./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-restricted-15/ConvLower.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23c48e8b-101b-4d99-9016-8cc8700bea39/bin/uautomizer-J5u9QxTXDZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23c48e8b-101b-4d99-9016-8cc8700bea39/bin/uautomizer-J5u9QxTXDZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23c48e8b-101b-4d99-9016-8cc8700bea39/bin/uautomizer-J5u9QxTXDZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23c48e8b-101b-4d99-9016-8cc8700bea39/bin/uautomizer-J5u9QxTXDZ/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-restricted-15/ConvLower.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23c48e8b-101b-4d99-9016-8cc8700bea39/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23c48e8b-101b-4d99-9016-8cc8700bea39/bin/uautomizer-J5u9QxTXDZ --witnessprinter.witness.filename witness.graphml --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 53380e8569c70a1efdb918ce9289975051e88fe57ba0743af14839dd30306283 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-dbf71c6-m [2022-10-17 11:04:59,635 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 11:04:59,638 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 11:04:59,690 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 11:04:59,690 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 11:04:59,696 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 11:04:59,699 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 11:04:59,703 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 11:04:59,705 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 11:04:59,713 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 11:04:59,714 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 11:04:59,717 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 11:04:59,717 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 11:04:59,720 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 11:04:59,723 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 11:04:59,724 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 11:04:59,726 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 11:04:59,727 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 11:04:59,729 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 11:04:59,739 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 11:04:59,740 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 11:04:59,742 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 11:04:59,745 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 11:04:59,746 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 11:04:59,751 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 11:04:59,751 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 11:04:59,752 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 11:04:59,754 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 11:04:59,754 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 11:04:59,756 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 11:04:59,756 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 11:04:59,757 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 11:04:59,759 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 11:04:59,761 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 11:04:59,762 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 11:04:59,762 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 11:04:59,763 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 11:04:59,763 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 11:04:59,763 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 11:04:59,764 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 11:04:59,765 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 11:04:59,765 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23c48e8b-101b-4d99-9016-8cc8700bea39/bin/uautomizer-J5u9QxTXDZ/config/svcomp-Termination-64bit-Automizer_Default.epf [2022-10-17 11:04:59,804 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 11:04:59,804 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 11:04:59,805 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 11:04:59,805 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 11:04:59,807 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 11:04:59,807 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 11:04:59,807 INFO L138 SettingsManager]: * Use SBE=true [2022-10-17 11:04:59,807 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2022-10-17 11:04:59,807 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2022-10-17 11:04:59,808 INFO L138 SettingsManager]: * Use old map elimination=false [2022-10-17 11:04:59,809 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2022-10-17 11:04:59,809 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2022-10-17 11:04:59,809 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2022-10-17 11:04:59,809 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 11:04:59,809 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-17 11:04:59,810 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 11:04:59,810 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 11:04:59,810 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2022-10-17 11:04:59,810 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2022-10-17 11:04:59,810 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2022-10-17 11:04:59,811 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 11:04:59,811 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2022-10-17 11:04:59,811 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 11:04:59,812 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2022-10-17 11:04:59,813 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 11:04:59,813 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 11:04:59,813 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 11:04:59,813 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-17 11:04:59,815 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-10-17 11:04:59,815 INFO L138 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_23c48e8b-101b-4d99-9016-8cc8700bea39/bin/uautomizer-J5u9QxTXDZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23c48e8b-101b-4d99-9016-8cc8700bea39/bin/uautomizer-J5u9QxTXDZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 53380e8569c70a1efdb918ce9289975051e88fe57ba0743af14839dd30306283 [2022-10-17 11:05:00,113 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 11:05:00,134 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 11:05:00,137 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 11:05:00,139 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 11:05:00,139 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 11:05:00,141 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23c48e8b-101b-4d99-9016-8cc8700bea39/bin/uautomizer-J5u9QxTXDZ/../../sv-benchmarks/c/termination-restricted-15/ConvLower.c [2022-10-17 11:05:00,212 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23c48e8b-101b-4d99-9016-8cc8700bea39/bin/uautomizer-J5u9QxTXDZ/data/3de5fe87c/11b6451e270447f4b0704211bb5189c5/FLAG6c66c3a48 [2022-10-17 11:05:00,719 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 11:05:00,719 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23c48e8b-101b-4d99-9016-8cc8700bea39/sv-benchmarks/c/termination-restricted-15/ConvLower.c [2022-10-17 11:05:00,725 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23c48e8b-101b-4d99-9016-8cc8700bea39/bin/uautomizer-J5u9QxTXDZ/data/3de5fe87c/11b6451e270447f4b0704211bb5189c5/FLAG6c66c3a48 [2022-10-17 11:05:01,093 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23c48e8b-101b-4d99-9016-8cc8700bea39/bin/uautomizer-J5u9QxTXDZ/data/3de5fe87c/11b6451e270447f4b0704211bb5189c5 [2022-10-17 11:05:01,096 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 11:05:01,097 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 11:05:01,099 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 11:05:01,099 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 11:05:01,103 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 11:05:01,104 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 11:05:01" (1/1) ... [2022-10-17 11:05:01,105 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e1feef7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:05:01, skipping insertion in model container [2022-10-17 11:05:01,105 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 11:05:01" (1/1) ... [2022-10-17 11:05:01,113 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 11:05:01,124 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 11:05:01,312 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 11:05:01,315 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 11:05:01,327 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 11:05:01,338 INFO L208 MainTranslator]: Completed translation [2022-10-17 11:05:01,338 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:05:01 WrapperNode [2022-10-17 11:05:01,339 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 11:05:01,340 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 11:05:01,340 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 11:05:01,341 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 11:05:01,350 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:05:01" (1/1) ... [2022-10-17 11:05:01,356 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:05:01" (1/1) ... [2022-10-17 11:05:01,371 INFO L138 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 13 [2022-10-17 11:05:01,371 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 11:05:01,372 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 11:05:01,372 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 11:05:01,372 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 11:05:01,381 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:05:01" (1/1) ... [2022-10-17 11:05:01,381 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:05:01" (1/1) ... [2022-10-17 11:05:01,381 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:05:01" (1/1) ... [2022-10-17 11:05:01,382 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:05:01" (1/1) ... [2022-10-17 11:05:01,383 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:05:01" (1/1) ... [2022-10-17 11:05:01,386 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:05:01" (1/1) ... [2022-10-17 11:05:01,387 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:05:01" (1/1) ... [2022-10-17 11:05:01,388 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:05:01" (1/1) ... [2022-10-17 11:05:01,389 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 11:05:01,389 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 11:05:01,390 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 11:05:01,390 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 11:05:01,391 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:05:01" (1/1) ... [2022-10-17 11:05:01,397 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-10-17 11:05:01,407 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23c48e8b-101b-4d99-9016-8cc8700bea39/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 11:05:01,419 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23c48e8b-101b-4d99-9016-8cc8700bea39/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-10-17 11:05:01,434 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23c48e8b-101b-4d99-9016-8cc8700bea39/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2022-10-17 11:05:01,464 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 11:05:01,464 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 11:05:01,531 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 11:05:01,533 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 11:05:01,596 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 11:05:01,602 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 11:05:01,603 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-10-17 11:05:01,605 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 11:05:01 BoogieIcfgContainer [2022-10-17 11:05:01,605 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 11:05:01,608 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2022-10-17 11:05:01,608 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2022-10-17 11:05:01,612 INFO L275 PluginConnector]: BuchiAutomizer initialized [2022-10-17 11:05:01,613 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-10-17 11:05:01,613 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 17.10 11:05:01" (1/3) ... [2022-10-17 11:05:01,615 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@589cfb41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 17.10 11:05:01, skipping insertion in model container [2022-10-17 11:05:01,615 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-10-17 11:05:01,615 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 11:05:01" (2/3) ... [2022-10-17 11:05:01,616 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@589cfb41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 17.10 11:05:01, skipping insertion in model container [2022-10-17 11:05:01,616 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-10-17 11:05:01,616 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 11:05:01" (3/3) ... [2022-10-17 11:05:01,618 INFO L332 chiAutomizerObserver]: Analyzing ICFG ConvLower.c [2022-10-17 11:05:01,686 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2022-10-17 11:05:01,686 INFO L304 stractBuchiCegarLoop]: Hoare is false [2022-10-17 11:05:01,686 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2022-10-17 11:05:01,686 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2022-10-17 11:05:01,686 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2022-10-17 11:05:01,687 INFO L308 stractBuchiCegarLoop]: Difference is false [2022-10-17 11:05:01,687 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2022-10-17 11:05:01,687 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2022-10-17 11:05:01,691 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:05:01,723 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2022-10-17 11:05:01,723 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-10-17 11:05:01,724 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-10-17 11:05:01,729 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-10-17 11:05:01,729 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2022-10-17 11:05:01,729 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2022-10-17 11:05:01,729 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-17 11:05:01,731 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2022-10-17 11:05:01,731 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-10-17 11:05:01,731 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-10-17 11:05:01,731 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1] [2022-10-17 11:05:01,731 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1] [2022-10-17 11:05:01,739 INFO L748 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true; 8#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~i~0#1;havoc main_~i~0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1; 3#L10-2true [2022-10-17 11:05:01,740 INFO L750 eck$LassoCheckResult]: Loop: 3#L10-2true assume !!(main_~i~0#1 > 5); 5#L10true assume !(10 != main_~i~0#1); 3#L10-2true [2022-10-17 11:05:01,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:05:01,746 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2022-10-17 11:05:01,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:05:01,756 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772715041] [2022-10-17 11:05:01,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:05:01,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:05:01,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 11:05:01,839 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-17 11:05:01,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 11:05:01,877 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-10-17 11:05:01,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:05:01,882 INFO L85 PathProgramCache]: Analyzing trace with hash 1318, now seen corresponding path program 1 times [2022-10-17 11:05:01,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:05:01,883 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903929707] [2022-10-17 11:05:01,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:05:01,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:05:01,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 11:05:01,898 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-17 11:05:01,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 11:05:01,902 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-10-17 11:05:01,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 11:05:01,903 INFO L85 PathProgramCache]: Analyzing trace with hash 925800, now seen corresponding path program 1 times [2022-10-17 11:05:01,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-17 11:05:01,904 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997646097] [2022-10-17 11:05:01,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 11:05:01,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 11:05:01,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 11:05:01,924 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-17 11:05:01,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 11:05:01,933 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-10-17 11:05:02,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 11:05:02,039 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-17 11:05:02,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-17 11:05:02,056 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 17.10 11:05:02 BoogieIcfgContainer [2022-10-17 11:05:02,057 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2022-10-17 11:05:02,064 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-10-17 11:05:02,064 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-10-17 11:05:02,064 INFO L275 PluginConnector]: Witness Printer initialized [2022-10-17 11:05:02,064 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 11:05:01" (3/4) ... [2022-10-17 11:05:02,067 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2022-10-17 11:05:02,132 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23c48e8b-101b-4d99-9016-8cc8700bea39/bin/uautomizer-J5u9QxTXDZ/witness.graphml [2022-10-17 11:05:02,132 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-10-17 11:05:02,134 INFO L158 Benchmark]: Toolchain (without parser) took 1035.48ms. Allocated memory is still 102.8MB. Free memory was 64.6MB in the beginning and 50.5MB in the end (delta: 14.1MB). Peak memory consumption was 11.9MB. Max. memory is 16.1GB. [2022-10-17 11:05:02,135 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 102.8MB. Free memory was 81.0MB in the beginning and 80.9MB in the end (delta: 86.7kB). There was no memory consumed. Max. memory is 16.1GB. [2022-10-17 11:05:02,136 INFO L158 Benchmark]: CACSL2BoogieTranslator took 239.94ms. Allocated memory is still 102.8MB. Free memory was 64.5MB in the beginning and 78.1MB in the end (delta: -13.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-10-17 11:05:02,137 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.36ms. Allocated memory is still 102.8MB. Free memory was 78.1MB in the beginning and 76.9MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2022-10-17 11:05:02,138 INFO L158 Benchmark]: Boogie Preprocessor took 16.66ms. Allocated memory is still 102.8MB. Free memory was 76.9MB in the beginning and 75.9MB in the end (delta: 1.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-10-17 11:05:02,142 INFO L158 Benchmark]: RCFGBuilder took 215.39ms. Allocated memory is still 102.8MB. Free memory was 75.9MB in the beginning and 67.9MB in the end (delta: 8.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-10-17 11:05:02,143 INFO L158 Benchmark]: BuchiAutomizer took 449.25ms. Allocated memory is still 102.8MB. Free memory was 67.6MB in the beginning and 52.0MB in the end (delta: 15.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-10-17 11:05:02,150 INFO L158 Benchmark]: Witness Printer took 68.34ms. Allocated memory is still 102.8MB. Free memory was 52.0MB in the beginning and 50.5MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-10-17 11:05:02,159 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 102.8MB. Free memory was 81.0MB in the beginning and 80.9MB in the end (delta: 86.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 239.94ms. Allocated memory is still 102.8MB. Free memory was 64.5MB in the beginning and 78.1MB in the end (delta: -13.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 31.36ms. Allocated memory is still 102.8MB. Free memory was 78.1MB in the beginning and 76.9MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 16.66ms. Allocated memory is still 102.8MB. Free memory was 76.9MB in the beginning and 75.9MB in the end (delta: 1.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 215.39ms. Allocated memory is still 102.8MB. Free memory was 75.9MB in the beginning and 67.9MB in the end (delta: 8.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 449.25ms. Allocated memory is still 102.8MB. Free memory was 67.6MB in the beginning and 52.0MB in the end (delta: 15.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Witness Printer took 68.34ms. Allocated memory is still 102.8MB. Free memory was 52.0MB in the beginning and 50.5MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. 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 0.3s and 1 iterations. TraceHistogramMax:1. Analysis of lassos took 0.3s. 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: 9]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite program execution. Stem: [L6] int i; [L7] i = __VERIFIER_nondet_int() Loop: [L9] COND TRUE i > 5 [L10] COND FALSE !(i != 10) End of lasso representation. - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 9]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L6] int i; [L7] i = __VERIFIER_nondet_int() Loop: [L9] COND TRUE i > 5 [L10] COND FALSE !(i != 10) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2022-10-17 11:05:02,218 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_23c48e8b-101b-4d99-9016-8cc8700bea39/bin/uautomizer-J5u9QxTXDZ/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)