./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 cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_0ee2bd8c-a181-4cfd-aa4a-494a2b1c0ec2/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_0ee2bd8c-a181-4cfd-aa4a-494a2b1c0ec2/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_0ee2bd8c-a181-4cfd-aa4a-494a2b1c0ec2/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_0ee2bd8c-a181-4cfd-aa4a-494a2b1c0ec2/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/loop-invgen/fragtest_simple.i -s /tmp/vcloud-vcloud-master/worker/working_dir_0ee2bd8c-a181-4cfd-aa4a-494a2b1c0ec2/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_0ee2bd8c-a181-4cfd-aa4a-494a2b1c0ec2/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a94bf9d893e116ed4626eae9cec69d948eb5bc31 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-cad4683 [2019-10-22 08:57:34,590 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 08:57:34,591 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 08:57:34,605 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 08:57:34,605 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 08:57:34,606 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 08:57:34,607 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 08:57:34,610 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 08:57:34,611 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 08:57:34,612 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 08:57:34,613 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 08:57:34,614 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 08:57:34,615 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 08:57:34,616 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 08:57:34,618 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 08:57:34,619 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 08:57:34,620 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 08:57:34,621 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 08:57:34,622 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 08:57:34,624 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 08:57:34,635 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 08:57:34,636 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 08:57:34,637 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 08:57:34,637 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 08:57:34,639 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 08:57:34,639 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 08:57:34,640 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 08:57:34,642 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 08:57:34,643 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 08:57:34,644 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 08:57:34,644 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 08:57:34,645 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 08:57:34,645 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 08:57:34,646 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 08:57:34,647 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 08:57:34,647 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 08:57:34,648 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 08:57:34,648 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 08:57:34,648 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 08:57:34,653 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 08:57:34,654 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 08:57:34,654 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_0ee2bd8c-a181-4cfd-aa4a-494a2b1c0ec2/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf [2019-10-22 08:57:34,673 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 08:57:34,674 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 08:57:34,675 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-22 08:57:34,675 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-22 08:57:34,675 INFO L138 SettingsManager]: * Use SBE=true [2019-10-22 08:57:34,675 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-10-22 08:57:34,675 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-10-22 08:57:34,676 INFO L138 SettingsManager]: * Use old map elimination=false [2019-10-22 08:57:34,676 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-10-22 08:57:34,676 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-10-22 08:57:34,676 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-10-22 08:57:34,676 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 08:57:34,677 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 08:57:34,677 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-10-22 08:57:34,677 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 08:57:34,677 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 08:57:34,677 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 08:57:34,677 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-10-22 08:57:34,678 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-10-22 08:57:34,678 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-10-22 08:57:34,678 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 08:57:34,678 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 08:57:34,678 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-10-22 08:57:34,678 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-22 08:57:34,679 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-10-22 08:57:34,679 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 08:57:34,679 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 08:57:34,679 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-10-22 08:57:34,679 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 08:57:34,680 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-22 08:57:34,680 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-10-22 08:57:34,681 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-10-22 08:57:34,681 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/working_dir_0ee2bd8c-a181-4cfd-aa4a-494a2b1c0ec2/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a94bf9d893e116ed4626eae9cec69d948eb5bc31 [2019-10-22 08:57:34,709 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 08:57:34,726 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 08:57:34,729 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 08:57:34,730 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 08:57:34,730 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 08:57:34,731 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_0ee2bd8c-a181-4cfd-aa4a-494a2b1c0ec2/bin/uautomizer/../../sv-benchmarks/c/loop-invgen/fragtest_simple.i [2019-10-22 08:57:34,781 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_0ee2bd8c-a181-4cfd-aa4a-494a2b1c0ec2/bin/uautomizer/data/c75259545/4ae2c60ec1b74f9596cc0b9b98f13979/FLAG6f9e9c88d [2019-10-22 08:57:35,193 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 08:57:35,194 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_0ee2bd8c-a181-4cfd-aa4a-494a2b1c0ec2/sv-benchmarks/c/loop-invgen/fragtest_simple.i [2019-10-22 08:57:35,205 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_0ee2bd8c-a181-4cfd-aa4a-494a2b1c0ec2/bin/uautomizer/data/c75259545/4ae2c60ec1b74f9596cc0b9b98f13979/FLAG6f9e9c88d [2019-10-22 08:57:35,573 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_0ee2bd8c-a181-4cfd-aa4a-494a2b1c0ec2/bin/uautomizer/data/c75259545/4ae2c60ec1b74f9596cc0b9b98f13979 [2019-10-22 08:57:35,575 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 08:57:35,576 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 08:57:35,577 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 08:57:35,577 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 08:57:35,579 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 08:57:35,580 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 08:57:35" (1/1) ... [2019-10-22 08:57:35,582 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@226dc3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:57:35, skipping insertion in model container [2019-10-22 08:57:35,582 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 08:57:35" (1/1) ... [2019-10-22 08:57:35,588 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 08:57:35,607 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 08:57:35,771 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 08:57:35,775 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 08:57:35,911 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 08:57:35,927 INFO L192 MainTranslator]: Completed translation [2019-10-22 08:57:35,927 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:57:35 WrapperNode [2019-10-22 08:57:35,927 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 08:57:35,930 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 08:57:35,930 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 08:57:35,930 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 08:57:35,940 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:57:35" (1/1) ... [2019-10-22 08:57:35,946 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:57:35" (1/1) ... [2019-10-22 08:57:35,966 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 08:57:35,966 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 08:57:35,966 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 08:57:35,966 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 08:57:35,976 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:57:35" (1/1) ... [2019-10-22 08:57:35,977 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:57:35" (1/1) ... [2019-10-22 08:57:35,977 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:57:35" (1/1) ... [2019-10-22 08:57:35,977 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:57:35" (1/1) ... [2019-10-22 08:57:35,979 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:57:35" (1/1) ... [2019-10-22 08:57:35,985 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:57:35" (1/1) ... [2019-10-22 08:57:35,986 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:57:35" (1/1) ... [2019-10-22 08:57:35,987 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 08:57:35,988 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 08:57:35,988 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 08:57:35,988 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 08:57:35,989 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:57:35" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0ee2bd8c-a181-4cfd-aa4a-494a2b1c0ec2/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 [2019-10-22 08:57:36,061 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 08:57:36,061 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 08:57:36,323 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 08:57:36,323 INFO L284 CfgBuilder]: Removed 9 assume(true) statements. [2019-10-22 08:57:36,324 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:57:36 BoogieIcfgContainer [2019-10-22 08:57:36,325 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 08:57:36,325 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-10-22 08:57:36,325 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-10-22 08:57:36,328 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-10-22 08:57:36,329 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-10-22 08:57:36,329 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 22.10 08:57:35" (1/3) ... [2019-10-22 08:57:36,329 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1099692a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 22.10 08:57:36, skipping insertion in model container [2019-10-22 08:57:36,330 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-10-22 08:57:36,330 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:57:35" (2/3) ... [2019-10-22 08:57:36,330 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1099692a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 22.10 08:57:36, skipping insertion in model container [2019-10-22 08:57:36,330 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-10-22 08:57:36,330 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:57:36" (3/3) ... [2019-10-22 08:57:36,331 INFO L371 chiAutomizerObserver]: Analyzing ICFG fragtest_simple.i [2019-10-22 08:57:36,372 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-10-22 08:57:36,372 INFO L357 BuchiCegarLoop]: Hoare is false [2019-10-22 08:57:36,373 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-10-22 08:57:36,373 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 08:57:36,373 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 08:57:36,373 INFO L361 BuchiCegarLoop]: Difference is false [2019-10-22 08:57:36,373 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 08:57:36,373 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-10-22 08:57:36,386 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states. [2019-10-22 08:57:36,405 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 7 [2019-10-22 08:57:36,405 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-10-22 08:57:36,405 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-10-22 08:57:36,410 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-10-22 08:57:36,410 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1] [2019-10-22 08:57:36,411 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-10-22 08:57:36,411 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states. [2019-10-22 08:57:36,412 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 7 [2019-10-22 08:57:36,413 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-10-22 08:57:36,414 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-10-22 08:57:36,414 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-10-22 08:57:36,414 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1] [2019-10-22 08:57:36,419 INFO L791 eck$LassoCheckResult]: Stem: 10#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_~i~0, main_~pvlen~0, main_~tmp___1~0, main_~k~0, main_~n~0, main_~j~0;havoc main_~i~0;havoc main_~pvlen~0;havoc main_~tmp___1~0;main_~k~0 := 0;havoc main_~n~0;main_~i~0 := 0;main_~pvlen~0 := main_#t~nondet1;havoc main_#t~nondet1; 3#L17-2true [2019-10-22 08:57:36,419 INFO L793 eck$LassoCheckResult]: Loop: 3#L17-2true assume !!(0 != main_#t~nondet2 && main_~i~0 <= 1000000);havoc main_#t~nondet2;main_~i~0 := 1 + main_~i~0; 3#L17-2true [2019-10-22 08:57:36,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:57:36,423 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2019-10-22 08:57:36,430 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:57:36,430 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40324867] [2019-10-22 08:57:36,430 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:57:36,430 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:57:36,431 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:57:36,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:57:36,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:57:36,506 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:57:36,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:57:36,507 INFO L82 PathProgramCache]: Analyzing trace with hash 41, now seen corresponding path program 1 times [2019-10-22 08:57:36,507 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:57:36,507 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816521470] [2019-10-22 08:57:36,507 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:57:36,507 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:57:36,507 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:57:36,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:57:36,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:57:36,518 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:57:36,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:57:36,519 INFO L82 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 1 times [2019-10-22 08:57:36,519 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:57:36,520 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985345516] [2019-10-22 08:57:36,520 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:57:36,520 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:57:36,520 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:57:36,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:57:36,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:57:36,530 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:57:36,572 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 08:57:36,572 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 08:57:36,573 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 08:57:36,573 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 08:57:36,573 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2019-10-22 08:57:36,573 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:57:36,573 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 08:57:36,573 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 08:57:36,573 INFO L131 ssoRankerPreferences]: Filename of dumped script: fragtest_simple.i_Iteration1_Loop [2019-10-22 08:57:36,574 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 08:57:36,574 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 08:57:36,592 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:57:36,604 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:57:36,648 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 08:57:36,649 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0ee2bd8c-a181-4cfd-aa4a-494a2b1c0ec2/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 [2019-10-22 08:57:36,655 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 08:57:36,655 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0ee2bd8c-a181-4cfd-aa4a-494a2b1c0ec2/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 [2019-10-22 08:57:36,666 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-10-22 08:57:36,666 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-10-22 08:57:36,674 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-10-22 08:57:36,676 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 08:57:36,676 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 08:57:36,677 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 08:57:36,677 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 08:57:36,677 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2019-10-22 08:57:36,677 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:57:36,677 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 08:57:36,677 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 08:57:36,677 INFO L131 ssoRankerPreferences]: Filename of dumped script: fragtest_simple.i_Iteration1_Loop [2019-10-22 08:57:36,677 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 08:57:36,677 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 08:57:36,679 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:57:36,686 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:57:36,715 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 08:57:36,720 INFO L489 LassoAnalysis]: Using template 'affine'. [2019-10-22 08:57:36,722 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 [2019-10-22 08:57:36,723 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 08:57:36,723 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-10-22 08:57:36,724 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 08:57:36,724 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 08:57:36,724 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 08:57:36,726 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-10-22 08:57:36,727 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-10-22 08:57:36,733 INFO L419 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-10-22 08:57:36,740 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-10-22 08:57:36,741 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2019-10-22 08:57:36,742 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-10-22 08:57:36,743 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-10-22 08:57:36,743 INFO L510 LassoAnalysis]: Proved termination. [2019-10-22 08:57:36,744 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -2*ULTIMATE.start_main_~i~0 + 2000001 Supporting invariants [] [2019-10-22 08:57:36,747 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-10-22 08:57:36,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:57:36,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:57:36,781 INFO L256 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-22 08:57:36,782 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:57:36,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:57:36,790 WARN L254 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-22 08:57:36,791 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:57:36,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:57:36,811 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 [2019-10-22 08:57:36,812 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 15 states. Second operand 2 states. [2019-10-22 08:57:36,954 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 15 states.. Second operand 2 states. Result 31 states and 49 transitions. Complement of second has 6 states. [2019-10-22 08:57:36,954 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-10-22 08:57:36,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2019-10-22 08:57:36,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 25 transitions. [2019-10-22 08:57:36,957 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 25 transitions. Stem has 1 letters. Loop has 1 letters. [2019-10-22 08:57:36,958 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:57:36,958 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 25 transitions. Stem has 2 letters. Loop has 1 letters. [2019-10-22 08:57:36,958 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:57:36,958 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 25 transitions. Stem has 1 letters. Loop has 2 letters. [2019-10-22 08:57:36,958 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:57:36,959 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 31 states and 49 transitions. [2019-10-22 08:57:36,962 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2019-10-22 08:57:36,965 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 31 states to 12 states and 18 transitions. [2019-10-22 08:57:36,966 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2019-10-22 08:57:36,967 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2019-10-22 08:57:36,967 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 18 transitions. [2019-10-22 08:57:36,968 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-10-22 08:57:36,968 INFO L688 BuchiCegarLoop]: Abstraction has 12 states and 18 transitions. [2019-10-22 08:57:36,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states and 18 transitions. [2019-10-22 08:57:36,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2019-10-22 08:57:36,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-10-22 08:57:36,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 18 transitions. [2019-10-22 08:57:36,995 INFO L711 BuchiCegarLoop]: Abstraction has 12 states and 18 transitions. [2019-10-22 08:57:36,995 INFO L591 BuchiCegarLoop]: Abstraction has 12 states and 18 transitions. [2019-10-22 08:57:36,995 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-10-22 08:57:36,995 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states and 18 transitions. [2019-10-22 08:57:36,996 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2019-10-22 08:57:36,996 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-10-22 08:57:36,996 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-10-22 08:57:36,998 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2019-10-22 08:57:36,998 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1] [2019-10-22 08:57:36,998 INFO L791 eck$LassoCheckResult]: Stem: 83#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_~i~0, main_~pvlen~0, main_~tmp___1~0, main_~k~0, main_~n~0, main_~j~0;havoc main_~i~0;havoc main_~pvlen~0;havoc main_~tmp___1~0;main_~k~0 := 0;havoc main_~n~0;main_~i~0 := 0;main_~pvlen~0 := main_#t~nondet1;havoc main_#t~nondet1; 76#L17-2 assume !(0 != main_#t~nondet2 && main_~i~0 <= 1000000);havoc main_#t~nondet2; 77#L17-3 assume !(main_~i~0 > main_~pvlen~0); 87#L20-1 main_~i~0 := 0; 84#L24-2 [2019-10-22 08:57:36,998 INFO L793 eck$LassoCheckResult]: Loop: 84#L24-2 assume !!(0 != main_#t~nondet3 && main_~i~0 <= 1000000);havoc main_#t~nondet3;main_~tmp___1~0 := main_~i~0;main_~i~0 := 1 + main_~i~0;main_~k~0 := 1 + main_~k~0; 84#L24-2 [2019-10-22 08:57:36,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:57:36,999 INFO L82 PathProgramCache]: Analyzing trace with hash 961578, now seen corresponding path program 1 times [2019-10-22 08:57:36,999 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:57:36,999 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324970738] [2019-10-22 08:57:36,999 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:57:36,999 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:57:36,999 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:57:37,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:57:37,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:57:37,010 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:57:37,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:57:37,010 INFO L82 PathProgramCache]: Analyzing trace with hash 60, now seen corresponding path program 1 times [2019-10-22 08:57:37,010 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:57:37,011 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783566250] [2019-10-22 08:57:37,011 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:57:37,011 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:57:37,011 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:57:37,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:57:37,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:57:37,019 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:57:37,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:57:37,020 INFO L82 PathProgramCache]: Analyzing trace with hash 29808947, now seen corresponding path program 1 times [2019-10-22 08:57:37,020 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:57:37,025 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795922809] [2019-10-22 08:57:37,025 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:57:37,026 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:57:37,026 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:57:37,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:57:37,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:57:37,037 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:57:37,058 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 08:57:37,059 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 08:57:37,059 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 08:57:37,059 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 08:57:37,059 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2019-10-22 08:57:37,059 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:57:37,059 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 08:57:37,059 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 08:57:37,059 INFO L131 ssoRankerPreferences]: Filename of dumped script: fragtest_simple.i_Iteration2_Loop [2019-10-22 08:57:37,059 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 08:57:37,060 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 08:57:37,061 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:57:37,069 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:57:37,072 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:57:37,128 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 08:57:37,129 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0ee2bd8c-a181-4cfd-aa4a-494a2b1c0ec2/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 [2019-10-22 08:57:37,137 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 08:57:37,137 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0ee2bd8c-a181-4cfd-aa4a-494a2b1c0ec2/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 [2019-10-22 08:57:37,147 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-10-22 08:57:37,148 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-10-22 08:57:37,159 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-10-22 08:57:37,160 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 08:57:37,160 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 08:57:37,160 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 08:57:37,160 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 08:57:37,161 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2019-10-22 08:57:37,161 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:57:37,161 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 08:57:37,161 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 08:57:37,161 INFO L131 ssoRankerPreferences]: Filename of dumped script: fragtest_simple.i_Iteration2_Loop [2019-10-22 08:57:37,161 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 08:57:37,161 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 08:57:37,162 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:57:37,170 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:57:37,173 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:57:37,216 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 08:57:37,217 INFO L489 LassoAnalysis]: Using template 'affine'. [2019-10-22 08:57:37,217 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 [2019-10-22 08:57:37,218 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 08:57:37,218 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-10-22 08:57:37,218 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 08:57:37,218 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 08:57:37,218 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 08:57:37,219 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-10-22 08:57:37,219 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-10-22 08:57:37,226 INFO L419 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-10-22 08:57:37,231 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-10-22 08:57:37,231 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2019-10-22 08:57:37,232 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-10-22 08:57:37,232 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-10-22 08:57:37,232 INFO L510 LassoAnalysis]: Proved termination. [2019-10-22 08:57:37,232 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -2*ULTIMATE.start_main_~i~0 + 2000001 Supporting invariants [] [2019-10-22 08:57:37,233 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-10-22 08:57:37,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:57:37,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:57:37,252 INFO L256 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-22 08:57:37,252 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:57:37,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:57:37,269 INFO L256 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-22 08:57:37,269 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:57:37,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:57:37,270 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 [2019-10-22 08:57:37,270 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states and 18 transitions. cyclomatic complexity: 9 Second operand 2 states. [2019-10-22 08:57:37,291 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 12 states and 18 transitions. cyclomatic complexity: 9. Second operand 2 states. Result 28 states and 39 transitions. Complement of second has 6 states. [2019-10-22 08:57:37,292 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-10-22 08:57:37,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2019-10-22 08:57:37,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 21 transitions. [2019-10-22 08:57:37,293 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 21 transitions. Stem has 4 letters. Loop has 1 letters. [2019-10-22 08:57:37,293 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:57:37,294 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 21 transitions. Stem has 5 letters. Loop has 1 letters. [2019-10-22 08:57:37,294 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:57:37,294 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 21 transitions. Stem has 4 letters. Loop has 2 letters. [2019-10-22 08:57:37,294 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:57:37,294 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 28 states and 39 transitions. [2019-10-22 08:57:37,295 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2019-10-22 08:57:37,296 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 28 states to 16 states and 22 transitions. [2019-10-22 08:57:37,296 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 13 [2019-10-22 08:57:37,305 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 14 [2019-10-22 08:57:37,305 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 22 transitions. [2019-10-22 08:57:37,305 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-10-22 08:57:37,306 INFO L688 BuchiCegarLoop]: Abstraction has 16 states and 22 transitions. [2019-10-22 08:57:37,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states and 22 transitions. [2019-10-22 08:57:37,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 15. [2019-10-22 08:57:37,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-10-22 08:57:37,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 21 transitions. [2019-10-22 08:57:37,307 INFO L711 BuchiCegarLoop]: Abstraction has 15 states and 21 transitions. [2019-10-22 08:57:37,307 INFO L591 BuchiCegarLoop]: Abstraction has 15 states and 21 transitions. [2019-10-22 08:57:37,307 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2019-10-22 08:57:37,308 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states and 21 transitions. [2019-10-22 08:57:37,308 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2019-10-22 08:57:37,308 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-10-22 08:57:37,309 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-10-22 08:57:37,309 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 08:57:37,309 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2019-10-22 08:57:37,309 INFO L791 eck$LassoCheckResult]: Stem: 159#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_~i~0, main_~pvlen~0, main_~tmp___1~0, main_~k~0, main_~n~0, main_~j~0;havoc main_~i~0;havoc main_~pvlen~0;havoc main_~tmp___1~0;main_~k~0 := 0;havoc main_~n~0;main_~i~0 := 0;main_~pvlen~0 := main_#t~nondet1;havoc main_#t~nondet1; 152#L17-2 assume !(0 != main_#t~nondet2 && main_~i~0 <= 1000000);havoc main_#t~nondet2; 153#L17-3 assume !(main_~i~0 > main_~pvlen~0); 164#L20-1 main_~i~0 := 0; 160#L24-2 assume !(0 != main_#t~nondet3 && main_~i~0 <= 1000000);havoc main_#t~nondet3; 155#L24-3 main_~j~0 := 0;main_~n~0 := main_~i~0; 156#L31-2 assume !false;__VERIFIER_assert_#in~cond := (if main_~k~0 >= 0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 163#L4 assume !(0 == __VERIFIER_assert_~cond); 158#L4-2 [2019-10-22 08:57:37,309 INFO L793 eck$LassoCheckResult]: Loop: 158#L4-2 main_~k~0 := main_~k~0 - 1;main_~i~0 := main_~i~0 - 1;main_~j~0 := 1 + main_~j~0; 162#L36 assume !(main_~j~0 >= main_~n~0); 165#L31-2 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; 166#L4 assume !(0 == __VERIFIER_assert_~cond); 158#L4-2 [2019-10-22 08:57:37,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:57:37,310 INFO L82 PathProgramCache]: Analyzing trace with hash -1019916713, now seen corresponding path program 1 times [2019-10-22 08:57:37,310 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:57:37,310 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908323336] [2019-10-22 08:57:37,310 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:57:37,310 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:57:37,310 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:57:37,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:57:37,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:57:37,334 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:57:37,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:57:37,335 INFO L82 PathProgramCache]: Analyzing trace with hash 2528781, now seen corresponding path program 1 times [2019-10-22 08:57:37,335 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:57:37,335 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557722133] [2019-10-22 08:57:37,335 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:57:37,335 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:57:37,336 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:57:37,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:57:37,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:57:37,347 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:57:37,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:57:37,348 INFO L82 PathProgramCache]: Analyzing trace with hash 1891682659, now seen corresponding path program 1 times [2019-10-22 08:57:37,348 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:57:37,348 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570284074] [2019-10-22 08:57:37,352 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:57:37,352 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:57:37,353 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:57:37,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:57:37,407 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:57:37,408 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570284074] [2019-10-22 08:57:37,408 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:57:37,408 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-22 08:57:37,409 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711121403] [2019-10-22 08:57:37,445 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 08:57:37,446 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 08:57:37,446 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 08:57:37,446 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 08:57:37,446 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2019-10-22 08:57:37,446 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:57:37,446 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 08:57:37,446 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 08:57:37,446 INFO L131 ssoRankerPreferences]: Filename of dumped script: fragtest_simple.i_Iteration3_Loop [2019-10-22 08:57:37,446 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 08:57:37,446 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 08:57:37,448 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:57:37,453 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:57:37,456 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:57:37,527 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 08:57:37,528 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0ee2bd8c-a181-4cfd-aa4a-494a2b1c0ec2/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 [2019-10-22 08:57:37,534 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 08:57:37,534 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0ee2bd8c-a181-4cfd-aa4a-494a2b1c0ec2/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) [2019-10-22 08:57:37,544 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-10-22 08:57:37,545 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 [2019-10-22 08:57:37,843 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-10-22 08:57:37,844 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 08:57:37,844 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 08:57:37,844 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 08:57:37,845 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 08:57:37,845 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2019-10-22 08:57:37,845 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:57:37,845 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 08:57:37,845 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 08:57:37,845 INFO L131 ssoRankerPreferences]: Filename of dumped script: fragtest_simple.i_Iteration3_Loop [2019-10-22 08:57:37,845 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 08:57:37,845 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 08:57:37,846 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:57:37,852 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:57:37,858 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2019-10-22 08:57:37,932 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 08:57:37,933 INFO L489 LassoAnalysis]: Using template 'affine'. [2019-10-22 08:57:37,933 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 [2019-10-22 08:57:37,934 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 08:57:37,934 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-10-22 08:57:37,934 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 08:57:37,935 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 08:57:37,935 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 08:57:37,935 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-10-22 08:57:37,935 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-10-22 08:57:37,941 INFO L419 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-10-22 08:57:37,950 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2019-10-22 08:57:37,956 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2019-10-22 08:57:37,957 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-10-22 08:57:37,957 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-10-22 08:57:37,957 INFO L510 LassoAnalysis]: Proved termination. [2019-10-22 08:57:37,957 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 [] [2019-10-22 08:57:37,957 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-10-22 08:57:37,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:57:37,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:57:37,980 INFO L256 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-22 08:57:37,981 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:57:37,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:57:37,988 INFO L256 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-22 08:57:37,989 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:57:38,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:57:38,029 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 [2019-10-22 08:57:38,029 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 15 states and 21 transitions. cyclomatic complexity: 9 Second operand 4 states. [2019-10-22 08:57:38,047 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 15 states and 21 transitions. cyclomatic complexity: 9. Second operand 4 states. Result 26 states and 33 transitions. Complement of second has 7 states. [2019-10-22 08:57:38,050 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 [2019-10-22 08:57:38,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-10-22 08:57:38,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 24 transitions. [2019-10-22 08:57:38,051 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 24 transitions. Stem has 8 letters. Loop has 4 letters. [2019-10-22 08:57:38,051 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:57:38,051 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 24 transitions. Stem has 12 letters. Loop has 4 letters. [2019-10-22 08:57:38,051 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:57:38,052 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 24 transitions. Stem has 8 letters. Loop has 8 letters. [2019-10-22 08:57:38,052 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:57:38,052 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 26 states and 33 transitions. [2019-10-22 08:57:38,053 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-10-22 08:57:38,053 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 26 states to 0 states and 0 transitions. [2019-10-22 08:57:38,053 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-10-22 08:57:38,053 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-10-22 08:57:38,054 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-10-22 08:57:38,054 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-10-22 08:57:38,054 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-22 08:57:38,054 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-22 08:57:38,054 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:57:38,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 08:57:38,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-10-22 08:57:38,058 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand 5 states. [2019-10-22 08:57:38,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:57:38,060 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2019-10-22 08:57:38,060 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-22 08:57:38,061 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2019-10-22 08:57:38,061 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-10-22 08:57:38,061 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2019-10-22 08:57:38,061 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-10-22 08:57:38,061 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-10-22 08:57:38,061 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-10-22 08:57:38,061 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-10-22 08:57:38,062 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-22 08:57:38,062 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-22 08:57:38,062 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-22 08:57:38,062 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2019-10-22 08:57:38,062 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2019-10-22 08:57:38,062 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-10-22 08:57:38,062 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2019-10-22 08:57:38,068 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 22.10 08:57:38 BoogieIcfgContainer [2019-10-22 08:57:38,068 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-10-22 08:57:38,068 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 08:57:38,069 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 08:57:38,069 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 08:57:38,069 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:57:36" (3/4) ... [2019-10-22 08:57:38,072 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-10-22 08:57:38,072 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 08:57:38,074 INFO L168 Benchmark]: Toolchain (without parser) took 2497.51 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 194.0 MB). Free memory was 944.5 MB in the beginning and 994.1 MB in the end (delta: -49.6 MB). Peak memory consumption was 144.4 MB. Max. memory is 11.5 GB. [2019-10-22 08:57:38,075 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 967.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 08:57:38,075 INFO L168 Benchmark]: CACSL2BoogieTranslator took 350.89 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 194.0 MB). Free memory was 944.5 MB in the beginning and 1.2 GB in the end (delta: -241.1 MB). Peak memory consumption was 22.8 MB. Max. memory is 11.5 GB. [2019-10-22 08:57:38,076 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.11 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 11.5 GB. [2019-10-22 08:57:38,076 INFO L168 Benchmark]: Boogie Preprocessor took 21.64 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 08:57:38,077 INFO L168 Benchmark]: RCFGBuilder took 336.92 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 11.5 GB. [2019-10-22 08:57:38,077 INFO L168 Benchmark]: BuchiAutomizer took 1742.94 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 994.1 MB in the end (delta: 168.8 MB). Peak memory consumption was 168.8 MB. Max. memory is 11.5 GB. [2019-10-22 08:57:38,078 INFO L168 Benchmark]: Witness Printer took 3.89 ms. Allocated memory is still 1.2 GB. Free memory is still 994.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 08:57:38,080 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 1.0 GB. Free memory is still 967.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 350.89 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 194.0 MB). Free memory was 944.5 MB in the beginning and 1.2 GB in the end (delta: -241.1 MB). Peak memory consumption was 22.8 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 36.11 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 21.64 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 336.92 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 1742.94 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 994.1 MB in the end (delta: 168.8 MB). Peak memory consumption was 168.8 MB. Max. memory is 11.5 GB. * Witness Printer took 3.89 ms. Allocated memory is still 1.2 GB. Free memory is still 994.1 MB. There was no memory consumed. 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 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 1.7s and 4 iterations. TraceHistogramMax:1. Analysis of lassos took 1.2s. Construction of modules took 0.0s. Büchi inclusion checks took 0.2s. 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 15 states and ocurred in iteration 2. Nontrivial modules had stage [3, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 25 SDtfs, 26 SDslu, 9 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: inital24 mio100 ax100 hnf99 lsp64 ukn100 mio100 lsp100 div100 bol100 ite112 ukn100 eq170 hnf91 smp85 dnf98 smp100 tf110 neg98 sie102 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 22ms VariablesStem: 0 VariablesLoop: 2 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.3s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...