./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/loop-acceleration/phases_2-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_580da335-5120-4469-a490-fa30f4762dd6/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_580da335-5120-4469-a490-fa30f4762dd6/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_580da335-5120-4469-a490-fa30f4762dd6/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_580da335-5120-4469-a490-fa30f4762dd6/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/loop-acceleration/phases_2-1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_580da335-5120-4469-a490-fa30f4762dd6/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_580da335-5120-4469-a490-fa30f4762dd6/bin/uautomizer --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 32bit --witnessprinter.graph.data.programhash 62c8372256c861b4f8257978673ab17e2a1f1b99 ............................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM) --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 03:17:36,992 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 03:17:36,995 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 03:17:37,046 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 03:17:37,047 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 03:17:37,052 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 03:17:37,055 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 03:17:37,059 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 03:17:37,063 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 03:17:37,069 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 03:17:37,070 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 03:17:37,080 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 03:17:37,081 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 03:17:37,085 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 03:17:37,086 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 03:17:37,089 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 03:17:37,090 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 03:17:37,095 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 03:17:37,099 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 03:17:37,107 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 03:17:37,110 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 03:17:37,111 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 03:17:37,113 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 03:17:37,114 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 03:17:37,124 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 03:17:37,124 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 03:17:37,125 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 03:17:37,127 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 03:17:37,128 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 03:17:37,129 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 03:17:37,129 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 03:17:37,131 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 03:17:37,133 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 03:17:37,134 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 03:17:37,135 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 03:17:37,135 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 03:17:37,136 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 03:17:37,136 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 03:17:37,137 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 03:17:37,138 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 03:17:37,140 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 03:17:37,143 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_580da335-5120-4469-a490-fa30f4762dd6/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf [2020-11-28 03:17:37,190 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 03:17:37,190 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 03:17:37,192 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 03:17:37,193 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 03:17:37,193 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 03:17:37,193 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-11-28 03:17:37,193 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-11-28 03:17:37,194 INFO L138 SettingsManager]: * Use old map elimination=false [2020-11-28 03:17:37,194 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-11-28 03:17:37,194 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-11-28 03:17:37,195 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-11-28 03:17:37,196 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 03:17:37,196 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 03:17:37,196 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-28 03:17:37,196 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 03:17:37,197 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 03:17:37,197 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 03:17:37,197 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-11-28 03:17:37,197 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-11-28 03:17:37,197 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-11-28 03:17:37,198 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 03:17:37,198 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 03:17:37,198 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-11-28 03:17:37,198 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 03:17:37,198 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-11-28 03:17:37,199 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 03:17:37,199 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 03:17:37,199 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-11-28 03:17:37,199 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 03:17:37,202 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 03:17:37,202 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 03:17:37,202 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-11-28 03:17:37,204 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-11-28 03:17:37,204 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-vcloud-master/worker/run_dir_580da335-5120-4469-a490-fa30f4762dd6/bin/uautomizer/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_580da335-5120-4469-a490-fa30f4762dd6/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 62c8372256c861b4f8257978673ab17e2a1f1b99 [2020-11-28 03:17:37,459 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 03:17:37,497 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 03:17:37,501 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 03:17:37,503 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 03:17:37,504 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 03:17:37,505 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_580da335-5120-4469-a490-fa30f4762dd6/bin/uautomizer/../../sv-benchmarks/c/loop-acceleration/phases_2-1.c [2020-11-28 03:17:37,584 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_580da335-5120-4469-a490-fa30f4762dd6/bin/uautomizer/data/71006c775/46fcc603886247de88a7779d8a05fe05/FLAG43f170620 [2020-11-28 03:17:38,073 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 03:17:38,074 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_580da335-5120-4469-a490-fa30f4762dd6/sv-benchmarks/c/loop-acceleration/phases_2-1.c [2020-11-28 03:17:38,085 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_580da335-5120-4469-a490-fa30f4762dd6/bin/uautomizer/data/71006c775/46fcc603886247de88a7779d8a05fe05/FLAG43f170620 [2020-11-28 03:17:38,469 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_580da335-5120-4469-a490-fa30f4762dd6/bin/uautomizer/data/71006c775/46fcc603886247de88a7779d8a05fe05 [2020-11-28 03:17:38,472 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 03:17:38,474 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 03:17:38,480 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 03:17:38,481 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 03:17:38,484 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 03:17:38,485 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:17:38" (1/1) ... [2020-11-28 03:17:38,487 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41392fce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:17:38, skipping insertion in model container [2020-11-28 03:17:38,488 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:17:38" (1/1) ... [2020-11-28 03:17:38,507 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 03:17:38,524 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 03:17:38,706 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:17:38,716 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 03:17:38,733 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:17:38,750 INFO L208 MainTranslator]: Completed translation [2020-11-28 03:17:38,750 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:17:38 WrapperNode [2020-11-28 03:17:38,750 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 03:17:38,752 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 03:17:38,752 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 03:17:38,752 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 03:17:38,761 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:17:38" (1/1) ... [2020-11-28 03:17:38,769 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:17:38" (1/1) ... [2020-11-28 03:17:38,789 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 03:17:38,790 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 03:17:38,790 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 03:17:38,790 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 03:17:38,799 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:17:38" (1/1) ... [2020-11-28 03:17:38,800 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:17:38" (1/1) ... [2020-11-28 03:17:38,801 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:17:38" (1/1) ... [2020-11-28 03:17:38,802 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:17:38" (1/1) ... [2020-11-28 03:17:38,805 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:17:38" (1/1) ... [2020-11-28 03:17:38,809 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:17:38" (1/1) ... [2020-11-28 03:17:38,810 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:17:38" (1/1) ... [2020-11-28 03:17:38,812 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 03:17:38,813 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 03:17:38,813 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 03:17:38,814 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 03:17:38,815 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:17:38" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_580da335-5120-4469-a490-fa30f4762dd6/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:17:38,908 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 03:17:38,908 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 03:17:38,908 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 03:17:38,908 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 03:17:39,146 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 03:17:39,146 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-11-28 03:17:39,148 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:17:39 BoogieIcfgContainer [2020-11-28 03:17:39,148 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 03:17:39,149 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-11-28 03:17:39,149 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-11-28 03:17:39,153 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-11-28 03:17:39,154 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-28 03:17:39,154 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.11 03:17:38" (1/3) ... [2020-11-28 03:17:39,156 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@a86bd4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 03:17:39, skipping insertion in model container [2020-11-28 03:17:39,156 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-28 03:17:39,157 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:17:38" (2/3) ... [2020-11-28 03:17:39,157 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@a86bd4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 03:17:39, skipping insertion in model container [2020-11-28 03:17:39,157 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-28 03:17:39,157 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:17:39" (3/3) ... [2020-11-28 03:17:39,159 INFO L373 chiAutomizerObserver]: Analyzing ICFG phases_2-1.c [2020-11-28 03:17:39,243 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-11-28 03:17:39,243 INFO L360 BuchiCegarLoop]: Hoare is false [2020-11-28 03:17:39,243 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-11-28 03:17:39,243 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 03:17:39,243 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 03:17:39,244 INFO L364 BuchiCegarLoop]: Difference is false [2020-11-28 03:17:39,244 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 03:17:39,244 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-11-28 03:17:39,258 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states. [2020-11-28 03:17:39,290 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-11-28 03:17:39,291 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 03:17:39,291 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 03:17:39,297 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2020-11-28 03:17:39,298 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-11-28 03:17:39,298 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-11-28 03:17:39,298 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states. [2020-11-28 03:17:39,300 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-11-28 03:17:39,300 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 03:17:39,300 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 03:17:39,301 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2020-11-28 03:17:39,301 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-11-28 03:17:39,321 INFO L794 eck$LassoCheckResult]: Stem: 6#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(13);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 3#L-1true havoc main_#res;havoc main_#t~nondet7, main_#t~post8, main_~x~0, main_~y~0;main_~x~0 := 1;main_~y~0 := main_#t~nondet7;havoc main_#t~nondet7; 4#L21true assume !!(main_~y~0 % 4294967296 > 0); 8#L24-2true [2020-11-28 03:17:39,322 INFO L796 eck$LassoCheckResult]: Loop: 8#L24-2true assume !!(main_~x~0 % 4294967296 < main_~y~0 % 4294967296); 11#L24true assume main_~x~0 % 4294967296 < (if main_~y~0 % 4294967296 < 0 && 0 != main_~y~0 % 4294967296 % (main_~x~0 % 4294967296) then (if main_~x~0 % 4294967296 < 0 then main_~y~0 % 4294967296 / (main_~x~0 % 4294967296) - 1 else 1 + main_~y~0 % 4294967296 / (main_~x~0 % 4294967296)) else main_~y~0 % 4294967296 / (main_~x~0 % 4294967296)) % 4294967296;main_~x~0 := main_~x~0 * main_~x~0; 8#L24-2true [2020-11-28 03:17:39,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:17:39,329 INFO L82 PathProgramCache]: Analyzing trace with hash 29860, now seen corresponding path program 1 times [2020-11-28 03:17:39,339 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:17:39,340 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006736349] [2020-11-28 03:17:39,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:17:39,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:17:39,476 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:17:39,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:17:39,521 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:17:39,557 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:17:39,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:17:39,562 INFO L82 PathProgramCache]: Analyzing trace with hash 1476, now seen corresponding path program 1 times [2020-11-28 03:17:39,563 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:17:39,564 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239674164] [2020-11-28 03:17:39,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:17:39,577 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 03:17:39,578 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [519812684] [2020-11-28 03:17:39,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_580da335-5120-4469-a490-fa30f4762dd6/bin/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:17:39,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:17:39,627 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:17:39,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:17:39,639 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:17:39,654 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:17:39,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:17:39,656 INFO L82 PathProgramCache]: Analyzing trace with hash 28695975, now seen corresponding path program 1 times [2020-11-28 03:17:39,657 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:17:39,660 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466215889] [2020-11-28 03:17:39,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:17:39,674 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 03:17:39,675 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [446010450] [2020-11-28 03:17:39,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_580da335-5120-4469-a490-fa30f4762dd6/bin/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:17:39,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:17:39,762 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:17:39,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:17:39,785 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:17:39,793 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:17:40,250 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 59 [2020-11-28 03:17:40,426 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 57 [2020-11-28 03:17:40,464 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.11 03:17:40 BoogieIcfgContainer [2020-11-28 03:17:40,464 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-11-28 03:17:40,466 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 03:17:40,466 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 03:17:40,466 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 03:17:40,467 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:17:39" (3/4) ... [2020-11-28 03:17:40,471 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2020-11-28 03:17:40,524 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_580da335-5120-4469-a490-fa30f4762dd6/bin/uautomizer/witness.graphml [2020-11-28 03:17:40,524 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 03:17:40,526 INFO L168 Benchmark]: Toolchain (without parser) took 2051.88 ms. Allocated memory is still 111.1 MB. Free memory was 83.3 MB in the beginning and 55.8 MB in the end (delta: 27.5 MB). Peak memory consumption was 28.6 MB. Max. memory is 16.1 GB. [2020-11-28 03:17:40,527 INFO L168 Benchmark]: CDTParser took 0.84 ms. Allocated memory is still 79.7 MB. Free memory is still 37.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:17:40,529 INFO L168 Benchmark]: CACSL2BoogieTranslator took 270.57 ms. Allocated memory is still 111.1 MB. Free memory was 83.0 MB in the beginning and 89.2 MB in the end (delta: -6.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 03:17:40,530 INFO L168 Benchmark]: Boogie Procedure Inliner took 37.45 ms. Allocated memory is still 111.1 MB. Free memory was 89.2 MB in the beginning and 87.9 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:17:40,531 INFO L168 Benchmark]: Boogie Preprocessor took 22.52 ms. Allocated memory is still 111.1 MB. Free memory was 87.6 MB in the beginning and 86.9 MB in the end (delta: 699.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:17:40,535 INFO L168 Benchmark]: RCFGBuilder took 335.10 ms. Allocated memory is still 111.1 MB. Free memory was 86.6 MB in the beginning and 75.6 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-28 03:17:40,536 INFO L168 Benchmark]: BuchiAutomizer took 1314.79 ms. Allocated memory is still 111.1 MB. Free memory was 75.4 MB in the beginning and 57.3 MB in the end (delta: 18.0 MB). Peak memory consumption was 21.2 MB. Max. memory is 16.1 GB. [2020-11-28 03:17:40,536 INFO L168 Benchmark]: Witness Printer took 58.75 ms. Allocated memory is still 111.1 MB. Free memory was 57.3 MB in the beginning and 55.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:17:40,542 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.84 ms. Allocated memory is still 79.7 MB. Free memory is still 37.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 270.57 ms. Allocated memory is still 111.1 MB. Free memory was 83.0 MB in the beginning and 89.2 MB in the end (delta: -6.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 37.45 ms. Allocated memory is still 111.1 MB. Free memory was 89.2 MB in the beginning and 87.9 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 22.52 ms. Allocated memory is still 111.1 MB. Free memory was 87.6 MB in the beginning and 86.9 MB in the end (delta: 699.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 335.10 ms. Allocated memory is still 111.1 MB. Free memory was 86.6 MB in the beginning and 75.6 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 1314.79 ms. Allocated memory is still 111.1 MB. Free memory was 75.4 MB in the beginning and 57.3 MB in the end (delta: 18.0 MB). Peak memory consumption was 21.2 MB. Max. memory is 16.1 GB. * Witness Printer took 58.75 ms. Allocated memory is still 111.1 MB. Free memory was 57.3 MB in the beginning and 55.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * 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 1.2s and 1 iterations. TraceHistogramMax:1. Analysis of lassos took 1.1s. 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: No data available 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 - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 23]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=1} State at position 1 is {NULL=0, NULL=0, NULL=0, NULL=4, NULL=0, \result=0, NULL=2, NULL=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@77adcdb2=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTUnaryExpression@119ad814=0, NULL=0, x=1, y=4294967298, NULL=3} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 23]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L18] unsigned int x = 1; [L19] unsigned int y = __VERIFIER_nondet_uint(); [L21] COND FALSE !(!(y > 0)) Loop: [L23] COND TRUE x < y [L24] COND TRUE x < y / x [L25] x *= x End of lasso representation. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...