./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-lit/cggmp2005_variant.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_5ff3812e-1474-42f0-8e28-60e178ecc2c7/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_5ff3812e-1474-42f0-8e28-60e178ecc2c7/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_5ff3812e-1474-42f0-8e28-60e178ecc2c7/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_5ff3812e-1474-42f0-8e28-60e178ecc2c7/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-lit/cggmp2005_variant.i -s /tmp/vcloud-vcloud-master/worker/run_dir_5ff3812e-1474-42f0-8e28-60e178ecc2c7/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_5ff3812e-1474-42f0-8e28-60e178ecc2c7/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 53bb793d04b8582ac13d1842856082c93ca272cf ................................................................................................................................................................................................................................................................................................................................................................................................................. 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 13:05:28,311 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-22 13:05:28,314 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-22 13:05:28,381 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-22 13:05:28,382 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-22 13:05:28,383 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-22 13:05:28,388 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-22 13:05:28,390 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-22 13:05:28,412 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-22 13:05:28,413 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-22 13:05:28,414 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-22 13:05:28,415 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-22 13:05:28,415 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-22 13:05:28,416 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-22 13:05:28,418 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-22 13:05:28,419 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-22 13:05:28,420 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-22 13:05:28,422 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-22 13:05:28,424 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-22 13:05:28,426 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-22 13:05:28,428 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-22 13:05:28,429 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-22 13:05:28,430 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-22 13:05:28,431 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-22 13:05:28,434 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-22 13:05:28,434 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-22 13:05:28,435 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-22 13:05:28,436 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-22 13:05:28,436 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-22 13:05:28,437 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-22 13:05:28,438 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-22 13:05:28,439 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-22 13:05:28,440 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-22 13:05:28,440 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-22 13:05:28,442 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-22 13:05:28,442 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-22 13:05:28,443 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-22 13:05:28,443 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-22 13:05:28,444 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-22 13:05:28,445 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-22 13:05:28,446 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-22 13:05:28,447 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_5ff3812e-1474-42f0-8e28-60e178ecc2c7/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-22 13:05:28,469 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-22 13:05:28,469 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-22 13:05:28,470 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-22 13:05:28,470 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-22 13:05:28,471 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-22 13:05:28,471 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-22 13:05:28,471 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-22 13:05:28,471 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-22 13:05:28,472 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-22 13:05:28,472 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-22 13:05:28,472 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-22 13:05:28,473 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-22 13:05:28,473 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-22 13:05:28,473 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-22 13:05:28,473 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-22 13:05:28,474 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-22 13:05:28,474 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-22 13:05:28,475 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-22 13:05:28,475 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-22 13:05:28,475 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-22 13:05:28,475 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-22 13:05:28,476 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-22 13:05:28,476 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-22 13:05:28,476 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-22 13:05:28,477 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-22 13:05:28,477 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-22 13:05:28,477 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-22 13:05:28,477 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-22 13:05:28,478 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-22 13:05:28,478 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-22 13:05:28,478 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-22 13:05:28,479 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 13:05:28,479 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-22 13:05:28,479 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-22 13:05:28,479 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-22 13:05:28,480 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-22 13:05:28,480 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-22 13:05:28,480 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-22 13:05:28,481 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-22 13:05:28,481 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-22 13:05:28,481 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_5ff3812e-1474-42f0-8e28-60e178ecc2c7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_5ff3812e-1474-42f0-8e28-60e178ecc2c7/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 53bb793d04b8582ac13d1842856082c93ca272cf [2020-11-22 13:05:28,694 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-22 13:05:28,719 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-22 13:05:28,721 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-22 13:05:28,723 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-22 13:05:28,723 INFO L275 PluginConnector]: CDTParser initialized [2020-11-22 13:05:28,724 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_5ff3812e-1474-42f0-8e28-60e178ecc2c7/bin/utaipan/../../sv-benchmarks/c/loop-lit/cggmp2005_variant.i [2020-11-22 13:05:28,786 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_5ff3812e-1474-42f0-8e28-60e178ecc2c7/bin/utaipan/data/56fb1453d/b09c7d9657824d12bd0364a5966c713c/FLAGe8edb6d38 [2020-11-22 13:05:29,202 INFO L306 CDTParser]: Found 1 translation units. [2020-11-22 13:05:29,203 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_5ff3812e-1474-42f0-8e28-60e178ecc2c7/sv-benchmarks/c/loop-lit/cggmp2005_variant.i [2020-11-22 13:05:29,208 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_5ff3812e-1474-42f0-8e28-60e178ecc2c7/bin/utaipan/data/56fb1453d/b09c7d9657824d12bd0364a5966c713c/FLAGe8edb6d38 [2020-11-22 13:05:29,601 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_5ff3812e-1474-42f0-8e28-60e178ecc2c7/bin/utaipan/data/56fb1453d/b09c7d9657824d12bd0364a5966c713c [2020-11-22 13:05:29,603 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-22 13:05:29,604 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-22 13:05:29,609 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-22 13:05:29,609 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-22 13:05:29,612 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-22 13:05:29,612 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:05:29" (1/1) ... [2020-11-22 13:05:29,614 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69088d17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:29, skipping insertion in model container [2020-11-22 13:05:29,614 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:05:29" (1/1) ... [2020-11-22 13:05:29,621 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-22 13:05:29,635 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-22 13:05:29,797 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 13:05:29,806 INFO L203 MainTranslator]: Completed pre-run [2020-11-22 13:05:29,819 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 13:05:29,832 INFO L208 MainTranslator]: Completed translation [2020-11-22 13:05:29,832 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:29 WrapperNode [2020-11-22 13:05:29,832 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-22 13:05:29,833 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-22 13:05:29,834 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-22 13:05:29,834 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-22 13:05:29,840 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:29" (1/1) ... [2020-11-22 13:05:29,846 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:29" (1/1) ... [2020-11-22 13:05:29,862 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-22 13:05:29,862 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-22 13:05:29,862 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-22 13:05:29,863 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-22 13:05:29,870 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:29" (1/1) ... [2020-11-22 13:05:29,871 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:29" (1/1) ... [2020-11-22 13:05:29,872 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:29" (1/1) ... [2020-11-22 13:05:29,872 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:29" (1/1) ... [2020-11-22 13:05:29,875 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:29" (1/1) ... [2020-11-22 13:05:29,878 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:29" (1/1) ... [2020-11-22 13:05:29,879 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:29" (1/1) ... [2020-11-22 13:05:29,880 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-22 13:05:29,881 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-22 13:05:29,881 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-22 13:05:29,882 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-22 13:05:29,882 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:29" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5ff3812e-1474-42f0-8e28-60e178ecc2c7/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 13:05:29,958 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-22 13:05:29,959 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-22 13:05:29,959 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-22 13:05:29,959 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-22 13:05:30,213 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-22 13:05:30,213 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-11-22 13:05:30,215 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:05:30 BoogieIcfgContainer [2020-11-22 13:05:30,215 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-22 13:05:30,224 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-22 13:05:30,224 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-22 13:05:30,229 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-22 13:05:30,229 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 01:05:29" (1/3) ... [2020-11-22 13:05:30,235 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@521665c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:05:30, skipping insertion in model container [2020-11-22 13:05:30,235 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:05:29" (2/3) ... [2020-11-22 13:05:30,236 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@521665c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:05:30, skipping insertion in model container [2020-11-22 13:05:30,236 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:05:30" (3/3) ... [2020-11-22 13:05:30,237 INFO L111 eAbstractionObserver]: Analyzing ICFG cggmp2005_variant.i [2020-11-22 13:05:30,248 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-22 13:05:30,270 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-22 13:05:30,283 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-22 13:05:30,317 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-22 13:05:30,317 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-22 13:05:30,317 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-22 13:05:30,318 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-22 13:05:30,318 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-22 13:05:30,318 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-22 13:05:30,318 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-22 13:05:30,318 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-22 13:05:30,328 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states. [2020-11-22 13:05:30,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-22 13:05:30,332 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:05:30,333 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-11-22 13:05:30,333 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:05:30,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:05:30,338 INFO L82 PathProgramCache]: Analyzing trace with hash 2126465243, now seen corresponding path program 1 times [2020-11-22 13:05:30,344 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:05:30,345 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466758728] [2020-11-22 13:05:30,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:05:30,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:05:30,476 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 13:05:30,476 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466758728] [2020-11-22 13:05:30,477 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:05:30,477 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-22 13:05:30,478 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858033874] [2020-11-22 13:05:30,482 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 13:05:30,482 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:05:30,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 13:05:30,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 13:05:30,498 INFO L87 Difference]: Start difference. First operand 11 states. Second operand 3 states. [2020-11-22 13:05:30,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:05:30,539 INFO L93 Difference]: Finished difference Result 19 states and 24 transitions. [2020-11-22 13:05:30,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 13:05:30,541 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-11-22 13:05:30,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:05:30,548 INFO L225 Difference]: With dead ends: 19 [2020-11-22 13:05:30,549 INFO L226 Difference]: Without dead ends: 8 [2020-11-22 13:05:30,551 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 [2020-11-22 13:05:30,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2020-11-22 13:05:30,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2020-11-22 13:05:30,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-11-22 13:05:30,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2020-11-22 13:05:30,580 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 6 [2020-11-22 13:05:30,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:05:30,581 INFO L481 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2020-11-22 13:05:30,581 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 13:05:30,581 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2020-11-22 13:05:30,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-22 13:05:30,582 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:05:30,582 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:05:30,582 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-22 13:05:30,583 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:05:30,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:05:30,584 INFO L82 PathProgramCache]: Analyzing trace with hash 1467386769, now seen corresponding path program 1 times [2020-11-22 13:05:30,584 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:05:30,584 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134307833] [2020-11-22 13:05:30,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:05:30,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:05:30,724 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:05:30,725 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134307833] [2020-11-22 13:05:30,725 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1324907080] [2020-11-22 13:05:30,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5ff3812e-1474-42f0-8e28-60e178ecc2c7/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 13:05:30,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:05:30,778 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 14 conjunts are in the unsatisfiable core [2020-11-22 13:05:30,784 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:05:30,935 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-22 13:05:30,949 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-22 13:05:30,970 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:05:30,970 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:05:30,987 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-22 13:05:31,055 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:05:31,056 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1664166229] [2020-11-22 13:05:31,081 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2020-11-22 13:05:31,082 INFO L166 IcfgInterpreter]: Building call graph [2020-11-22 13:05:31,087 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-11-22 13:05:31,094 INFO L176 IcfgInterpreter]: Starting interpretation [2020-11-22 13:05:31,095 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-11-22 13:05:31,635 INFO L180 IcfgInterpreter]: Interpretation finished [2020-11-22 13:05:31,761 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 34 [2020-11-22 13:05:31,918 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 47 [2020-11-22 13:05:32,114 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-22 13:05:32,115 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-11-22 13:05:32,115 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2020-11-22 13:05:32,116 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43095661] [2020-11-22 13:05:32,116 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-22 13:05:32,116 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:05:32,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-22 13:05:32,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2020-11-22 13:05:32,118 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand 11 states. [2020-11-22 13:05:32,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:05:32,179 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2020-11-22 13:05:32,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-22 13:05:32,179 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 7 [2020-11-22 13:05:32,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:05:32,180 INFO L225 Difference]: With dead ends: 13 [2020-11-22 13:05:32,180 INFO L226 Difference]: Without dead ends: 9 [2020-11-22 13:05:32,181 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2020-11-22 13:05:32,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2020-11-22 13:05:32,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2020-11-22 13:05:32,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-11-22 13:05:32,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2020-11-22 13:05:32,184 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2020-11-22 13:05:32,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:05:32,184 INFO L481 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2020-11-22 13:05:32,184 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-11-22 13:05:32,184 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2020-11-22 13:05:32,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-22 13:05:32,184 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:05:32,185 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2020-11-22 13:05:32,388 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-11-22 13:05:32,388 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:05:32,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:05:32,389 INFO L82 PathProgramCache]: Analyzing trace with hash -1784176741, now seen corresponding path program 2 times [2020-11-22 13:05:32,389 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:05:32,389 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178027259] [2020-11-22 13:05:32,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:05:32,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:05:32,506 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:05:32,506 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178027259] [2020-11-22 13:05:32,507 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [274474911] [2020-11-22 13:05:32,507 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5ff3812e-1474-42f0-8e28-60e178ecc2c7/bin/utaipan/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-22 13:05:32,547 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-11-22 13:05:32,548 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-22 13:05:32,549 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 20 conjunts are in the unsatisfiable core [2020-11-22 13:05:32,551 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:05:32,897 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:05:32,898 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:05:32,982 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:05:32,982 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1644894329] [2020-11-22 13:05:32,985 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2020-11-22 13:05:32,985 INFO L166 IcfgInterpreter]: Building call graph [2020-11-22 13:05:32,985 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-11-22 13:05:32,986 INFO L176 IcfgInterpreter]: Starting interpretation [2020-11-22 13:05:32,986 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-11-22 13:05:33,222 INFO L180 IcfgInterpreter]: Interpretation finished [2020-11-22 13:05:33,353 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 34 [2020-11-22 13:05:33,508 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 47 [2020-11-22 13:05:33,742 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 33 [2020-11-22 13:05:33,743 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-22 13:05:33,743 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-11-22 13:05:33,744 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2020-11-22 13:05:33,744 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885045926] [2020-11-22 13:05:33,744 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-11-22 13:05:33,744 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:05:33,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-11-22 13:05:33,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2020-11-22 13:05:33,746 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand 13 states. [2020-11-22 13:05:33,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:05:33,992 INFO L93 Difference]: Finished difference Result 11 states and 12 transitions. [2020-11-22 13:05:33,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-22 13:05:33,992 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 8 [2020-11-22 13:05:33,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:05:33,993 INFO L225 Difference]: With dead ends: 11 [2020-11-22 13:05:33,993 INFO L226 Difference]: Without dead ends: 0 [2020-11-22 13:05:33,994 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 10 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=110, Invalid=396, Unknown=0, NotChecked=0, Total=506 [2020-11-22 13:05:33,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-22 13:05:33,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-22 13:05:33,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-22 13:05:33,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-22 13:05:33,995 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 8 [2020-11-22 13:05:33,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:05:33,995 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-22 13:05:33,995 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-11-22 13:05:33,995 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-22 13:05:33,995 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-22 13:05:34,196 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2020-11-22 13:05:34,197 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-22 13:05:34,238 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-22 13:05:34,238 INFO L277 CegarLoopResult]: At program point L36(lines 24 37) the Hoare annotation is: true [2020-11-22 13:05:34,238 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-22 13:05:34,239 INFO L274 CegarLoopResult]: For program point L28(line 28) no Hoare annotation was computed. [2020-11-22 13:05:34,239 INFO L270 CegarLoopResult]: At program point L30-2(lines 30 34) the Hoare annotation is: (let ((.cse0 (+ ULTIMATE.start_main_~lo~0 (* 2 ULTIMATE.start_main_~mid~0)))) (and (<= .cse0 ULTIMATE.start_main_~hi~0) (<= ULTIMATE.start_main_~lo~0 ULTIMATE.start_main_~hi~0) (<= ULTIMATE.start_main_~hi~0 .cse0))) [2020-11-22 13:05:34,239 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-11-22 13:05:34,239 INFO L274 CegarLoopResult]: For program point L18(lines 18 20) no Hoare annotation was computed. [2020-11-22 13:05:34,239 INFO L277 CegarLoopResult]: At program point L18-2(lines 17 22) the Hoare annotation is: true [2020-11-22 13:05:34,239 INFO L274 CegarLoopResult]: For program point L12(line 12) no Hoare annotation was computed. [2020-11-22 13:05:34,239 INFO L274 CegarLoopResult]: For program point L12-2(line 12) no Hoare annotation was computed. [2020-11-22 13:05:34,239 INFO L274 CegarLoopResult]: For program point L12-3(line 12) no Hoare annotation was computed. [2020-11-22 13:05:34,252 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 01:05:34 BoogieIcfgContainer [2020-11-22 13:05:34,252 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-22 13:05:34,252 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-22 13:05:34,252 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-22 13:05:34,253 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-22 13:05:34,253 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:05:30" (3/4) ... [2020-11-22 13:05:34,258 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-22 13:05:34,266 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2020-11-22 13:05:34,267 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2020-11-22 13:05:34,267 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-22 13:05:34,267 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-22 13:05:34,303 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_5ff3812e-1474-42f0-8e28-60e178ecc2c7/bin/utaipan/witness.graphml [2020-11-22 13:05:34,303 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-22 13:05:34,305 INFO L168 Benchmark]: Toolchain (without parser) took 4699.86 ms. Allocated memory was 130.0 MB in the beginning and 157.3 MB in the end (delta: 27.3 MB). Free memory was 99.9 MB in the beginning and 114.9 MB in the end (delta: -15.0 MB). Peak memory consumption was 12.2 MB. Max. memory is 16.1 GB. [2020-11-22 13:05:34,305 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 86.0 MB. Free memory was 42.8 MB in the beginning and 42.8 MB in the end (delta: 75.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 13:05:34,306 INFO L168 Benchmark]: CACSL2BoogieTranslator took 224.19 ms. Allocated memory is still 130.0 MB. Free memory was 99.9 MB in the beginning and 107.4 MB in the end (delta: -7.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-22 13:05:34,306 INFO L168 Benchmark]: Boogie Procedure Inliner took 28.22 ms. Allocated memory is still 130.0 MB. Free memory was 107.4 MB in the beginning and 106.1 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 13:05:34,307 INFO L168 Benchmark]: Boogie Preprocessor took 18.28 ms. Allocated memory is still 130.0 MB. Free memory was 106.1 MB in the beginning and 105.3 MB in the end (delta: 812.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 13:05:34,307 INFO L168 Benchmark]: RCFGBuilder took 334.19 ms. Allocated memory is still 130.0 MB. Free memory was 105.3 MB in the beginning and 91.5 MB in the end (delta: 13.8 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-11-22 13:05:34,308 INFO L168 Benchmark]: TraceAbstraction took 4028.05 ms. Allocated memory was 130.0 MB in the beginning and 157.3 MB in the end (delta: 27.3 MB). Free memory was 91.5 MB in the beginning and 117.0 MB in the end (delta: -25.5 MB). Peak memory consumption was 4.7 MB. Max. memory is 16.1 GB. [2020-11-22 13:05:34,309 INFO L168 Benchmark]: Witness Printer took 51.22 ms. Allocated memory is still 157.3 MB. Free memory was 117.0 MB in the beginning and 114.9 MB in the end (delta: 2.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 13:05:34,311 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 86.0 MB. Free memory was 42.8 MB in the beginning and 42.8 MB in the end (delta: 75.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 224.19 ms. Allocated memory is still 130.0 MB. Free memory was 99.9 MB in the beginning and 107.4 MB in the end (delta: -7.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 28.22 ms. Allocated memory is still 130.0 MB. Free memory was 107.4 MB in the beginning and 106.1 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 18.28 ms. Allocated memory is still 130.0 MB. Free memory was 106.1 MB in the beginning and 105.3 MB in the end (delta: 812.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 334.19 ms. Allocated memory is still 130.0 MB. Free memory was 105.3 MB in the beginning and 91.5 MB in the end (delta: 13.8 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4028.05 ms. Allocated memory was 130.0 MB in the beginning and 157.3 MB in the end (delta: 27.3 MB). Free memory was 91.5 MB in the beginning and 117.0 MB in the end (delta: -25.5 MB). Peak memory consumption was 4.7 MB. Max. memory is 16.1 GB. * Witness Printer took 51.22 ms. Allocated memory is still 157.3 MB. Free memory was 117.0 MB in the beginning and 114.9 MB in the end (delta: 2.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 12]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 30]: Loop Invariant Derived loop invariant: (lo + 2 * mid <= hi && lo <= hi) && hi <= lo + 2 * mid - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.8s, OverallIterations: 3, TraceHistogramMax: 2, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 17 SDtfs, 13 SDslu, 34 SDs, 0 SdLazy, 60 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 62 GetRequests, 21 SyntacticMatches, 5 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 1.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11occurred 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, 3 LocationsWithAnnotation, 3 PreInvPairs, 8 NumberOfFragments, 20 HoareAnnotationTreeSize, 3 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 93 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 36 NumberOfCodeBlocks, 36 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 44 ConstructedInterpolants, 0 QuantifiedInterpolants, 1816 SizeOfPredicates, 12 NumberOfNonLiveVariables, 105 ConjunctsInSsa, 34 ConjunctsInUnsatCore, 7 InterpolantComputations, 1 PerfectInterpolantSequences, 0/12 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...