./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-15/array20_alloca.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_14aa792f-466a-490b-a5b0-c1da5bc15728/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_14aa792f-466a-490b-a5b0-c1da5bc15728/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_14aa792f-466a-490b-a5b0-c1da5bc15728/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_14aa792f-466a-490b-a5b0-c1da5bc15728/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-15/array20_alloca.i -s /tmp/vcloud-vcloud-master/worker/run_dir_14aa792f-466a-490b-a5b0-c1da5bc15728/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_14aa792f-466a-490b-a5b0-c1da5bc15728/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 64bit --witnessprinter.graph.data.programhash 15cc26ae0dc42c909592f114b7003fa240a2d07d ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 0.1.25-f470102 [2019-12-07 11:45:35,106 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 11:45:35,107 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 11:45:35,114 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 11:45:35,115 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 11:45:35,115 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 11:45:35,116 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 11:45:35,118 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 11:45:35,119 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 11:45:35,120 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 11:45:35,120 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 11:45:35,121 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 11:45:35,121 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 11:45:35,122 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 11:45:35,122 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 11:45:35,123 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 11:45:35,124 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 11:45:35,124 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 11:45:35,126 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 11:45:35,127 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 11:45:35,128 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 11:45:35,129 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 11:45:35,130 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 11:45:35,130 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 11:45:35,132 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 11:45:35,132 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 11:45:35,132 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 11:45:35,133 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 11:45:35,133 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 11:45:35,134 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 11:45:35,134 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 11:45:35,134 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 11:45:35,134 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 11:45:35,135 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 11:45:35,136 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 11:45:35,136 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 11:45:35,136 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 11:45:35,136 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 11:45:35,136 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 11:45:35,137 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 11:45:35,137 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 11:45:35,138 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_14aa792f-466a-490b-a5b0-c1da5bc15728/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2019-12-07 11:45:35,149 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 11:45:35,149 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 11:45:35,149 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 11:45:35,150 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 11:45:35,150 INFO L138 SettingsManager]: * Use SBE=true [2019-12-07 11:45:35,150 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-12-07 11:45:35,150 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-12-07 11:45:35,150 INFO L138 SettingsManager]: * Use old map elimination=false [2019-12-07 11:45:35,150 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-12-07 11:45:35,150 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-12-07 11:45:35,151 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-12-07 11:45:35,151 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 11:45:35,151 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-12-07 11:45:35,151 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 11:45:35,151 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 11:45:35,151 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-12-07 11:45:35,151 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-12-07 11:45:35,151 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-12-07 11:45:35,152 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 11:45:35,152 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-12-07 11:45:35,152 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 11:45:35,152 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-12-07 11:45:35,152 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 11:45:35,152 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 11:45:35,152 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-12-07 11:45:35,152 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 11:45:35,153 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-07 11:45:35,153 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 11:45:35,153 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-12-07 11:45:35,153 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-12-07 11:45:35,153 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR 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_14aa792f-466a-490b-a5b0-c1da5bc15728/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 -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 15cc26ae0dc42c909592f114b7003fa240a2d07d [2019-12-07 11:45:35,251 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 11:45:35,259 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 11:45:35,261 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 11:45:35,262 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 11:45:35,262 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 11:45:35,262 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_14aa792f-466a-490b-a5b0-c1da5bc15728/bin/uautomizer/../../sv-benchmarks/c/termination-15/array20_alloca.i [2019-12-07 11:45:35,298 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_14aa792f-466a-490b-a5b0-c1da5bc15728/bin/uautomizer/data/588abd354/127f73dac8c94da0b92732396cca91f4/FLAG858075e10 [2019-12-07 11:45:35,640 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 11:45:35,641 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_14aa792f-466a-490b-a5b0-c1da5bc15728/sv-benchmarks/c/termination-15/array20_alloca.i [2019-12-07 11:45:35,647 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_14aa792f-466a-490b-a5b0-c1da5bc15728/bin/uautomizer/data/588abd354/127f73dac8c94da0b92732396cca91f4/FLAG858075e10 [2019-12-07 11:45:35,656 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_14aa792f-466a-490b-a5b0-c1da5bc15728/bin/uautomizer/data/588abd354/127f73dac8c94da0b92732396cca91f4 [2019-12-07 11:45:35,658 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 11:45:35,659 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 11:45:35,660 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 11:45:35,660 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 11:45:35,662 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 11:45:35,663 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 11:45:35" (1/1) ... [2019-12-07 11:45:35,665 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c5b0273 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:45:35, skipping insertion in model container [2019-12-07 11:45:35,665 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 11:45:35" (1/1) ... [2019-12-07 11:45:35,670 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 11:45:35,698 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 11:45:35,937 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 11:45:35,945 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 11:45:35,979 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 11:45:36,020 INFO L208 MainTranslator]: Completed translation [2019-12-07 11:45:36,020 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:45:36 WrapperNode [2019-12-07 11:45:36,021 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 11:45:36,021 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 11:45:36,021 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 11:45:36,021 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 11:45:36,027 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:45:36" (1/1) ... [2019-12-07 11:45:36,039 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:45:36" (1/1) ... [2019-12-07 11:45:36,053 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 11:45:36,054 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 11:45:36,054 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 11:45:36,054 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 11:45:36,060 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:45:36" (1/1) ... [2019-12-07 11:45:36,060 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:45:36" (1/1) ... [2019-12-07 11:45:36,062 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:45:36" (1/1) ... [2019-12-07 11:45:36,062 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:45:36" (1/1) ... [2019-12-07 11:45:36,066 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:45:36" (1/1) ... [2019-12-07 11:45:36,070 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:45:36" (1/1) ... [2019-12-07 11:45:36,071 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:45:36" (1/1) ... [2019-12-07 11:45:36,073 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 11:45:36,073 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 11:45:36,073 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 11:45:36,073 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 11:45:36,074 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:45:36" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_14aa792f-466a-490b-a5b0-c1da5bc15728/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 [2019-12-07 11:45:36,121 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-12-07 11:45:36,121 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-12-07 11:45:36,121 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-07 11:45:36,122 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-07 11:45:36,122 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 11:45:36,122 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 11:45:36,244 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 11:45:36,244 INFO L287 CfgBuilder]: Removed 6 assume(true) statements. [2019-12-07 11:45:36,245 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 11:45:36 BoogieIcfgContainer [2019-12-07 11:45:36,245 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 11:45:36,245 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-12-07 11:45:36,245 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-12-07 11:45:36,248 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-12-07 11:45:36,248 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-12-07 11:45:36,248 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 07.12 11:45:35" (1/3) ... [2019-12-07 11:45:36,249 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@47e30080 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 07.12 11:45:36, skipping insertion in model container [2019-12-07 11:45:36,249 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-12-07 11:45:36,249 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 11:45:36" (2/3) ... [2019-12-07 11:45:36,249 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@47e30080 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 07.12 11:45:36, skipping insertion in model container [2019-12-07 11:45:36,249 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-12-07 11:45:36,249 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 11:45:36" (3/3) ... [2019-12-07 11:45:36,250 INFO L371 chiAutomizerObserver]: Analyzing ICFG array20_alloca.i [2019-12-07 11:45:36,278 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-12-07 11:45:36,279 INFO L357 BuchiCegarLoop]: Hoare is false [2019-12-07 11:45:36,279 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-12-07 11:45:36,279 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 11:45:36,279 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 11:45:36,279 INFO L361 BuchiCegarLoop]: Difference is false [2019-12-07 11:45:36,279 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 11:45:36,279 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-12-07 11:45:36,288 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 14 states. [2019-12-07 11:45:36,301 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 4 [2019-12-07 11:45:36,301 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 11:45:36,302 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 11:45:36,306 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2019-12-07 11:45:36,306 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-12-07 11:45:36,306 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-12-07 11:45:36,306 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 14 states. [2019-12-07 11:45:36,307 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 4 [2019-12-07 11:45:36,307 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 11:45:36,307 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 11:45:36,308 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2019-12-07 11:45:36,308 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-12-07 11:45:36,313 INFO L794 eck$LassoCheckResult]: Stem: 9#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 7#L-1true havoc main_#res;havoc main_#t~nondet205, main_#t~malloc206.base, main_#t~malloc206.offset, main_#t~nondet208, main_#t~mem209, main_#t~post207, main_#t~mem210, main_~i~0, main_~j~0, main_~length~0, main_~arr~0.base, main_~arr~0.offset;havoc main_~i~0;havoc main_~j~0;main_~length~0 := main_#t~nondet205;havoc main_#t~nondet205; 15#L367true assume !(main_~length~0 < 1); 4#L367-2true call main_#t~malloc206.base, main_#t~malloc206.offset := #Ultimate.allocOnStack(4 * main_~length~0);main_~arr~0.base, main_~arr~0.offset := main_#t~malloc206.base, main_#t~malloc206.offset; 12#L369true assume !(main_~arr~0.base == 0 && main_~arr~0.offset == 0);main_~i~0 := 0; 16#L370-3true [2019-12-07 11:45:36,313 INFO L796 eck$LassoCheckResult]: Loop: 16#L370-3true assume !!(main_~i~0 < main_~length~0);call write~int(main_#t~nondet208, main_~arr~0.base, main_~arr~0.offset + 4 * main_~i~0, 4);havoc main_#t~nondet208;call main_#t~mem209 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~i~0, 4); 8#L372true assume main_#t~mem209 < 1;havoc main_#t~mem209;call write~int(1, main_~arr~0.base, main_~arr~0.offset + 4 * main_~i~0, 4); 14#L370-2true main_#t~post207 := main_~i~0;main_~i~0 := 1 + main_#t~post207;havoc main_#t~post207; 16#L370-3true [2019-12-07 11:45:36,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:45:36,318 INFO L82 PathProgramCache]: Analyzing trace with hash 28695753, now seen corresponding path program 1 times [2019-12-07 11:45:36,324 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 11:45:36,324 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188949950] [2019-12-07 11:45:36,324 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:45:36,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 11:45:36,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 11:45:36,407 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 11:45:36,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:45:36,408 INFO L82 PathProgramCache]: Analyzing trace with hash 51737, now seen corresponding path program 1 times [2019-12-07 11:45:36,408 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 11:45:36,408 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345546941] [2019-12-07 11:45:36,408 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:45:36,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 11:45:36,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 11:45:36,422 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 11:45:36,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:45:36,423 INFO L82 PathProgramCache]: Analyzing trace with hash 176707665, now seen corresponding path program 1 times [2019-12-07 11:45:36,424 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 11:45:36,424 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808086202] [2019-12-07 11:45:36,424 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:45:36,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 11:45:36,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 11:45:36,449 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 11:45:36,588 INFO L210 LassoAnalysis]: Preferences: [2019-12-07 11:45:36,588 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2019-12-07 11:45:36,588 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-12-07 11:45:36,588 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2019-12-07 11:45:36,589 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2019-12-07 11:45:36,589 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 11:45:36,589 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2019-12-07 11:45:36,589 INFO L132 ssoRankerPreferences]: Path of dumped script: [2019-12-07 11:45:36,589 INFO L133 ssoRankerPreferences]: Filename of dumped script: array20_alloca.i_Iteration1_Lasso [2019-12-07 11:45:36,589 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2019-12-07 11:45:36,589 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-12-07 11:45:36,609 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:45:36,613 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:45:36,614 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:45:36,616 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:45:36,619 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:45:36,620 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:45:36,622 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:45:36,624 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:45:36,697 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:45:36,699 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-12-07 11:45:36,821 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-12-07 11:45:36,825 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_14aa792f-466a-490b-a5b0-c1da5bc15728/bin/uautomizer/z3 Starting monitored process 2 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 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 11:45:36,829 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 11:45:36,830 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 11:45:36,830 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 11:45:36,831 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 11:45:36,831 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 11:45:36,831 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 11:45:36,832 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 11:45:36,833 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 11:45:36,834 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_14aa792f-466a-490b-a5b0-c1da5bc15728/bin/uautomizer/z3 Starting monitored process 3 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 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 11:45:36,838 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 11:45:36,839 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 11:45:36,839 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 11:45:36,839 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 11:45:36,839 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 11:45:36,840 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 11:45:36,840 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 11:45:36,840 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 11:45:36,841 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_14aa792f-466a-490b-a5b0-c1da5bc15728/bin/uautomizer/z3 Starting monitored process 4 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 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 11:45:36,845 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 11:45:36,846 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 11:45:36,846 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 11:45:36,846 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 11:45:36,847 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 11:45:36,847 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 11:45:36,847 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 11:45:36,848 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 11:45:36,849 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_14aa792f-466a-490b-a5b0-c1da5bc15728/bin/uautomizer/z3 Starting monitored process 5 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 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 11:45:36,852 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 11:45:36,854 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 11:45:36,854 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 11:45:36,854 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 11:45:36,854 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 11:45:36,857 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 11:45:36,857 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 11:45:36,860 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_14aa792f-466a-490b-a5b0-c1da5bc15728/bin/uautomizer/z3 Starting monitored process 6 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 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 11:45:36,864 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 11:45:36,865 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 11:45:36,865 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 11:45:36,865 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 11:45:36,865 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 11:45:36,865 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 11:45:36,866 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 11:45:36,866 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 11:45:36,867 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_14aa792f-466a-490b-a5b0-c1da5bc15728/bin/uautomizer/z3 Starting monitored process 7 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 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 11:45:36,870 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 11:45:36,872 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 11:45:36,872 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-12-07 11:45:36,872 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 11:45:36,872 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 11:45:36,872 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 11:45:36,873 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-12-07 11:45:36,873 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-12-07 11:45:36,874 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_14aa792f-466a-490b-a5b0-c1da5bc15728/bin/uautomizer/z3 Starting monitored process 8 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 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 11:45:36,877 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 11:45:36,878 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 11:45:36,878 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 11:45:36,879 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 11:45:36,879 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 11:45:36,881 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 11:45:36,881 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 11:45:36,883 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_14aa792f-466a-490b-a5b0-c1da5bc15728/bin/uautomizer/z3 Starting monitored process 9 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 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 11:45:36,887 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2019-12-07 11:45:36,889 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2019-12-07 11:45:36,889 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2019-12-07 11:45:36,889 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2019-12-07 11:45:36,889 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2019-12-07 11:45:36,897 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-12-07 11:45:36,897 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-12-07 11:45:36,911 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-12-07 11:45:36,941 INFO L443 ModelExtractionUtils]: Simplification made 16 calls to the SMT solver. [2019-12-07 11:45:36,941 INFO L444 ModelExtractionUtils]: 4 out of 22 variables were initially zero. Simplification set additionally 15 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_14aa792f-466a-490b-a5b0-c1da5bc15728/bin/uautomizer/z3 Starting monitored process 10 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 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 11:45:36,945 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-12-07 11:45:36,951 INFO L438 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2019-12-07 11:45:36,951 INFO L510 LassoAnalysis]: Proved termination. [2019-12-07 11:45:36,952 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0, ULTIMATE.start_main_~length~0) = -1*ULTIMATE.start_main_~i~0 + 1*ULTIMATE.start_main_~length~0 Supporting invariants [] [2019-12-07 11:45:36,963 INFO L297 tatePredicateManager]: 3 out of 3 supporting invariants were superfluous and have been removed [2019-12-07 11:45:36,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:45:36,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:45:36,999 INFO L264 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 11:45:37,000 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 11:45:37,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:45:37,013 INFO L264 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 11:45:37,014 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 11:45:37,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 11:45:37,035 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2019-12-07 11:45:37,036 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 14 states. Second operand 3 states. [2019-12-07 11:45:37,077 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 14 states.. Second operand 3 states. Result 32 states and 44 transitions. Complement of second has 7 states. [2019-12-07 11:45:37,077 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2019-12-07 11:45:37,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-12-07 11:45:37,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 29 transitions. [2019-12-07 11:45:37,080 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 29 transitions. Stem has 5 letters. Loop has 3 letters. [2019-12-07 11:45:37,081 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 11:45:37,081 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 29 transitions. Stem has 8 letters. Loop has 3 letters. [2019-12-07 11:45:37,081 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 11:45:37,081 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 29 transitions. Stem has 5 letters. Loop has 6 letters. [2019-12-07 11:45:37,081 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-12-07 11:45:37,082 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 32 states and 44 transitions. [2019-12-07 11:45:37,084 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2019-12-07 11:45:37,087 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 32 states to 11 states and 15 transitions. [2019-12-07 11:45:37,088 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2019-12-07 11:45:37,088 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2019-12-07 11:45:37,089 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 15 transitions. [2019-12-07 11:45:37,089 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-12-07 11:45:37,089 INFO L688 BuchiCegarLoop]: Abstraction has 11 states and 15 transitions. [2019-12-07 11:45:37,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states and 15 transitions. [2019-12-07 11:45:37,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2019-12-07 11:45:37,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2019-12-07 11:45:37,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 15 transitions. [2019-12-07 11:45:37,107 INFO L711 BuchiCegarLoop]: Abstraction has 11 states and 15 transitions. [2019-12-07 11:45:37,107 INFO L591 BuchiCegarLoop]: Abstraction has 11 states and 15 transitions. [2019-12-07 11:45:37,107 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-12-07 11:45:37,108 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states and 15 transitions. [2019-12-07 11:45:37,108 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2019-12-07 11:45:37,108 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 11:45:37,108 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 11:45:37,109 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2019-12-07 11:45:37,109 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1] [2019-12-07 11:45:37,109 INFO L794 eck$LassoCheckResult]: Stem: 115#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 109#L-1 havoc main_#res;havoc main_#t~nondet205, main_#t~malloc206.base, main_#t~malloc206.offset, main_#t~nondet208, main_#t~mem209, main_#t~post207, main_#t~mem210, main_~i~0, main_~j~0, main_~length~0, main_~arr~0.base, main_~arr~0.offset;havoc main_~i~0;havoc main_~j~0;main_~length~0 := main_#t~nondet205;havoc main_#t~nondet205; 110#L367 assume !(main_~length~0 < 1); 116#L367-2 call main_#t~malloc206.base, main_#t~malloc206.offset := #Ultimate.allocOnStack(4 * main_~length~0);main_~arr~0.base, main_~arr~0.offset := main_#t~malloc206.base, main_#t~malloc206.offset; 117#L369 assume !(main_~arr~0.base == 0 && main_~arr~0.offset == 0);main_~i~0 := 0; 118#L370-3 assume !(main_~i~0 < main_~length~0); 113#L370-4 main_~j~0 := 1; 114#L377-2 [2019-12-07 11:45:37,109 INFO L796 eck$LassoCheckResult]: Loop: 114#L377-2 assume !!(1 <= main_~j~0 && main_~j~0 < main_~length~0);call main_#t~mem210 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~j~0, 4);main_~j~0 := main_~j~0 * main_#t~mem210;havoc main_#t~mem210; 114#L377-2 [2019-12-07 11:45:37,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:45:37,109 INFO L82 PathProgramCache]: Analyzing trace with hash 1806815510, now seen corresponding path program 1 times [2019-12-07 11:45:37,109 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 11:45:37,110 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79397467] [2019-12-07 11:45:37,110 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:45:37,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:45:37,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 11:45:37,144 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79397467] [2019-12-07 11:45:37,145 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 11:45:37,145 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-12-07 11:45:37,145 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587354530] [2019-12-07 11:45:37,147 INFO L799 eck$LassoCheckResult]: stem already infeasible [2019-12-07 11:45:37,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:45:37,148 INFO L82 PathProgramCache]: Analyzing trace with hash 73, now seen corresponding path program 1 times [2019-12-07 11:45:37,148 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 11:45:37,148 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537496403] [2019-12-07 11:45:37,148 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:45:37,151 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-12-07 11:45:37,151 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1315348796] [2019-12-07 11:45:37,151 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_14aa792f-466a-490b-a5b0-c1da5bc15728/bin/uautomizer/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 11:45:37,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 11:45:37,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 11:45:37,181 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 11:45:37,205 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 11:45:37,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 11:45:37,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-07 11:45:37,208 INFO L87 Difference]: Start difference. First operand 11 states and 15 transitions. cyclomatic complexity: 6 Second operand 4 states. [2019-12-07 11:45:37,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 11:45:37,230 INFO L93 Difference]: Finished difference Result 13 states and 17 transitions. [2019-12-07 11:45:37,230 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 11:45:37,230 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 13 states and 17 transitions. [2019-12-07 11:45:37,231 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2019-12-07 11:45:37,231 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 13 states to 13 states and 17 transitions. [2019-12-07 11:45:37,232 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2019-12-07 11:45:37,232 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2019-12-07 11:45:37,232 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 17 transitions. [2019-12-07 11:45:37,232 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-12-07 11:45:37,232 INFO L688 BuchiCegarLoop]: Abstraction has 13 states and 17 transitions. [2019-12-07 11:45:37,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states and 17 transitions. [2019-12-07 11:45:37,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 11. [2019-12-07 11:45:37,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2019-12-07 11:45:37,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 14 transitions. [2019-12-07 11:45:37,233 INFO L711 BuchiCegarLoop]: Abstraction has 11 states and 14 transitions. [2019-12-07 11:45:37,234 INFO L591 BuchiCegarLoop]: Abstraction has 11 states and 14 transitions. [2019-12-07 11:45:37,234 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2019-12-07 11:45:37,234 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states and 14 transitions. [2019-12-07 11:45:37,234 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2019-12-07 11:45:37,234 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 11:45:37,234 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 11:45:37,235 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 11:45:37,235 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1] [2019-12-07 11:45:37,235 INFO L794 eck$LassoCheckResult]: Stem: 146#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 140#L-1 havoc main_#res;havoc main_#t~nondet205, main_#t~malloc206.base, main_#t~malloc206.offset, main_#t~nondet208, main_#t~mem209, main_#t~post207, main_#t~mem210, main_~i~0, main_~j~0, main_~length~0, main_~arr~0.base, main_~arr~0.offset;havoc main_~i~0;havoc main_~j~0;main_~length~0 := main_#t~nondet205;havoc main_#t~nondet205; 141#L367 assume !(main_~length~0 < 1); 147#L367-2 call main_#t~malloc206.base, main_#t~malloc206.offset := #Ultimate.allocOnStack(4 * main_~length~0);main_~arr~0.base, main_~arr~0.offset := main_#t~malloc206.base, main_#t~malloc206.offset; 148#L369 assume !(main_~arr~0.base == 0 && main_~arr~0.offset == 0);main_~i~0 := 0; 149#L370-3 assume !!(main_~i~0 < main_~length~0);call write~int(main_#t~nondet208, main_~arr~0.base, main_~arr~0.offset + 4 * main_~i~0, 4);havoc main_#t~nondet208;call main_#t~mem209 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~i~0, 4); 142#L372 assume !(main_#t~mem209 < 1);havoc main_#t~mem209; 143#L370-2 main_#t~post207 := main_~i~0;main_~i~0 := 1 + main_#t~post207;havoc main_#t~post207; 150#L370-3 assume !(main_~i~0 < main_~length~0); 144#L370-4 main_~j~0 := 1; 145#L377-2 [2019-12-07 11:45:37,235 INFO L796 eck$LassoCheckResult]: Loop: 145#L377-2 assume !!(1 <= main_~j~0 && main_~j~0 < main_~length~0);call main_#t~mem210 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~j~0, 4);main_~j~0 := main_~j~0 * main_#t~mem210;havoc main_#t~mem210; 145#L377-2 [2019-12-07 11:45:37,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:45:37,235 INFO L82 PathProgramCache]: Analyzing trace with hash -1982565540, now seen corresponding path program 1 times [2019-12-07 11:45:37,235 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 11:45:37,236 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406922678] [2019-12-07 11:45:37,236 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:45:37,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 11:45:37,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 11:45:37,255 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 11:45:37,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:45:37,255 INFO L82 PathProgramCache]: Analyzing trace with hash 73, now seen corresponding path program 2 times [2019-12-07 11:45:37,256 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 11:45:37,256 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734920652] [2019-12-07 11:45:37,256 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:45:37,257 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-12-07 11:45:37,258 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1241601545] [2019-12-07 11:45:37,258 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_14aa792f-466a-490b-a5b0-c1da5bc15728/bin/uautomizer/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 11:45:37,279 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2019-12-07 11:45:37,279 INFO L250 tOrderPrioritization]: Conjunction of SSA is sat [2019-12-07 11:45:37,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 11:45:37,283 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 11:45:37,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:45:37,284 INFO L82 PathProgramCache]: Analyzing trace with hash -1329989554, now seen corresponding path program 1 times [2019-12-07 11:45:37,284 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 11:45:37,284 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2424332] [2019-12-07 11:45:37,284 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:45:37,290 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-12-07 11:45:37,290 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [117381711] [2019-12-07 11:45:37,291 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_14aa792f-466a-490b-a5b0-c1da5bc15728/bin/uautomizer/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 11:45:37,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 11:45:37,320 INFO L264 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 5 conjunts are in the unsatisfiable core [2019-12-07 11:45:37,321 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 11:45:37,341 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 11:45:37,341 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2424332] [2019-12-07 11:45:37,341 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-12-07 11:45:37,341 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [117381711] [2019-12-07 11:45:37,342 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-12-07 11:45:37,342 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2019-12-07 11:45:37,342 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192152584] [2019-12-07 11:45:37,361 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 11:45:37,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-12-07 11:45:37,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-12-07 11:45:37,361 INFO L87 Difference]: Start difference. First operand 11 states and 14 transitions. cyclomatic complexity: 5 Second operand 6 states. [2019-12-07 11:45:37,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 11:45:37,414 INFO L93 Difference]: Finished difference Result 24 states and 31 transitions. [2019-12-07 11:45:37,414 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-12-07 11:45:37,414 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 24 states and 31 transitions. [2019-12-07 11:45:37,415 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2019-12-07 11:45:37,416 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 24 states to 16 states and 20 transitions. [2019-12-07 11:45:37,416 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2019-12-07 11:45:37,416 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2019-12-07 11:45:37,416 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 20 transitions. [2019-12-07 11:45:37,416 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-12-07 11:45:37,416 INFO L688 BuchiCegarLoop]: Abstraction has 16 states and 20 transitions. [2019-12-07 11:45:37,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states and 20 transitions. [2019-12-07 11:45:37,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 14. [2019-12-07 11:45:37,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2019-12-07 11:45:37,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 17 transitions. [2019-12-07 11:45:37,417 INFO L711 BuchiCegarLoop]: Abstraction has 14 states and 17 transitions. [2019-12-07 11:45:37,417 INFO L591 BuchiCegarLoop]: Abstraction has 14 states and 17 transitions. [2019-12-07 11:45:37,418 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2019-12-07 11:45:37,418 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 14 states and 17 transitions. [2019-12-07 11:45:37,418 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2019-12-07 11:45:37,418 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 11:45:37,418 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 11:45:37,419 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 11:45:37,419 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1] [2019-12-07 11:45:37,419 INFO L794 eck$LassoCheckResult]: Stem: 228#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; 222#L-1 havoc main_#res;havoc main_#t~nondet205, main_#t~malloc206.base, main_#t~malloc206.offset, main_#t~nondet208, main_#t~mem209, main_#t~post207, main_#t~mem210, main_~i~0, main_~j~0, main_~length~0, main_~arr~0.base, main_~arr~0.offset;havoc main_~i~0;havoc main_~j~0;main_~length~0 := main_#t~nondet205;havoc main_#t~nondet205; 223#L367 assume !(main_~length~0 < 1); 229#L367-2 call main_#t~malloc206.base, main_#t~malloc206.offset := #Ultimate.allocOnStack(4 * main_~length~0);main_~arr~0.base, main_~arr~0.offset := main_#t~malloc206.base, main_#t~malloc206.offset; 230#L369 assume !(main_~arr~0.base == 0 && main_~arr~0.offset == 0);main_~i~0 := 0; 231#L370-3 assume !!(main_~i~0 < main_~length~0);call write~int(main_#t~nondet208, main_~arr~0.base, main_~arr~0.offset + 4 * main_~i~0, 4);havoc main_#t~nondet208;call main_#t~mem209 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~i~0, 4); 233#L372 assume !(main_#t~mem209 < 1);havoc main_#t~mem209; 235#L370-2 main_#t~post207 := main_~i~0;main_~i~0 := 1 + main_#t~post207;havoc main_#t~post207; 234#L370-3 assume !!(main_~i~0 < main_~length~0);call write~int(main_#t~nondet208, main_~arr~0.base, main_~arr~0.offset + 4 * main_~i~0, 4);havoc main_#t~nondet208;call main_#t~mem209 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~i~0, 4); 224#L372 assume !(main_#t~mem209 < 1);havoc main_#t~mem209; 225#L370-2 main_#t~post207 := main_~i~0;main_~i~0 := 1 + main_#t~post207;havoc main_#t~post207; 232#L370-3 assume !(main_~i~0 < main_~length~0); 226#L370-4 main_~j~0 := 1; 227#L377-2 [2019-12-07 11:45:37,419 INFO L796 eck$LassoCheckResult]: Loop: 227#L377-2 assume !!(1 <= main_~j~0 && main_~j~0 < main_~length~0);call main_#t~mem210 := read~int(main_~arr~0.base, main_~arr~0.offset + 4 * main_~j~0, 4);main_~j~0 := main_~j~0 * main_#t~mem210;havoc main_#t~mem210; 227#L377-2 [2019-12-07 11:45:37,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:45:37,419 INFO L82 PathProgramCache]: Analyzing trace with hash 1781949270, now seen corresponding path program 2 times [2019-12-07 11:45:37,419 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 11:45:37,419 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816252381] [2019-12-07 11:45:37,419 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:45:37,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 11:45:37,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 11:45:37,442 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 11:45:37,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:45:37,442 INFO L82 PathProgramCache]: Analyzing trace with hash 73, now seen corresponding path program 3 times [2019-12-07 11:45:37,442 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 11:45:37,442 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933316849] [2019-12-07 11:45:37,442 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:45:37,444 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-12-07 11:45:37,444 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2145596041] [2019-12-07 11:45:37,444 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_14aa792f-466a-490b-a5b0-c1da5bc15728/bin/uautomizer/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 11:45:37,462 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2019-12-07 11:45:37,462 INFO L250 tOrderPrioritization]: Conjunction of SSA is sat [2019-12-07 11:45:37,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 11:45:37,465 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 11:45:37,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 11:45:37,465 INFO L82 PathProgramCache]: Analyzing trace with hash -594147436, now seen corresponding path program 2 times [2019-12-07 11:45:37,465 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 11:45:37,465 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849276031] [2019-12-07 11:45:37,465 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 11:45:37,471 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-12-07 11:45:37,471 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1740238476] [2019-12-07 11:45:37,471 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_14aa792f-466a-490b-a5b0-c1da5bc15728/bin/uautomizer/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 11:45:37,495 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-12-07 11:45:37,495 INFO L250 tOrderPrioritization]: Conjunction of SSA is sat [2019-12-07 11:45:37,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 11:45:37,505 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 11:45:37,647 WARN L192 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 76 [2019-12-07 11:45:37,700 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 07.12 11:45:37 BoogieIcfgContainer [2019-12-07 11:45:37,700 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-12-07 11:45:37,700 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 11:45:37,700 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 11:45:37,701 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 11:45:37,701 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 11:45:36" (3/4) ... [2019-12-07 11:45:37,703 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2019-12-07 11:45:37,729 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_14aa792f-466a-490b-a5b0-c1da5bc15728/bin/uautomizer/witness.graphml [2019-12-07 11:45:37,730 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 11:45:37,731 INFO L168 Benchmark]: Toolchain (without parser) took 2071.83 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 97.5 MB). Free memory was 939.3 MB in the beginning and 1.0 GB in the end (delta: -72.6 MB). Peak memory consumption was 25.0 MB. Max. memory is 11.5 GB. [2019-12-07 11:45:37,731 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 955.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 11:45:37,731 INFO L168 Benchmark]: CACSL2BoogieTranslator took 361.24 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 97.5 MB). Free memory was 934.0 MB in the beginning and 1.1 GB in the end (delta: -140.9 MB). Peak memory consumption was 17.9 MB. Max. memory is 11.5 GB. [2019-12-07 11:45:37,731 INFO L168 Benchmark]: Boogie Procedure Inliner took 32.34 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 11:45:37,732 INFO L168 Benchmark]: Boogie Preprocessor took 19.13 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-12-07 11:45:37,732 INFO L168 Benchmark]: RCFGBuilder took 172.12 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 16.5 MB). Peak memory consumption was 16.5 MB. Max. memory is 11.5 GB. [2019-12-07 11:45:37,732 INFO L168 Benchmark]: BuchiAutomizer took 1454.85 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 39.3 MB). Peak memory consumption was 39.3 MB. Max. memory is 11.5 GB. [2019-12-07 11:45:37,733 INFO L168 Benchmark]: Witness Printer took 29.29 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 11.5 GB. [2019-12-07 11:45:37,734 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 955.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 361.24 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 97.5 MB). Free memory was 934.0 MB in the beginning and 1.1 GB in the end (delta: -140.9 MB). Peak memory consumption was 17.9 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 32.34 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 19.13 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 172.12 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 16.5 MB). Peak memory consumption was 16.5 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 1454.85 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 39.3 MB). Peak memory consumption was 39.3 MB. Max. memory is 11.5 GB. * Witness Printer took 29.29 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 3 terminating modules (2 trivial, 1 deterministic, 0 nondeterministic) and one nonterminating remainder module.One deterministic module has affine ranking function -1 * i + length and consists of 5 locations. 2 modules have a trivial ranking function, the largest among these consists of 6 locations. The remainder module has 14 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.4s and 4 iterations. TraceHistogramMax:2. Analysis of lassos took 1.1s. Construction of modules took 0.0s. Büchi inclusion checks took 0.1s. Highest rank in rank-based complementation 3. Minimization of det autom 3. Minimization of nondet autom 0. Automata minimization 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 4 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 14 states and ocurred in iteration 3. Nontrivial modules had stage [1, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 29 SDtfs, 56 SDslu, 26 SDs, 0 SdLazy, 58 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont1 unkn0 SFLI0 SFLT0 conc1 concLT0 SILN0 SILU1 SILI0 SILT0 lasso1 LassoPreprocessingBenchmarks: Lassos: inital103 mio100 ax100 hnf99 lsp91 ukn82 mio100 lsp64 div100 bol100 ite100 ukn100 eq167 hnf91 smp100 dnf100 smp100 tf100 neg100 sie102 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 10ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: 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: 377]: 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, \result=0, NULL=1, arr=2, arr=0, i=2, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@5d17f84d=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@746a90ee=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@17243dca=0, length=2, org.eclipse.cdt.internal.core.dom.parser.c.CASTArraySubscriptExpression@682f1073=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@17243dca=2, j=1, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTArraySubscriptExpression@22ba950d=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTUnaryExpression@5c255901=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 377]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L365] int i, j; [L366] int length = __VERIFIER_nondet_int(); [L367] COND FALSE !(length < 1) [L368] int *arr = __builtin_alloca(length*sizeof(int)); [L369] COND FALSE !(!arr) [L370] i=0 [L370] COND TRUE i