./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loops-crafted-1/loopv2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_82be0c2d-292a-430e-8f7b-7d3d1d8921be/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_82be0c2d-292a-430e-8f7b-7d3d1d8921be/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_82be0c2d-292a-430e-8f7b-7d3d1d8921be/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_82be0c2d-292a-430e-8f7b-7d3d1d8921be/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/loops-crafted-1/loopv2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_82be0c2d-292a-430e-8f7b-7d3d1d8921be/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_82be0c2d-292a-430e-8f7b-7d3d1d8921be/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 68654c5c5ca49f0f291b56dff0b35b602882e8f2 .................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2020-12-09 08:49:48,224 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 08:49:48,225 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 08:49:48,258 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 08:49:48,259 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 08:49:48,268 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 08:49:48,270 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 08:49:48,272 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 08:49:48,274 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 08:49:48,275 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 08:49:48,276 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 08:49:48,278 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 08:49:48,278 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 08:49:48,279 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 08:49:48,281 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 08:49:48,282 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 08:49:48,283 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 08:49:48,284 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 08:49:48,286 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 08:49:48,288 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 08:49:48,290 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 08:49:48,291 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 08:49:48,293 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 08:49:48,294 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 08:49:48,297 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 08:49:48,297 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 08:49:48,298 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 08:49:48,299 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 08:49:48,299 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 08:49:48,300 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 08:49:48,301 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 08:49:48,301 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 08:49:48,302 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 08:49:48,303 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 08:49:48,304 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 08:49:48,304 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 08:49:48,305 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 08:49:48,305 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 08:49:48,305 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 08:49:48,306 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 08:49:48,307 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 08:49:48,308 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_82be0c2d-292a-430e-8f7b-7d3d1d8921be/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-12-09 08:49:48,330 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 08:49:48,331 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 08:49:48,331 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 08:49:48,332 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 08:49:48,332 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 08:49:48,332 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 08:49:48,332 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 08:49:48,332 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 08:49:48,333 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 08:49:48,333 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 08:49:48,333 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 08:49:48,333 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 08:49:48,333 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 08:49:48,334 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 08:49:48,334 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 08:49:48,335 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 08:49:48,335 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 08:49:48,335 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 08:49:48,335 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 08:49:48,335 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 08:49:48,336 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 08:49:48,336 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 08:49:48,336 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 08:49:48,336 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 08:49:48,336 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 08:49:48,337 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 08:49:48,337 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 08:49:48,337 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 08:49:48,337 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 08:49:48,338 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 08:49:48,338 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 08:49:48,338 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 08:49:48,338 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 08:49:48,338 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 08:49:48,339 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 08:49:48,339 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 08:49:48,339 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 08:49:48,339 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 08:49:48,339 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 08:49:48,340 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_82be0c2d-292a-430e-8f7b-7d3d1d8921be/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_82be0c2d-292a-430e-8f7b-7d3d1d8921be/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 68654c5c5ca49f0f291b56dff0b35b602882e8f2 [2020-12-09 08:49:48,536 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 08:49:48,556 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 08:49:48,558 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 08:49:48,559 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 08:49:48,560 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 08:49:48,561 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_82be0c2d-292a-430e-8f7b-7d3d1d8921be/bin/utaipan/../../sv-benchmarks/c/loops-crafted-1/loopv2.c [2020-12-09 08:49:48,602 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_82be0c2d-292a-430e-8f7b-7d3d1d8921be/bin/utaipan/data/140ed0f9f/b03e40c4fdbd400f88e35d21e2b2621d/FLAGe7048f6ea [2020-12-09 08:49:48,947 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 08:49:48,948 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_82be0c2d-292a-430e-8f7b-7d3d1d8921be/sv-benchmarks/c/loops-crafted-1/loopv2.c [2020-12-09 08:49:48,952 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_82be0c2d-292a-430e-8f7b-7d3d1d8921be/bin/utaipan/data/140ed0f9f/b03e40c4fdbd400f88e35d21e2b2621d/FLAGe7048f6ea [2020-12-09 08:49:49,373 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_82be0c2d-292a-430e-8f7b-7d3d1d8921be/bin/utaipan/data/140ed0f9f/b03e40c4fdbd400f88e35d21e2b2621d [2020-12-09 08:49:49,375 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 08:49:49,376 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 08:49:49,378 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 08:49:49,378 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 08:49:49,381 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 08:49:49,381 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 08:49:49" (1/1) ... [2020-12-09 08:49:49,383 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ead7caa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:49:49, skipping insertion in model container [2020-12-09 08:49:49,383 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 08:49:49" (1/1) ... [2020-12-09 08:49:49,394 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 08:49:49,404 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 08:49:49,512 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_82be0c2d-292a-430e-8f7b-7d3d1d8921be/sv-benchmarks/c/loops-crafted-1/loopv2.c[454,467] [2020-12-09 08:49:49,519 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 08:49:49,526 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 08:49:49,534 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_82be0c2d-292a-430e-8f7b-7d3d1d8921be/sv-benchmarks/c/loops-crafted-1/loopv2.c[454,467] [2020-12-09 08:49:49,537 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 08:49:49,546 INFO L208 MainTranslator]: Completed translation [2020-12-09 08:49:49,546 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:49:49 WrapperNode [2020-12-09 08:49:49,547 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 08:49:49,547 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 08:49:49,548 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 08:49:49,548 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 08:49:49,553 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:49:49" (1/1) ... [2020-12-09 08:49:49,557 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:49:49" (1/1) ... [2020-12-09 08:49:49,569 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 08:49:49,569 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 08:49:49,570 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 08:49:49,570 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 08:49:49,576 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:49:49" (1/1) ... [2020-12-09 08:49:49,576 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:49:49" (1/1) ... [2020-12-09 08:49:49,577 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:49:49" (1/1) ... [2020-12-09 08:49:49,577 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:49:49" (1/1) ... [2020-12-09 08:49:49,579 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:49:49" (1/1) ... [2020-12-09 08:49:49,582 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:49:49" (1/1) ... [2020-12-09 08:49:49,583 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:49:49" (1/1) ... [2020-12-09 08:49:49,584 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 08:49:49,585 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 08:49:49,585 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 08:49:49,585 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 08:49:49,586 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:49:49" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_82be0c2d-292a-430e-8f7b-7d3d1d8921be/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 [2020-12-09 08:49:49,639 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-09 08:49:49,639 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 08:49:49,639 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 08:49:49,639 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 08:49:49,807 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 08:49:49,807 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2020-12-09 08:49:49,809 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 08:49:49 BoogieIcfgContainer [2020-12-09 08:49:49,810 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 08:49:49,811 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 08:49:49,811 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 08:49:49,815 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 08:49:49,815 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 08:49:49" (1/3) ... [2020-12-09 08:49:49,816 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cd88d23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 08:49:49, skipping insertion in model container [2020-12-09 08:49:49,816 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:49:49" (2/3) ... [2020-12-09 08:49:49,816 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cd88d23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 08:49:49, skipping insertion in model container [2020-12-09 08:49:49,816 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 08:49:49" (3/3) ... [2020-12-09 08:49:49,818 INFO L111 eAbstractionObserver]: Analyzing ICFG loopv2.c [2020-12-09 08:49:49,830 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 08:49:49,833 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-09 08:49:49,842 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-09 08:49:49,861 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 08:49:49,861 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 08:49:49,861 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 08:49:49,861 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 08:49:49,861 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 08:49:49,861 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 08:49:49,862 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 08:49:49,862 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 08:49:49,870 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states. [2020-12-09 08:49:49,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-09 08:49:49,873 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 08:49:49,874 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-09 08:49:49,874 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 08:49:49,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 08:49:49,879 INFO L82 PathProgramCache]: Analyzing trace with hash -2025170632, now seen corresponding path program 1 times [2020-12-09 08:49:49,888 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 08:49:49,888 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087866903] [2020-12-09 08:49:49,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 08:49:49,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 08:49:50,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 08:49:50,034 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087866903] [2020-12-09 08:49:50,034 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 08:49:50,034 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 08:49:50,035 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475252542] [2020-12-09 08:49:50,038 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 08:49:50,038 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 08:49:50,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 08:49:50,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 08:49:50,048 INFO L87 Difference]: Start difference. First operand 10 states. Second operand 3 states. [2020-12-09 08:49:50,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 08:49:50,070 INFO L93 Difference]: Finished difference Result 18 states and 23 transitions. [2020-12-09 08:49:50,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 08:49:50,071 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-12-09 08:49:50,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 08:49:50,077 INFO L225 Difference]: With dead ends: 18 [2020-12-09 08:49:50,077 INFO L226 Difference]: Without dead ends: 9 [2020-12-09 08:49:50,079 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 08:49:50,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2020-12-09 08:49:50,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2020-12-09 08:49:50,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-12-09 08:49:50,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 11 transitions. [2020-12-09 08:49:50,102 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 11 transitions. Word has length 6 [2020-12-09 08:49:50,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 08:49:50,102 INFO L481 AbstractCegarLoop]: Abstraction has 9 states and 11 transitions. [2020-12-09 08:49:50,102 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 08:49:50,103 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 11 transitions. [2020-12-09 08:49:50,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-09 08:49:50,103 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 08:49:50,103 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-09 08:49:50,103 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-09 08:49:50,103 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 08:49:50,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 08:49:50,104 INFO L82 PathProgramCache]: Analyzing trace with hash 1610123544, now seen corresponding path program 1 times [2020-12-09 08:49:50,104 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 08:49:50,104 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506805707] [2020-12-09 08:49:50,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 08:49:50,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 08:49:50,189 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 08:49:50,189 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506805707] [2020-12-09 08:49:50,189 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [616021280] [2020-12-09 08:49:50,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_82be0c2d-292a-430e-8f7b-7d3d1d8921be/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 [2020-12-09 08:49:50,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 08:49:50,223 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-09 08:49:50,226 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 08:49:50,249 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 08:49:50,249 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 08:49:50,298 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 08:49:50,298 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [787830977] [2020-12-09 08:49:50,314 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2020-12-09 08:49:50,314 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 08:49:50,317 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 08:49:50,321 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 08:49:50,322 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 08:49:50,640 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-09 08:49:50,760 WARN L197 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 62 [2020-12-09 08:49:51,169 WARN L197 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 61 [2020-12-09 08:49:51,172 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 08:49:51,172 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-12-09 08:49:51,172 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2020-12-09 08:49:51,173 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567429295] [2020-12-09 08:49:51,173 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-09 08:49:51,174 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 08:49:51,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-09 08:49:51,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2020-12-09 08:49:51,175 INFO L87 Difference]: Start difference. First operand 9 states and 11 transitions. Second operand 7 states. [2020-12-09 08:49:51,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 08:49:51,253 INFO L93 Difference]: Finished difference Result 12 states and 17 transitions. [2020-12-09 08:49:51,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 08:49:51,253 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 7 [2020-12-09 08:49:51,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 08:49:51,254 INFO L225 Difference]: With dead ends: 12 [2020-12-09 08:49:51,254 INFO L226 Difference]: Without dead ends: 0 [2020-12-09 08:49:51,255 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2020-12-09 08:49:51,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-09 08:49:51,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-09 08:49:51,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-09 08:49:51,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-09 08:49:51,256 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 7 [2020-12-09 08:49:51,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 08:49:51,256 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-09 08:49:51,256 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-09 08:49:51,256 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-09 08:49:51,256 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-09 08:49:51,458 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-12-09 08:49:51,462 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-09 08:49:51,599 INFO L265 CegarLoopResult]: At program point L33(lines 17 34) the Hoare annotation is: true [2020-12-09 08:49:51,600 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-09 08:49:51,600 INFO L262 CegarLoopResult]: For program point L11(lines 11 13) no Hoare annotation was computed. [2020-12-09 08:49:51,600 INFO L265 CegarLoopResult]: At program point L11-2(lines 10 15) the Hoare annotation is: true [2020-12-09 08:49:51,600 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-09 08:49:51,601 INFO L258 CegarLoopResult]: At program point L28-2(lines 28 31) the Hoare annotation is: (and (= (mod ULTIMATE.start_main_~j~0 2) 0) (<= (div (+ (* ULTIMATE.start_main_~i~0 (- 1)) (- 6)) (- 2)) (+ (div (+ ULTIMATE.start_main_~i~0 4) 2) 1))) [2020-12-09 08:49:51,601 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-12-09 08:49:51,601 INFO L262 CegarLoopResult]: For program point L20(line 20) no Hoare annotation was computed. [2020-12-09 08:49:51,601 INFO L258 CegarLoopResult]: At program point L22-2(lines 22 26) the Hoare annotation is: (and (= (mod ULTIMATE.start_main_~j~0 2) 0) (<= (div (+ (* ULTIMATE.start_main_~i~0 (- 1)) (- 6)) (- 2)) (+ (div (+ ULTIMATE.start_main_~i~0 4) 2) 1))) [2020-12-09 08:49:51,602 INFO L262 CegarLoopResult]: For program point L12(line 12) no Hoare annotation was computed. [2020-12-09 08:49:51,620 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 08:49:51 BoogieIcfgContainer [2020-12-09 08:49:51,621 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 08:49:51,621 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 08:49:51,621 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 08:49:51,622 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 08:49:51,622 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 08:49:49" (3/4) ... [2020-12-09 08:49:51,625 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-09 08:49:51,633 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2020-12-09 08:49:51,633 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2020-12-09 08:49:51,633 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-09 08:49:51,633 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-09 08:49:51,660 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_82be0c2d-292a-430e-8f7b-7d3d1d8921be/bin/utaipan/witness.graphml [2020-12-09 08:49:51,660 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 08:49:51,661 INFO L168 Benchmark]: Toolchain (without parser) took 2283.99 ms. Allocated memory was 117.4 MB in the beginning and 146.8 MB in the end (delta: 29.4 MB). Free memory was 66.3 MB in the beginning and 107.3 MB in the end (delta: -41.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 08:49:51,661 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 117.4 MB. Free memory is still 82.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 08:49:51,661 INFO L168 Benchmark]: CACSL2BoogieTranslator took 169.23 ms. Allocated memory is still 117.4 MB. Free memory was 66.2 MB in the beginning and 94.0 MB in the end (delta: -27.8 MB). Peak memory consumption was 6.9 MB. Max. memory is 16.1 GB. [2020-12-09 08:49:51,662 INFO L168 Benchmark]: Boogie Procedure Inliner took 21.65 ms. Allocated memory is still 117.4 MB. Free memory was 94.0 MB in the beginning and 92.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 08:49:51,662 INFO L168 Benchmark]: Boogie Preprocessor took 14.50 ms. Allocated memory is still 117.4 MB. Free memory was 92.7 MB in the beginning and 91.4 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 08:49:51,662 INFO L168 Benchmark]: RCFGBuilder took 225.26 ms. Allocated memory is still 117.4 MB. Free memory was 91.4 MB in the beginning and 76.4 MB in the end (delta: 15.0 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-12-09 08:49:51,663 INFO L168 Benchmark]: TraceAbstraction took 1809.42 ms. Allocated memory was 117.4 MB in the beginning and 146.8 MB in the end (delta: 29.4 MB). Free memory was 75.9 MB in the beginning and 109.4 MB in the end (delta: -33.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 08:49:51,663 INFO L168 Benchmark]: Witness Printer took 38.72 ms. Allocated memory is still 146.8 MB. Free memory was 109.4 MB in the beginning and 107.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 08:49:51,665 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 117.4 MB. Free memory is still 82.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 169.23 ms. Allocated memory is still 117.4 MB. Free memory was 66.2 MB in the beginning and 94.0 MB in the end (delta: -27.8 MB). Peak memory consumption was 6.9 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 21.65 ms. Allocated memory is still 117.4 MB. Free memory was 94.0 MB in the beginning and 92.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 14.50 ms. Allocated memory is still 117.4 MB. Free memory was 92.7 MB in the beginning and 91.4 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 225.26 ms. Allocated memory is still 117.4 MB. Free memory was 91.4 MB in the beginning and 76.4 MB in the end (delta: 15.0 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1809.42 ms. Allocated memory was 117.4 MB in the beginning and 146.8 MB in the end (delta: 29.4 MB). Free memory was 75.9 MB in the beginning and 109.4 MB in the end (delta: -33.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 38.72 ms. Allocated memory is still 146.8 MB. Free memory was 109.4 MB in the beginning and 107.3 MB in the end (delta: 2.1 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: 12]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 28]: Loop Invariant Derived loop invariant: j % 2 == 0 && (i * -1 + -6) / -2 <= (i + 4) / 2 + 1 - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: j % 2 == 0 && (i * -1 + -6) / -2 <= (i + 4) / 2 + 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 10 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.5s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 13 SDtfs, 3 SDslu, 7 SDs, 0 SdLazy, 29 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 29 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=10occurred 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 11 NumberOfFragments, 44 HoareAnnotationTreeSize, 4 FomulaSimplifications, 12 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 61 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 20 NumberOfCodeBlocks, 20 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 23 ConstructedInterpolants, 0 QuantifiedInterpolants, 453 SizeOfPredicates, 2 NumberOfNonLiveVariables, 56 ConjunctsInSsa, 7 ConjunctsInUnsatCore, 4 InterpolantComputations, 1 PerfectInterpolantSequences, 0/3 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...