./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/loops/while_infinite_loop_4.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_4bae7386-412a-4bfe-af15-6470e0a56eb0/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_4bae7386-412a-4bfe-af15-6470e0a56eb0/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_4bae7386-412a-4bfe-af15-6470e0a56eb0/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_4bae7386-412a-4bfe-af15-6470e0a56eb0/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/loops/while_infinite_loop_4.c -s /tmp/vcloud-vcloud-master/worker/run_dir_4bae7386-412a-4bfe-af15-6470e0a56eb0/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_4bae7386-412a-4bfe-af15-6470e0a56eb0/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ef9ee2b82a40720ec57dc1562759dd601b686b38 .................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-12-07 18:24:46,717 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 18:24:46,718 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 18:24:46,726 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 18:24:46,726 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 18:24:46,727 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 18:24:46,728 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 18:24:46,729 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 18:24:46,731 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 18:24:46,731 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 18:24:46,732 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 18:24:46,733 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 18:24:46,733 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 18:24:46,734 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 18:24:46,734 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 18:24:46,735 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 18:24:46,736 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 18:24:46,736 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 18:24:46,738 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 18:24:46,739 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 18:24:46,740 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 18:24:46,741 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 18:24:46,741 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 18:24:46,742 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 18:24:46,744 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 18:24:46,744 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 18:24:46,744 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 18:24:46,744 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 18:24:46,745 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 18:24:46,745 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 18:24:46,745 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 18:24:46,746 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 18:24:46,746 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 18:24:46,747 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 18:24:46,747 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 18:24:46,748 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 18:24:46,748 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 18:24:46,748 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 18:24:46,748 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 18:24:46,749 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 18:24:46,749 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 18:24:46,750 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_4bae7386-412a-4bfe-af15-6470e0a56eb0/bin/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf [2019-12-07 18:24:46,760 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 18:24:46,760 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 18:24:46,761 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 18:24:46,761 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 18:24:46,761 INFO L138 SettingsManager]: * Use SBE=true [2019-12-07 18:24:46,761 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-12-07 18:24:46,761 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-12-07 18:24:46,762 INFO L138 SettingsManager]: * Use old map elimination=false [2019-12-07 18:24:46,762 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-12-07 18:24:46,762 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-12-07 18:24:46,762 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-12-07 18:24:46,762 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 18:24:46,762 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 18:24:46,762 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-12-07 18:24:46,762 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 18:24:46,762 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 18:24:46,763 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 18:24:46,763 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-12-07 18:24:46,763 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-12-07 18:24:46,763 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-12-07 18:24:46,763 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 18:24:46,763 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 18:24:46,763 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-12-07 18:24:46,764 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 18:24:46,764 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-12-07 18:24:46,764 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 18:24:46,764 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 18:24:46,764 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-12-07 18:24:46,764 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 18:24:46,764 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-12-07 18:24:46,765 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 18:24:46,765 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-12-07 18:24:46,765 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-12-07 18:24:46,765 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_4bae7386-412a-4bfe-af15-6470e0a56eb0/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ef9ee2b82a40720ec57dc1562759dd601b686b38 [2019-12-07 18:24:46,866 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 18:24:46,876 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 18:24:46,879 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 18:24:46,880 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 18:24:46,880 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 18:24:46,881 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_4bae7386-412a-4bfe-af15-6470e0a56eb0/bin/uautomizer/../../sv-benchmarks/c/loops/while_infinite_loop_4.c [2019-12-07 18:24:46,919 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_4bae7386-412a-4bfe-af15-6470e0a56eb0/bin/uautomizer/data/6ceb6ea92/02334c48450340a299baf444fcf2ed9d/FLAG20f33430d [2019-12-07 18:24:47,352 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 18:24:47,352 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_4bae7386-412a-4bfe-af15-6470e0a56eb0/sv-benchmarks/c/loops/while_infinite_loop_4.c [2019-12-07 18:24:47,356 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_4bae7386-412a-4bfe-af15-6470e0a56eb0/bin/uautomizer/data/6ceb6ea92/02334c48450340a299baf444fcf2ed9d/FLAG20f33430d [2019-12-07 18:24:47,365 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_4bae7386-412a-4bfe-af15-6470e0a56eb0/bin/uautomizer/data/6ceb6ea92/02334c48450340a299baf444fcf2ed9d [2019-12-07 18:24:47,367 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 18:24:47,368 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 18:24:47,368 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 18:24:47,368 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 18:24:47,371 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 18:24:47,371 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 06:24:47" (1/1) ... [2019-12-07 18:24:47,373 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f12ee6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:24:47, skipping insertion in model container [2019-12-07 18:24:47,373 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 06:24:47" (1/1) ... [2019-12-07 18:24:47,378 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 18:24:47,387 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 18:24:47,482 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 18:24:47,486 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 18:24:47,526 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 18:24:47,536 INFO L208 MainTranslator]: Completed translation [2019-12-07 18:24:47,536 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:24:47 WrapperNode [2019-12-07 18:24:47,536 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 18:24:47,537 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 18:24:47,537 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 18:24:47,537 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 18:24:47,542 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:24:47" (1/1) ... [2019-12-07 18:24:47,546 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:24:47" (1/1) ... [2019-12-07 18:24:47,557 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 18:24:47,558 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 18:24:47,558 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 18:24:47,558 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 18:24:47,564 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:24:47" (1/1) ... [2019-12-07 18:24:47,564 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:24:47" (1/1) ... [2019-12-07 18:24:47,564 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:24:47" (1/1) ... [2019-12-07 18:24:47,564 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:24:47" (1/1) ... [2019-12-07 18:24:47,566 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:24:47" (1/1) ... [2019-12-07 18:24:47,569 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:24:47" (1/1) ... [2019-12-07 18:24:47,569 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:24:47" (1/1) ... [2019-12-07 18:24:47,570 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 18:24:47,570 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 18:24:47,571 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 18:24:47,571 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 18:24:47,571 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:24:47" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4bae7386-412a-4bfe-af15-6470e0a56eb0/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-12-07 18:24:47,612 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 18:24:47,612 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 18:24:47,696 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 18:24:47,696 INFO L287 CfgBuilder]: Removed 12 assume(true) statements. [2019-12-07 18:24:47,697 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 06:24:47 BoogieIcfgContainer [2019-12-07 18:24:47,697 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 18:24:47,697 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-12-07 18:24:47,697 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-12-07 18:24:47,699 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-12-07 18:24:47,700 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-12-07 18:24:47,700 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 07.12 06:24:47" (1/3) ... [2019-12-07 18:24:47,700 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@707aa727 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 07.12 06:24:47, skipping insertion in model container [2019-12-07 18:24:47,701 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-12-07 18:24:47,701 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 06:24:47" (2/3) ... [2019-12-07 18:24:47,701 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@707aa727 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 07.12 06:24:47, skipping insertion in model container [2019-12-07 18:24:47,701 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-12-07 18:24:47,701 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 06:24:47" (3/3) ... [2019-12-07 18:24:47,702 INFO L371 chiAutomizerObserver]: Analyzing ICFG while_infinite_loop_4.c [2019-12-07 18:24:47,731 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-12-07 18:24:47,731 INFO L357 BuchiCegarLoop]: Hoare is false [2019-12-07 18:24:47,731 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-12-07 18:24:47,731 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 18:24:47,731 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 18:24:47,731 INFO L361 BuchiCegarLoop]: Difference is false [2019-12-07 18:24:47,731 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 18:24:47,732 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-12-07 18:24:47,740 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 14 states. [2019-12-07 18:24:47,753 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2019-12-07 18:24:47,753 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 18:24:47,753 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 18:24:47,758 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2019-12-07 18:24:47,758 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2019-12-07 18:24:47,758 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-12-07 18:24:47,758 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 14 states. [2019-12-07 18:24:47,759 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2019-12-07 18:24:47,759 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 18:24:47,759 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 18:24:47,759 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2019-12-07 18:24:47,759 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2019-12-07 18:24:47,764 INFO L794 eck$LassoCheckResult]: Stem: 6#ULTIMATE.startENTRYtrue ~x~0 := 0; 4#L-1true havoc main_#res; 12#L4-2true [2019-12-07 18:24:47,764 INFO L796 eck$LassoCheckResult]: Loop: 12#L4-2true assume !false; 14#L14loopEntrytrue assume false; 10#L14-2true __VERIFIER_assert_#in~cond := (if 0 == ~x~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 16#L4true assume !(0 == __VERIFIER_assert_~cond); 12#L4-2true [2019-12-07 18:24:47,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:24:47,768 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2019-12-07 18:24:47,773 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:24:47,774 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347795425] [2019-12-07 18:24:47,774 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:24:47,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:24:47,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:24:47,837 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 18:24:47,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:24:47,838 INFO L82 PathProgramCache]: Analyzing trace with hash 1269327, now seen corresponding path program 1 times [2019-12-07 18:24:47,838 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:24:47,838 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884208932] [2019-12-07 18:24:47,838 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:24:47,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:47,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 18:24:47,855 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884208932] [2019-12-07 18:24:47,856 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 18:24:47,856 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 18:24:47,857 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038001510] [2019-12-07 18:24:47,860 INFO L811 eck$LassoCheckResult]: loop already infeasible [2019-12-07 18:24:47,861 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 18:24:47,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-12-07 18:24:47,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-12-07 18:24:47,872 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 2 states. [2019-12-07 18:24:47,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:24:47,876 INFO L93 Difference]: Finished difference Result 7 states and 7 transitions. [2019-12-07 18:24:47,876 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-12-07 18:24:47,878 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 7 states and 7 transitions. [2019-12-07 18:24:47,878 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-12-07 18:24:47,881 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 7 states to 6 states and 6 transitions. [2019-12-07 18:24:47,881 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2019-12-07 18:24:47,881 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2019-12-07 18:24:47,882 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 6 transitions. [2019-12-07 18:24:47,882 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-12-07 18:24:47,882 INFO L688 BuchiCegarLoop]: Abstraction has 6 states and 6 transitions. [2019-12-07 18:24:47,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states and 6 transitions. [2019-12-07 18:24:47,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 6. [2019-12-07 18:24:47,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2019-12-07 18:24:47,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 6 transitions. [2019-12-07 18:24:47,899 INFO L711 BuchiCegarLoop]: Abstraction has 6 states and 6 transitions. [2019-12-07 18:24:47,899 INFO L591 BuchiCegarLoop]: Abstraction has 6 states and 6 transitions. [2019-12-07 18:24:47,900 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-12-07 18:24:47,900 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6 states and 6 transitions. [2019-12-07 18:24:47,900 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-12-07 18:24:47,900 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-12-07 18:24:47,900 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-12-07 18:24:47,900 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2019-12-07 18:24:47,900 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2019-12-07 18:24:47,901 INFO L794 eck$LassoCheckResult]: Stem: 31#ULTIMATE.startENTRY ~x~0 := 0; 29#L-1 havoc main_#res; 30#L4-2 [2019-12-07 18:24:47,901 INFO L796 eck$LassoCheckResult]: Loop: 30#L4-2 assume !false; 34#L14loopEntry assume !false;~x~0 := 1; 32#L14-2 __VERIFIER_assert_#in~cond := (if 0 == ~x~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 33#L4 assume !(0 == __VERIFIER_assert_~cond); 30#L4-2 [2019-12-07 18:24:47,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:24:47,901 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 2 times [2019-12-07 18:24:47,901 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:24:47,901 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32386419] [2019-12-07 18:24:47,901 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:24:47,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:24:47,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 18:24:47,905 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-12-07 18:24:47,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 18:24:47,905 INFO L82 PathProgramCache]: Analyzing trace with hash 1271249, now seen corresponding path program 1 times [2019-12-07 18:24:47,905 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-12-07 18:24:47,905 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606460539] [2019-12-07 18:24:47,905 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 18:24:47,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 18:24:47,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 18:24:47,949 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606460539] [2019-12-07 18:24:47,949 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 18:24:47,949 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 18:24:47,949 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820829440] [2019-12-07 18:24:47,949 INFO L811 eck$LassoCheckResult]: loop already infeasible [2019-12-07 18:24:47,950 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-12-07 18:24:47,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 18:24:47,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-07 18:24:47,950 INFO L87 Difference]: Start difference. First operand 6 states and 6 transitions. cyclomatic complexity: 1 Second operand 4 states. [2019-12-07 18:24:47,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 18:24:47,963 INFO L93 Difference]: Finished difference Result 6 states and 5 transitions. [2019-12-07 18:24:47,963 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 18:24:47,964 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 6 states and 5 transitions. [2019-12-07 18:24:47,964 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-12-07 18:24:47,964 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 6 states to 0 states and 0 transitions. [2019-12-07 18:24:47,964 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2019-12-07 18:24:47,964 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2019-12-07 18:24:47,965 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2019-12-07 18:24:47,965 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-12-07 18:24:47,965 INFO L688 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 18:24:47,965 INFO L711 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 18:24:47,965 INFO L591 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 18:24:47,965 INFO L424 BuchiCegarLoop]: ======== Iteration 3============ [2019-12-07 18:24:47,965 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2019-12-07 18:24:47,965 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2019-12-07 18:24:47,965 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2019-12-07 18:24:47,969 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 07.12 06:24:47 BoogieIcfgContainer [2019-12-07 18:24:47,969 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-12-07 18:24:47,969 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 18:24:47,969 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 18:24:47,969 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 18:24:47,970 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 06:24:47" (3/4) ... [2019-12-07 18:24:47,972 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-12-07 18:24:47,972 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 18:24:47,973 INFO L168 Benchmark]: Toolchain (without parser) took 605.30 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 111.7 MB). Free memory was 939.3 MB in the beginning and 1.1 GB in the end (delta: -116.5 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 18:24:47,974 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 955.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 18:24:47,974 INFO L168 Benchmark]: CACSL2BoogieTranslator took 168.25 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 111.7 MB). Free memory was 939.3 MB in the beginning and 1.1 GB in the end (delta: -167.1 MB). Peak memory consumption was 23.3 MB. Max. memory is 11.5 GB. [2019-12-07 18:24:47,974 INFO L168 Benchmark]: Boogie Procedure Inliner took 20.65 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 18:24:47,975 INFO L168 Benchmark]: Boogie Preprocessor took 12.75 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 18:24:47,975 INFO L168 Benchmark]: RCFGBuilder took 126.32 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 11.5 GB. [2019-12-07 18:24:47,975 INFO L168 Benchmark]: BuchiAutomizer took 271.80 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 33.6 MB). Peak memory consumption was 33.6 MB. Max. memory is 11.5 GB. [2019-12-07 18:24:47,976 INFO L168 Benchmark]: Witness Printer took 2.73 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 18:24:47,978 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 955.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 168.25 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 111.7 MB). Free memory was 939.3 MB in the beginning and 1.1 GB in the end (delta: -167.1 MB). Peak memory consumption was 23.3 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 20.65 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 12.75 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 126.32 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 271.80 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 33.6 MB). Peak memory consumption was 33.6 MB. Max. memory is 11.5 GB. * Witness Printer took 2.73 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 2 terminating modules (2 trivial, 0 deterministic, 0 nondeterministic). 2 modules have a trivial ranking function, the largest among these consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 0.2s and 3 iterations. TraceHistogramMax:1. Analysis of lassos took 0.1s. Construction of modules took 0.0s. Büchi inclusion checks took 0.0s. Highest rank in rank-based complementation 0. Minimization of det autom 2. Minimization of nondet autom 0. Automata minimization 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 6 states and ocurred in iteration 1. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 11 SDtfs, 1 SDslu, 6 SDs, 0 SdLazy, 2 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI2 SFLT0 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...