./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-memory-alloca/Urban-2013WST-Fig1-alloca.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c71da662-f93c-4e3f-8101-c8ad3eb3ee79/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c71da662-f93c-4e3f-8101-c8ad3eb3ee79/bin/uautomizer-verify-VRDe98Ueme/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c71da662-f93c-4e3f-8101-c8ad3eb3ee79/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c71da662-f93c-4e3f-8101-c8ad3eb3ee79/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-memory-alloca/Urban-2013WST-Fig1-alloca.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c71da662-f93c-4e3f-8101-c8ad3eb3ee79/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c71da662-f93c-4e3f-8101-c8ad3eb3ee79/bin/uautomizer-verify-VRDe98Ueme --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 64bit --witnessprinter.graph.data.programhash 81242885777c4393c04c5476f1b6fd444015153a4c531a694fafb6a2f2b53954 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 11:43:43,958 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 11:43:44,101 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c71da662-f93c-4e3f-8101-c8ad3eb3ee79/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Termination-64bit-Automizer_Default.epf [2023-11-26 11:43:44,110 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 11:43:44,111 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 11:43:44,144 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 11:43:44,145 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 11:43:44,145 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 11:43:44,147 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 11:43:44,147 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 11:43:44,149 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 11:43:44,149 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 11:43:44,150 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 11:43:44,151 INFO L151 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2023-11-26 11:43:44,152 INFO L153 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2023-11-26 11:43:44,152 INFO L153 SettingsManager]: * Use old map elimination=false [2023-11-26 11:43:44,153 INFO L153 SettingsManager]: * Use external solver (rank synthesis)=false [2023-11-26 11:43:44,154 INFO L153 SettingsManager]: * Use only trivial implications for array writes=true [2023-11-26 11:43:44,155 INFO L153 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2023-11-26 11:43:44,155 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 11:43:44,156 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2023-11-26 11:43:44,157 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 11:43:44,157 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 11:43:44,158 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2023-11-26 11:43:44,158 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2023-11-26 11:43:44,159 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2023-11-26 11:43:44,159 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-26 11:43:44,160 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 11:43:44,160 INFO L153 SettingsManager]: * Assume nondeterminstic values are in range=false [2023-11-26 11:43:44,161 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 11:43:44,162 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 11:43:44,162 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 11:43:44,163 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 11:43:44,163 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 11:43:44,164 INFO L151 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2023-11-26 11:43:44,164 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_c71da662-f93c-4e3f-8101-c8ad3eb3ee79/bin/uautomizer-verify-VRDe98Ueme/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c71da662-f93c-4e3f-8101-c8ad3eb3ee79/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 81242885777c4393c04c5476f1b6fd444015153a4c531a694fafb6a2f2b53954 [2023-11-26 11:43:44,497 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 11:43:44,531 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 11:43:44,535 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 11:43:44,536 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 11:43:44,537 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 11:43:44,539 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c71da662-f93c-4e3f-8101-c8ad3eb3ee79/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/termination-memory-alloca/Urban-2013WST-Fig1-alloca.i [2023-11-26 11:43:47,645 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 11:43:47,995 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 11:43:47,996 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c71da662-f93c-4e3f-8101-c8ad3eb3ee79/sv-benchmarks/c/termination-memory-alloca/Urban-2013WST-Fig1-alloca.i [2023-11-26 11:43:48,024 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c71da662-f93c-4e3f-8101-c8ad3eb3ee79/bin/uautomizer-verify-VRDe98Ueme/data/2ff5c630c/e43ddc8eb0154a948f209ab3b996304b/FLAG9a6b6087c [2023-11-26 11:43:48,048 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c71da662-f93c-4e3f-8101-c8ad3eb3ee79/bin/uautomizer-verify-VRDe98Ueme/data/2ff5c630c/e43ddc8eb0154a948f209ab3b996304b [2023-11-26 11:43:48,056 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 11:43:48,057 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 11:43:48,061 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 11:43:48,062 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 11:43:48,070 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 11:43:48,070 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:43:48" (1/1) ... [2023-11-26 11:43:48,072 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15fde023 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:43:48, skipping insertion in model container [2023-11-26 11:43:48,072 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:43:48" (1/1) ... [2023-11-26 11:43:48,142 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 11:43:48,450 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:43:48,470 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 11:43:48,551 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:43:48,588 INFO L206 MainTranslator]: Completed translation [2023-11-26 11:43:48,589 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:43:48 WrapperNode [2023-11-26 11:43:48,589 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 11:43:48,591 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 11:43:48,591 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 11:43:48,591 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 11:43:48,600 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:43:48" (1/1) ... [2023-11-26 11:43:48,624 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:43:48" (1/1) ... [2023-11-26 11:43:48,648 INFO L138 Inliner]: procedures = 110, calls = 9, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 25 [2023-11-26 11:43:48,649 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 11:43:48,651 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 11:43:48,651 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 11:43:48,652 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 11:43:48,664 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:43:48" (1/1) ... [2023-11-26 11:43:48,664 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:43:48" (1/1) ... [2023-11-26 11:43:48,667 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:43:48" (1/1) ... [2023-11-26 11:43:48,685 INFO L175 MemorySlicer]: Split 5 memory accesses to 1 slices as follows [5]. 100 percent of accesses are in the largest equivalence class. The 0 initializations are split as follows [0]. The 2 writes are split as follows [2]. [2023-11-26 11:43:48,686 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:43:48" (1/1) ... [2023-11-26 11:43:48,686 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:43:48" (1/1) ... [2023-11-26 11:43:48,691 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:43:48" (1/1) ... [2023-11-26 11:43:48,695 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:43:48" (1/1) ... [2023-11-26 11:43:48,696 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:43:48" (1/1) ... [2023-11-26 11:43:48,698 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:43:48" (1/1) ... [2023-11-26 11:43:48,700 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 11:43:48,701 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 11:43:48,701 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 11:43:48,702 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 11:43:48,703 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:43:48" (1/1) ... [2023-11-26 11:43:48,710 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2023-11-26 11:43:48,733 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c71da662-f93c-4e3f-8101-c8ad3eb3ee79/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:43:48,752 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c71da662-f93c-4e3f-8101-c8ad3eb3ee79/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2023-11-26 11:43:48,759 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c71da662-f93c-4e3f-8101-c8ad3eb3ee79/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2023-11-26 11:43:48,801 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-26 11:43:48,801 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-26 11:43:48,802 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-26 11:43:48,803 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-26 11:43:48,804 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 11:43:48,804 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 11:43:48,939 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 11:43:48,941 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 11:43:49,059 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 11:43:49,069 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 11:43:49,069 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-26 11:43:49,071 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:43:49 BoogieIcfgContainer [2023-11-26 11:43:49,072 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 11:43:49,073 INFO L112 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2023-11-26 11:43:49,073 INFO L270 PluginConnector]: Initializing BuchiAutomizer... [2023-11-26 11:43:49,077 INFO L274 PluginConnector]: BuchiAutomizer initialized [2023-11-26 11:43:49,078 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-26 11:43:49,078 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 26.11 11:43:48" (1/3) ... [2023-11-26 11:43:49,079 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@73b2c553 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 26.11 11:43:49, skipping insertion in model container [2023-11-26 11:43:49,079 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-26 11:43:49,079 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:43:48" (2/3) ... [2023-11-26 11:43:49,080 INFO L204 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@73b2c553 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 26.11 11:43:49, skipping insertion in model container [2023-11-26 11:43:49,080 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2023-11-26 11:43:49,080 INFO L184 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:43:49" (3/3) ... [2023-11-26 11:43:49,082 INFO L332 chiAutomizerObserver]: Analyzing ICFG Urban-2013WST-Fig1-alloca.i [2023-11-26 11:43:49,144 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2023-11-26 11:43:49,145 INFO L304 stractBuchiCegarLoop]: Hoare is false [2023-11-26 11:43:49,145 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2023-11-26 11:43:49,145 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2023-11-26 11:43:49,145 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2023-11-26 11:43:49,145 INFO L308 stractBuchiCegarLoop]: Difference is false [2023-11-26 11:43:49,145 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2023-11-26 11:43:49,146 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2023-11-26 11:43:49,150 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 9 states, 8 states have (on average 1.375) internal successors, (11), 8 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) [2023-11-26 11:43:49,195 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2023-11-26 11:43:49,195 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-26 11:43:49,195 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-26 11:43:49,200 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-11-26 11:43:49,200 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2023-11-26 11:43:49,200 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2023-11-26 11:43:49,200 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 9 states, 8 states have (on average 1.375) internal successors, (11), 8 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) [2023-11-26 11:43:49,202 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2023-11-26 11:43:49,202 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2023-11-26 11:43:49,202 INFO L119 BuchiIsEmpty]: Starting construction of run [2023-11-26 11:43:49,202 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2023-11-26 11:43:49,202 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2023-11-26 11:43:49,211 INFO L748 eck$LassoCheckResult]: Stem: 5#$Ultimate##0true assume { :begin_inline_ULTIMATE.init } true;assume 0 == #valid[0];assume 0 < #StackHeapBarrier; 8#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~malloc2#1.base, main_#t~malloc2#1.offset, main_#t~nondet3#1, main_#t~mem5#1, main_#t~mem6#1, main_#t~mem4#1, main_~x~0#1.base, main_~x~0#1.offset;call main_#t~malloc2#1.base, main_#t~malloc2#1.offset := #Ultimate.allocOnStack(4);main_~x~0#1.base, main_~x~0#1.offset := main_#t~malloc2#1.base, main_#t~malloc2#1.offset;havoc main_#t~nondet3#1;call write~int#0(main_#t~nondet3#1, main_~x~0#1.base, main_~x~0#1.offset, 4);havoc main_#t~nondet3#1; 2#L552-2true [2023-11-26 11:43:49,212 INFO L750 eck$LassoCheckResult]: Loop: 2#L552-2true call main_#t~mem4#1 := read~int#0(main_~x~0#1.base, main_~x~0#1.offset, 4); 6#L551-1true assume !!(main_#t~mem4#1 <= 10);havoc main_#t~mem4#1;call main_#t~mem5#1 := read~int#0(main_~x~0#1.base, main_~x~0#1.offset, 4); 9#L552true assume !(main_#t~mem5#1 > 6);havoc main_#t~mem5#1; 2#L552-2true [2023-11-26 11:43:49,233 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:43:49,233 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2023-11-26 11:43:49,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:43:49,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566891177] [2023-11-26 11:43:49,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:43:49,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:43:49,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 11:43:49,365 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 11:43:49,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 11:43:49,410 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-26 11:43:49,415 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:43:49,415 INFO L85 PathProgramCache]: Analyzing trace with hash 36907, now seen corresponding path program 1 times [2023-11-26 11:43:49,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:43:49,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020600273] [2023-11-26 11:43:49,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:43:49,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:43:49,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 11:43:49,453 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 11:43:49,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 11:43:49,462 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-26 11:43:49,464 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:43:49,464 INFO L85 PathProgramCache]: Analyzing trace with hash 28695849, now seen corresponding path program 1 times [2023-11-26 11:43:49,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:43:49,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032273198] [2023-11-26 11:43:49,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:43:49,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:43:49,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 11:43:49,492 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 11:43:49,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 11:43:49,511 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-26 11:43:49,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 11:43:49,864 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 11:43:49,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 11:43:49,894 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 26.11 11:43:49 BoogieIcfgContainer [2023-11-26 11:43:49,895 INFO L131 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2023-11-26 11:43:49,895 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-26 11:43:49,896 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-26 11:43:49,896 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-26 11:43:49,897 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:43:49" (3/4) ... [2023-11-26 11:43:49,898 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2023-11-26 11:43:49,936 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c71da662-f93c-4e3f-8101-c8ad3eb3ee79/bin/uautomizer-verify-VRDe98Ueme/witness.graphml [2023-11-26 11:43:49,936 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-26 11:43:49,938 INFO L158 Benchmark]: Toolchain (without parser) took 1880.30ms. Allocated memory was 123.7MB in the beginning and 155.2MB in the end (delta: 31.5MB). Free memory was 77.7MB in the beginning and 99.6MB in the end (delta: -21.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-26 11:43:49,939 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 123.7MB. Free memory was 71.1MB in the beginning and 71.0MB in the end (delta: 97.9kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-26 11:43:49,940 INFO L158 Benchmark]: CACSL2BoogieTranslator took 528.21ms. Allocated memory is still 123.7MB. Free memory was 77.3MB in the beginning and 61.8MB in the end (delta: 15.5MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-26 11:43:49,941 INFO L158 Benchmark]: Boogie Procedure Inliner took 59.41ms. Allocated memory is still 123.7MB. Free memory was 61.8MB in the beginning and 60.0MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-26 11:43:49,942 INFO L158 Benchmark]: Boogie Preprocessor took 49.65ms. Allocated memory is still 123.7MB. Free memory was 60.0MB in the beginning and 58.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-26 11:43:49,942 INFO L158 Benchmark]: RCFGBuilder took 370.63ms. Allocated memory is still 123.7MB. Free memory was 58.4MB in the beginning and 48.8MB in the end (delta: 9.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-26 11:43:49,943 INFO L158 Benchmark]: BuchiAutomizer took 821.96ms. Allocated memory was 123.7MB in the beginning and 155.2MB in the end (delta: 31.5MB). Free memory was 48.8MB in the beginning and 101.7MB in the end (delta: -52.9MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-26 11:43:49,944 INFO L158 Benchmark]: Witness Printer took 41.18ms. Allocated memory is still 155.2MB. Free memory was 101.7MB in the beginning and 99.6MB in the end (delta: 2.1MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-26 11:43:49,948 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 123.7MB. Free memory was 71.1MB in the beginning and 71.0MB in the end (delta: 97.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 528.21ms. Allocated memory is still 123.7MB. Free memory was 77.3MB in the beginning and 61.8MB in the end (delta: 15.5MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 59.41ms. Allocated memory is still 123.7MB. Free memory was 61.8MB in the beginning and 60.0MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 49.65ms. Allocated memory is still 123.7MB. Free memory was 60.0MB in the beginning and 58.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 370.63ms. Allocated memory is still 123.7MB. Free memory was 58.4MB in the beginning and 48.8MB in the end (delta: 9.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * BuchiAutomizer took 821.96ms. Allocated memory was 123.7MB in the beginning and 155.2MB in the end (delta: 31.5MB). Free memory was 48.8MB in the beginning and 101.7MB in the end (delta: -52.9MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 41.18ms. Allocated memory is still 155.2MB. Free memory was 101.7MB in the beginning and 99.6MB in the end (delta: 2.1MB). 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 Trivial decomposition into one nonterminating module. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 0.7s and 1 iterations. TraceHistogramMax:1. Analysis of lassos took 0.6s. Construction of modules took 0.0s. Büchi inclusion checks took 0.0s. Highest rank in rank-based complementation 0. Minimization of det autom 0. Minimization of nondet autom 0. Automata minimization No data available. 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: LassoAnalysisResults: nont1 unkn0 SFLI0 SFLT0 conc0 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: 551]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite program execution. Stem: [L549] int* x = __builtin_alloca (sizeof(int)); [L550] *x = __VERIFIER_nondet_int() Loop: [L551] EXPR \read(*x) [L551] COND TRUE *x <= 10 [L552] EXPR \read(*x) [L552] COND FALSE !(*x > 6) End of lasso representation. - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 551]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L549] int* x = __builtin_alloca (sizeof(int)); [L550] *x = __VERIFIER_nondet_int() Loop: [L551] EXPR \read(*x) [L551] COND TRUE *x <= 10 [L552] EXPR \read(*x) [L552] COND FALSE !(*x > 6) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2023-11-26 11:43:49,975 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c71da662-f93c-4e3f-8101-c8ad3eb3ee79/bin/uautomizer-verify-VRDe98Ueme/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)