34-0f27-48eb-b2e7-bd67e7cba322/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 23:10:08,108 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2024-12-01 23:10:08,108 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:10:08,108 INFO L85 PathProgramCache]: Analyzing trace with hash 329716173, now seen corresponding path program 1 times [2024-12-01 23:10:08,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:10:08,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396660828] [2024-12-01 23:10:08,108 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:10:08,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:10:08,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:10:08,330 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-12-01 23:10:08,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:10:08,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396660828] [2024-12-01 23:10:08,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1396660828] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-01 23:10:08,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-01 23:10:08,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-01 23:10:08,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543600133] [2024-12-01 23:10:08,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-01 23:10:08,331 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-01 23:10:08,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:10:08,332 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-01 23:10:08,332 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-01 23:10:08,332 INFO L87 Difference]: Start difference. First operand 49 states and 59 transitions. Second operand has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 23:10:08,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:10:08,513 INFO L93 Difference]: Finished difference Result 66 states and 79 transitions. [2024-12-01 23:10:08,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-01 23:10:08,514 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 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 34 [2024-12-01 23:10:08,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:10:08,514 INFO L225 Difference]: With dead ends: 66 [2024-12-01 23:10:08,514 INFO L226 Difference]: Without dead ends: 66 [2024-12-01 23:10:08,515 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-12-01 23:10:08,515 INFO L435 NwaCegarLoop]: 24 mSDtfsCounter, 24 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-01 23:10:08,516 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 108 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-01 23:10:08,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2024-12-01 23:10:08,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 52. [2024-12-01 23:10:08,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 50 states have (on average 1.2) internal successors, (60), 51 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 23:10:08,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 60 transitions. [2024-12-01 23:10:08,519 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 60 transitions. Word has length 34 [2024-12-01 23:10:08,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:10:08,519 INFO L471 AbstractCegarLoop]: Abstraction has 52 states and 60 transitions. [2024-12-01 23:10:08,520 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 23:10:08,520 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 60 transitions. [2024-12-01 23:10:08,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-12-01 23:10:08,520 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:10:08,520 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 23:10:08,521 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-12-01 23:10:08,521 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2024-12-01 23:10:08,521 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:10:08,521 INFO L85 PathProgramCache]: Analyzing trace with hash -509934795, now seen corresponding path program 1 times [2024-12-01 23:10:08,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:10:08,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176684130] [2024-12-01 23:10:08,521 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:10:08,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:10:08,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:10:08,757 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 23:10:08,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:10:08,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176684130] [2024-12-01 23:10:08,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176684130] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-01 23:10:08,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [807167778] [2024-12-01 23:10:08,758 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:10:08,758 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 23:10:08,758 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b312e34-0f27-48eb-b2e7-bd67e7cba322/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 23:10:08,759 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b312e34-0f27-48eb-b2e7-bd67e7cba322/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 23:10:08,761 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b312e34-0f27-48eb-b2e7-bd67e7cba322/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-12-01 23:10:08,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-01 23:10:08,932 INFO L256 TraceCheckSpWp]: Trace formula consists of 386 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-12-01 23:10:08,935 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 23:10:08,991 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 23:10:08,991 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-01 23:10:09,066 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-01 23:10:09,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [807167778] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-01 23:10:09,066 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-01 23:10:09,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 7 [2024-12-01 23:10:09,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283273777] [2024-12-01 23:10:09,067 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-01 23:10:09,067 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-01 23:10:09,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:10:09,067 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-01 23:10:09,068 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-12-01 23:10:09,068 INFO L87 Difference]: Start difference. First operand 52 states and 60 transitions. Second operand has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 23:10:09,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:10:09,175 INFO L93 Difference]: Finished difference Result 58 states and 66 transitions. [2024-12-01 23:10:09,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-01 23:10:09,176 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2024-12-01 23:10:09,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:10:09,177 INFO L225 Difference]: With dead ends: 58 [2024-12-01 23:10:09,177 INFO L226 Difference]: Without dead ends: 58 [2024-12-01 23:10:09,177 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 73 SyntacticMatches, 5 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-12-01 23:10:09,177 INFO L435 NwaCegarLoop]: 35 mSDtfsCounter, 5 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-01 23:10:09,178 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 159 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-01 23:10:09,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2024-12-01 23:10:09,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2024-12-01 23:10:09,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 56 states have (on average 1.1785714285714286) internal successors, (66), 57 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 23:10:09,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 66 transitions. [2024-12-01 23:10:09,181 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 66 transitions. Word has length 39 [2024-12-01 23:10:09,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:10:09,181 INFO L471 AbstractCegarLoop]: Abstraction has 58 states and 66 transitions. [2024-12-01 23:10:09,182 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 23:10:09,182 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 66 transitions. [2024-12-01 23:10:09,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-12-01 23:10:09,182 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:10:09,183 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 23:10:09,191 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b312e34-0f27-48eb-b2e7-bd67e7cba322/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-12-01 23:10:09,383 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b312e34-0f27-48eb-b2e7-bd67e7cba322/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 23:10:09,383 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2024-12-01 23:10:09,383 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:10:09,384 INFO L85 PathProgramCache]: Analyzing trace with hash 615200395, now seen corresponding path program 2 times [2024-12-01 23:10:09,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:10:09,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486053685] [2024-12-01 23:10:09,384 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-01 23:10:09,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:10:09,456 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-01 23:10:09,456 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-01 23:10:10,330 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 36 proven. 5 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-12-01 23:10:10,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-01 23:10:10,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486053685] [2024-12-01 23:10:10,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486053685] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-01 23:10:10,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [613468698] [2024-12-01 23:10:10,330 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-01 23:10:10,331 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-01 23:10:10,331 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b312e34-0f27-48eb-b2e7-bd67e7cba322/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-01 23:10:10,333 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b312e34-0f27-48eb-b2e7-bd67e7cba322/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-01 23:10:10,334 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b312e34-0f27-48eb-b2e7-bd67e7cba322/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-12-01 23:10:10,566 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-01 23:10:10,566 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-01 23:10:10,569 INFO L256 TraceCheckSpWp]: Trace formula consists of 471 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-12-01 23:10:10,573 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-01 23:10:10,598 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-12-01 23:10:10,624 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-12-01 23:10:10,625 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-12-01 23:10:10,668 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 53 treesize of output 9 [2024-12-01 23:10:10,700 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-12-01 23:10:10,796 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 36 proven. 5 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-12-01 23:10:10,796 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-01 23:10:10,838 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_790 (Array Int Int))) (= (select (select (store |c_#memory_int#1| |c_ULTIMATE.start_dll_create_~head~0#1.base| v_ArrVal_790) |c_ULTIMATE.start_dll_create_~new_head~0#1.base|) (+ 8 |c_ULTIMATE.start_dll_create_~new_head~0#1.offset|)) 0)) is different from false [2024-12-01 23:10:10,873 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-01 23:10:10,874 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 5 case distinctions, treesize of input 40 treesize of output 61 [2024-12-01 23:10:10,881 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 36 treesize of output 24 [2024-12-01 23:10:10,926 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 36 proven. 4 refuted. 0 times theorem prover too weak. 24 trivial. 1 not checked. [2024-12-01 23:10:10,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [613468698] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-01 23:10:10,926 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-01 23:10:10,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 21 [2024-12-01 23:10:10,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270796803] [2024-12-01 23:10:10,926 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-01 23:10:10,927 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-12-01 23:10:10,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-01 23:10:10,927 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-12-01 23:10:10,927 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=330, Unknown=1, NotChecked=36, Total=420 [2024-12-01 23:10:10,928 INFO L87 Difference]: Start difference. First operand 58 states and 66 transitions. Second operand has 21 states, 21 states have (on average 2.5714285714285716) internal successors, (54), 21 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 23:10:11,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-01 23:10:11,560 INFO L93 Difference]: Finished difference Result 74 states and 87 transitions. [2024-12-01 23:10:11,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-12-01 23:10:11,561 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.5714285714285716) internal successors, (54), 21 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2024-12-01 23:10:11,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-01 23:10:11,561 INFO L225 Difference]: With dead ends: 74 [2024-12-01 23:10:11,561 INFO L226 Difference]: Without dead ends: 74 [2024-12-01 23:10:11,562 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=148, Invalid=725, Unknown=1, NotChecked=56, Total=930 [2024-12-01 23:10:11,562 INFO L435 NwaCegarLoop]: 23 mSDtfsCounter, 49 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 342 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 313 SdHoareTripleChecker+Invalid, 395 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 49 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-12-01 23:10:11,563 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 313 Invalid, 395 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 342 Invalid, 0 Unknown, 49 Unchecked, 0.4s Time] [2024-12-01 23:10:11,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2024-12-01 23:10:11,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 62. [2024-12-01 23:10:11,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 60 states have (on average 1.1833333333333333) internal successors, (71), 61 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 23:10:11,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 71 transitions. [2024-12-01 23:10:11,567 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 71 transitions. Word has length 45 [2024-12-01 23:10:11,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-01 23:10:11,567 INFO L471 AbstractCegarLoop]: Abstraction has 62 states and 71 transitions. [2024-12-01 23:10:11,567 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.5714285714285716) internal successors, (54), 21 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-01 23:10:11,567 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 71 transitions. [2024-12-01 23:10:11,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-12-01 23:10:11,568 INFO L210 NwaCegarLoop]: Found error trace [2024-12-01 23:10:11,569 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 23:10:11,577 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b312e34-0f27-48eb-b2e7-bd67e7cba322/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-12-01 23:10:11,769 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b312e34-0f27-48eb-b2e7-bd67e7cba322/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-12-01 23:10:11,769 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2024-12-01 23:10:11,769 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-01 23:10:11,770 INFO L85 PathProgramCache]: Analyzing trace with hash 617047437, now seen corresponding path program 1 times [2024-12-01 23:10:11,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-01 23:10:11,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494853810] [2024-12-01 23:10:11,770 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-01 23:10:11,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-01 23:10:11,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-01 23:10:11,862 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-12-01 23:10:11,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-01 23:10:11,936 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-12-01 23:10:11,936 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-12-01 23:10:11,937 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (1 of 2 remaining) [2024-12-01 23:10:11,938 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (0 of 2 remaining) [2024-12-01 23:10:11,938 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-12-01 23:10:11,941 INFO L422 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1] [2024-12-01 23:10:11,967 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-12-01 23:10:11,970 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.12 11:10:11 BoogieIcfgContainer [2024-12-01 23:10:11,970 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-12-01 23:10:11,971 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-12-01 23:10:11,971 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-12-01 23:10:11,971 INFO L274 PluginConnector]: Witness Printer initialized [2024-12-01 23:10:11,972 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 11:10:06" (3/4) ... [2024-12-01 23:10:11,972 INFO L140 WitnessPrinter]: Generating witness for reachability counterexample [2024-12-01 23:10:12,017 INFO L129 tionWitnessGenerator]: Generated YAML witness of length 23. [2024-12-01 23:10:12,071 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b312e34-0f27-48eb-b2e7-bd67e7cba322/bin/uautomizer-verify-84ZbGMXZE1/witness.graphml [2024-12-01 23:10:12,071 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b312e34-0f27-48eb-b2e7-bd67e7cba322/bin/uautomizer-verify-84ZbGMXZE1/witness.yml [2024-12-01 23:10:12,071 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-12-01 23:10:12,072 INFO L158 Benchmark]: Toolchain (without parser) took 5906.95ms. Allocated memory was 142.6MB in the beginning and 310.4MB in the end (delta: 167.8MB). Free memory was 115.4MB in the beginning and 178.8MB in the end (delta: -63.4MB). Peak memory consumption was 101.0MB. Max. memory is 16.1GB. [2024-12-01 23:10:12,072 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 142.6MB. Free memory is still 82.7MB. There was no memory consumed. Max. memory is 16.1GB. [2024-12-01 23:10:12,073 INFO L158 Benchmark]: CACSL2BoogieTranslator took 313.55ms. Allocated memory is still 142.6MB. Free memory was 115.4MB in the beginning and 98.0MB in the end (delta: 17.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-12-01 23:10:12,073 INFO L158 Benchmark]: Boogie Procedure Inliner took 33.79ms. Allocated memory is still 142.6MB. Free memory was 98.0MB in the beginning and 96.3MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-01 23:10:12,073 INFO L158 Benchmark]: Boogie Preprocessor took 40.05ms. Allocated memory is still 142.6MB. Free memory was 96.3MB in the beginning and 94.5MB in the end (delta: 1.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-12-01 23:10:12,073 INFO L158 Benchmark]: RCFGBuilder took 303.33ms. Allocated memory is still 142.6MB. Free memory was 94.5MB in the beginning and 79.8MB in the end (delta: 14.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-12-01 23:10:12,073 INFO L158 Benchmark]: TraceAbstraction took 5109.43ms. Allocated memory was 142.6MB in the beginning and 310.4MB in the end (delta: 167.8MB). Free memory was 79.3MB in the beginning and 184.0MB in the end (delta: -104.7MB). Peak memory consumption was 67.5MB. Max. memory is 16.1GB. [2024-12-01 23:10:12,074 INFO L158 Benchmark]: Witness Printer took 100.66ms. Allocated memory is still 310.4MB. Free memory was 184.0MB in the beginning and 178.8MB in the end (delta: 5.1MB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-01 23:10:12,075 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 142.6MB. Free memory is still 82.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 313.55ms. Allocated memory is still 142.6MB. Free memory was 115.4MB in the beginning and 98.0MB in the end (delta: 17.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 33.79ms. Allocated memory is still 142.6MB. Free memory was 98.0MB in the beginning and 96.3MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 40.05ms. Allocated memory is still 142.6MB. Free memory was 96.3MB in the beginning and 94.5MB in the end (delta: 1.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 303.33ms. Allocated memory is still 142.6MB. Free memory was 94.5MB in the beginning and 79.8MB in the end (delta: 14.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 5109.43ms. Allocated memory was 142.6MB in the beginning and 310.4MB in the end (delta: 167.8MB). Free memory was 79.3MB in the beginning and 184.0MB in the end (delta: -104.7MB). Peak memory consumption was 67.5MB. Max. memory is 16.1GB. * Witness Printer took 100.66ms. Allocated memory is still 310.4MB. Free memory was 184.0MB in the beginning and 178.8MB in the end (delta: 5.1MB). There was no memory consumed. 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: [L599] const int len = 5; [L600] CALL, EXPR dll_create(len) [L579] DLL head = ((void *)0); VAL [head={0:0}, len=5] [L580] COND TRUE len > 0 VAL [head={0:0}, len=5] [L581] DLL new_head = (DLL) malloc(sizeof(struct node)); [L582] COND FALSE !(((void *)0) == new_head) VAL [head={0:0}, len=5, new_head={-1:0}] [L585] new_head->data_0 = 0 [L586] new_head->data_1 = 0 [L587] new_head->data_2 = __VERIFIER_nondet_int() == len? 1 : 0 [L588] new_head->next = head [L589] new_head->prev = ((void *)0) [L590] COND FALSE !(\read(head)) [L593] head = new_head [L594] len-- [L580] COND TRUE len > 0 VAL [head={-1:0}, len=4] [L581] DLL new_head = (DLL) malloc(sizeof(struct node)); [L582] COND FALSE !(((void *)0) == new_head) VAL [head={-1:0}, len=4, new_head={-2:0}] [L585] new_head->data_0 = 0 [L586] new_head->data_1 = 0 [L587] new_head->data_2 = __VERIFIER_nondet_int() == len? 1 : 0 [L588] new_head->next = head [L589] new_head->prev = ((void *)0) [L590] COND TRUE \read(head) [L591] head->prev = new_head [L593] head = new_head [L594] len-- [L580] COND TRUE len > 0 VAL [head={-2:0}, len=3] [L581] DLL new_head = (DLL) malloc(sizeof(struct node)); [L582] COND FALSE !(((void *)0) == new_head) VAL [head={-2:0}, len=3, new_head={-3:0}] [L585] new_head->data_0 = 0 [L586] new_head->data_1 = 0 [L587] new_head->data_2 = __VERIFIER_nondet_int() == len? 1 : 0 [L588] new_head->next = head [L589] new_head->prev = ((void *)0) [L590] COND TRUE \read(head) [L591] head->prev = new_head [L593] head = new_head [L594] len-- [L580] COND TRUE len > 0 VAL [head={-3:0}, len=2] [L581] DLL new_head = (DLL) malloc(sizeof(struct node)); [L582] COND FALSE !(((void *)0) == new_head) VAL [head={-3:0}, len=2, new_head={-4:0}] [L585] new_head->data_0 = 0 [L586] new_head->data_1 = 0 [L587] new_head->data_2 = __VERIFIER_nondet_int() == len? 1 : 0 [L588] new_head->next = head [L589] new_head->prev = ((void *)0) [L590] COND TRUE \read(head) [L591] head->prev = new_head [L593] head = new_head [L594] len-- [L580] COND TRUE len > 0 VAL [head={-4:0}, len=1] [L581] DLL new_head = (DLL) malloc(sizeof(struct node)); [L582] COND FALSE !(((void *)0) == new_head) VAL [head={-4:0}, len=1, new_head={-5:0}] [L585] new_head->data_0 = 0 [L586] new_head->data_1 = 0 [L587] new_head->data_2 = __VERIFIER_nondet_int() == len? 1 : 0 [L588] new_head->next = head [L589] new_head->prev = ((void *)0) [L590] COND TRUE \read(head) [L591] head->prev = new_head [L593] head = new_head [L594] len-- [L580] COND FALSE !(len > 0) VAL [head={-5:0}] [L596] return head; VAL [\result={-5:0}] [L600] RET, EXPR dll_create(len) [L600] DLL head = dll_create(len); [L601] head->next [L601] COND TRUE head->next [L602] EXPR head->data_0 [L602] EXPR 0 != head->data_0 || 0 != head->data_1 VAL [head={-5:0}] [L602] EXPR 0 != head->data_0 || 0 != head->data_1 [L602] EXPR head->data_1 [L602] EXPR 0 != head->data_0 || 0 != head->data_1 VAL [head={-5:0}] [L602] 0 != head->data_0 || 0 != head->data_1 || 0 != head->data_2 VAL [head={-5:0}] [L602] 0 != head->data_0 || 0 != head->data_1 || 0 != head->data_2 [L602] EXPR head->data_2 [L602] 0 != head->data_0 || 0 != head->data_1 || 0 != head->data_2 VAL [head={-5:0}] [L602] COND TRUE 0 != head->data_0 || 0 != head->data_1 || 0 != head->data_2 [L616] CALL reach_error() [L12] COND FALSE !(0) [L12] __assert_fail ("0", "dll_nullified-1.c", 3, __extension__ __PRETTY_FUNCTION__) - UnprovableResult [Line: 598]: 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 1 procedures, 34 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 5.0s, OverallIterations: 9, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 119 SdHoareTripleChecker+Valid, 0.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 119 mSDsluCounter, 928 SdHoareTripleChecker+Invalid, 0.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 49 IncrementalHoareTripleChecker+Unchecked, 662 mSDsCounter, 8 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 491 IncrementalHoareTripleChecker+Invalid, 548 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 8 mSolverCounterUnsat, 266 mSDtfsCounter, 491 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 245 GetRequests, 193 SyntacticMatches, 5 SemanticMatches, 47 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=62occurred in iteration=8, InterpolantAutomatonStates: 46, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 8 MinimizatonAttempts, 41 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 2.1s InterpolantComputationTime, 329 NumberOfCodeBlocks, 329 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 370 ConstructedInterpolants, 1 QuantifiedInterpolants, 997 SizeOfPredicates, 5 NumberOfNonLiveVariables, 985 ConjunctsInSsa, 42 ConjunctsInUnsatCore, 14 InterpolantComputations, 5 PerfectInterpolantSequences, 221/359 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, ConComCheckerStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2024-12-01 23:10:12,093 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b312e34-0f27-48eb-b2e7-bd67e7cba322/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-memcleanup)