./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-restricted-15/AlternKonv.c --full-output --architecture 64bit -------------------------------------------------------------------------------- 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_4c685f07-d836-416b-96c3-9d16aa71ed6c/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_4c685f07-d836-416b-96c3-9d16aa71ed6c/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_4c685f07-d836-416b-96c3-9d16aa71ed6c/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_4c685f07-d836-416b-96c3-9d16aa71ed6c/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-restricted-15/AlternKonv.c -s /tmp/vcloud-vcloud-master/worker/working_dir_4c685f07-d836-416b-96c3-9d16aa71ed6c/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_4c685f07-d836-416b-96c3-9d16aa71ed6c/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 475cf88887990488194ca7f61a6d05f74a450e7b ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM) --- Real Ultimate output --- This is Ultimate 0.1.24-cad4683 [2019-10-22 08:54:55,419 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 08:54:55,420 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 08:54:55,432 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 08:54:55,432 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 08:54:55,433 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 08:54:55,434 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 08:54:55,436 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 08:54:55,437 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 08:54:55,440 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 08:54:55,440 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 08:54:55,441 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 08:54:55,441 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 08:54:55,442 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 08:54:55,443 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 08:54:55,444 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 08:54:55,444 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 08:54:55,445 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 08:54:55,453 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 08:54:55,454 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 08:54:55,455 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 08:54:55,456 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 08:54:55,457 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 08:54:55,461 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 08:54:55,462 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 08:54:55,463 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 08:54:55,463 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 08:54:55,463 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 08:54:55,464 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 08:54:55,464 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 08:54:55,465 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 08:54:55,465 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 08:54:55,468 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 08:54:55,468 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 08:54:55,469 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 08:54:55,469 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 08:54:55,470 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 08:54:55,470 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 08:54:55,470 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 08:54:55,471 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 08:54:55,471 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 08:54:55,472 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_4c685f07-d836-416b-96c3-9d16aa71ed6c/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2019-10-22 08:54:55,487 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 08:54:55,488 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 08:54:55,489 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-22 08:54:55,489 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-22 08:54:55,489 INFO L138 SettingsManager]: * Use SBE=true [2019-10-22 08:54:55,489 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-10-22 08:54:55,489 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-10-22 08:54:55,489 INFO L138 SettingsManager]: * Use old map elimination=false [2019-10-22 08:54:55,500 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-10-22 08:54:55,500 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-10-22 08:54:55,501 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-10-22 08:54:55,501 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 08:54:55,501 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-10-22 08:54:55,501 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 08:54:55,501 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 08:54:55,501 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-10-22 08:54:55,501 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-10-22 08:54:55,502 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-10-22 08:54:55,502 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 08:54:55,502 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-10-22 08:54:55,502 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-22 08:54:55,502 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-10-22 08:54:55,502 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 08:54:55,503 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 08:54:55,503 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-10-22 08:54:55,503 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 08:54:55,503 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-22 08:54:55,503 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-10-22 08:54:55,504 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-10-22 08:54:55,504 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_4c685f07-d836-416b-96c3-9d16aa71ed6c/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 475cf88887990488194ca7f61a6d05f74a450e7b [2019-10-22 08:54:55,537 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 08:54:55,549 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 08:54:55,552 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 08:54:55,554 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 08:54:55,555 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 08:54:55,555 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_4c685f07-d836-416b-96c3-9d16aa71ed6c/bin/uautomizer/../../sv-benchmarks/c/termination-restricted-15/AlternKonv.c [2019-10-22 08:54:55,607 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_4c685f07-d836-416b-96c3-9d16aa71ed6c/bin/uautomizer/data/d3e725f0b/cdc231172c054c499e14a92718e9e6c0/FLAGd982dd0c4 [2019-10-22 08:54:56,021 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 08:54:56,021 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_4c685f07-d836-416b-96c3-9d16aa71ed6c/sv-benchmarks/c/termination-restricted-15/AlternKonv.c [2019-10-22 08:54:56,027 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_4c685f07-d836-416b-96c3-9d16aa71ed6c/bin/uautomizer/data/d3e725f0b/cdc231172c054c499e14a92718e9e6c0/FLAGd982dd0c4 [2019-10-22 08:54:56,041 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_4c685f07-d836-416b-96c3-9d16aa71ed6c/bin/uautomizer/data/d3e725f0b/cdc231172c054c499e14a92718e9e6c0 [2019-10-22 08:54:56,044 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 08:54:56,046 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 08:54:56,046 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 08:54:56,047 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 08:54:56,052 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 08:54:56,053 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 08:54:56" (1/1) ... [2019-10-22 08:54:56,055 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27536aae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:54:56, skipping insertion in model container [2019-10-22 08:54:56,055 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 08:54:56" (1/1) ... [2019-10-22 08:54:56,066 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 08:54:56,081 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 08:54:56,258 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 08:54:56,264 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 08:54:56,360 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 08:54:56,375 INFO L192 MainTranslator]: Completed translation [2019-10-22 08:54:56,376 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:54:56 WrapperNode [2019-10-22 08:54:56,376 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 08:54:56,377 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 08:54:56,377 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 08:54:56,377 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 08:54:56,386 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:54:56" (1/1) ... [2019-10-22 08:54:56,392 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:54:56" (1/1) ... [2019-10-22 08:54:56,411 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 08:54:56,411 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 08:54:56,411 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 08:54:56,411 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 08:54:56,421 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:54:56" (1/1) ... [2019-10-22 08:54:56,421 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:54:56" (1/1) ... [2019-10-22 08:54:56,421 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:54:56" (1/1) ... [2019-10-22 08:54:56,422 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:54:56" (1/1) ... [2019-10-22 08:54:56,424 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:54:56" (1/1) ... [2019-10-22 08:54:56,429 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:54:56" (1/1) ... [2019-10-22 08:54:56,431 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:54:56" (1/1) ... [2019-10-22 08:54:56,432 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 08:54:56,433 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 08:54:56,433 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 08:54:56,433 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 08:54:56,434 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:54:56" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_4c685f07-d836-416b-96c3-9d16aa71ed6c/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 08:54:56,503 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 08:54:56,503 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 08:54:56,667 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 08:54:56,668 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-10-22 08:54:56,669 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:54:56 BoogieIcfgContainer [2019-10-22 08:54:56,669 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 08:54:56,670 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-10-22 08:54:56,670 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-10-22 08:54:56,676 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-10-22 08:54:56,677 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-10-22 08:54:56,677 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 22.10 08:54:56" (1/3) ... [2019-10-22 08:54:56,680 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@68e55a33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 22.10 08:54:56, skipping insertion in model container [2019-10-22 08:54:56,680 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-10-22 08:54:56,680 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 08:54:56" (2/3) ... [2019-10-22 08:54:56,680 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@68e55a33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 22.10 08:54:56, skipping insertion in model container [2019-10-22 08:54:56,681 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-10-22 08:54:56,681 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:54:56" (3/3) ... [2019-10-22 08:54:56,682 INFO L371 chiAutomizerObserver]: Analyzing ICFG AlternKonv.c [2019-10-22 08:54:56,784 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-10-22 08:54:56,784 INFO L357 BuchiCegarLoop]: Hoare is false [2019-10-22 08:54:56,785 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-10-22 08:54:56,785 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 08:54:56,785 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 08:54:56,785 INFO L361 BuchiCegarLoop]: Difference is false [2019-10-22 08:54:56,785 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 08:54:56,785 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-10-22 08:54:56,813 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states. [2019-10-22 08:54:56,856 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2019-10-22 08:54:56,858 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-10-22 08:54:56,858 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-10-22 08:54:56,867 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-10-22 08:54:56,867 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-10-22 08:54:56,867 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-10-22 08:54:56,867 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states. [2019-10-22 08:54:56,868 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2019-10-22 08:54:56,869 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-10-22 08:54:56,869 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-10-22 08:54:56,869 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-10-22 08:54:56,869 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-10-22 08:54:56,877 INFO L791 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_~i~0;havoc main_~i~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0; 5#L18-2true [2019-10-22 08:54:56,877 INFO L793 eck$LassoCheckResult]: Loop: 5#L18-2true assume !!(0 != main_~i~0); 3#L10true assume main_~i~0 < 0;main_~i~0 := 2 + main_~i~0; 6#L12true assume !(main_~i~0 < 0); 5#L18-2true [2019-10-22 08:54:56,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:54:56,884 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2019-10-22 08:54:56,892 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:54:56,892 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177187880] [2019-10-22 08:54:56,892 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:56,893 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:56,893 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:54:56,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:54:56,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:54:56,981 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:54:56,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:54:56,983 INFO L82 PathProgramCache]: Analyzing trace with hash 39827, now seen corresponding path program 1 times [2019-10-22 08:54:56,983 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:54:56,983 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948158632] [2019-10-22 08:54:56,983 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:56,983 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:56,984 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:54:56,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:54:56,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:54:56,999 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:54:57,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:54:57,001 INFO L82 PathProgramCache]: Analyzing trace with hash 963348, now seen corresponding path program 1 times [2019-10-22 08:54:57,001 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:54:57,002 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001899876] [2019-10-22 08:54:57,002 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:57,002 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:57,002 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:54:57,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:54:57,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:54:57,020 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:54:57,101 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 08:54:57,102 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 08:54:57,102 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 08:54:57,102 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 08:54:57,103 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2019-10-22 08:54:57,103 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:54:57,103 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 08:54:57,103 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 08:54:57,103 INFO L131 ssoRankerPreferences]: Filename of dumped script: AlternKonv.c_Iteration1_Loop [2019-10-22 08:54:57,104 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 08:54:57,104 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 08:54:57,129 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 08:54:57,139 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 08:54:57,144 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 08:54:57,237 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 08:54:57,238 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_4c685f07-d836-416b-96c3-9d16aa71ed6c/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 08:54:57,244 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 08:54:57,245 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-10-22 08:54:57,254 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 08:54:57,255 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_4c685f07-d836-416b-96c3-9d16aa71ed6c/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 08:54:57,270 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 08:54:57,270 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-10-22 08:54:57,275 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 08:54:57,276 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_4c685f07-d836-416b-96c3-9d16aa71ed6c/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 08:54:57,286 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 08:54:57,287 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_4c685f07-d836-416b-96c3-9d16aa71ed6c/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 08:54:57,299 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-10-22 08:54:57,299 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-10-22 08:54:57,307 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-10-22 08:54:57,309 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 08:54:57,309 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 08:54:57,309 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 08:54:57,309 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 08:54:57,310 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2019-10-22 08:54:57,310 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:54:57,310 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 08:54:57,310 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 08:54:57,310 INFO L131 ssoRankerPreferences]: Filename of dumped script: AlternKonv.c_Iteration1_Loop [2019-10-22 08:54:57,311 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 08:54:57,311 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 08:54:57,312 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 08:54:57,316 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 08:54:57,320 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 08:54:57,470 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 08:54:57,475 INFO L489 LassoAnalysis]: Using template 'affine'. [2019-10-22 08:54:57,476 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 08:54:57,478 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 08:54:57,478 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 08:54:57,478 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 08:54:57,478 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 08:54:57,482 INFO L400 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-10-22 08:54:57,482 INFO L401 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-10-22 08:54:57,489 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-10-22 08:54:57,489 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 08:54:57,490 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 08:54:57,490 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 08:54:57,490 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 08:54:57,490 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 08:54:57,492 INFO L400 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-10-22 08:54:57,493 INFO L401 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-10-22 08:54:57,500 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-10-22 08:54:57,501 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 08:54:57,502 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 08:54:57,502 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-10-22 08:54:57,502 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 08:54:57,503 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 08:54:57,503 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 08:54:57,503 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-10-22 08:54:57,504 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-10-22 08:54:57,511 INFO L419 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-10-22 08:54:57,514 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2019-10-22 08:54:57,514 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2019-10-22 08:54:57,516 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-10-22 08:54:57,516 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-10-22 08:54:57,517 INFO L510 LassoAnalysis]: Proved termination. [2019-10-22 08:54:57,517 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2019-10-22 08:54:57,520 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-10-22 08:54:57,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:54:57,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:57,601 WARN L254 TraceCheckSpWp]: Trace formula consists of 4 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-22 08:54:57,602 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:54:57,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:57,615 WARN L254 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-22 08:54:57,616 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:54:57,653 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 08:54:57,666 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2019-10-22 08:54:57,667 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 10 states. Second operand 4 states. [2019-10-22 08:54:57,743 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 10 states.. Second operand 4 states. Result 32 states and 45 transitions. Complement of second has 6 states. [2019-10-22 08:54:57,745 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 08:54:57,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-10-22 08:54:57,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 17 transitions. [2019-10-22 08:54:57,749 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 1 letters. Loop has 3 letters. [2019-10-22 08:54:57,752 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:54:57,754 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 4 letters. Loop has 3 letters. [2019-10-22 08:54:57,754 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:54:57,755 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 17 transitions. Stem has 1 letters. Loop has 6 letters. [2019-10-22 08:54:57,756 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:54:57,757 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 32 states and 45 transitions. [2019-10-22 08:54:57,760 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2019-10-22 08:54:57,765 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 32 states to 14 states and 20 transitions. [2019-10-22 08:54:57,768 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2019-10-22 08:54:57,769 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2019-10-22 08:54:57,770 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 20 transitions. [2019-10-22 08:54:57,770 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-10-22 08:54:57,771 INFO L688 BuchiCegarLoop]: Abstraction has 14 states and 20 transitions. [2019-10-22 08:54:57,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states and 20 transitions. [2019-10-22 08:54:57,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 12. [2019-10-22 08:54:57,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-10-22 08:54:57,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 18 transitions. [2019-10-22 08:54:57,802 INFO L711 BuchiCegarLoop]: Abstraction has 12 states and 18 transitions. [2019-10-22 08:54:57,802 INFO L591 BuchiCegarLoop]: Abstraction has 12 states and 18 transitions. [2019-10-22 08:54:57,802 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-10-22 08:54:57,802 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states and 18 transitions. [2019-10-22 08:54:57,805 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2019-10-22 08:54:57,805 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-10-22 08:54:57,805 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-10-22 08:54:57,806 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2019-10-22 08:54:57,806 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-10-22 08:54:57,806 INFO L791 eck$LassoCheckResult]: Stem: 85#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0;havoc main_~i~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0; 86#L18-2 assume !!(0 != main_~i~0); 79#L10 assume !(main_~i~0 < 0);main_~i~0 := main_~i~0 - 2; 80#L18 [2019-10-22 08:54:57,806 INFO L793 eck$LassoCheckResult]: Loop: 80#L18 assume main_~i~0 > 0;main_~i~0 := -1 * main_~i~0; 89#L18-2 assume !!(0 != main_~i~0); 90#L10 assume !(main_~i~0 < 0);main_~i~0 := main_~i~0 - 2; 80#L18 [2019-10-22 08:54:57,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:54:57,807 INFO L82 PathProgramCache]: Analyzing trace with hash 31088, now seen corresponding path program 1 times [2019-10-22 08:54:57,807 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:54:57,808 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089449652] [2019-10-22 08:54:57,808 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:57,809 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:57,809 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:54:57,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:54:57,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:54:57,829 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:54:57,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:54:57,830 INFO L82 PathProgramCache]: Analyzing trace with hash 57996, now seen corresponding path program 1 times [2019-10-22 08:54:57,830 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:54:57,830 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068849390] [2019-10-22 08:54:57,830 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:57,830 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:57,831 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:54:57,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:57,882 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 08:54:57,882 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068849390] [2019-10-22 08:54:57,883 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:54:57,883 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-10-22 08:54:57,883 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491437255] [2019-10-22 08:54:57,887 INFO L808 eck$LassoCheckResult]: loop already infeasible [2019-10-22 08:54:57,888 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:54:57,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 08:54:57,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 08:54:57,893 INFO L87 Difference]: Start difference. First operand 12 states and 18 transitions. cyclomatic complexity: 8 Second operand 3 states. [2019-10-22 08:54:57,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:54:57,922 INFO L93 Difference]: Finished difference Result 14 states and 20 transitions. [2019-10-22 08:54:57,924 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 08:54:57,925 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 14 states and 20 transitions. [2019-10-22 08:54:57,926 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2019-10-22 08:54:57,926 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 14 states to 14 states and 20 transitions. [2019-10-22 08:54:57,926 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2019-10-22 08:54:57,927 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2019-10-22 08:54:57,927 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 20 transitions. [2019-10-22 08:54:57,927 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-10-22 08:54:57,927 INFO L688 BuchiCegarLoop]: Abstraction has 14 states and 20 transitions. [2019-10-22 08:54:57,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states and 20 transitions. [2019-10-22 08:54:57,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2019-10-22 08:54:57,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2019-10-22 08:54:57,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 20 transitions. [2019-10-22 08:54:57,929 INFO L711 BuchiCegarLoop]: Abstraction has 14 states and 20 transitions. [2019-10-22 08:54:57,929 INFO L591 BuchiCegarLoop]: Abstraction has 14 states and 20 transitions. [2019-10-22 08:54:57,929 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2019-10-22 08:54:57,929 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 14 states and 20 transitions. [2019-10-22 08:54:57,932 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2019-10-22 08:54:57,933 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-10-22 08:54:57,933 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-10-22 08:54:57,933 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2019-10-22 08:54:57,934 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-10-22 08:54:57,934 INFO L791 eck$LassoCheckResult]: Stem: 115#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0;havoc main_~i~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0; 116#L18-2 assume !!(0 != main_~i~0); 111#L10 assume !(main_~i~0 < 0);main_~i~0 := main_~i~0 - 2; 112#L18 [2019-10-22 08:54:57,934 INFO L793 eck$LassoCheckResult]: Loop: 112#L18 assume !(main_~i~0 > 0); 122#L18-2 assume !!(0 != main_~i~0); 124#L10 assume !(main_~i~0 < 0);main_~i~0 := main_~i~0 - 2; 112#L18 [2019-10-22 08:54:57,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:54:57,934 INFO L82 PathProgramCache]: Analyzing trace with hash 31088, now seen corresponding path program 2 times [2019-10-22 08:54:57,935 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:54:57,935 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6577797] [2019-10-22 08:54:57,935 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:57,935 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:57,935 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:54:57,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:54:57,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:54:57,952 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:54:57,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:54:57,955 INFO L82 PathProgramCache]: Analyzing trace with hash 59918, now seen corresponding path program 1 times [2019-10-22 08:54:57,955 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:54:57,955 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250076530] [2019-10-22 08:54:57,955 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:57,955 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:57,956 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:54:57,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:57,988 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 08:54:57,989 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250076530] [2019-10-22 08:54:57,989 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:54:57,989 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-22 08:54:57,989 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971364694] [2019-10-22 08:54:57,989 INFO L808 eck$LassoCheckResult]: loop already infeasible [2019-10-22 08:54:57,990 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:54:57,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-22 08:54:57,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-22 08:54:57,990 INFO L87 Difference]: Start difference. First operand 14 states and 20 transitions. cyclomatic complexity: 8 Second operand 4 states. [2019-10-22 08:54:58,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:54:58,028 INFO L93 Difference]: Finished difference Result 16 states and 22 transitions. [2019-10-22 08:54:58,028 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-22 08:54:58,029 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 16 states and 22 transitions. [2019-10-22 08:54:58,029 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2019-10-22 08:54:58,030 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 16 states to 16 states and 22 transitions. [2019-10-22 08:54:58,030 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 13 [2019-10-22 08:54:58,030 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 13 [2019-10-22 08:54:58,030 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 22 transitions. [2019-10-22 08:54:58,030 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-10-22 08:54:58,030 INFO L688 BuchiCegarLoop]: Abstraction has 16 states and 22 transitions. [2019-10-22 08:54:58,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states and 22 transitions. [2019-10-22 08:54:58,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 14. [2019-10-22 08:54:58,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2019-10-22 08:54:58,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 20 transitions. [2019-10-22 08:54:58,034 INFO L711 BuchiCegarLoop]: Abstraction has 14 states and 20 transitions. [2019-10-22 08:54:58,034 INFO L591 BuchiCegarLoop]: Abstraction has 14 states and 20 transitions. [2019-10-22 08:54:58,034 INFO L424 BuchiCegarLoop]: ======== Iteration 4============ [2019-10-22 08:54:58,034 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 14 states and 20 transitions. [2019-10-22 08:54:58,034 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2019-10-22 08:54:58,035 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-10-22 08:54:58,035 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-10-22 08:54:58,035 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2019-10-22 08:54:58,035 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1] [2019-10-22 08:54:58,035 INFO L791 eck$LassoCheckResult]: Stem: 152#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0;havoc main_~i~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0; 153#L18-2 assume !!(0 != main_~i~0); 148#L10 assume !(main_~i~0 < 0);main_~i~0 := main_~i~0 - 2; 149#L18 [2019-10-22 08:54:58,035 INFO L793 eck$LassoCheckResult]: Loop: 149#L18 assume main_~i~0 > 0;main_~i~0 := -1 * main_~i~0; 154#L18-2 assume !!(0 != main_~i~0); 155#L10 assume main_~i~0 < 0;main_~i~0 := 2 + main_~i~0; 157#L12 assume !(main_~i~0 < 0); 159#L18-2 assume !!(0 != main_~i~0); 161#L10 assume !(main_~i~0 < 0);main_~i~0 := main_~i~0 - 2; 149#L18 [2019-10-22 08:54:58,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:54:58,036 INFO L82 PathProgramCache]: Analyzing trace with hash 31088, now seen corresponding path program 3 times [2019-10-22 08:54:58,036 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:54:58,036 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446755309] [2019-10-22 08:54:58,036 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:58,036 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:58,037 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:54:58,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:54:58,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:54:58,043 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:54:58,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:54:58,044 INFO L82 PathProgramCache]: Analyzing trace with hash 1727393992, now seen corresponding path program 1 times [2019-10-22 08:54:58,044 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:54:58,044 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101619949] [2019-10-22 08:54:58,044 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:58,044 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:58,044 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:54:58,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:54:58,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:54:58,052 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:54:58,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:54:58,053 INFO L82 PathProgramCache]: Analyzing trace with hash 684415735, now seen corresponding path program 1 times [2019-10-22 08:54:58,053 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:54:58,053 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123864734] [2019-10-22 08:54:58,053 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:58,053 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:58,053 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:54:58,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:54:58,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:54:58,063 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:54:58,101 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 08:54:58,101 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 08:54:58,101 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 08:54:58,101 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 08:54:58,101 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2019-10-22 08:54:58,101 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:54:58,102 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 08:54:58,102 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 08:54:58,102 INFO L131 ssoRankerPreferences]: Filename of dumped script: AlternKonv.c_Iteration4_Loop [2019-10-22 08:54:58,102 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 08:54:58,102 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 08:54:58,103 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 08:54:58,106 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 08:54:58,109 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 08:54:58,181 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 08:54:58,181 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_4c685f07-d836-416b-96c3-9d16aa71ed6c/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 08:54:58,190 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 08:54:58,190 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-10-22 08:54:58,195 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 08:54:58,195 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_3=0} Honda state: {v_rep~unnamed0~0~false_3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_4c685f07-d836-416b-96c3-9d16aa71ed6c/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 08:54:58,203 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 08:54:58,204 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 08:54:58,208 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 08:54:58,208 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_3=1} Honda state: {v_rep~unnamed0~0~true_3=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_4c685f07-d836-416b-96c3-9d16aa71ed6c/bin/uautomizer/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-10-22 08:54:58,216 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 08:54:58,216 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 No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_4c685f07-d836-416b-96c3-9d16aa71ed6c/bin/uautomizer/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-10-22 08:54:58,229 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-10-22 08:54:58,229 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:54:58,239 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-10-22 08:54:58,241 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 08:54:58,241 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 08:54:58,242 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 08:54:58,243 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 08:54:58,243 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2019-10-22 08:54:58,243 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:54:58,243 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 08:54:58,243 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 08:54:58,243 INFO L131 ssoRankerPreferences]: Filename of dumped script: AlternKonv.c_Iteration4_Loop [2019-10-22 08:54:58,245 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 08:54:58,245 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 08:54:58,246 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 08:54:58,252 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 08:54:58,262 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 08:54:58,329 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 08:54:58,329 INFO L489 LassoAnalysis]: Using template 'affine'. [2019-10-22 08:54:58,330 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 08:54:58,331 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 08:54:58,331 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 08:54:58,331 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 08:54:58,332 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 08:54:58,333 INFO L400 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-10-22 08:54:58,336 INFO L401 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-10-22 08:54:58,340 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-10-22 08:54:58,344 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 08:54:58,345 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 08:54:58,346 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-10-22 08:54:58,346 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 08:54:58,346 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 08:54:58,347 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 08:54:58,347 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-10-22 08:54:58,349 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-10-22 08:54:58,353 INFO L419 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-10-22 08:54:58,359 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2019-10-22 08:54:58,366 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2019-10-22 08:54:58,368 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-10-22 08:54:58,369 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-10-22 08:54:58,369 INFO L510 LassoAnalysis]: Proved termination. [2019-10-22 08:54:58,369 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2019-10-22 08:54:58,370 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-10-22 08:54:58,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:54:58,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:58,393 INFO L256 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-22 08:54:58,393 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:54:58,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:58,400 INFO L256 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-22 08:54:58,401 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:54:58,424 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 08:54:58,424 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 08:54:58,424 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 14 states and 20 transitions. cyclomatic complexity: 8 Second operand 4 states. [2019-10-22 08:54:58,443 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 14 states and 20 transitions. cyclomatic complexity: 8. Second operand 4 states. Result 25 states and 35 transitions. Complement of second has 5 states. [2019-10-22 08:54:58,444 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-10-22 08:54:58,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-10-22 08:54:58,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 11 transitions. [2019-10-22 08:54:58,444 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 11 transitions. Stem has 3 letters. Loop has 6 letters. [2019-10-22 08:54:58,445 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:54:58,445 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2019-10-22 08:54:58,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:54:58,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:58,470 INFO L256 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-22 08:54:58,471 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:54:58,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:58,477 INFO L256 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-22 08:54:58,477 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:54:58,510 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 08:54:58,510 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 3 loop predicates [2019-10-22 08:54:58,510 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 14 states and 20 transitions. cyclomatic complexity: 8 Second operand 4 states. [2019-10-22 08:54:58,573 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 14 states and 20 transitions. cyclomatic complexity: 8. Second operand 4 states. Result 43 states and 63 transitions. Complement of second has 9 states. [2019-10-22 08:54:58,574 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2019-10-22 08:54:58,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-10-22 08:54:58,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 21 transitions. [2019-10-22 08:54:58,575 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 3 letters. Loop has 6 letters. [2019-10-22 08:54:58,575 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:54:58,575 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 9 letters. Loop has 6 letters. [2019-10-22 08:54:58,575 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:54:58,576 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 3 letters. Loop has 12 letters. [2019-10-22 08:54:58,576 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:54:58,576 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 43 states and 63 transitions. [2019-10-22 08:54:58,578 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 20 [2019-10-22 08:54:58,579 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 43 states to 41 states and 60 transitions. [2019-10-22 08:54:58,579 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 26 [2019-10-22 08:54:58,580 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 28 [2019-10-22 08:54:58,580 INFO L73 IsDeterministic]: Start isDeterministic. Operand 41 states and 60 transitions. [2019-10-22 08:54:58,580 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-10-22 08:54:58,580 INFO L688 BuchiCegarLoop]: Abstraction has 41 states and 60 transitions. [2019-10-22 08:54:58,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states and 60 transitions. [2019-10-22 08:54:58,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 36. [2019-10-22 08:54:58,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2019-10-22 08:54:58,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 55 transitions. [2019-10-22 08:54:58,585 INFO L711 BuchiCegarLoop]: Abstraction has 36 states and 55 transitions. [2019-10-22 08:54:58,585 INFO L591 BuchiCegarLoop]: Abstraction has 36 states and 55 transitions. [2019-10-22 08:54:58,585 INFO L424 BuchiCegarLoop]: ======== Iteration 5============ [2019-10-22 08:54:58,585 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 36 states and 55 transitions. [2019-10-22 08:54:58,586 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 18 [2019-10-22 08:54:58,586 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-10-22 08:54:58,586 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-10-22 08:54:58,587 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2019-10-22 08:54:58,587 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2019-10-22 08:54:58,587 INFO L791 eck$LassoCheckResult]: Stem: 323#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0;havoc main_~i~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0; 324#L18-2 assume !!(0 != main_~i~0); 321#L10 assume main_~i~0 < 0;main_~i~0 := 2 + main_~i~0; 322#L12 assume main_~i~0 < 0; 328#L13 [2019-10-22 08:54:58,587 INFO L793 eck$LassoCheckResult]: Loop: 328#L13 assume !(main_~i~0 <= -2147483648);main_~i~0 := -1 * main_~i~0; 334#L18-2 assume !!(0 != main_~i~0); 354#L10 assume main_~i~0 < 0;main_~i~0 := 2 + main_~i~0; 352#L12 assume main_~i~0 < 0; 328#L13 [2019-10-22 08:54:58,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:54:58,588 INFO L82 PathProgramCache]: Analyzing trace with hash 963341, now seen corresponding path program 1 times [2019-10-22 08:54:58,588 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:54:58,588 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825473143] [2019-10-22 08:54:58,588 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:58,588 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:58,589 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:54:58,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:54:58,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:54:58,597 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:54:58,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:54:58,597 INFO L82 PathProgramCache]: Analyzing trace with hash 1559161, now seen corresponding path program 1 times [2019-10-22 08:54:58,597 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:54:58,598 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733969820] [2019-10-22 08:54:58,598 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:58,598 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:58,598 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:54:58,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:54:58,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:54:58,606 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:54:58,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:54:58,607 INFO L82 PathProgramCache]: Analyzing trace with hash 608049029, now seen corresponding path program 1 times [2019-10-22 08:54:58,607 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:54:58,607 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167367981] [2019-10-22 08:54:58,608 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:58,608 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:58,608 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:54:58,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:58,628 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 08:54:58,628 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167367981] [2019-10-22 08:54:58,628 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 08:54:58,629 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-22 08:54:58,629 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996406925] [2019-10-22 08:54:58,670 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 08:54:58,670 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 08:54:58,670 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 08:54:58,670 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 08:54:58,670 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2019-10-22 08:54:58,671 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:54:58,671 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 08:54:58,671 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 08:54:58,671 INFO L131 ssoRankerPreferences]: Filename of dumped script: AlternKonv.c_Iteration5_Loop [2019-10-22 08:54:58,671 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 08:54:58,671 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 08:54:58,672 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 08:54:58,679 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 08:54:58,682 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 08:54:58,732 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 08:54:58,732 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_4c685f07-d836-416b-96c3-9d16aa71ed6c/bin/uautomizer/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:54:58,740 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 08:54:58,740 INFO L160 nArgumentSynthesizer]: Using integer mode. [2019-10-22 08:54:58,745 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 08:54:58,745 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_5=1} Honda state: {v_rep~unnamed0~0~true_5=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_4c685f07-d836-416b-96c3-9d16aa71ed6c/bin/uautomizer/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-10-22 08:54:58,754 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 08:54:58,754 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:54:58,759 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2019-10-22 08:54:58,759 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_5=0} Honda state: {v_rep~unnamed0~0~false_5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_4c685f07-d836-416b-96c3-9d16aa71ed6c/bin/uautomizer/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-10-22 08:54:58,768 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 08:54:58,769 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 /tmp/vcloud-vcloud-master/worker/working_dir_4c685f07-d836-416b-96c3-9d16aa71ed6c/bin/uautomizer/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-10-22 08:54:58,781 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-10-22 08:54:58,781 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:54:58,858 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-10-22 08:54:58,867 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 08:54:58,868 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 08:54:58,868 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 08:54:58,868 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 08:54:58,868 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2019-10-22 08:54:58,868 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:54:58,868 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 08:54:58,868 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 08:54:58,869 INFO L131 ssoRankerPreferences]: Filename of dumped script: AlternKonv.c_Iteration5_Loop [2019-10-22 08:54:58,869 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 08:54:58,869 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 08:54:58,870 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 08:54:58,880 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 08:54:58,884 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 08:54:58,928 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 08:54:58,929 INFO L489 LassoAnalysis]: Using template 'affine'. [2019-10-22 08:54:58,929 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 08:54:58,930 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 08:54:58,930 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 08:54:58,930 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 08:54:58,930 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 08:54:58,932 INFO L400 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-10-22 08:54:58,932 INFO L401 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-10-22 08:54:58,942 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-10-22 08:54:58,944 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 08:54:58,945 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 08:54:58,945 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 08:54:58,945 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 08:54:58,945 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 08:54:58,947 INFO L400 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2019-10-22 08:54:58,954 INFO L401 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2019-10-22 08:54:58,957 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2019-10-22 08:54:58,957 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 08:54:58,960 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 08:54:58,960 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-10-22 08:54:58,961 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 08:54:58,961 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 08:54:58,961 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 08:54:58,961 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-10-22 08:54:58,962 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-10-22 08:54:58,965 INFO L419 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-10-22 08:54:58,972 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2019-10-22 08:54:58,979 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2019-10-22 08:54:58,979 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-10-22 08:54:58,980 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-10-22 08:54:58,980 INFO L510 LassoAnalysis]: Proved termination. [2019-10-22 08:54:58,980 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2019-10-22 08:54:58,980 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-10-22 08:54:58,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:54:59,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:59,002 INFO L256 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-22 08:54:59,002 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:54:59,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:59,014 WARN L254 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 5 conjunts are in the unsatisfiable core [2019-10-22 08:54:59,015 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:54:59,043 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 08:54:59,044 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 08:54:59,044 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 36 states and 55 transitions. cyclomatic complexity: 24 Second operand 4 states. [2019-10-22 08:54:59,165 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 36 states and 55 transitions. cyclomatic complexity: 24. Second operand 4 states. Result 147 states and 212 transitions. Complement of second has 11 states. [2019-10-22 08:54:59,168 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 1 stem states 4 non-accepting loop states 1 accepting loop states [2019-10-22 08:54:59,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-10-22 08:54:59,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 26 transitions. [2019-10-22 08:54:59,169 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 26 transitions. Stem has 4 letters. Loop has 4 letters. [2019-10-22 08:54:59,169 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:54:59,169 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 26 transitions. Stem has 8 letters. Loop has 4 letters. [2019-10-22 08:54:59,170 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:54:59,170 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 26 transitions. Stem has 4 letters. Loop has 8 letters. [2019-10-22 08:54:59,170 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:54:59,170 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 147 states and 212 transitions. [2019-10-22 08:54:59,172 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 23 [2019-10-22 08:54:59,173 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 147 states to 121 states and 178 transitions. [2019-10-22 08:54:59,173 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 41 [2019-10-22 08:54:59,174 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 53 [2019-10-22 08:54:59,174 INFO L73 IsDeterministic]: Start isDeterministic. Operand 121 states and 178 transitions. [2019-10-22 08:54:59,174 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-10-22 08:54:59,174 INFO L688 BuchiCegarLoop]: Abstraction has 121 states and 178 transitions. [2019-10-22 08:54:59,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states and 178 transitions. [2019-10-22 08:54:59,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 101. [2019-10-22 08:54:59,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2019-10-22 08:54:59,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 153 transitions. [2019-10-22 08:54:59,182 INFO L711 BuchiCegarLoop]: Abstraction has 101 states and 153 transitions. [2019-10-22 08:54:59,182 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-22 08:54:59,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-22 08:54:59,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-22 08:54:59,183 INFO L87 Difference]: Start difference. First operand 101 states and 153 transitions. Second operand 4 states. [2019-10-22 08:54:59,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 08:54:59,220 INFO L93 Difference]: Finished difference Result 80 states and 105 transitions. [2019-10-22 08:54:59,221 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-22 08:54:59,222 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 80 states and 105 transitions. [2019-10-22 08:54:59,223 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 31 [2019-10-22 08:54:59,224 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 80 states to 72 states and 97 transitions. [2019-10-22 08:54:59,224 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 48 [2019-10-22 08:54:59,225 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 48 [2019-10-22 08:54:59,225 INFO L73 IsDeterministic]: Start isDeterministic. Operand 72 states and 97 transitions. [2019-10-22 08:54:59,225 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-10-22 08:54:59,225 INFO L688 BuchiCegarLoop]: Abstraction has 72 states and 97 transitions. [2019-10-22 08:54:59,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states and 97 transitions. [2019-10-22 08:54:59,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 35. [2019-10-22 08:54:59,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2019-10-22 08:54:59,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 50 transitions. [2019-10-22 08:54:59,236 INFO L711 BuchiCegarLoop]: Abstraction has 35 states and 50 transitions. [2019-10-22 08:54:59,236 INFO L591 BuchiCegarLoop]: Abstraction has 35 states and 50 transitions. [2019-10-22 08:54:59,236 INFO L424 BuchiCegarLoop]: ======== Iteration 6============ [2019-10-22 08:54:59,237 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 35 states and 50 transitions. [2019-10-22 08:54:59,237 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 16 [2019-10-22 08:54:59,237 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-10-22 08:54:59,237 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-10-22 08:54:59,238 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2019-10-22 08:54:59,238 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-10-22 08:54:59,238 INFO L791 eck$LassoCheckResult]: Stem: 746#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0;havoc main_~i~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0; 747#L18-2 assume !!(0 != main_~i~0); 766#L10 assume !(main_~i~0 < 0);main_~i~0 := main_~i~0 - 2; 768#L18 assume main_~i~0 > 0;main_~i~0 := -1 * main_~i~0; 753#L18-2 [2019-10-22 08:54:59,238 INFO L793 eck$LassoCheckResult]: Loop: 753#L18-2 assume !!(0 != main_~i~0); 773#L10 assume main_~i~0 < 0;main_~i~0 := 2 + main_~i~0; 751#L12 assume !(main_~i~0 < 0); 753#L18-2 [2019-10-22 08:54:59,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:54:59,238 INFO L82 PathProgramCache]: Analyzing trace with hash 963757, now seen corresponding path program 1 times [2019-10-22 08:54:59,239 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:54:59,239 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972946492] [2019-10-22 08:54:59,239 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:59,239 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:59,239 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:54:59,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:54:59,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:54:59,247 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:54:59,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:54:59,248 INFO L82 PathProgramCache]: Analyzing trace with hash 39827, now seen corresponding path program 2 times [2019-10-22 08:54:59,248 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:54:59,248 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677489043] [2019-10-22 08:54:59,248 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:59,248 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:59,249 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:54:59,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:54:59,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:54:59,254 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:54:59,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:54:59,255 INFO L82 PathProgramCache]: Analyzing trace with hash -1353476249, now seen corresponding path program 2 times [2019-10-22 08:54:59,255 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:54:59,255 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001439174] [2019-10-22 08:54:59,255 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:59,255 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:59,256 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:54:59,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:54:59,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:54:59,264 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:54:59,299 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 08:54:59,299 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 08:54:59,299 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 08:54:59,299 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 08:54:59,300 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2019-10-22 08:54:59,300 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:54:59,300 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 08:54:59,300 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 08:54:59,300 INFO L131 ssoRankerPreferences]: Filename of dumped script: AlternKonv.c_Iteration6_Loop [2019-10-22 08:54:59,300 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 08:54:59,300 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 08:54:59,302 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 08:54:59,311 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 08:54:59,315 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 08:54:59,365 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 08:54:59,365 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_4c685f07-d836-416b-96c3-9d16aa71ed6c/bin/uautomizer/z3 Starting monitored process 14 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 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:54:59,375 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2019-10-22 08:54:59,376 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_4c685f07-d836-416b-96c3-9d16aa71ed6c/bin/uautomizer/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2019-10-22 08:54:59,392 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2019-10-22 08:54:59,392 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:54:59,400 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2019-10-22 08:54:59,403 INFO L210 LassoAnalysis]: Preferences: [2019-10-22 08:54:59,403 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2019-10-22 08:54:59,403 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2019-10-22 08:54:59,403 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2019-10-22 08:54:59,403 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2019-10-22 08:54:59,403 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-10-22 08:54:59,404 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2019-10-22 08:54:59,404 INFO L130 ssoRankerPreferences]: Path of dumped script: [2019-10-22 08:54:59,404 INFO L131 ssoRankerPreferences]: Filename of dumped script: AlternKonv.c_Iteration6_Loop [2019-10-22 08:54:59,404 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2019-10-22 08:54:59,404 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2019-10-22 08:54:59,405 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 08:54:59,417 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 08:54:59,420 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 08:54:59,455 INFO L292 LassoAnalysis]: Preprocessing complete. [2019-10-22 08:54:59,455 INFO L489 LassoAnalysis]: Using template 'affine'. [2019-10-22 08:54:59,456 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 08:54:59,457 INFO L337 nArgumentSynthesizer]: Template has degree 0. [2019-10-22 08:54:59,457 INFO L350 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2019-10-22 08:54:59,457 INFO L202 nArgumentSynthesizer]: 1 stem disjuncts [2019-10-22 08:54:59,457 INFO L203 nArgumentSynthesizer]: 1 loop disjuncts [2019-10-22 08:54:59,457 INFO L204 nArgumentSynthesizer]: 2 template conjuncts. [2019-10-22 08:54:59,458 INFO L400 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2019-10-22 08:54:59,458 INFO L401 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2019-10-22 08:54:59,461 INFO L419 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2019-10-22 08:54:59,463 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2019-10-22 08:54:59,463 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2019-10-22 08:54:59,464 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2019-10-22 08:54:59,464 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2019-10-22 08:54:59,464 INFO L510 LassoAnalysis]: Proved termination. [2019-10-22 08:54:59,464 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = -1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2019-10-22 08:54:59,465 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2019-10-22 08:54:59,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:54:59,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:59,482 INFO L256 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-22 08:54:59,483 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:54:59,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 08:54:59,487 WARN L254 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-22 08:54:59,487 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 08:54:59,498 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 08:54:59,498 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2019-10-22 08:54:59,499 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 35 states and 50 transitions. cyclomatic complexity: 19 Second operand 4 states. [2019-10-22 08:54:59,515 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 35 states and 50 transitions. cyclomatic complexity: 19. Second operand 4 states. Result 73 states and 96 transitions. Complement of second has 5 states. [2019-10-22 08:54:59,516 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2019-10-22 08:54:59,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2019-10-22 08:54:59,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 14 transitions. [2019-10-22 08:54:59,516 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 14 transitions. Stem has 4 letters. Loop has 3 letters. [2019-10-22 08:54:59,516 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:54:59,516 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 14 transitions. Stem has 7 letters. Loop has 3 letters. [2019-10-22 08:54:59,517 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:54:59,517 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 14 transitions. Stem has 4 letters. Loop has 6 letters. [2019-10-22 08:54:59,517 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2019-10-22 08:54:59,517 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 73 states and 96 transitions. [2019-10-22 08:54:59,519 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 25 [2019-10-22 08:54:59,519 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 73 states to 65 states and 88 transitions. [2019-10-22 08:54:59,520 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 34 [2019-10-22 08:54:59,520 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 37 [2019-10-22 08:54:59,520 INFO L73 IsDeterministic]: Start isDeterministic. Operand 65 states and 88 transitions. [2019-10-22 08:54:59,520 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2019-10-22 08:54:59,520 INFO L688 BuchiCegarLoop]: Abstraction has 65 states and 88 transitions. [2019-10-22 08:54:59,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states and 88 transitions. [2019-10-22 08:54:59,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 57. [2019-10-22 08:54:59,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2019-10-22 08:54:59,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 80 transitions. [2019-10-22 08:54:59,524 INFO L711 BuchiCegarLoop]: Abstraction has 57 states and 80 transitions. [2019-10-22 08:54:59,524 INFO L591 BuchiCegarLoop]: Abstraction has 57 states and 80 transitions. [2019-10-22 08:54:59,525 INFO L424 BuchiCegarLoop]: ======== Iteration 7============ [2019-10-22 08:54:59,525 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 57 states and 80 transitions. [2019-10-22 08:54:59,525 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 25 [2019-10-22 08:54:59,526 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-10-22 08:54:59,526 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-10-22 08:54:59,526 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2019-10-22 08:54:59,526 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1] [2019-10-22 08:54:59,526 INFO L791 eck$LassoCheckResult]: Stem: 896#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~i~0;havoc main_~i~0;main_~i~0 := main_#t~nondet0;havoc main_#t~nondet0; 897#L18-2 assume !!(0 != main_~i~0); 927#L10 assume !(main_~i~0 < 0);main_~i~0 := main_~i~0 - 2; 925#L18 assume !(main_~i~0 > 0); 908#L18-2 [2019-10-22 08:54:59,526 INFO L793 eck$LassoCheckResult]: Loop: 908#L18-2 assume !!(0 != main_~i~0); 948#L10 assume main_~i~0 < 0;main_~i~0 := 2 + main_~i~0; 936#L12 assume !(main_~i~0 < 0); 947#L18-2 assume !!(0 != main_~i~0); 935#L10 assume !(main_~i~0 < 0);main_~i~0 := main_~i~0 - 2; 893#L18 assume !(main_~i~0 > 0); 908#L18-2 [2019-10-22 08:54:59,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:54:59,527 INFO L82 PathProgramCache]: Analyzing trace with hash 963759, now seen corresponding path program 1 times [2019-10-22 08:54:59,527 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:54:59,527 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135047679] [2019-10-22 08:54:59,527 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:59,527 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:59,528 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:54:59,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:54:59,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:54:59,534 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:54:59,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:54:59,534 INFO L82 PathProgramCache]: Analyzing trace with hash 1186496604, now seen corresponding path program 1 times [2019-10-22 08:54:59,534 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:54:59,535 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462685747] [2019-10-22 08:54:59,535 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:59,535 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:59,535 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:54:59,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:54:59,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:54:59,541 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:54:59,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 08:54:59,541 INFO L82 PathProgramCache]: Analyzing trace with hash 1517058698, now seen corresponding path program 1 times [2019-10-22 08:54:59,542 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 08:54:59,542 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142592108] [2019-10-22 08:54:59,542 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:59,542 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 08:54:59,542 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 08:54:59,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:54:59,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 08:54:59,551 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 08:54:59,622 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 22.10 08:54:59 BoogieIcfgContainer [2019-10-22 08:54:59,627 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-10-22 08:54:59,627 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 08:54:59,627 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 08:54:59,627 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 08:54:59,628 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 08:54:56" (3/4) ... [2019-10-22 08:54:59,631 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2019-10-22 08:54:59,675 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_4c685f07-d836-416b-96c3-9d16aa71ed6c/bin/uautomizer/witness.graphml [2019-10-22 08:54:59,675 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 08:54:59,677 INFO L168 Benchmark]: Toolchain (without parser) took 3631.34 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 127.9 MB). Free memory was 951.2 MB in the beginning and 786.5 MB in the end (delta: 164.6 MB). Peak memory consumption was 292.6 MB. Max. memory is 11.5 GB. [2019-10-22 08:54:59,678 INFO L168 Benchmark]: CDTParser took 0.18 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 08:54:59,678 INFO L168 Benchmark]: CACSL2BoogieTranslator took 330.18 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 127.9 MB). Free memory was 951.2 MB in the beginning and 1.1 GB in the end (delta: -167.0 MB). Peak memory consumption was 24.1 MB. Max. memory is 11.5 GB. [2019-10-22 08:54:59,679 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.02 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 08:54:59,679 INFO L168 Benchmark]: Boogie Preprocessor took 21.38 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 08:54:59,679 INFO L168 Benchmark]: RCFGBuilder took 236.44 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 17.4 MB). Peak memory consumption was 17.4 MB. Max. memory is 11.5 GB. [2019-10-22 08:54:59,680 INFO L168 Benchmark]: BuchiAutomizer took 2957.24 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 786.5 MB in the end (delta: 314.3 MB). Peak memory consumption was 314.3 MB. Max. memory is 11.5 GB. [2019-10-22 08:54:59,680 INFO L168 Benchmark]: Witness Printer took 48.34 ms. Allocated memory is still 1.2 GB. Free memory is still 786.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 08:54:59,683 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 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 330.18 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 127.9 MB). Free memory was 951.2 MB in the beginning and 1.1 GB in the end (delta: -167.0 MB). Peak memory consumption was 24.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 34.02 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 21.38 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 236.44 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 17.4 MB). Peak memory consumption was 17.4 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 2957.24 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 786.5 MB in the end (delta: 314.3 MB). Peak memory consumption was 314.3 MB. Max. memory is 11.5 GB. * Witness Printer took 48.34 ms. Allocated memory is still 1.2 GB. Free memory is still 786.5 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 7 terminating modules (3 trivial, 4 deterministic, 0 nondeterministic) and one nonterminating remainder module.One deterministic module has affine ranking function -1 * i and consists of 4 locations. One deterministic module has affine ranking function i and consists of 5 locations. One deterministic module has affine ranking function i and consists of 6 locations. One deterministic module has affine ranking function -1 * i and consists of 3 locations. 3 modules have a trivial ranking function, the largest among these consists of 4 locations. The remainder module has 57 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.8s and 7 iterations. TraceHistogramMax:2. Analysis of lassos took 1.8s. Construction of modules took 0.1s. Büchi inclusion checks took 0.5s. Highest rank in rank-based complementation 3. Minimization of det autom 0. Minimization of nondet autom 7. Automata minimization 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 74 StatesRemovedByMinimization, 6 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 57 states and ocurred in iteration 6. Nontrivial modules had stage [3, 1, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 2/2 HoareTripleCheckerStatistics: 61 SDtfs, 69 SDslu, 3 SDs, 0 SdLazy, 142 SolverSat, 33 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time LassoAnalysisResults: nont1 unkn0 SFLI2 SFLT3 conc0 concLT1 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital13 mio100 ax190 hnf98 lsp52 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq152 hnf94 smp93 dnf100 smp100 tf111 neg98 sie112 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 13ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 6 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 4 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.2s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 9]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {} State at position 1 is {org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@5c088f81=0, \result=0, i=-1} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 9]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L6] int i; [L7] i = __VERIFIER_nondet_int() [L9] COND TRUE i != 0 [L10] COND FALSE !(i < 0) [L17] i = i-2 [L18] COND FALSE !(i > 0) Loop: [L9] COND TRUE i != 0 [L10] COND TRUE i < 0 [L11] i = i+2 [L12] COND FALSE !(i < 0) [L9] COND TRUE i != 0 [L10] COND FALSE !(i < 0) [L17] i = i-2 [L18] COND FALSE !(i > 0) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...