./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/loop-invgen/fragtest_simple.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 9a8b2e8d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i ../sv-benchmarks/c/loop-invgen/fragtest_simple.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 5fcab3f6230f09fb280cb6a6471af8fd585365e7 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-9a8b2e8 [2020-10-20 07:06:12,016 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 07:06:12,018 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 07:06:12,047 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 07:06:12,047 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 07:06:12,048 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 07:06:12,050 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 07:06:12,052 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 07:06:12,053 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 07:06:12,054 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 07:06:12,055 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 07:06:12,056 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 07:06:12,057 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 07:06:12,058 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 07:06:12,059 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 07:06:12,060 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 07:06:12,070 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 07:06:12,071 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 07:06:12,073 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 07:06:12,075 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 07:06:12,078 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 07:06:12,080 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 07:06:12,082 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 07:06:12,084 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 07:06:12,091 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 07:06:12,094 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 07:06:12,094 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 07:06:12,096 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 07:06:12,097 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 07:06:12,098 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 07:06:12,098 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 07:06:12,099 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 07:06:12,100 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 07:06:12,101 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 07:06:12,103 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 07:06:12,103 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 07:06:12,104 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 07:06:12,104 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 07:06:12,105 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 07:06:12,106 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 07:06:12,108 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 07:06:12,111 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2020-10-20 07:06:12,171 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 07:06:12,175 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 07:06:12,177 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 07:06:12,177 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 07:06:12,177 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 07:06:12,178 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-10-20 07:06:12,180 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-10-20 07:06:12,180 INFO L138 SettingsManager]: * Use old map elimination=false [2020-10-20 07:06:12,181 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-10-20 07:06:12,181 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-10-20 07:06:12,181 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-10-20 07:06:12,181 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 07:06:12,182 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 07:06:12,182 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-20 07:06:12,182 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 07:06:12,183 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 07:06:12,183 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 07:06:12,183 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-10-20 07:06:12,184 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-10-20 07:06:12,185 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-10-20 07:06:12,185 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 07:06:12,185 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 07:06:12,185 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-10-20 07:06:12,186 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 07:06:12,186 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-10-20 07:06:12,187 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 07:06:12,187 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 07:06:12,187 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-10-20 07:06:12,187 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 07:06:12,188 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 07:06:12,188 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 07:06:12,188 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-10-20 07:06:12,189 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-10-20 07:06:12,190 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 -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux 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 -> 5fcab3f6230f09fb280cb6a6471af8fd585365e7 [2020-10-20 07:06:12,395 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 07:06:12,407 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 07:06:12,412 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 07:06:12,413 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 07:06:12,414 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 07:06:12,414 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-invgen/fragtest_simple.i [2020-10-20 07:06:12,496 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c589a1057/3aa571ec1ea04e1f90cd299e1475d41a/FLAG918ada626 [2020-10-20 07:06:13,037 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 07:06:13,038 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-invgen/fragtest_simple.i [2020-10-20 07:06:13,045 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c589a1057/3aa571ec1ea04e1f90cd299e1475d41a/FLAG918ada626 [2020-10-20 07:06:13,497 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c589a1057/3aa571ec1ea04e1f90cd299e1475d41a [2020-10-20 07:06:13,501 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 07:06:13,508 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 07:06:13,509 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 07:06:13,509 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 07:06:13,513 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 07:06:13,514 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 07:06:13" (1/1) ... [2020-10-20 07:06:13,517 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41c2896 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 07:06:13, skipping insertion in model container [2020-10-20 07:06:13,517 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 07:06:13" (1/1) ... [2020-10-20 07:06:13,525 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 07:06:13,551 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 07:06:13,763 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 07:06:13,775 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 07:06:13,798 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 07:06:13,816 INFO L208 MainTranslator]: Completed translation [2020-10-20 07:06:13,817 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 07:06:13 WrapperNode [2020-10-20 07:06:13,817 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 07:06:13,818 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 07:06:13,818 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 07:06:13,818 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 07:06:13,827 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 07:06:13" (1/1) ... [2020-10-20 07:06:13,837 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 07:06:13" (1/1) ... [2020-10-20 07:06:13,859 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 07:06:13,859 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 07:06:13,859 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 07:06:13,859 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 07:06:13,867 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 07:06:13" (1/1) ... [2020-10-20 07:06:13,868 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 07:06:13" (1/1) ... [2020-10-20 07:06:13,869 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 07:06:13" (1/1) ... [2020-10-20 07:06:13,869 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 07:06:13" (1/1) ... [2020-10-20 07:06:13,873 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 07:06:13" (1/1) ... [2020-10-20 07:06:13,879 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 07:06:13" (1/1) ... [2020-10-20 07:06:13,880 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 07:06:13" (1/1) ... [2020-10-20 07:06:13,882 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 07:06:13,883 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 07:06:13,883 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 07:06:13,883 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 07:06:13,884 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 07:06:13" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-20 07:06:13,954 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-20 07:06:13,955 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 07:06:13,955 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 07:06:13,955 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 07:06:14,179 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 07:06:14,180 INFO L298 CfgBuilder]: Removed 11 assume(true) statements. [2020-10-20 07:06:14,182 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 07:06:14 BoogieIcfgContainer [2020-10-20 07:06:14,182 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 07:06:14,183 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-10-20 07:06:14,184 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-10-20 07:06:14,188 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-10-20 07:06:14,189 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-20 07:06:14,190 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 20.10 07:06:13" (1/3) ... [2020-10-20 07:06:14,191 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7639eb88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.10 07:06:14, skipping insertion in model container [2020-10-20 07:06:14,191 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-20 07:06:14,191 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 07:06:13" (2/3) ... [2020-10-20 07:06:14,192 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7639eb88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.10 07:06:14, skipping insertion in model container [2020-10-20 07:06:14,192 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-10-20 07:06:14,192 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 07:06:14" (3/3) ... [2020-10-20 07:06:14,194 INFO L373 chiAutomizerObserver]: Analyzing ICFG fragtest_simple.i [2020-10-20 07:06:14,314 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-10-20 07:06:14,314 INFO L360 BuchiCegarLoop]: Hoare is false [2020-10-20 07:06:14,315 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-10-20 07:06:14,315 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 07:06:14,315 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 07:06:14,315 INFO L364 BuchiCegarLoop]: Difference is false [2020-10-20 07:06:14,315 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 07:06:14,315 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-10-20 07:06:14,346 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 18 states. [2020-10-20 07:06:14,366 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 9 [2020-10-20 07:06:14,367 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 07:06:14,367 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 07:06:14,374 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-10-20 07:06:14,374 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1] [2020-10-20 07:06:14,374 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-10-20 07:06:14,374 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 18 states. [2020-10-20 07:06:14,376 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 9 [2020-10-20 07:06:14,376 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 07:06:14,377 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 07:06:14,377 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-10-20 07:06:14,378 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1] [2020-10-20 07:06:14,384 INFO L794 eck$LassoCheckResult]: Stem: 12#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(9); 9#L-1true havoc main_#res;havoc main_#t~nondet3, main_#t~nondet4, main_#t~nondet5, main_~i~0, main_~pvlen~0, main_~tmp___1~0, main_~k~0, main_~n~0, main_~j~0;havoc main_~i~0;havoc main_~pvlen~0;havoc main_~tmp___1~0;main_~k~0 := 0;havoc main_~n~0;main_~i~0 := 0;main_~pvlen~0 := main_#t~nondet3;havoc main_#t~nondet3; 7#L31-2true [2020-10-20 07:06:14,384 INFO L796 eck$LassoCheckResult]: Loop: 7#L31-2true assume !!(0 != main_#t~nondet4 && main_~i~0 <= 1000000);havoc main_#t~nondet4;main_~i~0 := 1 + main_~i~0; 7#L31-2true [2020-10-20 07:06:14,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 07:06:14,390 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2020-10-20 07:06:14,405 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 07:06:14,406 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734229377] [2020-10-20 07:06:14,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 07:06:14,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 07:06:14,526 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 07:06:14,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 07:06:14,541 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 07:06:14,565 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 07:06:14,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 07:06:14,567 INFO L82 PathProgramCache]: Analyzing trace with hash 42, now seen corresponding path program 1 times [2020-10-20 07:06:14,568 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 07:06:14,568 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719453226] [2020-10-20 07:06:14,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 07:06:14,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 07:06:14,574 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 07:06:14,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 07:06:14,578 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 07:06:14,580 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 07:06:14,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 07:06:14,582 INFO L82 PathProgramCache]: Analyzing trace with hash 29864, now seen corresponding path program 1 times [2020-10-20 07:06:14,582 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 07:06:14,583 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939525567] [2020-10-20 07:06:14,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 07:06:14,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 07:06:14,599 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 07:06:14,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 07:06:14,612 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 07:06:14,617 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 07:06:14,702 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 07:06:14,703 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 07:06:14,703 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 07:06:14,704 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 07:06:14,704 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-20 07:06:14,704 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 07:06:14,704 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 07:06:14,704 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 07:06:14,704 INFO L133 ssoRankerPreferences]: Filename of dumped script: fragtest_simple.i_Iteration1_Loop [2020-10-20 07:06:14,704 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 07:06:14,705 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 07:06:14,726 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 07:06:14,741 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 07:06:14,812 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 07:06:14,812 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-20 07:06:14,821 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 07:06:14,821 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-20 07:06:14,851 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-20 07:06:14,851 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-20 07:06:14,888 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-20 07:06:14,890 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 07:06:14,891 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 07:06:14,891 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 07:06:14,891 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 07:06:14,891 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-20 07:06:14,891 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 07:06:14,891 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 07:06:14,891 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 07:06:14,891 INFO L133 ssoRankerPreferences]: Filename of dumped script: fragtest_simple.i_Iteration1_Loop [2020-10-20 07:06:14,892 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 07:06:14,892 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 07:06:14,893 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 07:06:14,911 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 07:06:14,949 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 07:06:14,955 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-20 07:06:14,971 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 [2020-10-20 07:06:14,974 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 07:06:14,974 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 07:06:14,975 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 07:06:14,976 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 07:06:14,976 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 07:06:14,979 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 07:06:14,979 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 07:06:14,983 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-20 07:06:14,994 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-10-20 07:06:14,995 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-20 07:06:15,013 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-20 07:06:15,014 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-20 07:06:15,015 INFO L510 LassoAnalysis]: Proved termination. [2020-10-20 07:06:15,015 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -2*ULTIMATE.start_main_~i~0 + 2000001 Supporting invariants [] [2020-10-20 07:06:15,055 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-20 07:06:15,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 07:06:15,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 07:06:15,138 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-20 07:06:15,139 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 07:06:15,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 07:06:15,170 WARN L261 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-20 07:06:15,174 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 07:06:15,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 07:06:15,192 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2020-10-20 07:06:15,194 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 18 states. Second operand 2 states. [2020-10-20 07:06:15,249 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 18 states.. Second operand 2 states. Result 36 states and 56 transitions. Complement of second has 6 states. [2020-10-20 07:06:15,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-10-20 07:06:15,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-10-20 07:06:15,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 29 transitions. [2020-10-20 07:06:15,255 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 29 transitions. Stem has 2 letters. Loop has 1 letters. [2020-10-20 07:06:15,255 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 07:06:15,256 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 29 transitions. Stem has 3 letters. Loop has 1 letters. [2020-10-20 07:06:15,256 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 07:06:15,256 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 29 transitions. Stem has 2 letters. Loop has 2 letters. [2020-10-20 07:06:15,256 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 07:06:15,257 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 36 states and 56 transitions. [2020-10-20 07:06:15,261 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2020-10-20 07:06:15,266 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 36 states to 15 states and 22 transitions. [2020-10-20 07:06:15,267 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 13 [2020-10-20 07:06:15,268 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 14 [2020-10-20 07:06:15,269 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 22 transitions. [2020-10-20 07:06:15,269 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-20 07:06:15,269 INFO L691 BuchiCegarLoop]: Abstraction has 15 states and 22 transitions. [2020-10-20 07:06:15,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states and 22 transitions. [2020-10-20 07:06:15,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2020-10-20 07:06:15,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-10-20 07:06:15,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 22 transitions. [2020-10-20 07:06:15,300 INFO L714 BuchiCegarLoop]: Abstraction has 15 states and 22 transitions. [2020-10-20 07:06:15,300 INFO L594 BuchiCegarLoop]: Abstraction has 15 states and 22 transitions. [2020-10-20 07:06:15,300 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-10-20 07:06:15,301 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states and 22 transitions. [2020-10-20 07:06:15,302 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2020-10-20 07:06:15,302 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 07:06:15,302 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 07:06:15,302 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2020-10-20 07:06:15,303 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1] [2020-10-20 07:06:15,303 INFO L794 eck$LassoCheckResult]: Stem: 99#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(9); 97#L-1 havoc main_#res;havoc main_#t~nondet3, main_#t~nondet4, main_#t~nondet5, main_~i~0, main_~pvlen~0, main_~tmp___1~0, main_~k~0, main_~n~0, main_~j~0;havoc main_~i~0;havoc main_~pvlen~0;havoc main_~tmp___1~0;main_~k~0 := 0;havoc main_~n~0;main_~i~0 := 0;main_~pvlen~0 := main_#t~nondet3;havoc main_#t~nondet3; 94#L31-2 assume !(0 != main_#t~nondet4 && main_~i~0 <= 1000000);havoc main_#t~nondet4; 89#L31-3 assume !(main_~i~0 > main_~pvlen~0); 90#L34-1 main_~i~0 := 0; 100#L38-2 [2020-10-20 07:06:15,303 INFO L796 eck$LassoCheckResult]: Loop: 100#L38-2 assume !!(0 != main_#t~nondet5 && main_~i~0 <= 1000000);havoc main_#t~nondet5;main_~tmp___1~0 := main_~i~0;main_~i~0 := 1 + main_~i~0;main_~k~0 := 1 + main_~k~0; 100#L38-2 [2020-10-20 07:06:15,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 07:06:15,303 INFO L82 PathProgramCache]: Analyzing trace with hash 28697992, now seen corresponding path program 1 times [2020-10-20 07:06:15,304 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 07:06:15,304 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34711081] [2020-10-20 07:06:15,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 07:06:15,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 07:06:15,317 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 07:06:15,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 07:06:15,328 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 07:06:15,332 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 07:06:15,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 07:06:15,333 INFO L82 PathProgramCache]: Analyzing trace with hash 61, now seen corresponding path program 1 times [2020-10-20 07:06:15,333 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 07:06:15,334 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971450824] [2020-10-20 07:06:15,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 07:06:15,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 07:06:15,339 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 07:06:15,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 07:06:15,342 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 07:06:15,344 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 07:06:15,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 07:06:15,345 INFO L82 PathProgramCache]: Analyzing trace with hash 889637782, now seen corresponding path program 1 times [2020-10-20 07:06:15,345 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 07:06:15,345 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535659278] [2020-10-20 07:06:15,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 07:06:15,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 07:06:15,358 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 07:06:15,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 07:06:15,370 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 07:06:15,375 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 07:06:15,417 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 07:06:15,417 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 07:06:15,417 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 07:06:15,417 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 07:06:15,417 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-20 07:06:15,417 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 07:06:15,418 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 07:06:15,418 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 07:06:15,418 INFO L133 ssoRankerPreferences]: Filename of dumped script: fragtest_simple.i_Iteration2_Loop [2020-10-20 07:06:15,418 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 07:06:15,418 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 07:06:15,420 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 07:06:15,424 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 07:06:15,433 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 07:06:15,495 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 07:06:15,496 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 07:06:15,503 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 07:06:15,503 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 07:06:15,509 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-10-20 07:06:15,509 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet5=-5} Honda state: {ULTIMATE.start_main_#t~nondet5=-5} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 07:06:15,558 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 07:06:15,558 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 07:06:15,607 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-20 07:06:15,607 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 07:06:15,646 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-20 07:06:15,648 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 07:06:15,648 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 07:06:15,648 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 07:06:15,649 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 07:06:15,649 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-20 07:06:15,649 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 07:06:15,649 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 07:06:15,649 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 07:06:15,649 INFO L133 ssoRankerPreferences]: Filename of dumped script: fragtest_simple.i_Iteration2_Loop [2020-10-20 07:06:15,649 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 07:06:15,649 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 07:06:15,651 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 07:06:15,659 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 07:06:15,669 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 07:06:15,732 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 07:06:15,733 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-20 07:06:15,743 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 [2020-10-20 07:06:15,745 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 07:06:15,745 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 07:06:15,745 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 07:06:15,746 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2020-10-20 07:06:15,746 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 07:06:15,747 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2020-10-20 07:06:15,747 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-10-20 07:06:15,750 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 07:06:15,786 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 [2020-10-20 07:06:15,788 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 07:06:15,788 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 07:06:15,789 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 07:06:15,789 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 07:06:15,789 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 07:06:15,791 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 07:06:15,791 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 07:06:15,794 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-20 07:06:15,798 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-10-20 07:06:15,798 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 07:06:15,806 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-20 07:06:15,807 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-20 07:06:15,807 INFO L510 LassoAnalysis]: Proved termination. [2020-10-20 07:06:15,807 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -2*ULTIMATE.start_main_~i~0 + 2000001 Supporting invariants [] Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 07:06:15,839 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-20 07:06:15,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 07:06:15,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 07:06:15,868 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-20 07:06:15,869 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 07:06:15,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 07:06:15,876 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-20 07:06:15,877 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 07:06:15,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 07:06:15,877 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2020-10-20 07:06:15,877 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 15 states and 22 transitions. cyclomatic complexity: 10 Second operand 2 states. [2020-10-20 07:06:15,895 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 15 states and 22 transitions. cyclomatic complexity: 10. Second operand 2 states. Result 35 states and 49 transitions. Complement of second has 6 states. [2020-10-20 07:06:15,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-10-20 07:06:15,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-10-20 07:06:15,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 27 transitions. [2020-10-20 07:06:15,897 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 27 transitions. Stem has 5 letters. Loop has 1 letters. [2020-10-20 07:06:15,898 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 07:06:15,898 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 27 transitions. Stem has 6 letters. Loop has 1 letters. [2020-10-20 07:06:15,898 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 07:06:15,898 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 27 transitions. Stem has 5 letters. Loop has 2 letters. [2020-10-20 07:06:15,899 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 07:06:15,899 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 35 states and 49 transitions. [2020-10-20 07:06:15,901 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2020-10-20 07:06:15,902 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 35 states to 19 states and 26 transitions. [2020-10-20 07:06:15,902 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 16 [2020-10-20 07:06:15,902 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 17 [2020-10-20 07:06:15,902 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 26 transitions. [2020-10-20 07:06:15,902 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-20 07:06:15,903 INFO L691 BuchiCegarLoop]: Abstraction has 19 states and 26 transitions. [2020-10-20 07:06:15,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states and 26 transitions. [2020-10-20 07:06:15,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 18. [2020-10-20 07:06:15,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-10-20 07:06:15,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 25 transitions. [2020-10-20 07:06:15,905 INFO L714 BuchiCegarLoop]: Abstraction has 18 states and 25 transitions. [2020-10-20 07:06:15,905 INFO L594 BuchiCegarLoop]: Abstraction has 18 states and 25 transitions. [2020-10-20 07:06:15,920 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2020-10-20 07:06:15,921 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 18 states and 25 transitions. [2020-10-20 07:06:15,930 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2020-10-20 07:06:15,931 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-10-20 07:06:15,931 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-10-20 07:06:15,932 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 07:06:15,933 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2020-10-20 07:06:15,933 INFO L794 eck$LassoCheckResult]: Stem: 188#ULTIMATE.startENTRY #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(9); 186#L-1 havoc main_#res;havoc main_#t~nondet3, main_#t~nondet4, main_#t~nondet5, main_~i~0, main_~pvlen~0, main_~tmp___1~0, main_~k~0, main_~n~0, main_~j~0;havoc main_~i~0;havoc main_~pvlen~0;havoc main_~tmp___1~0;main_~k~0 := 0;havoc main_~n~0;main_~i~0 := 0;main_~pvlen~0 := main_#t~nondet3;havoc main_#t~nondet3; 182#L31-2 assume !(0 != main_#t~nondet4 && main_~i~0 <= 1000000);havoc main_#t~nondet4; 178#L31-3 assume !(main_~i~0 > main_~pvlen~0); 179#L34-1 main_~i~0 := 0; 190#L38-2 assume !(0 != main_#t~nondet5 && main_~i~0 <= 1000000);havoc main_#t~nondet5; 191#L38-3 main_~j~0 := 0;main_~n~0 := main_~i~0; 189#L45-2 assume !false;__VERIFIER_assert_#in~cond := (if main_~k~0 >= 0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 181#L18 assume !(0 == __VERIFIER_assert_~cond); 176#L18-2 [2020-10-20 07:06:15,933 INFO L796 eck$LassoCheckResult]: Loop: 176#L18-2 main_~k~0 := main_~k~0 - 1;main_~i~0 := main_~i~0 - 1;main_~j~0 := 1 + main_~j~0; 177#L50 assume !(main_~j~0 >= main_~n~0); 180#L45-2 assume !false;__VERIFIER_assert_#in~cond := (if main_~k~0 >= 0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 193#L18 assume !(0 == __VERIFIER_assert_~cond); 176#L18-2 [2020-10-20 07:06:15,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 07:06:15,936 INFO L82 PathProgramCache]: Analyzing trace with hash -1044045572, now seen corresponding path program 1 times [2020-10-20 07:06:15,936 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 07:06:15,937 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28680297] [2020-10-20 07:06:15,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 07:06:15,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 07:06:15,988 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 07:06:16,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 07:06:16,019 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 07:06:16,027 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 07:06:16,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 07:06:16,028 INFO L82 PathProgramCache]: Analyzing trace with hash 2774836, now seen corresponding path program 1 times [2020-10-20 07:06:16,028 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 07:06:16,028 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911744971] [2020-10-20 07:06:16,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 07:06:16,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 07:06:16,038 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 07:06:16,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 07:06:16,051 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 07:06:16,053 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 07:06:16,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 07:06:16,054 INFO L82 PathProgramCache]: Analyzing trace with hash 674267823, now seen corresponding path program 1 times [2020-10-20 07:06:16,054 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 07:06:16,055 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541256765] [2020-10-20 07:06:16,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 07:06:16,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 07:06:16,173 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 07:06:16,173 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541256765] [2020-10-20 07:06:16,175 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 07:06:16,175 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-20 07:06:16,175 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516823807] [2020-10-20 07:06:16,261 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 07:06:16,262 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 07:06:16,262 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 07:06:16,262 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 07:06:16,262 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-10-20 07:06:16,262 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 07:06:16,262 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 07:06:16,263 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 07:06:16,263 INFO L133 ssoRankerPreferences]: Filename of dumped script: fragtest_simple.i_Iteration3_Loop [2020-10-20 07:06:16,263 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 07:06:16,263 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 07:06:16,267 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 07:06:16,285 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 07:06:16,292 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 07:06:16,298 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 07:06:16,375 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 07:06:16,375 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 07:06:16,381 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-10-20 07:06:16,381 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 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 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 07:06:16,412 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-10-20 07:06:16,412 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-10-20 07:06:16,723 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-10-20 07:06:16,725 INFO L210 LassoAnalysis]: Preferences: [2020-10-20 07:06:16,726 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-10-20 07:06:16,726 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-10-20 07:06:16,726 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-10-20 07:06:16,726 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-10-20 07:06:16,727 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 07:06:16,727 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-10-20 07:06:16,727 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-10-20 07:06:16,727 INFO L133 ssoRankerPreferences]: Filename of dumped script: fragtest_simple.i_Iteration3_Loop [2020-10-20 07:06:16,727 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-10-20 07:06:16,727 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-10-20 07:06:16,730 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 07:06:16,738 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 07:06:16,753 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 07:06:16,756 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-10-20 07:06:16,828 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-10-20 07:06:16,828 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 07:06:16,840 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 [2020-10-20 07:06:16,842 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-10-20 07:06:16,842 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-10-20 07:06:16,842 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-10-20 07:06:16,842 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-10-20 07:06:16,843 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-10-20 07:06:16,844 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-10-20 07:06:16,844 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 07:06:16,850 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-10-20 07:06:16,858 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2020-10-20 07:06:16,858 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-10-20 07:06:16,866 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-10-20 07:06:16,866 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-10-20 07:06:16,866 INFO L510 LassoAnalysis]: Proved termination. [2020-10-20 07:06:16,866 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~n~0, ULTIMATE.start_main_~j~0) = 1*ULTIMATE.start_main_~n~0 - 1*ULTIMATE.start_main_~j~0 Supporting invariants [] Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-10-20 07:06:16,903 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-10-20 07:06:16,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 07:06:16,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 07:06:16,934 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-20 07:06:16,935 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 07:06:16,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 07:06:16,944 INFO L263 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-20 07:06:16,944 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-20 07:06:16,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 07:06:16,997 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2020-10-20 07:06:16,997 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 18 states and 25 transitions. cyclomatic complexity: 10 Second operand 4 states. [2020-10-20 07:06:17,020 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 18 states and 25 transitions. cyclomatic complexity: 10. Second operand 4 states. Result 31 states and 40 transitions. Complement of second has 7 states. [2020-10-20 07:06:17,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2020-10-20 07:06:17,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-10-20 07:06:17,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 30 transitions. [2020-10-20 07:06:17,021 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 30 transitions. Stem has 9 letters. Loop has 4 letters. [2020-10-20 07:06:17,022 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 07:06:17,022 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 30 transitions. Stem has 13 letters. Loop has 4 letters. [2020-10-20 07:06:17,022 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 07:06:17,023 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 30 transitions. Stem has 9 letters. Loop has 8 letters. [2020-10-20 07:06:17,023 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-10-20 07:06:17,024 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 31 states and 40 transitions. [2020-10-20 07:06:17,025 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-10-20 07:06:17,025 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 31 states to 0 states and 0 transitions. [2020-10-20 07:06:17,025 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-10-20 07:06:17,025 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-10-20 07:06:17,026 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-10-20 07:06:17,026 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-20 07:06:17,026 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 07:06:17,026 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 07:06:17,026 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 07:06:17,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 07:06:17,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-20 07:06:17,032 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand 5 states. [2020-10-20 07:06:17,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 07:06:17,036 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2020-10-20 07:06:17,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-20 07:06:17,036 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2020-10-20 07:06:17,036 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-10-20 07:06:17,037 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2020-10-20 07:06:17,037 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-10-20 07:06:17,037 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-10-20 07:06:17,037 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-10-20 07:06:17,037 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-20 07:06:17,037 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 07:06:17,037 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 07:06:17,037 INFO L594 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-20 07:06:17,037 INFO L427 BuchiCegarLoop]: ======== Iteration 4============ [2020-10-20 07:06:17,038 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-10-20 07:06:17,038 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-10-20 07:06:17,038 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-10-20 07:06:17,046 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 20.10 07:06:17 BoogieIcfgContainer [2020-10-20 07:06:17,046 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-10-20 07:06:17,047 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 07:06:17,047 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 07:06:17,047 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 07:06:17,048 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 07:06:14" (3/4) ... [2020-10-20 07:06:17,052 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-20 07:06:17,052 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 07:06:17,055 INFO L168 Benchmark]: Toolchain (without parser) took 3551.74 ms. Allocated memory was 39.3 MB in the beginning and 50.3 MB in the end (delta: 11.0 MB). Free memory was 16.9 MB in the beginning and 9.1 MB in the end (delta: 7.9 MB). Peak memory consumption was 18.9 MB. Max. memory is 14.3 GB. [2020-10-20 07:06:17,056 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 30.9 MB. Free memory was 6.0 MB in the beginning and 5.9 MB in the end (delta: 43.3 kB). Peak memory consumption was 43.3 kB. Max. memory is 14.3 GB. [2020-10-20 07:06:17,057 INFO L168 Benchmark]: CACSL2BoogieTranslator took 308.59 ms. Allocated memory was 39.3 MB in the beginning and 40.4 MB in the end (delta: 1.0 MB). Free memory was 16.1 MB in the beginning and 17.1 MB in the end (delta: -938.7 kB). Peak memory consumption was 8.3 MB. Max. memory is 14.3 GB. [2020-10-20 07:06:17,058 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.98 ms. Allocated memory is still 40.4 MB. Free memory was 16.9 MB in the beginning and 15.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 14.3 GB. [2020-10-20 07:06:17,058 INFO L168 Benchmark]: Boogie Preprocessor took 23.23 ms. Allocated memory is still 40.4 MB. Free memory was 15.3 MB in the beginning and 14.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 14.3 GB. [2020-10-20 07:06:17,059 INFO L168 Benchmark]: RCFGBuilder took 300.01 ms. Allocated memory was 40.4 MB in the beginning and 43.0 MB in the end (delta: 2.6 MB). Free memory was 14.0 MB in the beginning and 17.8 MB in the end (delta: -3.8 MB). Peak memory consumption was 5.1 MB. Max. memory is 14.3 GB. [2020-10-20 07:06:17,060 INFO L168 Benchmark]: BuchiAutomizer took 2862.89 ms. Allocated memory was 43.0 MB in the beginning and 50.3 MB in the end (delta: 7.3 MB). Free memory was 17.5 MB in the beginning and 9.5 MB in the end (delta: 8.0 MB). Peak memory consumption was 15.4 MB. Max. memory is 14.3 GB. [2020-10-20 07:06:17,061 INFO L168 Benchmark]: Witness Printer took 5.59 ms. Allocated memory is still 50.3 MB. Free memory was 9.5 MB in the beginning and 9.1 MB in the end (delta: 468.0 kB). Peak memory consumption was 468.0 kB. Max. memory is 14.3 GB. [2020-10-20 07:06:17,090 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 30.9 MB. Free memory was 6.0 MB in the beginning and 5.9 MB in the end (delta: 43.3 kB). Peak memory consumption was 43.3 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 308.59 ms. Allocated memory was 39.3 MB in the beginning and 40.4 MB in the end (delta: 1.0 MB). Free memory was 16.1 MB in the beginning and 17.1 MB in the end (delta: -938.7 kB). Peak memory consumption was 8.3 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 40.98 ms. Allocated memory is still 40.4 MB. Free memory was 16.9 MB in the beginning and 15.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 23.23 ms. Allocated memory is still 40.4 MB. Free memory was 15.3 MB in the beginning and 14.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 14.3 GB. * RCFGBuilder took 300.01 ms. Allocated memory was 40.4 MB in the beginning and 43.0 MB in the end (delta: 2.6 MB). Free memory was 14.0 MB in the beginning and 17.8 MB in the end (delta: -3.8 MB). Peak memory consumption was 5.1 MB. Max. memory is 14.3 GB. * BuchiAutomizer took 2862.89 ms. Allocated memory was 43.0 MB in the beginning and 50.3 MB in the end (delta: 7.3 MB). Free memory was 17.5 MB in the beginning and 9.5 MB in the end (delta: 8.0 MB). Peak memory consumption was 15.4 MB. Max. memory is 14.3 GB. * Witness Printer took 5.59 ms. Allocated memory is still 50.3 MB. Free memory was 9.5 MB in the beginning and 9.1 MB in the end (delta: 468.0 kB). Peak memory consumption was 468.0 kB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 4 terminating modules (1 trivial, 3 deterministic, 0 nondeterministic). One deterministic module has affine ranking function -2 * i + 2000001 and consists of 4 locations. One deterministic module has affine ranking function -2 * i + 2000001 and consists of 4 locations. One deterministic module has affine ranking function n + -1 * j and consists of 5 locations. 1 modules have a trivial ranking function, the largest among these consists of 5 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.7s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 2.1s. Construction of modules took 0.0s. Büchi inclusion checks took 0.3s. Highest rank in rank-based complementation 3. Minimization of det autom 4. Minimization of nondet autom 0. Automata minimization 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 18 states and ocurred in iteration 2. Nontrivial modules had stage [3, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 30 SDtfs, 31 SDslu, 12 SDs, 0 SdLazy, 20 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT2 conc0 concLT1 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital22 mio100 ax100 hnf98 lsp55 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq165 hnf92 smp100 dnf100 smp100 tf112 neg100 sie103 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 16ms VariablesStem: 0 VariablesLoop: 1 DisjunctsStem: 1 DisjunctsLoop: 2 SupportingInvariants: 0 MotzkinApplications: 4 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 1 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.5s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...