./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted/NonTerminationSimple7.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_aa68308e-9867-4119-b841-50d9235eefe5/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_aa68308e-9867-4119-b841-50d9235eefe5/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_aa68308e-9867-4119-b841-50d9235eefe5/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_aa68308e-9867-4119-b841-50d9235eefe5/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/termination-crafted/NonTerminationSimple7.c -s /tmp/vcloud-vcloud-master/worker/run_dir_aa68308e-9867-4119-b841-50d9235eefe5/bin/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_aa68308e-9867-4119-b841-50d9235eefe5/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash e53f2fdb98621a674cb41b7388b3e8cc7db6ca72 ...................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-22 13:06:38,228 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-22 13:06:38,230 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-22 13:06:38,278 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-22 13:06:38,280 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-22 13:06:38,285 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-22 13:06:38,288 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-22 13:06:38,290 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-22 13:06:38,292 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-22 13:06:38,293 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-22 13:06:38,294 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-22 13:06:38,296 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-22 13:06:38,296 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-22 13:06:38,297 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-22 13:06:38,299 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-22 13:06:38,300 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-22 13:06:38,301 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-22 13:06:38,302 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-22 13:06:38,305 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-22 13:06:38,307 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-22 13:06:38,309 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-22 13:06:38,311 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-22 13:06:38,312 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-22 13:06:38,313 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-22 13:06:38,317 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-22 13:06:38,317 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-22 13:06:38,318 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-22 13:06:38,319 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-22 13:06:38,320 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-22 13:06:38,321 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-22 13:06:38,321 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-22 13:06:38,322 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-22 13:06:38,323 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-22 13:06:38,324 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-22 13:06:38,325 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-22 13:06:38,326 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-22 13:06:38,327 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-22 13:06:38,327 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-22 13:06:38,327 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-22 13:06:38,329 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-22 13:06:38,329 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-22 13:06:38,334 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_aa68308e-9867-4119-b841-50d9235eefe5/bin/utaipan/config/svcomp-Overflow-64bit-Taipan_Default.epf [2020-11-22 13:06:38,373 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-22 13:06:38,374 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-22 13:06:38,374 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-22 13:06:38,375 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-22 13:06:38,375 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-22 13:06:38,375 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-22 13:06:38,375 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-22 13:06:38,383 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-22 13:06:38,384 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-22 13:06:38,384 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-22 13:06:38,385 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-22 13:06:38,385 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-22 13:06:38,386 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-22 13:06:38,386 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-22 13:06:38,386 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-22 13:06:38,387 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-22 13:06:38,387 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-22 13:06:38,387 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-22 13:06:38,387 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-22 13:06:38,388 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-22 13:06:38,388 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-22 13:06:38,388 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-22 13:06:38,388 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2020-11-22 13:06:38,389 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-22 13:06:38,389 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-22 13:06:38,389 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-22 13:06:38,389 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-22 13:06:38,390 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-22 13:06:38,390 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-22 13:06:38,392 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 13:06:38,392 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-22 13:06:38,392 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-22 13:06:38,393 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-22 13:06:38,393 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-22 13:06:38,393 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-22 13:06:38,393 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-22 13:06:38,393 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-22 13:06:38,394 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-22 13:06:38,394 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_aa68308e-9867-4119-b841-50d9235eefe5/bin/utaipan/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_aa68308e-9867-4119-b841-50d9235eefe5/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e53f2fdb98621a674cb41b7388b3e8cc7db6ca72 [2020-11-22 13:06:38,631 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-22 13:06:38,664 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-22 13:06:38,667 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-22 13:06:38,668 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-22 13:06:38,669 INFO L275 PluginConnector]: CDTParser initialized [2020-11-22 13:06:38,670 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_aa68308e-9867-4119-b841-50d9235eefe5/bin/utaipan/../../sv-benchmarks/c/termination-crafted/NonTerminationSimple7.c [2020-11-22 13:06:38,750 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_aa68308e-9867-4119-b841-50d9235eefe5/bin/utaipan/data/2a4918899/8f9c217fdf0a489e96f4b1fa90f02fe5/FLAG15ac71e24 [2020-11-22 13:06:39,181 INFO L306 CDTParser]: Found 1 translation units. [2020-11-22 13:06:39,182 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_aa68308e-9867-4119-b841-50d9235eefe5/sv-benchmarks/c/termination-crafted/NonTerminationSimple7.c [2020-11-22 13:06:39,187 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_aa68308e-9867-4119-b841-50d9235eefe5/bin/utaipan/data/2a4918899/8f9c217fdf0a489e96f4b1fa90f02fe5/FLAG15ac71e24 [2020-11-22 13:06:39,573 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_aa68308e-9867-4119-b841-50d9235eefe5/bin/utaipan/data/2a4918899/8f9c217fdf0a489e96f4b1fa90f02fe5 [2020-11-22 13:06:39,575 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-22 13:06:39,576 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-22 13:06:39,578 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-22 13:06:39,578 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-22 13:06:39,587 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-22 13:06:39,588 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:06:39" (1/1) ... [2020-11-22 13:06:39,589 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7184a38c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:39, skipping insertion in model container [2020-11-22 13:06:39,590 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:06:39" (1/1) ... [2020-11-22 13:06:39,597 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-22 13:06:39,606 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-22 13:06:39,731 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 13:06:39,762 INFO L203 MainTranslator]: Completed pre-run [2020-11-22 13:06:39,775 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 13:06:39,799 INFO L208 MainTranslator]: Completed translation [2020-11-22 13:06:39,800 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:39 WrapperNode [2020-11-22 13:06:39,800 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-22 13:06:39,802 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-22 13:06:39,802 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-22 13:06:39,802 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-22 13:06:39,810 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:39" (1/1) ... [2020-11-22 13:06:39,815 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:39" (1/1) ... [2020-11-22 13:06:39,830 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-22 13:06:39,831 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-22 13:06:39,831 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-22 13:06:39,832 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-22 13:06:39,840 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:39" (1/1) ... [2020-11-22 13:06:39,840 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:39" (1/1) ... [2020-11-22 13:06:39,841 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:39" (1/1) ... [2020-11-22 13:06:39,841 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:39" (1/1) ... [2020-11-22 13:06:39,843 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:39" (1/1) ... [2020-11-22 13:06:39,846 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:39" (1/1) ... [2020-11-22 13:06:39,847 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:39" (1/1) ... [2020-11-22 13:06:39,849 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-22 13:06:39,850 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-22 13:06:39,850 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-22 13:06:39,850 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-22 13:06:39,851 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:39" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_aa68308e-9867-4119-b841-50d9235eefe5/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 13:06:39,936 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-22 13:06:39,936 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-22 13:06:40,113 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-22 13:06:40,113 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-11-22 13:06:40,115 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:06:40 BoogieIcfgContainer [2020-11-22 13:06:40,115 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-22 13:06:40,117 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-22 13:06:40,117 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-22 13:06:40,121 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-22 13:06:40,121 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 01:06:39" (1/3) ... [2020-11-22 13:06:40,122 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c42e00c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:06:40, skipping insertion in model container [2020-11-22 13:06:40,122 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:39" (2/3) ... [2020-11-22 13:06:40,136 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c42e00c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:06:40, skipping insertion in model container [2020-11-22 13:06:40,136 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:06:40" (3/3) ... [2020-11-22 13:06:40,138 INFO L111 eAbstractionObserver]: Analyzing ICFG NonTerminationSimple7.c [2020-11-22 13:06:40,149 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-22 13:06:40,153 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-11-22 13:06:40,166 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-11-22 13:06:40,189 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-22 13:06:40,190 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-22 13:06:40,190 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-22 13:06:40,190 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-22 13:06:40,190 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-22 13:06:40,190 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-22 13:06:40,191 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-22 13:06:40,191 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-22 13:06:40,203 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states. [2020-11-22 13:06:40,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-11-22 13:06:40,208 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:06:40,208 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-11-22 13:06:40,209 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-22 13:06:40,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:06:40,215 INFO L82 PathProgramCache]: Analyzing trace with hash 957573, now seen corresponding path program 1 times [2020-11-22 13:06:40,225 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:06:40,225 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065366474] [2020-11-22 13:06:40,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:06:40,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:06:40,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:06:40,395 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065366474] [2020-11-22 13:06:40,396 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:06:40,396 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-22 13:06:40,397 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57934828] [2020-11-22 13:06:40,401 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 13:06:40,402 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:06:40,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 13:06:40,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-22 13:06:40,429 INFO L87 Difference]: Start difference. First operand 9 states. Second operand 4 states. [2020-11-22 13:06:40,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:06:40,573 INFO L93 Difference]: Finished difference Result 14 states and 15 transitions. [2020-11-22 13:06:40,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-22 13:06:40,575 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2020-11-22 13:06:40,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:06:40,584 INFO L225 Difference]: With dead ends: 14 [2020-11-22 13:06:40,584 INFO L226 Difference]: Without dead ends: 9 [2020-11-22 13:06:40,588 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-22 13:06:40,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2020-11-22 13:06:40,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2020-11-22 13:06:40,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-11-22 13:06:40,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2020-11-22 13:06:40,633 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 4 [2020-11-22 13:06:40,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:06:40,633 INFO L481 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2020-11-22 13:06:40,633 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 13:06:40,634 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2020-11-22 13:06:40,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-11-22 13:06:40,634 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:06:40,635 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-11-22 13:06:40,635 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-22 13:06:40,635 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-22 13:06:40,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:06:40,641 INFO L82 PathProgramCache]: Analyzing trace with hash 29684810, now seen corresponding path program 1 times [2020-11-22 13:06:40,641 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:06:40,642 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250278980] [2020-11-22 13:06:40,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:06:40,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:06:40,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:06:40,701 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250278980] [2020-11-22 13:06:40,701 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:06:40,701 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-22 13:06:40,701 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643787414] [2020-11-22 13:06:40,702 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 13:06:40,703 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:06:40,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 13:06:40,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-22 13:06:40,704 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand 4 states. [2020-11-22 13:06:40,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:06:40,733 INFO L93 Difference]: Finished difference Result 9 states and 9 transitions. [2020-11-22 13:06:40,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-22 13:06:40,733 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2020-11-22 13:06:40,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:06:40,734 INFO L225 Difference]: With dead ends: 9 [2020-11-22 13:06:40,734 INFO L226 Difference]: Without dead ends: 8 [2020-11-22 13:06:40,735 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-22 13:06:40,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2020-11-22 13:06:40,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2020-11-22 13:06:40,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-11-22 13:06:40,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2020-11-22 13:06:40,738 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 5 [2020-11-22 13:06:40,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:06:40,738 INFO L481 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2020-11-22 13:06:40,738 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 13:06:40,738 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2020-11-22 13:06:40,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-22 13:06:40,739 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:06:40,739 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2020-11-22 13:06:40,739 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-22 13:06:40,739 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-22 13:06:40,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:06:40,740 INFO L82 PathProgramCache]: Analyzing trace with hash -1537667284, now seen corresponding path program 1 times [2020-11-22 13:06:40,740 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:06:40,741 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927134445] [2020-11-22 13:06:40,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:06:40,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:06:40,791 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:06:40,792 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927134445] [2020-11-22 13:06:40,792 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1015381937] [2020-11-22 13:06:40,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_aa68308e-9867-4119-b841-50d9235eefe5/bin/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-22 13:06:40,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:06:40,824 INFO L263 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-22 13:06:40,831 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:06:40,915 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:06:40,915 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:06:40,950 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:06:40,951 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2020-11-22 13:06:40,951 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 5 [2020-11-22 13:06:40,951 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088897828] [2020-11-22 13:06:40,951 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-22 13:06:40,952 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:06:40,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-22 13:06:40,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-11-22 13:06:40,953 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand 5 states. [2020-11-22 13:06:40,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:06:40,968 INFO L93 Difference]: Finished difference Result 8 states and 8 transitions. [2020-11-22 13:06:40,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-22 13:06:40,969 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 7 [2020-11-22 13:06:40,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:06:40,970 INFO L225 Difference]: With dead ends: 8 [2020-11-22 13:06:40,970 INFO L226 Difference]: Without dead ends: 0 [2020-11-22 13:06:40,970 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-11-22 13:06:40,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-22 13:06:40,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-22 13:06:40,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-22 13:06:40,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-22 13:06:40,971 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 7 [2020-11-22 13:06:40,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:06:40,972 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-22 13:06:40,972 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-22 13:06:40,972 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-22 13:06:40,972 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-22 13:06:41,188 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-11-22 13:06:41,189 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-22 13:06:41,272 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 17) no Hoare annotation was computed. [2020-11-22 13:06:41,272 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-22 13:06:41,272 INFO L274 CegarLoopResult]: For program point L17(line 17) no Hoare annotation was computed. [2020-11-22 13:06:41,272 INFO L274 CegarLoopResult]: For program point L17-1(line 17) no Hoare annotation was computed. [2020-11-22 13:06:41,272 INFO L274 CegarLoopResult]: For program point L15(lines 15 19) no Hoare annotation was computed. [2020-11-22 13:06:41,272 INFO L270 CegarLoopResult]: At program point L15-1(lines 15 19) the Hoare annotation is: (<= ULTIMATE.start_main_~x~0 2147483647) [2020-11-22 13:06:41,273 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 17) no Hoare annotation was computed. [2020-11-22 13:06:41,273 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-22 13:06:41,273 INFO L270 CegarLoopResult]: At program point L16-2(lines 16 18) the Hoare annotation is: (and (<= 0 ULTIMATE.start_main_~c~0) (<= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~c~0 2147483647)) (<= ULTIMATE.start_main_~c~0 0)) [2020-11-22 13:06:41,283 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 01:06:41 BoogieIcfgContainer [2020-11-22 13:06:41,283 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-22 13:06:41,283 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-22 13:06:41,283 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-22 13:06:41,284 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-22 13:06:41,284 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:06:40" (3/4) ... [2020-11-22 13:06:41,287 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-22 13:06:41,296 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2020-11-22 13:06:41,296 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-11-22 13:06:41,296 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-22 13:06:41,329 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_aa68308e-9867-4119-b841-50d9235eefe5/bin/utaipan/witness.graphml [2020-11-22 13:06:41,329 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-22 13:06:41,331 INFO L168 Benchmark]: Toolchain (without parser) took 1753.34 ms. Allocated memory was 92.3 MB in the beginning and 119.5 MB in the end (delta: 27.3 MB). Free memory was 61.7 MB in the beginning and 89.5 MB in the end (delta: -27.8 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 13:06:41,331 INFO L168 Benchmark]: CDTParser took 3.27 ms. Allocated memory is still 92.3 MB. Free memory is still 48.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 13:06:41,332 INFO L168 Benchmark]: CACSL2BoogieTranslator took 222.99 ms. Allocated memory was 92.3 MB in the beginning and 119.5 MB in the end (delta: 27.3 MB). Free memory was 61.7 MB in the beginning and 97.4 MB in the end (delta: -35.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-22 13:06:41,332 INFO L168 Benchmark]: Boogie Procedure Inliner took 28.84 ms. Allocated memory is still 119.5 MB. Free memory was 97.4 MB in the beginning and 96.0 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 13:06:41,333 INFO L168 Benchmark]: Boogie Preprocessor took 17.66 ms. Allocated memory is still 119.5 MB. Free memory was 96.0 MB in the beginning and 95.3 MB in the end (delta: 647.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 13:06:41,338 INFO L168 Benchmark]: RCFGBuilder took 265.75 ms. Allocated memory is still 119.5 MB. Free memory was 95.3 MB in the beginning and 85.6 MB in the end (delta: 9.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-22 13:06:41,340 INFO L168 Benchmark]: TraceAbstraction took 1165.71 ms. Allocated memory is still 119.5 MB. Free memory was 84.9 MB in the beginning and 92.1 MB in the end (delta: -7.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 13:06:41,343 INFO L168 Benchmark]: Witness Printer took 45.68 ms. Allocated memory is still 119.5 MB. Free memory was 92.1 MB in the beginning and 89.5 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 13:06:41,347 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 3.27 ms. Allocated memory is still 92.3 MB. Free memory is still 48.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 222.99 ms. Allocated memory was 92.3 MB in the beginning and 119.5 MB in the end (delta: 27.3 MB). Free memory was 61.7 MB in the beginning and 97.4 MB in the end (delta: -35.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 28.84 ms. Allocated memory is still 119.5 MB. Free memory was 97.4 MB in the beginning and 96.0 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 17.66 ms. Allocated memory is still 119.5 MB. Free memory was 96.0 MB in the beginning and 95.3 MB in the end (delta: 647.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 265.75 ms. Allocated memory is still 119.5 MB. Free memory was 95.3 MB in the beginning and 85.6 MB in the end (delta: 9.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1165.71 ms. Allocated memory is still 119.5 MB. Free memory was 84.9 MB in the beginning and 92.1 MB in the end (delta: -7.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 45.68 ms. Allocated memory is still 119.5 MB. Free memory was 92.1 MB in the beginning and 89.5 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 17]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 17]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - InvariantResult [Line: 15]: Loop Invariant Derived loop invariant: x <= 2147483647 - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: (0 <= c && x <= c + 2147483647) && c <= 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 9 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.0s, OverallIterations: 3, TraceHistogramMax: 2, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 10 SDtfs, 23 SDslu, 1 SDs, 0 SdLazy, 23 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 22 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 4 NumberOfFragments, 15 HoareAnnotationTreeSize, 2 FomulaSimplifications, 10 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 29 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 23 NumberOfCodeBlocks, 23 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 25 ConstructedInterpolants, 0 QuantifiedInterpolants, 755 SizeOfPredicates, 1 NumberOfNonLiveVariables, 19 ConjunctsInSsa, 5 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 2/6 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...