./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/memsafety-ext/tree_parent_ptr.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 4fc63b2a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_982d8ded-70bd-413e-b0ab-1d4cc80135b5/bin/uautomizer-verify-4GaUIPS5ZU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_982d8ded-70bd-413e-b0ab-1d4cc80135b5/bin/uautomizer-verify-4GaUIPS5ZU/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_982d8ded-70bd-413e-b0ab-1d4cc80135b5/bin/uautomizer-verify-4GaUIPS5ZU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_982d8ded-70bd-413e-b0ab-1d4cc80135b5/bin/uautomizer-verify-4GaUIPS5ZU/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/memsafety-ext/tree_parent_ptr.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_982d8ded-70bd-413e-b0ab-1d4cc80135b5/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_982d8ded-70bd-413e-b0ab-1d4cc80135b5/bin/uautomizer-verify-4GaUIPS5ZU --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6e14aa3eeddc5d261248d26114db1375e0f229d6456e2c7754877a082dc10921 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-10-31 22:06:13,502 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-31 22:06:13,599 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_982d8ded-70bd-413e-b0ab-1d4cc80135b5/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Termination-32bit-Automizer_Default.epf [2024-10-31 22:06:13,607 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-31 22:06:13,608 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-31 22:06:13,653 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-31 22:06:13,654 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-31 22:06:13,654 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-31 22:06:13,657 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-31 22:06:13,659 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-31 22:06:13,661 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-31 22:06:13,661 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-31 22:06:13,662 INFO L153 SettingsManager]: * Use SBE=true [2024-10-31 22:06:13,662 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2024-10-31 22:06:13,663 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2024-10-31 22:06:13,667 INFO L153 SettingsManager]: * Use old map elimination=false [2024-10-31 22:06:13,667 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2024-10-31 22:06:13,668 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2024-10-31 22:06:13,668 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2024-10-31 22:06:13,668 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-31 22:06:13,669 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2024-10-31 22:06:13,669 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-31 22:06:13,670 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-31 22:06:13,674 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-31 22:06:13,674 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-31 22:06:13,675 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2024-10-31 22:06:13,675 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2024-10-31 22:06:13,675 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2024-10-31 22:06:13,676 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-31 22:06:13,676 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-31 22:06:13,676 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-31 22:06:13,676 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-31 22:06:13,677 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2024-10-31 22:06:13,677 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-31 22:06:13,677 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-31 22:06:13,678 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-31 22:06:13,678 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-31 22:06:13,678 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-31 22:06:13,679 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2024-10-31 22:06:13,679 INFO L153 SettingsManager]: * TransformationType=MODULO_NEIGHBOR WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_982d8ded-70bd-413e-b0ab-1d4cc80135b5/bin/uautomizer-verify-4GaUIPS5ZU/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_982d8ded-70bd-413e-b0ab-1d4cc80135b5/bin/uautomizer-verify-4GaUIPS5ZU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6e14aa3eeddc5d261248d26114db1375e0f229d6456e2c7754877a082dc10921 [2024-10-31 22:06:14,066 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-31 22:06:14,105 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-31 22:06:14,108 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-31 22:06:14,110 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-31 22:06:14,111 INFO L274 PluginConnector]: CDTParser initialized [2024-10-31 22:06:14,113 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_982d8ded-70bd-413e-b0ab-1d4cc80135b5/bin/uautomizer-verify-4GaUIPS5ZU/../../sv-benchmarks/c/memsafety-ext/tree_parent_ptr.i Unable to find full path for "g++" [2024-10-31 22:06:16,241 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-31 22:06:16,504 INFO L384 CDTParser]: Found 1 translation units. [2024-10-31 22:06:16,507 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_982d8ded-70bd-413e-b0ab-1d4cc80135b5/sv-benchmarks/c/memsafety-ext/tree_parent_ptr.i [2024-10-31 22:06:16,521 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_982d8ded-70bd-413e-b0ab-1d4cc80135b5/bin/uautomizer-verify-4GaUIPS5ZU/data/4aad9e795/28430b21cee74ca188096bf3cf5fac66/FLAG6de53b06e [2024-10-31 22:06:16,820 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_982d8ded-70bd-413e-b0ab-1d4cc80135b5/bin/uautomizer-verify-4GaUIPS5ZU/data/4aad9e795/28430b21cee74ca188096bf3cf5fac66 [2024-10-31 22:06:16,823 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-31 22:06:16,825 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-31 22:06:16,826 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-31 22:06:16,827 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-31 22:06:16,832 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-31 22:06:16,832 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:06:16" (1/1) ... [2024-10-31 22:06:16,833 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65e85529 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:06:16, skipping insertion in model container [2024-10-31 22:06:16,834 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:06:16" (1/1) ... [2024-10-31 22:06:16,882 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-31 22:06:17,345 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:06:17,367 INFO L200 MainTranslator]: Completed pre-run [2024-10-31 22:06:17,430 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:06:17,464 INFO L204 MainTranslator]: Completed translation [2024-10-31 22:06:17,464 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:06:17 WrapperNode [2024-10-31 22:06:17,465 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-31 22:06:17,466 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-31 22:06:17,466 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-31 22:06:17,466 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-31 22:06:17,475 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:06:17" (1/1) ... [2024-10-31 22:06:17,497 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:06:17" (1/1) ... [2024-10-31 22:06:17,528 INFO L138 Inliner]: procedures = 123, calls = 49, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 140 [2024-10-31 22:06:17,529 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-31 22:06:17,529 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-31 22:06:17,530 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-31 22:06:17,530 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-31 22:06:17,545 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:06:17" (1/1) ... [2024-10-31 22:06:17,545 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:06:17" (1/1) ... [2024-10-31 22:06:17,549 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:06:17" (1/1) ... [2024-10-31 22:06:17,588 INFO L175 MemorySlicer]: Split 37 memory accesses to 2 slices as follows [2, 35]. 95 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 17 writes are split as follows [0, 17]. [2024-10-31 22:06:17,589 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:06:17" (1/1) ... [2024-10-31 22:06:17,593 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:06:17" (1/1) ... [2024-10-31 22:06:17,606 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:06:17" (1/1) ... [2024-10-31 22:06:17,616 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:06:17" (1/1) ... [2024-10-31 22:06:17,618 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:06:17" (1/1) ... [2024-10-31 22:06:17,619 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:06:17" (1/1) ... [2024-10-31 22:06:17,622 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-31 22:06:17,623 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-31 22:06:17,624 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-31 22:06:17,624 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-31 22:06:17,625 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:06:17" (1/1) ... [2024-10-31 22:06:17,636 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2024-10-31 22:06:17,648 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_982d8ded-70bd-413e-b0ab-1d4cc80135b5/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:06:17,663 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_982d8ded-70bd-413e-b0ab-1d4cc80135b5/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2024-10-31 22:06:17,667 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_982d8ded-70bd-413e-b0ab-1d4cc80135b5/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2024-10-31 22:06:17,712 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-31 22:06:17,712 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-31 22:06:17,713 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-10-31 22:06:17,717 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-10-31 22:06:17,717 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-10-31 22:06:17,717 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-10-31 22:06:17,717 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-31 22:06:17,718 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-31 22:06:17,718 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-31 22:06:17,718 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-31 22:06:17,718 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-31 22:06:17,964 INFO L238 CfgBuilder]: Building ICFG [2024-10-31 22:06:17,967 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-31 22:06:18,491 INFO L? ?]: Removed 32 outVars from TransFormulas that were not future-live. [2024-10-31 22:06:18,491 INFO L287 CfgBuilder]: Performing block encoding [2024-10-31 22:06:18,510 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-31 22:06:18,510 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-10-31 22:06:18,511 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:06:18 BoogieIcfgContainer [2024-10-31 22:06:18,511 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-31 22:06:18,513 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2024-10-31 22:06:18,513 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2024-10-31 22:06:18,518 INFO L274 PluginConnector]: BuchiAutomizer initialized [2024-10-31 22:06:18,518 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-10-31 22:06:18,519 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 31.10 10:06:16" (1/3) ... [2024-10-31 22:06:18,520 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@56dcdab2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 31.10 10:06:18, skipping insertion in model container [2024-10-31 22:06:18,521 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-10-31 22:06:18,521 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:06:17" (2/3) ... [2024-10-31 22:06:18,521 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@56dcdab2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 31.10 10:06:18, skipping insertion in model container [2024-10-31 22:06:18,521 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2024-10-31 22:06:18,521 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:06:18" (3/3) ... [2024-10-31 22:06:18,523 INFO L332 chiAutomizerObserver]: Analyzing ICFG tree_parent_ptr.i [2024-10-31 22:06:18,601 INFO L300 stractBuchiCegarLoop]: Interprodecural is true [2024-10-31 22:06:18,601 INFO L301 stractBuchiCegarLoop]: Hoare is None [2024-10-31 22:06:18,603 INFO L302 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2024-10-31 22:06:18,604 INFO L303 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2024-10-31 22:06:18,604 INFO L304 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2024-10-31 22:06:18,604 INFO L305 stractBuchiCegarLoop]: Difference is false [2024-10-31 22:06:18,605 INFO L306 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2024-10-31 22:06:18,605 INFO L310 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2024-10-31 22:06:18,611 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 24 states, 23 states have (on average 1.608695652173913) internal successors, (37), 23 states have internal predecessors, (37), 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) [2024-10-31 22:06:18,634 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 17 [2024-10-31 22:06:18,635 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-31 22:06:18,635 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-31 22:06:18,642 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2024-10-31 22:06:18,642 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:06:18,643 INFO L332 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2024-10-31 22:06:18,643 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 24 states, 23 states have (on average 1.608695652173913) internal successors, (37), 23 states have internal predecessors, (37), 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) [2024-10-31 22:06:18,645 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 17 [2024-10-31 22:06:18,646 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-31 22:06:18,646 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-31 22:06:18,646 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2024-10-31 22:06:18,646 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:06:18,655 INFO L745 eck$LassoCheckResult]: Stem: 20#$Ultimate##0true assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(18, 2); 9#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~malloc3#1.base, main_#t~malloc3#1.offset, main_#t~nondet4#1, main_#t~mem5#1.base, main_#t~mem5#1.offset, main_#t~mem6#1.base, main_#t~mem6#1.offset, main_#t~short7#1, main_#t~nondet8#1, main_#t~mem9#1.base, main_#t~mem9#1.offset, main_#t~mem10#1.base, main_#t~mem10#1.offset, main_#t~mem11#1.base, main_#t~mem11#1.offset, main_#t~nondet12#1, main_#t~short13#1, main_#t~malloc14#1.base, main_#t~malloc14#1.offset, main_#t~mem15#1.base, main_#t~mem15#1.offset, main_#t~mem16#1.base, main_#t~mem16#1.offset, main_#t~mem17#1.base, main_#t~mem17#1.offset, main_#t~mem18#1.base, main_#t~mem18#1.offset, main_#t~nondet19#1, main_#t~short20#1, main_#t~malloc21#1.base, main_#t~malloc21#1.offset, main_#t~mem22#1.base, main_#t~mem22#1.offset, main_#t~mem23#1.base, main_#t~mem23#1.offset, main_#t~mem24#1.base, main_#t~mem24#1.offset, main_#t~malloc25#1.base, main_#t~malloc25#1.offset, main_#t~mem26#1.base, main_#t~mem26#1.offset, main_#t~mem27#1.base, main_#t~mem27#1.offset, main_#t~mem28#1.base, main_#t~mem28#1.offset, main_#t~malloc29#1.base, main_#t~malloc29#1.offset, main_#t~mem30#1.base, main_#t~mem30#1.offset, main_#t~mem31#1.base, main_#t~mem31#1.offset, main_#t~malloc32#1.base, main_#t~malloc32#1.offset, main_#t~mem33#1.base, main_#t~mem33#1.offset, main_~root~0#1.base, main_~root~0#1.offset, main_~n~0#1.base, main_~n~0#1.offset, main_~s~0#1.base, main_~s~0#1.offset, main_~st~0#1.base, main_~st~0#1.offset;call main_#t~malloc3#1.base, main_#t~malloc3#1.offset := #Ultimate.allocOnHeap(12);main_~root~0#1.base, main_~root~0#1.offset := main_#t~malloc3#1.base, main_#t~malloc3#1.offset;havoc main_#t~malloc3#1.base, main_#t~malloc3#1.offset;havoc main_~n~0#1.base, main_~n~0#1.offset;call write~$Pointer$#1(0, 0, main_~root~0#1.base, main_~root~0#1.offset, 4);call write~$Pointer$#1(0, 0, main_~root~0#1.base, 4 + main_~root~0#1.offset, 4);call write~$Pointer$#1(0, 0, main_~root~0#1.base, 8 + main_~root~0#1.offset, 4); 5#L552-4true [2024-10-31 22:06:18,655 INFO L747 eck$LassoCheckResult]: Loop: 5#L552-4true havoc main_#t~nondet4#1; 16#L538-1true assume !!(0 != main_#t~nondet4#1);havoc main_#t~nondet4#1;main_~n~0#1.base, main_~n~0#1.offset := main_~root~0#1.base, main_~root~0#1.offset; 24#L541-2true assume !true; 7#L540-5true call main_#t~mem11#1.base, main_#t~mem11#1.offset := read~$Pointer$#1(main_~n~0#1.base, main_~n~0#1.offset, 4);main_#t~short13#1 := main_#t~mem11#1.base == 0 && main_#t~mem11#1.offset == 0; 6#L546true assume main_#t~short13#1;havoc main_#t~nondet12#1;main_#t~short13#1 := 0 != main_#t~nondet12#1; 18#L546-2true assume !main_#t~short13#1;havoc main_#t~mem11#1.base, main_#t~mem11#1.offset;havoc main_#t~nondet12#1;havoc main_#t~short13#1; 12#L546-4true call main_#t~mem18#1.base, main_#t~mem18#1.offset := read~$Pointer$#1(main_~n~0#1.base, 4 + main_~n~0#1.offset, 4);main_#t~short20#1 := main_#t~mem18#1.base == 0 && main_#t~mem18#1.offset == 0; 13#L552true assume main_#t~short20#1;havoc main_#t~nondet19#1;main_#t~short20#1 := 0 != main_#t~nondet19#1; 15#L552-2true assume main_#t~short20#1;havoc main_#t~mem18#1.base, main_#t~mem18#1.offset;havoc main_#t~nondet19#1;havoc main_#t~short20#1;call main_#t~malloc21#1.base, main_#t~malloc21#1.offset := #Ultimate.allocOnHeap(12);call write~$Pointer$#1(main_#t~malloc21#1.base, main_#t~malloc21#1.offset, main_~n~0#1.base, 4 + main_~n~0#1.offset, 4);havoc main_#t~malloc21#1.base, main_#t~malloc21#1.offset;call main_#t~mem22#1.base, main_#t~mem22#1.offset := read~$Pointer$#1(main_~n~0#1.base, 4 + main_~n~0#1.offset, 4);call write~$Pointer$#1(0, 0, main_#t~mem22#1.base, main_#t~mem22#1.offset, 4);havoc main_#t~mem22#1.base, main_#t~mem22#1.offset;call main_#t~mem23#1.base, main_#t~mem23#1.offset := read~$Pointer$#1(main_~n~0#1.base, 4 + main_~n~0#1.offset, 4);call write~$Pointer$#1(0, 0, main_#t~mem23#1.base, 4 + main_#t~mem23#1.offset, 4);havoc main_#t~mem23#1.base, main_#t~mem23#1.offset;call main_#t~mem24#1.base, main_#t~mem24#1.offset := read~$Pointer$#1(main_~n~0#1.base, 4 + main_~n~0#1.offset, 4);call write~$Pointer$#1(main_~n~0#1.base, main_~n~0#1.offset, main_#t~mem24#1.base, 8 + main_#t~mem24#1.offset, 4);havoc main_#t~mem24#1.base, main_#t~mem24#1.offset; 5#L552-4true [2024-10-31 22:06:18,662 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:06:18,662 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2024-10-31 22:06:18,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:06:18,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122436586] [2024-10-31 22:06:18,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:06:18,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:06:18,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:06:18,835 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-31 22:06:18,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:06:18,890 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-31 22:06:18,896 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:06:18,897 INFO L85 PathProgramCache]: Analyzing trace with hash -1807228567, now seen corresponding path program 1 times [2024-10-31 22:06:18,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:06:18,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789773837] [2024-10-31 22:06:18,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:06:18,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:06:19,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:06:19,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:06:19,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:06:19,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789773837] [2024-10-31 22:06:19,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789773837] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:06:19,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:06:19,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 22:06:19,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010408584] [2024-10-31 22:06:19,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:06:19,107 INFO L762 eck$LassoCheckResult]: loop already infeasible [2024-10-31 22:06:19,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:06:19,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-31 22:06:19,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-31 22:06:19,153 INFO L87 Difference]: Start difference. First operand has 24 states, 23 states have (on average 1.608695652173913) internal successors, (37), 23 states have internal predecessors, (37), 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) [2024-10-31 22:06:19,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:06:19,165 INFO L93 Difference]: Finished difference Result 24 states and 34 transitions. [2024-10-31 22:06:19,167 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 24 states and 34 transitions. [2024-10-31 22:06:19,169 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 17 [2024-10-31 22:06:19,173 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 24 states to 20 states and 30 transitions. [2024-10-31 22:06:19,174 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 20 [2024-10-31 22:06:19,175 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 20 [2024-10-31 22:06:19,176 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 30 transitions. [2024-10-31 22:06:19,177 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2024-10-31 22:06:19,178 INFO L218 hiAutomatonCegarLoop]: Abstraction has 20 states and 30 transitions. [2024-10-31 22:06:19,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states and 30 transitions. [2024-10-31 22:06:19,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2024-10-31 22:06:19,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 20 states have (on average 1.5) internal successors, (30), 19 states have internal predecessors, (30), 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) [2024-10-31 22:06:19,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 30 transitions. [2024-10-31 22:06:19,209 INFO L240 hiAutomatonCegarLoop]: Abstraction has 20 states and 30 transitions. [2024-10-31 22:06:19,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-31 22:06:19,215 INFO L425 stractBuchiCegarLoop]: Abstraction has 20 states and 30 transitions. [2024-10-31 22:06:19,215 INFO L332 stractBuchiCegarLoop]: ======== Iteration 2 ============ [2024-10-31 22:06:19,215 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 20 states and 30 transitions. [2024-10-31 22:06:19,222 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 17 [2024-10-31 22:06:19,222 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-31 22:06:19,222 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-31 22:06:19,222 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2024-10-31 22:06:19,223 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:06:19,223 INFO L745 eck$LassoCheckResult]: Stem: 73#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(18, 2); 66#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~malloc3#1.base, main_#t~malloc3#1.offset, main_#t~nondet4#1, main_#t~mem5#1.base, main_#t~mem5#1.offset, main_#t~mem6#1.base, main_#t~mem6#1.offset, main_#t~short7#1, main_#t~nondet8#1, main_#t~mem9#1.base, main_#t~mem9#1.offset, main_#t~mem10#1.base, main_#t~mem10#1.offset, main_#t~mem11#1.base, main_#t~mem11#1.offset, main_#t~nondet12#1, main_#t~short13#1, main_#t~malloc14#1.base, main_#t~malloc14#1.offset, main_#t~mem15#1.base, main_#t~mem15#1.offset, main_#t~mem16#1.base, main_#t~mem16#1.offset, main_#t~mem17#1.base, main_#t~mem17#1.offset, main_#t~mem18#1.base, main_#t~mem18#1.offset, main_#t~nondet19#1, main_#t~short20#1, main_#t~malloc21#1.base, main_#t~malloc21#1.offset, main_#t~mem22#1.base, main_#t~mem22#1.offset, main_#t~mem23#1.base, main_#t~mem23#1.offset, main_#t~mem24#1.base, main_#t~mem24#1.offset, main_#t~malloc25#1.base, main_#t~malloc25#1.offset, main_#t~mem26#1.base, main_#t~mem26#1.offset, main_#t~mem27#1.base, main_#t~mem27#1.offset, main_#t~mem28#1.base, main_#t~mem28#1.offset, main_#t~malloc29#1.base, main_#t~malloc29#1.offset, main_#t~mem30#1.base, main_#t~mem30#1.offset, main_#t~mem31#1.base, main_#t~mem31#1.offset, main_#t~malloc32#1.base, main_#t~malloc32#1.offset, main_#t~mem33#1.base, main_#t~mem33#1.offset, main_~root~0#1.base, main_~root~0#1.offset, main_~n~0#1.base, main_~n~0#1.offset, main_~s~0#1.base, main_~s~0#1.offset, main_~st~0#1.base, main_~st~0#1.offset;call main_#t~malloc3#1.base, main_#t~malloc3#1.offset := #Ultimate.allocOnHeap(12);main_~root~0#1.base, main_~root~0#1.offset := main_#t~malloc3#1.base, main_#t~malloc3#1.offset;havoc main_#t~malloc3#1.base, main_#t~malloc3#1.offset;havoc main_~n~0#1.base, main_~n~0#1.offset;call write~$Pointer$#1(0, 0, main_~root~0#1.base, main_~root~0#1.offset, 4);call write~$Pointer$#1(0, 0, main_~root~0#1.base, 4 + main_~root~0#1.offset, 4);call write~$Pointer$#1(0, 0, main_~root~0#1.base, 8 + main_~root~0#1.offset, 4); 60#L552-4 [2024-10-31 22:06:19,223 INFO L747 eck$LassoCheckResult]: Loop: 60#L552-4 havoc main_#t~nondet4#1; 61#L538-1 assume !!(0 != main_#t~nondet4#1);havoc main_#t~nondet4#1;main_~n~0#1.base, main_~n~0#1.offset := main_~root~0#1.base, main_~root~0#1.offset; 72#L541-2 call main_#t~mem5#1.base, main_#t~mem5#1.offset := read~$Pointer$#1(main_~n~0#1.base, main_~n~0#1.offset, 4);main_#t~short7#1 := main_#t~mem5#1.base != 0 || main_#t~mem5#1.offset != 0; 58#L540-1 assume main_#t~short7#1;call main_#t~mem6#1.base, main_#t~mem6#1.offset := read~$Pointer$#1(main_~n~0#1.base, 4 + main_~n~0#1.offset, 4);main_#t~short7#1 := main_#t~mem6#1.base != 0 || main_#t~mem6#1.offset != 0; 59#L540-3 assume !main_#t~short7#1;havoc main_#t~mem5#1.base, main_#t~mem5#1.offset;havoc main_#t~mem6#1.base, main_#t~mem6#1.offset;havoc main_#t~short7#1; 64#L540-5 call main_#t~mem11#1.base, main_#t~mem11#1.offset := read~$Pointer$#1(main_~n~0#1.base, main_~n~0#1.offset, 4);main_#t~short13#1 := main_#t~mem11#1.base == 0 && main_#t~mem11#1.offset == 0; 62#L546 assume main_#t~short13#1;havoc main_#t~nondet12#1;main_#t~short13#1 := 0 != main_#t~nondet12#1; 63#L546-2 assume !main_#t~short13#1;havoc main_#t~mem11#1.base, main_#t~mem11#1.offset;havoc main_#t~nondet12#1;havoc main_#t~short13#1; 69#L546-4 call main_#t~mem18#1.base, main_#t~mem18#1.offset := read~$Pointer$#1(main_~n~0#1.base, 4 + main_~n~0#1.offset, 4);main_#t~short20#1 := main_#t~mem18#1.base == 0 && main_#t~mem18#1.offset == 0; 70#L552 assume main_#t~short20#1;havoc main_#t~nondet19#1;main_#t~short20#1 := 0 != main_#t~nondet19#1; 71#L552-2 assume main_#t~short20#1;havoc main_#t~mem18#1.base, main_#t~mem18#1.offset;havoc main_#t~nondet19#1;havoc main_#t~short20#1;call main_#t~malloc21#1.base, main_#t~malloc21#1.offset := #Ultimate.allocOnHeap(12);call write~$Pointer$#1(main_#t~malloc21#1.base, main_#t~malloc21#1.offset, main_~n~0#1.base, 4 + main_~n~0#1.offset, 4);havoc main_#t~malloc21#1.base, main_#t~malloc21#1.offset;call main_#t~mem22#1.base, main_#t~mem22#1.offset := read~$Pointer$#1(main_~n~0#1.base, 4 + main_~n~0#1.offset, 4);call write~$Pointer$#1(0, 0, main_#t~mem22#1.base, main_#t~mem22#1.offset, 4);havoc main_#t~mem22#1.base, main_#t~mem22#1.offset;call main_#t~mem23#1.base, main_#t~mem23#1.offset := read~$Pointer$#1(main_~n~0#1.base, 4 + main_~n~0#1.offset, 4);call write~$Pointer$#1(0, 0, main_#t~mem23#1.base, 4 + main_#t~mem23#1.offset, 4);havoc main_#t~mem23#1.base, main_#t~mem23#1.offset;call main_#t~mem24#1.base, main_#t~mem24#1.offset := read~$Pointer$#1(main_~n~0#1.base, 4 + main_~n~0#1.offset, 4);call write~$Pointer$#1(main_~n~0#1.base, main_~n~0#1.offset, main_#t~mem24#1.base, 8 + main_#t~mem24#1.offset, 4);havoc main_#t~mem24#1.base, main_#t~mem24#1.offset; 60#L552-4 [2024-10-31 22:06:19,224 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:06:19,224 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 2 times [2024-10-31 22:06:19,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:06:19,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948114010] [2024-10-31 22:06:19,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:06:19,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:06:19,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:06:19,270 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-31 22:06:19,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:06:19,302 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-31 22:06:19,303 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:06:19,303 INFO L85 PathProgramCache]: Analyzing trace with hash 639218396, now seen corresponding path program 1 times [2024-10-31 22:06:19,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:06:19,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564570948] [2024-10-31 22:06:19,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:06:19,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:06:19,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:06:19,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:06:19,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:06:19,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564570948] [2024-10-31 22:06:19,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [564570948] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:06:19,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:06:19,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-31 22:06:19,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514750422] [2024-10-31 22:06:19,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:06:19,704 INFO L762 eck$LassoCheckResult]: loop already infeasible [2024-10-31 22:06:19,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:06:19,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 22:06:19,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-31 22:06:19,705 INFO L87 Difference]: Start difference. First operand 20 states and 30 transitions. cyclomatic complexity: 12 Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 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) [2024-10-31 22:06:19,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:06:19,989 INFO L93 Difference]: Finished difference Result 31 states and 45 transitions. [2024-10-31 22:06:19,989 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 31 states and 45 transitions. [2024-10-31 22:06:19,990 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 27 [2024-10-31 22:06:19,992 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 31 states to 31 states and 45 transitions. [2024-10-31 22:06:19,993 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 31 [2024-10-31 22:06:19,993 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 31 [2024-10-31 22:06:19,993 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 45 transitions. [2024-10-31 22:06:19,993 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2024-10-31 22:06:19,994 INFO L218 hiAutomatonCegarLoop]: Abstraction has 31 states and 45 transitions. [2024-10-31 22:06:19,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states and 45 transitions. [2024-10-31 22:06:19,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 24. [2024-10-31 22:06:19,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 24 states have (on average 1.4583333333333333) internal successors, (35), 23 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:06:19,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 35 transitions. [2024-10-31 22:06:20,000 INFO L240 hiAutomatonCegarLoop]: Abstraction has 24 states and 35 transitions. [2024-10-31 22:06:20,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-31 22:06:20,002 INFO L425 stractBuchiCegarLoop]: Abstraction has 24 states and 35 transitions. [2024-10-31 22:06:20,002 INFO L332 stractBuchiCegarLoop]: ======== Iteration 3 ============ [2024-10-31 22:06:20,002 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 24 states and 35 transitions. [2024-10-31 22:06:20,003 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 21 [2024-10-31 22:06:20,003 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-31 22:06:20,003 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-31 22:06:20,004 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2024-10-31 22:06:20,004 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:06:20,004 INFO L745 eck$LassoCheckResult]: Stem: 136#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(18, 2); 129#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~malloc3#1.base, main_#t~malloc3#1.offset, main_#t~nondet4#1, main_#t~mem5#1.base, main_#t~mem5#1.offset, main_#t~mem6#1.base, main_#t~mem6#1.offset, main_#t~short7#1, main_#t~nondet8#1, main_#t~mem9#1.base, main_#t~mem9#1.offset, main_#t~mem10#1.base, main_#t~mem10#1.offset, main_#t~mem11#1.base, main_#t~mem11#1.offset, main_#t~nondet12#1, main_#t~short13#1, main_#t~malloc14#1.base, main_#t~malloc14#1.offset, main_#t~mem15#1.base, main_#t~mem15#1.offset, main_#t~mem16#1.base, main_#t~mem16#1.offset, main_#t~mem17#1.base, main_#t~mem17#1.offset, main_#t~mem18#1.base, main_#t~mem18#1.offset, main_#t~nondet19#1, main_#t~short20#1, main_#t~malloc21#1.base, main_#t~malloc21#1.offset, main_#t~mem22#1.base, main_#t~mem22#1.offset, main_#t~mem23#1.base, main_#t~mem23#1.offset, main_#t~mem24#1.base, main_#t~mem24#1.offset, main_#t~malloc25#1.base, main_#t~malloc25#1.offset, main_#t~mem26#1.base, main_#t~mem26#1.offset, main_#t~mem27#1.base, main_#t~mem27#1.offset, main_#t~mem28#1.base, main_#t~mem28#1.offset, main_#t~malloc29#1.base, main_#t~malloc29#1.offset, main_#t~mem30#1.base, main_#t~mem30#1.offset, main_#t~mem31#1.base, main_#t~mem31#1.offset, main_#t~malloc32#1.base, main_#t~malloc32#1.offset, main_#t~mem33#1.base, main_#t~mem33#1.offset, main_~root~0#1.base, main_~root~0#1.offset, main_~n~0#1.base, main_~n~0#1.offset, main_~s~0#1.base, main_~s~0#1.offset, main_~st~0#1.base, main_~st~0#1.offset;call main_#t~malloc3#1.base, main_#t~malloc3#1.offset := #Ultimate.allocOnHeap(12);main_~root~0#1.base, main_~root~0#1.offset := main_#t~malloc3#1.base, main_#t~malloc3#1.offset;havoc main_#t~malloc3#1.base, main_#t~malloc3#1.offset;havoc main_~n~0#1.base, main_~n~0#1.offset;call write~$Pointer$#1(0, 0, main_~root~0#1.base, main_~root~0#1.offset, 4);call write~$Pointer$#1(0, 0, main_~root~0#1.base, 4 + main_~root~0#1.offset, 4);call write~$Pointer$#1(0, 0, main_~root~0#1.base, 8 + main_~root~0#1.offset, 4); 122#L552-4 [2024-10-31 22:06:20,004 INFO L747 eck$LassoCheckResult]: Loop: 122#L552-4 havoc main_#t~nondet4#1; 123#L538-1 assume !!(0 != main_#t~nondet4#1);havoc main_#t~nondet4#1;main_~n~0#1.base, main_~n~0#1.offset := main_~root~0#1.base, main_~root~0#1.offset; 135#L541-2 call main_#t~mem5#1.base, main_#t~mem5#1.offset := read~$Pointer$#1(main_~n~0#1.base, main_~n~0#1.offset, 4);main_#t~short7#1 := main_#t~mem5#1.base != 0 || main_#t~mem5#1.offset != 0; 119#L540-1 assume main_#t~short7#1;call main_#t~mem6#1.base, main_#t~mem6#1.offset := read~$Pointer$#1(main_~n~0#1.base, 4 + main_~n~0#1.offset, 4);main_#t~short7#1 := main_#t~mem6#1.base != 0 || main_#t~mem6#1.offset != 0; 120#L540-3 assume !main_#t~short7#1;havoc main_#t~mem5#1.base, main_#t~mem5#1.offset;havoc main_#t~mem6#1.base, main_#t~mem6#1.offset;havoc main_#t~short7#1; 140#L540-5 call main_#t~mem11#1.base, main_#t~mem11#1.offset := read~$Pointer$#1(main_~n~0#1.base, main_~n~0#1.offset, 4);main_#t~short13#1 := main_#t~mem11#1.base == 0 && main_#t~mem11#1.offset == 0; 124#L546 assume !main_#t~short13#1; 125#L546-2 assume !main_#t~short13#1;havoc main_#t~mem11#1.base, main_#t~mem11#1.offset;havoc main_#t~nondet12#1;havoc main_#t~short13#1; 132#L546-4 call main_#t~mem18#1.base, main_#t~mem18#1.offset := read~$Pointer$#1(main_~n~0#1.base, 4 + main_~n~0#1.offset, 4);main_#t~short20#1 := main_#t~mem18#1.base == 0 && main_#t~mem18#1.offset == 0; 133#L552 assume main_#t~short20#1;havoc main_#t~nondet19#1;main_#t~short20#1 := 0 != main_#t~nondet19#1; 134#L552-2 assume main_#t~short20#1;havoc main_#t~mem18#1.base, main_#t~mem18#1.offset;havoc main_#t~nondet19#1;havoc main_#t~short20#1;call main_#t~malloc21#1.base, main_#t~malloc21#1.offset := #Ultimate.allocOnHeap(12);call write~$Pointer$#1(main_#t~malloc21#1.base, main_#t~malloc21#1.offset, main_~n~0#1.base, 4 + main_~n~0#1.offset, 4);havoc main_#t~malloc21#1.base, main_#t~malloc21#1.offset;call main_#t~mem22#1.base, main_#t~mem22#1.offset := read~$Pointer$#1(main_~n~0#1.base, 4 + main_~n~0#1.offset, 4);call write~$Pointer$#1(0, 0, main_#t~mem22#1.base, main_#t~mem22#1.offset, 4);havoc main_#t~mem22#1.base, main_#t~mem22#1.offset;call main_#t~mem23#1.base, main_#t~mem23#1.offset := read~$Pointer$#1(main_~n~0#1.base, 4 + main_~n~0#1.offset, 4);call write~$Pointer$#1(0, 0, main_#t~mem23#1.base, 4 + main_#t~mem23#1.offset, 4);havoc main_#t~mem23#1.base, main_#t~mem23#1.offset;call main_#t~mem24#1.base, main_#t~mem24#1.offset := read~$Pointer$#1(main_~n~0#1.base, 4 + main_~n~0#1.offset, 4);call write~$Pointer$#1(main_~n~0#1.base, main_~n~0#1.offset, main_#t~mem24#1.base, 8 + main_#t~mem24#1.offset, 4);havoc main_#t~mem24#1.base, main_#t~mem24#1.offset; 122#L552-4 [2024-10-31 22:06:20,009 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:06:20,009 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 3 times [2024-10-31 22:06:20,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:06:20,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409331606] [2024-10-31 22:06:20,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:06:20,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:06:20,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:06:20,032 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-31 22:06:20,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:06:20,049 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-31 22:06:20,050 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:06:20,050 INFO L85 PathProgramCache]: Analyzing trace with hash 641065438, now seen corresponding path program 1 times [2024-10-31 22:06:20,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:06:20,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611981497] [2024-10-31 22:06:20,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:06:20,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:06:20,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:06:20,115 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-31 22:06:20,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:06:20,146 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-31 22:06:20,147 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:06:20,147 INFO L85 PathProgramCache]: Analyzing trace with hash 264589532, now seen corresponding path program 1 times [2024-10-31 22:06:20,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:06:20,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102587315] [2024-10-31 22:06:20,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:06:20,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:06:20,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:06:20,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:06:20,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:06:20,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102587315] [2024-10-31 22:06:20,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102587315] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:06:20,496 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:06:20,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-31 22:06:20,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041097128] [2024-10-31 22:06:20,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:06:27,064 WARN L286 SmtUtils]: Spent 6.56s on a formula simplification. DAG size of input: 196 DAG size of output: 143 (called from [L 276] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2024-10-31 22:06:52,159 WARN L286 SmtUtils]: Spent 19.09s on a formula simplification that was a NOOP. DAG size: 191 (called from [L 299] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2024-10-31 22:06:52,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:06:52,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 22:06:52,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-31 22:06:52,162 INFO L87 Difference]: Start difference. First operand 24 states and 35 transitions. cyclomatic complexity: 13 Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:06:52,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-31 22:06:52,408 INFO L93 Difference]: Finished difference Result 40 states and 56 transitions. [2024-10-31 22:06:52,408 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 40 states and 56 transitions. [2024-10-31 22:06:52,409 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 33 [2024-10-31 22:06:52,410 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 40 states to 40 states and 56 transitions. [2024-10-31 22:06:52,411 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 40 [2024-10-31 22:06:52,411 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 40 [2024-10-31 22:06:52,411 INFO L73 IsDeterministic]: Start isDeterministic. Operand 40 states and 56 transitions. [2024-10-31 22:06:52,412 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2024-10-31 22:06:52,412 INFO L218 hiAutomatonCegarLoop]: Abstraction has 40 states and 56 transitions. [2024-10-31 22:06:52,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states and 56 transitions. [2024-10-31 22:06:52,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 36. [2024-10-31 22:06:52,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 36 states have (on average 1.4166666666666667) internal successors, (51), 35 states have internal predecessors, (51), 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) [2024-10-31 22:06:52,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 51 transitions. [2024-10-31 22:06:52,416 INFO L240 hiAutomatonCegarLoop]: Abstraction has 36 states and 51 transitions. [2024-10-31 22:06:52,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-31 22:06:52,417 INFO L425 stractBuchiCegarLoop]: Abstraction has 36 states and 51 transitions. [2024-10-31 22:06:52,417 INFO L332 stractBuchiCegarLoop]: ======== Iteration 4 ============ [2024-10-31 22:06:52,417 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 36 states and 51 transitions. [2024-10-31 22:06:52,418 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 33 [2024-10-31 22:06:52,418 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2024-10-31 22:06:52,419 INFO L119 BuchiIsEmpty]: Starting construction of run [2024-10-31 22:06:52,419 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2024-10-31 22:06:52,419 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:06:52,419 INFO L745 eck$LassoCheckResult]: Stem: 218#$Ultimate##0 assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int#0(48, 1, 0, 1);call write~init~int#0(0, 1, 1, 1);call #Ultimate.allocInit(18, 2); 205#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~malloc3#1.base, main_#t~malloc3#1.offset, main_#t~nondet4#1, main_#t~mem5#1.base, main_#t~mem5#1.offset, main_#t~mem6#1.base, main_#t~mem6#1.offset, main_#t~short7#1, main_#t~nondet8#1, main_#t~mem9#1.base, main_#t~mem9#1.offset, main_#t~mem10#1.base, main_#t~mem10#1.offset, main_#t~mem11#1.base, main_#t~mem11#1.offset, main_#t~nondet12#1, main_#t~short13#1, main_#t~malloc14#1.base, main_#t~malloc14#1.offset, main_#t~mem15#1.base, main_#t~mem15#1.offset, main_#t~mem16#1.base, main_#t~mem16#1.offset, main_#t~mem17#1.base, main_#t~mem17#1.offset, main_#t~mem18#1.base, main_#t~mem18#1.offset, main_#t~nondet19#1, main_#t~short20#1, main_#t~malloc21#1.base, main_#t~malloc21#1.offset, main_#t~mem22#1.base, main_#t~mem22#1.offset, main_#t~mem23#1.base, main_#t~mem23#1.offset, main_#t~mem24#1.base, main_#t~mem24#1.offset, main_#t~malloc25#1.base, main_#t~malloc25#1.offset, main_#t~mem26#1.base, main_#t~mem26#1.offset, main_#t~mem27#1.base, main_#t~mem27#1.offset, main_#t~mem28#1.base, main_#t~mem28#1.offset, main_#t~malloc29#1.base, main_#t~malloc29#1.offset, main_#t~mem30#1.base, main_#t~mem30#1.offset, main_#t~mem31#1.base, main_#t~mem31#1.offset, main_#t~malloc32#1.base, main_#t~malloc32#1.offset, main_#t~mem33#1.base, main_#t~mem33#1.offset, main_~root~0#1.base, main_~root~0#1.offset, main_~n~0#1.base, main_~n~0#1.offset, main_~s~0#1.base, main_~s~0#1.offset, main_~st~0#1.base, main_~st~0#1.offset;call main_#t~malloc3#1.base, main_#t~malloc3#1.offset := #Ultimate.allocOnHeap(12);main_~root~0#1.base, main_~root~0#1.offset := main_#t~malloc3#1.base, main_#t~malloc3#1.offset;havoc main_#t~malloc3#1.base, main_#t~malloc3#1.offset;havoc main_~n~0#1.base, main_~n~0#1.offset;call write~$Pointer$#1(0, 0, main_~root~0#1.base, main_~root~0#1.offset, 4);call write~$Pointer$#1(0, 0, main_~root~0#1.base, 4 + main_~root~0#1.offset, 4);call write~$Pointer$#1(0, 0, main_~root~0#1.base, 8 + main_~root~0#1.offset, 4); 199#L552-4 [2024-10-31 22:06:52,420 INFO L747 eck$LassoCheckResult]: Loop: 199#L552-4 havoc main_#t~nondet4#1; 200#L538-1 assume !!(0 != main_#t~nondet4#1);havoc main_#t~nondet4#1;main_~n~0#1.base, main_~n~0#1.offset := main_~root~0#1.base, main_~root~0#1.offset; 221#L541-2 call main_#t~mem5#1.base, main_#t~mem5#1.offset := read~$Pointer$#1(main_~n~0#1.base, main_~n~0#1.offset, 4);main_#t~short7#1 := main_#t~mem5#1.base != 0 || main_#t~mem5#1.offset != 0; 197#L540-1 assume !main_#t~short7#1; 198#L540-3 assume !main_#t~short7#1;havoc main_#t~mem5#1.base, main_#t~mem5#1.offset;havoc main_#t~mem6#1.base, main_#t~mem6#1.offset;havoc main_#t~short7#1; 207#L540-5 call main_#t~mem11#1.base, main_#t~mem11#1.offset := read~$Pointer$#1(main_~n~0#1.base, main_~n~0#1.offset, 4);main_#t~short13#1 := main_#t~mem11#1.base == 0 && main_#t~mem11#1.offset == 0; 229#L546 assume main_#t~short13#1;havoc main_#t~nondet12#1;main_#t~short13#1 := 0 != main_#t~nondet12#1; 227#L546-2 assume !main_#t~short13#1;havoc main_#t~mem11#1.base, main_#t~mem11#1.offset;havoc main_#t~nondet12#1;havoc main_#t~short13#1; 208#L546-4 call main_#t~mem18#1.base, main_#t~mem18#1.offset := read~$Pointer$#1(main_~n~0#1.base, 4 + main_~n~0#1.offset, 4);main_#t~short20#1 := main_#t~mem18#1.base == 0 && main_#t~mem18#1.offset == 0; 209#L552 assume main_#t~short20#1;havoc main_#t~nondet19#1;main_#t~short20#1 := 0 != main_#t~nondet19#1; 212#L552-2 assume !main_#t~short20#1;havoc main_#t~mem18#1.base, main_#t~mem18#1.offset;havoc main_#t~nondet19#1;havoc main_#t~short20#1; 199#L552-4 [2024-10-31 22:06:52,420 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:06:52,420 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 4 times [2024-10-31 22:06:52,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:06:52,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909232558] [2024-10-31 22:06:52,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:06:52,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:06:52,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:06:52,439 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-31 22:06:52,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:06:52,447 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-31 22:06:52,448 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:06:52,448 INFO L85 PathProgramCache]: Analyzing trace with hash -170128228, now seen corresponding path program 1 times [2024-10-31 22:06:52,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:06:52,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564807727] [2024-10-31 22:06:52,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:06:52,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:06:52,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:06:52,456 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-31 22:06:52,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:06:52,463 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-31 22:06:52,464 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:06:52,464 INFO L85 PathProgramCache]: Analyzing trace with hash -546604134, now seen corresponding path program 1 times [2024-10-31 22:06:52,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:06:52,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828285079] [2024-10-31 22:06:52,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:06:52,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:06:52,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:06:52,499 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-31 22:06:52,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:06:52,511 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-31 22:06:53,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:06:53,521 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-31 22:06:53,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:06:53,585 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 31.10 10:06:53 BoogieIcfgContainer [2024-10-31 22:06:53,587 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2024-10-31 22:06:53,588 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-31 22:06:53,588 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-31 22:06:53,588 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-31 22:06:53,589 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:06:18" (3/4) ... [2024-10-31 22:06:53,591 INFO L139 WitnessPrinter]: Generating witness for non-termination counterexample [2024-10-31 22:06:53,633 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_982d8ded-70bd-413e-b0ab-1d4cc80135b5/bin/uautomizer-verify-4GaUIPS5ZU/witness.graphml [2024-10-31 22:06:53,633 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-31 22:06:53,634 INFO L158 Benchmark]: Toolchain (without parser) took 36809.36ms. Allocated memory was 174.1MB in the beginning and 245.4MB in the end (delta: 71.3MB). Free memory was 133.6MB in the beginning and 146.8MB in the end (delta: -13.2MB). Peak memory consumption was 60.1MB. Max. memory is 16.1GB. [2024-10-31 22:06:53,635 INFO L158 Benchmark]: CDTParser took 0.35ms. Allocated memory is still 174.1MB. Free memory was 145.1MB in the beginning and 144.9MB in the end (delta: 186.1kB). There was no memory consumed. Max. memory is 16.1GB. [2024-10-31 22:06:53,635 INFO L158 Benchmark]: CACSL2BoogieTranslator took 638.85ms. Allocated memory is still 174.1MB. Free memory was 133.5MB in the beginning and 113.3MB in the end (delta: 20.2MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2024-10-31 22:06:53,639 INFO L158 Benchmark]: Boogie Procedure Inliner took 63.00ms. Allocated memory is still 174.1MB. Free memory was 113.3MB in the beginning and 111.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-31 22:06:53,640 INFO L158 Benchmark]: Boogie Preprocessor took 93.00ms. Allocated memory is still 174.1MB. Free memory was 111.3MB in the beginning and 108.3MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-31 22:06:53,640 INFO L158 Benchmark]: RCFGBuilder took 887.85ms. Allocated memory is still 174.1MB. Free memory was 107.7MB in the beginning and 81.2MB in the end (delta: 26.5MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2024-10-31 22:06:53,641 INFO L158 Benchmark]: BuchiAutomizer took 35073.91ms. Allocated memory was 174.1MB in the beginning and 245.4MB in the end (delta: 71.3MB). Free memory was 81.1MB in the beginning and 147.9MB in the end (delta: -66.8MB). Peak memory consumption was 7.6MB. Max. memory is 16.1GB. [2024-10-31 22:06:53,641 INFO L158 Benchmark]: Witness Printer took 46.04ms. Allocated memory is still 245.4MB. Free memory was 147.9MB in the beginning and 146.8MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2024-10-31 22:06:53,643 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35ms. Allocated memory is still 174.1MB. Free memory was 145.1MB in the beginning and 144.9MB in the end (delta: 186.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 638.85ms. Allocated memory is still 174.1MB. Free memory was 133.5MB in the beginning and 113.3MB in the end (delta: 20.2MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 63.00ms. Allocated memory is still 174.1MB. Free memory was 113.3MB in the beginning and 111.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 93.00ms. Allocated memory is still 174.1MB. Free memory was 111.3MB in the beginning and 108.3MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 887.85ms. Allocated memory is still 174.1MB. Free memory was 107.7MB in the beginning and 81.2MB in the end (delta: 26.5MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * BuchiAutomizer took 35073.91ms. Allocated memory was 174.1MB in the beginning and 245.4MB in the end (delta: 71.3MB). Free memory was 81.1MB in the beginning and 147.9MB in the end (delta: -66.8MB). Peak memory consumption was 7.6MB. Max. memory is 16.1GB. * Witness Printer took 46.04ms. Allocated memory is still 245.4MB. Free memory was 147.9MB in the beginning and 146.8MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 3 terminating modules (3 trivial, 0 deterministic, 0 nondeterministic) and one nonterminating remainder module.3 modules have a trivial ranking function, the largest among these consists of 5 locations. The remainder module has 36 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 34.9s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 34.2s. Construction of modules took 0.4s. Büchi inclusion checks took 0.2s. Highest rank in rank-based complementation 0. Minimization of det autom 3. Minimization of nondet autom 0. Automata minimization 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 11 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 40 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 40 mSDsluCounter, 173 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 92 mSDsCounter, 8 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 118 IncrementalHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 8 mSolverCounterUnsat, 81 mSDtfsCounter, 118 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont1 unkn0 SFLI2 SFLT0 conc1 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - LassoShapedNonTerminationArgument [Line: 538]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite program execution. Stem: [L534] struct TreeNode* root = malloc(sizeof(*root)), *n; [L534] struct TreeNode* root = malloc(sizeof(*root)), *n; [L535] root->left = ((void *)0) [L536] root->right = ((void *)0) [L537] root->parent = ((void *)0) Loop: [L538] COND TRUE __VERIFIER_nondet_int() [L539] n = root [L540] EXPR n->left [L540] n->left && n->right [L540] n->left && n->right [L540] COND FALSE !(n->left && n->right) [L546] EXPR n->left [L546] !n->left && __VERIFIER_nondet_int() [L546] !n->left && __VERIFIER_nondet_int() [L546] COND FALSE !(!n->left && __VERIFIER_nondet_int()) [L552] EXPR n->right [L552] !n->right && __VERIFIER_nondet_int() [L552] !n->right && __VERIFIER_nondet_int() [L552] COND FALSE !(!n->right && __VERIFIER_nondet_int()) End of lasso representation. - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 538]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L534] struct TreeNode* root = malloc(sizeof(*root)), *n; [L534] struct TreeNode* root = malloc(sizeof(*root)), *n; [L535] root->left = ((void *)0) [L536] root->right = ((void *)0) [L537] root->parent = ((void *)0) Loop: [L538] COND TRUE __VERIFIER_nondet_int() [L539] n = root [L540] EXPR n->left [L540] n->left && n->right [L540] n->left && n->right [L540] COND FALSE !(n->left && n->right) [L546] EXPR n->left [L546] !n->left && __VERIFIER_nondet_int() [L546] !n->left && __VERIFIER_nondet_int() [L546] COND FALSE !(!n->left && __VERIFIER_nondet_int()) [L552] EXPR n->right [L552] !n->right && __VERIFIER_nondet_int() [L552] !n->right && __VERIFIER_nondet_int() [L552] COND FALSE !(!n->right && __VERIFIER_nondet_int()) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2024-10-31 22:06:53,679 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_982d8ded-70bd-413e-b0ab-1d4cc80135b5/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM)