./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-invariants/bin-suffix-5.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_b7273773-78c3-4ffb-9c71-ebc0bff7f278/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_b7273773-78c3-4ffb-9c71-ebc0bff7f278/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_b7273773-78c3-4ffb-9c71-ebc0bff7f278/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_b7273773-78c3-4ffb-9c71-ebc0bff7f278/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-invariants/bin-suffix-5.c -s /tmp/vcloud-vcloud-master/worker/run_dir_b7273773-78c3-4ffb-9c71-ebc0bff7f278/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_b7273773-78c3-4ffb-9c71-ebc0bff7f278/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 de7eb1b4edf01055c51816e5c7538789ce22635d ................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_b7273773-78c3-4ffb-9c71-ebc0bff7f278/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_b7273773-78c3-4ffb-9c71-ebc0bff7f278/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_b7273773-78c3-4ffb-9c71-ebc0bff7f278/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_b7273773-78c3-4ffb-9c71-ebc0bff7f278/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-invariants/bin-suffix-5.c -s /tmp/vcloud-vcloud-master/worker/run_dir_b7273773-78c3-4ffb-9c71-ebc0bff7f278/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_b7273773-78c3-4ffb-9c71-ebc0bff7f278/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 de7eb1b4edf01055c51816e5c7538789ce22635d ...................................................................................................................................................................................................................................................................................................................................... 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 05:35:15,383 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 05:35:15,384 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 05:35:15,419 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 05:35:15,419 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 05:35:15,423 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 05:35:15,425 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 05:35:15,426 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 05:35:15,428 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 05:35:15,429 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 05:35:15,430 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 05:35:15,431 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 05:35:15,431 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 05:35:15,432 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 05:35:15,433 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 05:35:15,434 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 05:35:15,435 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 05:35:15,436 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 05:35:15,437 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 05:35:15,439 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 05:35:15,440 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 05:35:15,442 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 05:35:15,443 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 05:35:15,443 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 05:35:15,446 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 05:35:15,446 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 05:35:15,447 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 05:35:15,447 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 05:35:15,448 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 05:35:15,449 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 05:35:15,449 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 05:35:15,450 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 05:35:15,450 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 05:35:15,451 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 05:35:15,452 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 05:35:15,452 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 05:35:15,453 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 05:35:15,453 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 05:35:15,453 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 05:35:15,454 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 05:35:15,454 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 05:35:15,455 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_b7273773-78c3-4ffb-9c71-ebc0bff7f278/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-12-09 05:35:15,471 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 05:35:15,472 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 05:35:15,472 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 05:35:15,472 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 05:35:15,472 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 05:35:15,473 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 05:35:15,473 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 05:35:15,473 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 05:35:15,473 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 05:35:15,473 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 05:35:15,473 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 05:35:15,473 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 05:35:15,473 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 05:35:15,473 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 05:35:15,474 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 05:35:15,474 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 05:35:15,474 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 05:35:15,474 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 05:35:15,474 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 05:35:15,474 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 05:35:15,475 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 05:35:15,475 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 05:35:15,475 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 05:35:15,475 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 05:35:15,475 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 05:35:15,475 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 05:35:15,475 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 05:35:15,475 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 05:35:15,475 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 05:35:15,476 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 05:35:15,476 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 05:35:15,476 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 05:35:15,476 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 05:35:15,476 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 05:35:15,476 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 05:35:15,476 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 05:35:15,476 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 05:35:15,476 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 05:35:15,477 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 05:35:15,477 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_b7273773-78c3-4ffb-9c71-ebc0bff7f278/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_b7273773-78c3-4ffb-9c71-ebc0bff7f278/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> de7eb1b4edf01055c51816e5c7538789ce22635d [2020-12-09 05:35:15,655 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 05:35:15,673 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 05:35:15,675 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 05:35:15,676 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 05:35:15,677 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 05:35:15,677 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_b7273773-78c3-4ffb-9c71-ebc0bff7f278/bin/utaipan/../../sv-benchmarks/c/loop-invariants/bin-suffix-5.c [2020-12-09 05:35:15,723 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_b7273773-78c3-4ffb-9c71-ebc0bff7f278/bin/utaipan/data/3252ea920/7219b5f92967404194fd266ed79b5692/FLAG17ba7897a [2020-12-09 05:35:16,076 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 05:35:16,077 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_b7273773-78c3-4ffb-9c71-ebc0bff7f278/sv-benchmarks/c/loop-invariants/bin-suffix-5.c [2020-12-09 05:35:16,082 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_b7273773-78c3-4ffb-9c71-ebc0bff7f278/bin/utaipan/data/3252ea920/7219b5f92967404194fd266ed79b5692/FLAG17ba7897a [2020-12-09 05:35:16,094 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_b7273773-78c3-4ffb-9c71-ebc0bff7f278/bin/utaipan/data/3252ea920/7219b5f92967404194fd266ed79b5692 [2020-12-09 05:35:16,096 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 05:35:16,097 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 05:35:16,098 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 05:35:16,098 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 05:35:16,100 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 05:35:16,101 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 05:35:16" (1/1) ... [2020-12-09 05:35:16,102 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@506e21d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:35:16, skipping insertion in model container [2020-12-09 05:35:16,102 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 05:35:16" (1/1) ... [2020-12-09 05:35:16,107 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 05:35:16,116 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 05:35:16,214 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_b7273773-78c3-4ffb-9c71-ebc0bff7f278/sv-benchmarks/c/loop-invariants/bin-suffix-5.c[359,372] [2020-12-09 05:35:16,228 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 05:35:16,234 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 05:35:16,242 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_b7273773-78c3-4ffb-9c71-ebc0bff7f278/sv-benchmarks/c/loop-invariants/bin-suffix-5.c[359,372] [2020-12-09 05:35:16,244 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 05:35:16,254 INFO L208 MainTranslator]: Completed translation [2020-12-09 05:35:16,254 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:35:16 WrapperNode [2020-12-09 05:35:16,254 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 05:35:16,255 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 05:35:16,255 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 05:35:16,255 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 05:35:16,262 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:35:16" (1/1) ... [2020-12-09 05:35:16,266 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:35:16" (1/1) ... [2020-12-09 05:35:16,278 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 05:35:16,278 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 05:35:16,278 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 05:35:16,279 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 05:35:16,284 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:35:16" (1/1) ... [2020-12-09 05:35:16,284 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:35:16" (1/1) ... [2020-12-09 05:35:16,285 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:35:16" (1/1) ... [2020-12-09 05:35:16,285 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:35:16" (1/1) ... [2020-12-09 05:35:16,288 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:35:16" (1/1) ... [2020-12-09 05:35:16,290 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:35:16" (1/1) ... [2020-12-09 05:35:16,291 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:35:16" (1/1) ... [2020-12-09 05:35:16,292 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 05:35:16,292 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 05:35:16,292 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 05:35:16,293 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 05:35:16,293 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:35:16" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b7273773-78c3-4ffb-9c71-ebc0bff7f278/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 05:35:16,355 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 05:35:16,356 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 05:35:16,356 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-09 05:35:16,356 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 05:35:16,494 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 05:35:16,494 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2020-12-09 05:35:16,496 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 05:35:16 BoogieIcfgContainer [2020-12-09 05:35:16,496 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 05:35:16,497 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 05:35:16,497 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 05:35:16,500 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 05:35:16,500 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 05:35:16" (1/3) ... [2020-12-09 05:35:16,500 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52b8b71f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 05:35:16, skipping insertion in model container [2020-12-09 05:35:16,500 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:35:16" (2/3) ... [2020-12-09 05:35:16,501 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52b8b71f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 05:35:16, skipping insertion in model container [2020-12-09 05:35:16,501 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 05:35:16" (3/3) ... [2020-12-09 05:35:16,502 INFO L111 eAbstractionObserver]: Analyzing ICFG bin-suffix-5.c [2020-12-09 05:35:16,512 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 05:35:16,514 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-09 05:35:16,521 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-09 05:35:16,538 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 05:35:16,538 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 05:35:16,538 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 05:35:16,538 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 05:35:16,538 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 05:35:16,538 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 05:35:16,538 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 05:35:16,538 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 05:35:16,547 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states. [2020-12-09 05:35:16,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-12-09 05:35:16,550 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:35:16,551 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-12-09 05:35:16,551 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 05:35:16,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:35:16,555 INFO L82 PathProgramCache]: Analyzing trace with hash 57691362, now seen corresponding path program 1 times [2020-12-09 05:35:16,562 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 05:35:16,562 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201945565] [2020-12-09 05:35:16,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 05:35:16,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:35:16,656 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 05:35:16,657 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201945565] [2020-12-09 05:35:16,657 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 05:35:16,658 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 05:35:16,658 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533520236] [2020-12-09 05:35:16,662 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-09 05:35:16,662 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 05:35:16,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-09 05:35:16,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-09 05:35:16,674 INFO L87 Difference]: Start difference. First operand 9 states. Second operand 2 states. [2020-12-09 05:35:16,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 05:35:16,686 INFO L93 Difference]: Finished difference Result 15 states and 17 transitions. [2020-12-09 05:35:16,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-09 05:35:16,688 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 5 [2020-12-09 05:35:16,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 05:35:16,696 INFO L225 Difference]: With dead ends: 15 [2020-12-09 05:35:16,696 INFO L226 Difference]: Without dead ends: 7 [2020-12-09 05:35:16,699 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-09 05:35:16,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2020-12-09 05:35:16,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2020-12-09 05:35:16,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2020-12-09 05:35:16,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2020-12-09 05:35:16,726 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 5 [2020-12-09 05:35:16,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 05:35:16,727 INFO L481 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2020-12-09 05:35:16,727 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-09 05:35:16,727 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2020-12-09 05:35:16,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-09 05:35:16,727 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:35:16,727 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-09 05:35:16,728 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-09 05:35:16,728 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 05:35:16,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:35:16,729 INFO L82 PathProgramCache]: Analyzing trace with hash 1781785905, now seen corresponding path program 1 times [2020-12-09 05:35:16,729 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 05:35:16,729 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176491944] [2020-12-09 05:35:16,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 05:35:16,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 05:35:16,757 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 05:35:16,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 05:35:16,775 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 05:35:16,792 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-12-09 05:35:16,792 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-09 05:35:16,793 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-09 05:35:16,811 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 05:35:16 BoogieIcfgContainer [2020-12-09 05:35:16,811 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 05:35:16,811 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 05:35:16,812 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 05:35:16,812 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 05:35:16,812 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 05:35:16" (3/4) ... [2020-12-09 05:35:16,815 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-09 05:35:16,815 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 05:35:16,817 INFO L168 Benchmark]: Toolchain (without parser) took 719.25 ms. Allocated memory is still 102.8 MB. Free memory was 66.5 MB in the beginning and 44.7 MB in the end (delta: 21.8 MB). Peak memory consumption was 20.6 MB. Max. memory is 16.1 GB. [2020-12-09 05:35:16,818 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 102.8 MB. Free memory was 82.7 MB in the beginning and 82.6 MB in the end (delta: 77.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 05:35:16,819 INFO L168 Benchmark]: CACSL2BoogieTranslator took 156.61 ms. Allocated memory is still 102.8 MB. Free memory was 66.3 MB in the beginning and 79.8 MB in the end (delta: -13.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-12-09 05:35:16,819 INFO L168 Benchmark]: Boogie Procedure Inliner took 22.77 ms. Allocated memory is still 102.8 MB. Free memory was 79.8 MB in the beginning and 78.6 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 05:35:16,820 INFO L168 Benchmark]: Boogie Preprocessor took 13.56 ms. Allocated memory is still 102.8 MB. Free memory was 78.6 MB in the beginning and 77.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 05:35:16,820 INFO L168 Benchmark]: RCFGBuilder took 203.83 ms. Allocated memory is still 102.8 MB. Free memory was 77.4 MB in the beginning and 65.2 MB in the end (delta: 12.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-12-09 05:35:16,821 INFO L168 Benchmark]: TraceAbstraction took 313.59 ms. Allocated memory is still 102.8 MB. Free memory was 64.8 MB in the beginning and 44.7 MB in the end (delta: 20.1 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. [2020-12-09 05:35:16,821 INFO L168 Benchmark]: Witness Printer took 3.73 ms. Allocated memory is still 102.8 MB. Free memory is still 44.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 05:35:16,825 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 102.8 MB. Free memory was 82.7 MB in the beginning and 82.6 MB in the end (delta: 77.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 156.61 ms. Allocated memory is still 102.8 MB. Free memory was 66.3 MB in the beginning and 79.8 MB in the end (delta: -13.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 22.77 ms. Allocated memory is still 102.8 MB. Free memory was 79.8 MB in the beginning and 78.6 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 13.56 ms. Allocated memory is still 102.8 MB. Free memory was 78.6 MB in the beginning and 77.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 203.83 ms. Allocated memory is still 102.8 MB. Free memory was 77.4 MB in the beginning and 65.2 MB in the end (delta: 12.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 313.59 ms. Allocated memory is still 102.8 MB. Free memory was 64.8 MB in the beginning and 44.7 MB in the end (delta: 20.1 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. * Witness Printer took 3.73 ms. Allocated memory is still 102.8 MB. Free memory is still 44.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 7]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseAnd at line 16. Possible FailurePath: [L12] unsigned int x = 5; [L13] COND FALSE !(__VERIFIER_nondet_int()) [L6] COND TRUE !(cond) [L7] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 9 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.2s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 9 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 11 NumberOfCodeBlocks, 11 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 4 ConstructedInterpolants, 0 QuantifiedInterpolants, 16 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 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 could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-7b2dab5 [2020-12-09 05:35:18,349 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 05:35:18,351 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 05:35:18,377 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 05:35:18,378 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 05:35:18,379 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 05:35:18,380 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 05:35:18,382 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 05:35:18,384 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 05:35:18,384 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 05:35:18,385 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 05:35:18,386 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 05:35:18,387 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 05:35:18,388 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 05:35:18,388 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 05:35:18,389 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 05:35:18,390 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 05:35:18,391 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 05:35:18,392 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 05:35:18,394 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 05:35:18,396 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 05:35:18,397 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 05:35:18,398 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 05:35:18,399 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 05:35:18,401 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 05:35:18,401 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 05:35:18,402 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 05:35:18,402 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 05:35:18,403 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 05:35:18,404 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 05:35:18,404 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 05:35:18,405 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 05:35:18,405 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 05:35:18,406 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 05:35:18,407 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 05:35:18,407 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 05:35:18,408 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 05:35:18,408 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 05:35:18,408 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 05:35:18,409 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 05:35:18,410 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 05:35:18,410 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_b7273773-78c3-4ffb-9c71-ebc0bff7f278/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2020-12-09 05:35:18,428 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 05:35:18,428 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 05:35:18,429 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 05:35:18,429 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 05:35:18,429 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 05:35:18,429 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 05:35:18,430 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 05:35:18,430 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 05:35:18,430 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 05:35:18,430 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 05:35:18,431 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 05:35:18,431 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 05:35:18,431 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 05:35:18,431 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 05:35:18,431 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 05:35:18,431 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 05:35:18,431 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 05:35:18,431 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-12-09 05:35:18,432 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-12-09 05:35:18,432 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 05:35:18,432 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 05:35:18,432 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 05:35:18,432 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 05:35:18,432 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 05:35:18,432 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-09 05:35:18,432 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 05:35:18,433 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 05:35:18,433 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 05:35:18,433 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 05:35:18,433 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 05:35:18,433 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-12-09 05:35:18,433 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2020-12-09 05:35:18,433 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 05:35:18,434 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 05:35:18,434 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 05:35:18,434 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_b7273773-78c3-4ffb-9c71-ebc0bff7f278/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_b7273773-78c3-4ffb-9c71-ebc0bff7f278/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> de7eb1b4edf01055c51816e5c7538789ce22635d [2020-12-09 05:35:18,652 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 05:35:18,668 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 05:35:18,670 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 05:35:18,670 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 05:35:18,671 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 05:35:18,672 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_b7273773-78c3-4ffb-9c71-ebc0bff7f278/bin/utaipan/../../sv-benchmarks/c/loop-invariants/bin-suffix-5.c [2020-12-09 05:35:18,720 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_b7273773-78c3-4ffb-9c71-ebc0bff7f278/bin/utaipan/data/e9930b963/ce28be10b4d74e139168e45e22589289/FLAG36908ad36 [2020-12-09 05:35:19,082 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 05:35:19,082 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_b7273773-78c3-4ffb-9c71-ebc0bff7f278/sv-benchmarks/c/loop-invariants/bin-suffix-5.c [2020-12-09 05:35:19,087 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_b7273773-78c3-4ffb-9c71-ebc0bff7f278/bin/utaipan/data/e9930b963/ce28be10b4d74e139168e45e22589289/FLAG36908ad36 [2020-12-09 05:35:19,100 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_b7273773-78c3-4ffb-9c71-ebc0bff7f278/bin/utaipan/data/e9930b963/ce28be10b4d74e139168e45e22589289 [2020-12-09 05:35:19,102 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 05:35:19,104 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 05:35:19,105 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 05:35:19,105 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 05:35:19,109 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 05:35:19,109 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 05:35:19" (1/1) ... [2020-12-09 05:35:19,111 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e89263c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:35:19, skipping insertion in model container [2020-12-09 05:35:19,111 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 05:35:19" (1/1) ... [2020-12-09 05:35:19,118 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 05:35:19,131 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 05:35:19,239 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_b7273773-78c3-4ffb-9c71-ebc0bff7f278/sv-benchmarks/c/loop-invariants/bin-suffix-5.c[359,372] [2020-12-09 05:35:19,247 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 05:35:19,259 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 05:35:19,271 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_b7273773-78c3-4ffb-9c71-ebc0bff7f278/sv-benchmarks/c/loop-invariants/bin-suffix-5.c[359,372] [2020-12-09 05:35:19,273 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 05:35:19,290 INFO L208 MainTranslator]: Completed translation [2020-12-09 05:35:19,290 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:35:19 WrapperNode [2020-12-09 05:35:19,291 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 05:35:19,292 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 05:35:19,292 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 05:35:19,294 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 05:35:19,301 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:35:19" (1/1) ... [2020-12-09 05:35:19,308 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:35:19" (1/1) ... [2020-12-09 05:35:19,322 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 05:35:19,323 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 05:35:19,323 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 05:35:19,323 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 05:35:19,331 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:35:19" (1/1) ... [2020-12-09 05:35:19,331 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:35:19" (1/1) ... [2020-12-09 05:35:19,333 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:35:19" (1/1) ... [2020-12-09 05:35:19,333 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:35:19" (1/1) ... [2020-12-09 05:35:19,337 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:35:19" (1/1) ... [2020-12-09 05:35:19,340 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:35:19" (1/1) ... [2020-12-09 05:35:19,342 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:35:19" (1/1) ... [2020-12-09 05:35:19,343 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 05:35:19,344 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 05:35:19,344 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 05:35:19,344 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 05:35:19,345 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:35:19" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b7273773-78c3-4ffb-9c71-ebc0bff7f278/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 05:35:19,408 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 05:35:19,409 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 05:35:19,409 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-12-09 05:35:19,409 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 05:35:19,549 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 05:35:19,549 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2020-12-09 05:35:19,550 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 05:35:19 BoogieIcfgContainer [2020-12-09 05:35:19,550 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 05:35:19,552 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 05:35:19,552 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 05:35:19,554 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 05:35:19,554 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 05:35:19" (1/3) ... [2020-12-09 05:35:19,555 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c0b763b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 05:35:19, skipping insertion in model container [2020-12-09 05:35:19,555 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:35:19" (2/3) ... [2020-12-09 05:35:19,555 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c0b763b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 05:35:19, skipping insertion in model container [2020-12-09 05:35:19,555 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 05:35:19" (3/3) ... [2020-12-09 05:35:19,556 INFO L111 eAbstractionObserver]: Analyzing ICFG bin-suffix-5.c [2020-12-09 05:35:19,567 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 05:35:19,569 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-09 05:35:19,578 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-09 05:35:19,602 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 05:35:19,602 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 05:35:19,602 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 05:35:19,602 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 05:35:19,603 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 05:35:19,603 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 05:35:19,603 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 05:35:19,603 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 05:35:19,612 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states. [2020-12-09 05:35:19,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-09 05:35:19,616 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:35:19,617 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-09 05:35:19,617 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 05:35:19,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:35:19,621 INFO L82 PathProgramCache]: Analyzing trace with hash 889633835, now seen corresponding path program 1 times [2020-12-09 05:35:19,630 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 05:35:19,631 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1728491989] [2020-12-09 05:35:19,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b7273773-78c3-4ffb-9c71-ebc0bff7f278/bin/utaipan/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-12-09 05:35:19,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:35:19,686 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-09 05:35:19,691 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 05:35:19,741 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 05:35:19,742 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 05:35:19,742 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1728491989] [2020-12-09 05:35:19,743 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 05:35:19,743 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 05:35:19,744 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060371145] [2020-12-09 05:35:19,748 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 05:35:19,748 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 05:35:19,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 05:35:19,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 05:35:19,759 INFO L87 Difference]: Start difference. First operand 11 states. Second operand 4 states. [2020-12-09 05:35:19,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 05:35:19,804 INFO L93 Difference]: Finished difference Result 26 states and 30 transitions. [2020-12-09 05:35:19,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 05:35:19,806 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2020-12-09 05:35:19,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 05:35:19,814 INFO L225 Difference]: With dead ends: 26 [2020-12-09 05:35:19,814 INFO L226 Difference]: Without dead ends: 8 [2020-12-09 05:35:19,817 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 05:35:19,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2020-12-09 05:35:19,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2020-12-09 05:35:19,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-12-09 05:35:19,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2020-12-09 05:35:19,846 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 6 [2020-12-09 05:35:19,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 05:35:19,846 INFO L481 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2020-12-09 05:35:19,846 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 05:35:19,846 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2020-12-09 05:35:19,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-09 05:35:19,847 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 05:35:19,847 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-09 05:35:20,048 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-12-09 05:35:20,048 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 05:35:20,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 05:35:20,049 INFO L82 PathProgramCache]: Analyzing trace with hash 1810510480, now seen corresponding path program 1 times [2020-12-09 05:35:20,050 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 05:35:20,050 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [293511905] [2020-12-09 05:35:20,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b7273773-78c3-4ffb-9c71-ebc0bff7f278/bin/utaipan/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-12-09 05:35:20,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 05:35:20,094 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-09 05:35:20,095 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 05:35:20,126 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 05:35:20,126 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 05:35:20,170 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-09 05:35:20,171 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [293511905] [2020-12-09 05:35:20,171 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-09 05:35:20,171 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2020-12-09 05:35:20,171 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175100534] [2020-12-09 05:35:20,173 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 05:35:20,173 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 05:35:20,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 05:35:20,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-12-09 05:35:20,175 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand 4 states. [2020-12-09 05:35:20,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 05:35:20,189 INFO L93 Difference]: Finished difference Result 8 states and 8 transitions. [2020-12-09 05:35:20,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 05:35:20,189 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-12-09 05:35:20,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 05:35:20,189 INFO L225 Difference]: With dead ends: 8 [2020-12-09 05:35:20,189 INFO L226 Difference]: Without dead ends: 0 [2020-12-09 05:35:20,190 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-12-09 05:35:20,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-09 05:35:20,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-09 05:35:20,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-09 05:35:20,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-09 05:35:20,191 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 7 [2020-12-09 05:35:20,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 05:35:20,192 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-09 05:35:20,192 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 05:35:20,192 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-09 05:35:20,192 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-09 05:35:20,393 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-12-09 05:35:20,398 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-09 05:35:20,484 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-09 05:35:20,485 INFO L265 CegarLoopResult]: At program point L17(lines 11 18) the Hoare annotation is: true [2020-12-09 05:35:20,485 INFO L258 CegarLoopResult]: At program point L13-2(lines 13 15) the Hoare annotation is: (= (_ bv5 32) (bvand (_ bv5 32) ULTIMATE.start_main_~x~0)) [2020-12-09 05:35:20,485 INFO L262 CegarLoopResult]: For program point L13-3(lines 13 15) no Hoare annotation was computed. [2020-12-09 05:35:20,485 INFO L262 CegarLoopResult]: For program point L7(line 7) no Hoare annotation was computed. [2020-12-09 05:35:20,485 INFO L262 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-12-09 05:35:20,485 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-09 05:35:20,485 INFO L262 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-12-09 05:35:20,486 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 7) no Hoare annotation was computed. [2020-12-09 05:35:20,486 INFO L262 CegarLoopResult]: For program point L6(lines 6 8) no Hoare annotation was computed. [2020-12-09 05:35:20,486 INFO L265 CegarLoopResult]: At program point L6-2(lines 5 10) the Hoare annotation is: true [2020-12-09 05:35:20,496 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 05:35:20 BoogieIcfgContainer [2020-12-09 05:35:20,496 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 05:35:20,497 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 05:35:20,497 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 05:35:20,497 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 05:35:20,497 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 05:35:19" (3/4) ... [2020-12-09 05:35:20,500 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-09 05:35:20,506 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2020-12-09 05:35:20,506 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-09 05:35:20,506 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-09 05:35:20,507 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-09 05:35:20,528 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_b7273773-78c3-4ffb-9c71-ebc0bff7f278/bin/utaipan/witness.graphml [2020-12-09 05:35:20,528 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 05:35:20,529 INFO L168 Benchmark]: Toolchain (without parser) took 1424.75 ms. Allocated memory was 60.8 MB in the beginning and 75.5 MB in the end (delta: 14.7 MB). Free memory was 40.4 MB in the beginning and 39.5 MB in the end (delta: 929.5 kB). Peak memory consumption was 15.5 MB. Max. memory is 16.1 GB. [2020-12-09 05:35:20,530 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 60.8 MB. Free memory was 43.7 MB in the beginning and 43.6 MB in the end (delta: 73.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 05:35:20,530 INFO L168 Benchmark]: CACSL2BoogieTranslator took 185.86 ms. Allocated memory is still 60.8 MB. Free memory was 40.2 MB in the beginning and 45.5 MB in the end (delta: -5.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-12-09 05:35:20,530 INFO L168 Benchmark]: Boogie Procedure Inliner took 30.87 ms. Allocated memory is still 60.8 MB. Free memory was 45.3 MB in the beginning and 44.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 05:35:20,531 INFO L168 Benchmark]: Boogie Preprocessor took 20.29 ms. Allocated memory is still 60.8 MB. Free memory was 44.0 MB in the beginning and 42.9 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 05:35:20,531 INFO L168 Benchmark]: RCFGBuilder took 206.46 ms. Allocated memory is still 60.8 MB. Free memory was 42.9 MB in the beginning and 32.2 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-12-09 05:35:20,532 INFO L168 Benchmark]: TraceAbstraction took 944.52 ms. Allocated memory was 60.8 MB in the beginning and 75.5 MB in the end (delta: 14.7 MB). Free memory was 31.8 MB in the beginning and 41.6 MB in the end (delta: -9.8 MB). Peak memory consumption was 8.1 MB. Max. memory is 16.1 GB. [2020-12-09 05:35:20,532 INFO L168 Benchmark]: Witness Printer took 31.42 ms. Allocated memory is still 75.5 MB. Free memory was 41.6 MB in the beginning and 39.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 05:35:20,534 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 60.8 MB. Free memory was 43.7 MB in the beginning and 43.6 MB in the end (delta: 73.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 185.86 ms. Allocated memory is still 60.8 MB. Free memory was 40.2 MB in the beginning and 45.5 MB in the end (delta: -5.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 30.87 ms. Allocated memory is still 60.8 MB. Free memory was 45.3 MB in the beginning and 44.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 20.29 ms. Allocated memory is still 60.8 MB. Free memory was 44.0 MB in the beginning and 42.9 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 206.46 ms. Allocated memory is still 60.8 MB. Free memory was 42.9 MB in the beginning and 32.2 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 944.52 ms. Allocated memory was 60.8 MB in the beginning and 75.5 MB in the end (delta: 14.7 MB). Free memory was 31.8 MB in the beginning and 41.6 MB in the end (delta: -9.8 MB). Peak memory consumption was 8.1 MB. Max. memory is 16.1 GB. * Witness Printer took 31.42 ms. Allocated memory is still 75.5 MB. Free memory was 41.6 MB in the beginning and 39.5 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: 7]: 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: 13]: Loop Invariant Derived loop invariant: 5bv32 == ~bvand32(5bv32, x) - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 5]: 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: 0.7s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 11 SDtfs, 10 SDslu, 19 SDs, 0 SdLazy, 12 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 8 NumberOfFragments, 7 HoareAnnotationTreeSize, 3 FomulaSimplifications, 10 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 13 NumberOfCodeBlocks, 13 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 17 ConstructedInterpolants, 0 QuantifiedInterpolants, 311 SizeOfPredicates, 4 NumberOfNonLiveVariables, 56 ConjunctsInSsa, 9 ConjunctsInUnsatCore, 3 InterpolantComputations, 2 PerfectInterpolantSequences, 1/2 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...