./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-regression/test24-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_d99528f1-097a-4fb6-8f29-a6b9e566e5ed/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_d99528f1-097a-4fb6-8f29-a6b9e566e5ed/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_d99528f1-097a-4fb6-8f29-a6b9e566e5ed/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_d99528f1-097a-4fb6-8f29-a6b9e566e5ed/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-regression/test24-1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_d99528f1-097a-4fb6-8f29-a6b9e566e5ed/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_d99528f1-097a-4fb6-8f29-a6b9e566e5ed/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 043660dc5a969bbd34b12cbb93ba3e467b4f8613 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-12-07 16:00:58,474 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 16:00:58,476 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 16:00:58,483 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 16:00:58,483 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 16:00:58,484 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 16:00:58,485 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 16:00:58,486 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 16:00:58,487 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 16:00:58,488 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 16:00:58,489 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 16:00:58,490 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 16:00:58,490 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 16:00:58,491 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 16:00:58,491 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 16:00:58,492 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 16:00:58,493 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 16:00:58,493 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 16:00:58,495 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 16:00:58,496 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 16:00:58,497 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 16:00:58,498 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 16:00:58,499 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 16:00:58,499 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 16:00:58,501 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 16:00:58,501 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 16:00:58,501 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 16:00:58,502 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 16:00:58,502 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 16:00:58,503 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 16:00:58,503 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 16:00:58,503 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 16:00:58,504 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 16:00:58,504 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 16:00:58,505 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 16:00:58,505 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 16:00:58,505 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 16:00:58,505 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 16:00:58,505 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 16:00:58,506 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 16:00:58,506 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 16:00:58,507 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_d99528f1-097a-4fb6-8f29-a6b9e566e5ed/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-12-07 16:00:58,517 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 16:00:58,517 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 16:00:58,518 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-12-07 16:00:58,518 INFO L138 SettingsManager]: * User list type=DISABLED [2019-12-07 16:00:58,518 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-12-07 16:00:58,518 INFO L138 SettingsManager]: * Explicit value domain=true [2019-12-07 16:00:58,518 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-12-07 16:00:58,518 INFO L138 SettingsManager]: * Octagon Domain=false [2019-12-07 16:00:58,518 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-12-07 16:00:58,519 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-12-07 16:00:58,519 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-12-07 16:00:58,519 INFO L138 SettingsManager]: * Interval Domain=false [2019-12-07 16:00:58,519 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-12-07 16:00:58,519 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-12-07 16:00:58,519 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-12-07 16:00:58,520 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 16:00:58,520 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 16:00:58,520 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 16:00:58,520 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 16:00:58,520 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 16:00:58,520 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 16:00:58,520 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 16:00:58,520 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 16:00:58,521 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-12-07 16:00:58,521 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 16:00:58,521 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 16:00:58,521 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 16:00:58,521 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 16:00:58,521 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 16:00:58,521 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 16:00:58,521 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 16:00:58,521 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 16:00:58,522 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 16:00:58,522 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 16:00:58,522 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 16:00:58,522 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-12-07 16:00:58,522 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 16:00:58,522 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 16:00:58,522 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 16:00:58,522 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-07 16:00:58,522 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_d99528f1-097a-4fb6-8f29-a6b9e566e5ed/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(__VERIFIER_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 -> 043660dc5a969bbd34b12cbb93ba3e467b4f8613 [2019-12-07 16:00:58,628 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 16:00:58,636 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 16:00:58,639 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 16:00:58,640 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 16:00:58,640 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 16:00:58,641 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_d99528f1-097a-4fb6-8f29-a6b9e566e5ed/bin/utaipan/../../sv-benchmarks/c/ldv-regression/test24-1.c [2019-12-07 16:00:58,685 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d99528f1-097a-4fb6-8f29-a6b9e566e5ed/bin/utaipan/data/dcb5c8f6c/9e5a32eb885a4461b698603f8f191e07/FLAG1797e5272 [2019-12-07 16:00:59,008 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 16:00:59,008 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_d99528f1-097a-4fb6-8f29-a6b9e566e5ed/sv-benchmarks/c/ldv-regression/test24-1.c [2019-12-07 16:00:59,012 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d99528f1-097a-4fb6-8f29-a6b9e566e5ed/bin/utaipan/data/dcb5c8f6c/9e5a32eb885a4461b698603f8f191e07/FLAG1797e5272 [2019-12-07 16:00:59,021 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_d99528f1-097a-4fb6-8f29-a6b9e566e5ed/bin/utaipan/data/dcb5c8f6c/9e5a32eb885a4461b698603f8f191e07 [2019-12-07 16:00:59,023 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 16:00:59,024 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 16:00:59,025 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 16:00:59,025 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 16:00:59,027 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 16:00:59,028 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 04:00:59" (1/1) ... [2019-12-07 16:00:59,029 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5575fbb4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:00:59, skipping insertion in model container [2019-12-07 16:00:59,030 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 04:00:59" (1/1) ... [2019-12-07 16:00:59,034 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 16:00:59,045 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 16:00:59,190 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 16:00:59,195 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 16:00:59,207 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 16:00:59,216 INFO L208 MainTranslator]: Completed translation [2019-12-07 16:00:59,217 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:00:59 WrapperNode [2019-12-07 16:00:59,217 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 16:00:59,217 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 16:00:59,217 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 16:00:59,218 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 16:00:59,223 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:00:59" (1/1) ... [2019-12-07 16:00:59,228 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:00:59" (1/1) ... [2019-12-07 16:00:59,240 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 16:00:59,240 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 16:00:59,240 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 16:00:59,240 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 16:00:59,246 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:00:59" (1/1) ... [2019-12-07 16:00:59,247 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:00:59" (1/1) ... [2019-12-07 16:00:59,248 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:00:59" (1/1) ... [2019-12-07 16:00:59,248 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:00:59" (1/1) ... [2019-12-07 16:00:59,251 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:00:59" (1/1) ... [2019-12-07 16:00:59,253 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:00:59" (1/1) ... [2019-12-07 16:00:59,254 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:00:59" (1/1) ... [2019-12-07 16:00:59,255 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 16:00:59,256 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 16:00:59,256 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 16:00:59,256 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 16:00:59,256 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:00:59" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d99528f1-097a-4fb6-8f29-a6b9e566e5ed/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 [2019-12-07 16:00:59,295 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-12-07 16:00:59,296 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 16:00:59,296 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 16:00:59,296 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-12-07 16:00:59,296 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-07 16:00:59,296 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-07 16:00:59,433 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 16:00:59,433 INFO L287 CfgBuilder]: Removed 7 assume(true) statements. [2019-12-07 16:00:59,434 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 04:00:59 BoogieIcfgContainer [2019-12-07 16:00:59,434 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 16:00:59,434 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 16:00:59,435 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 16:00:59,436 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 16:00:59,436 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 04:00:59" (1/3) ... [2019-12-07 16:00:59,437 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17945a89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 04:00:59, skipping insertion in model container [2019-12-07 16:00:59,437 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 04:00:59" (2/3) ... [2019-12-07 16:00:59,437 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17945a89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 04:00:59, skipping insertion in model container [2019-12-07 16:00:59,437 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 04:00:59" (3/3) ... [2019-12-07 16:00:59,438 INFO L109 eAbstractionObserver]: Analyzing ICFG test24-1.c [2019-12-07 16:00:59,445 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 16:00:59,448 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-07 16:00:59,455 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-12-07 16:00:59,470 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 16:00:59,470 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 16:00:59,470 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 16:00:59,470 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 16:00:59,470 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 16:00:59,470 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 16:00:59,471 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 16:00:59,471 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 16:00:59,479 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states. [2019-12-07 16:00:59,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-12-07 16:00:59,483 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 16:00:59,484 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-12-07 16:00:59,484 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 16:00:59,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 16:00:59,488 INFO L82 PathProgramCache]: Analyzing trace with hash 1951943614, now seen corresponding path program 1 times [2019-12-07 16:00:59,494 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 16:00:59,494 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546108738] [2019-12-07 16:00:59,495 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 16:00:59,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 16:00:59,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 16:00:59,579 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546108738] [2019-12-07 16:00:59,580 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 16:00:59,580 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 16:00:59,580 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797124163] [2019-12-07 16:00:59,583 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-12-07 16:00:59,583 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 16:00:59,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-12-07 16:00:59,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-12-07 16:00:59,593 INFO L87 Difference]: Start difference. First operand 11 states. Second operand 2 states. [2019-12-07 16:00:59,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 16:00:59,604 INFO L93 Difference]: Finished difference Result 18 states and 21 transitions. [2019-12-07 16:00:59,604 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-12-07 16:00:59,605 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2019-12-07 16:00:59,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 16:00:59,610 INFO L225 Difference]: With dead ends: 18 [2019-12-07 16:00:59,611 INFO L226 Difference]: Without dead ends: 8 [2019-12-07 16:00:59,613 INFO L630 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 [2019-12-07 16:00:59,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2019-12-07 16:00:59,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2019-12-07 16:00:59,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2019-12-07 16:00:59,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2019-12-07 16:00:59,633 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 6 [2019-12-07 16:00:59,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 16:00:59,633 INFO L462 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2019-12-07 16:00:59,634 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-12-07 16:00:59,634 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2019-12-07 16:00:59,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-12-07 16:00:59,634 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 16:00:59,634 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-12-07 16:00:59,634 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 16:00:59,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 16:00:59,634 INFO L82 PathProgramCache]: Analyzing trace with hash 373513706, now seen corresponding path program 1 times [2019-12-07 16:00:59,635 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 16:00:59,635 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697939655] [2019-12-07 16:00:59,635 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 16:00:59,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 16:00:59,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 16:00:59,700 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697939655] [2019-12-07 16:00:59,700 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 16:00:59,700 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-12-07 16:00:59,700 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11889034] [2019-12-07 16:00:59,701 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 16:00:59,701 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 16:00:59,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 16:00:59,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-07 16:00:59,702 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand 4 states. [2019-12-07 16:00:59,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 16:00:59,730 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2019-12-07 16:00:59,730 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 16:00:59,730 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2019-12-07 16:00:59,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 16:00:59,731 INFO L225 Difference]: With dead ends: 14 [2019-12-07 16:00:59,731 INFO L226 Difference]: Without dead ends: 10 [2019-12-07 16:00:59,731 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-12-07 16:00:59,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2019-12-07 16:00:59,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2019-12-07 16:00:59,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2019-12-07 16:00:59,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2019-12-07 16:00:59,734 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 7 [2019-12-07 16:00:59,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 16:00:59,734 INFO L462 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2019-12-07 16:00:59,734 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 16:00:59,734 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2019-12-07 16:00:59,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-12-07 16:00:59,734 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 16:00:59,734 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 16:00:59,735 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 16:00:59,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 16:00:59,735 INFO L82 PathProgramCache]: Analyzing trace with hash -1799502843, now seen corresponding path program 1 times [2019-12-07 16:00:59,735 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 16:00:59,735 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072931188] [2019-12-07 16:00:59,735 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 16:00:59,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 16:00:59,793 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 16:00:59,794 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072931188] [2019-12-07 16:00:59,794 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1803787936] [2019-12-07 16:00:59,794 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d99528f1-097a-4fb6-8f29-a6b9e566e5ed/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 [2019-12-07 16:00:59,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 16:00:59,829 INFO L264 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 12 conjunts are in the unsatisfiable core [2019-12-07 16:00:59,833 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 16:00:59,897 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2019-12-07 16:00:59,898 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-12-07 16:00:59,900 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 16:00:59,900 INFO L534 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-12-07 16:00:59,901 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:17, output treesize:5 [2019-12-07 16:00:59,902 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 16:00:59,903 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 16:00:59,931 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 16:00:59,931 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1259919138] [2019-12-07 16:00:59,952 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2019-12-07 16:00:59,952 INFO L166 IcfgInterpreter]: Building call graph [2019-12-07 16:00:59,957 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-12-07 16:00:59,963 INFO L176 IcfgInterpreter]: Starting interpretation [2019-12-07 16:00:59,963 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-12-07 16:01:00,179 INFO L180 IcfgInterpreter]: Interpretation finished [2019-12-07 16:01:00,510 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-12-07 16:01:00,510 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-12-07 16:01:00,511 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 10 [2019-12-07 16:01:00,511 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514245025] [2019-12-07 16:01:00,511 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-12-07 16:01:00,511 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 16:01:00,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-12-07 16:01:00,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2019-12-07 16:01:00,512 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand 10 states. [2019-12-07 16:01:00,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 16:01:00,581 INFO L93 Difference]: Finished difference Result 20 states and 22 transitions. [2019-12-07 16:01:00,581 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-12-07 16:01:00,581 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 9 [2019-12-07 16:01:00,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 16:01:00,582 INFO L225 Difference]: With dead ends: 20 [2019-12-07 16:01:00,582 INFO L226 Difference]: Without dead ends: 16 [2019-12-07 16:01:00,583 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 15 SyntacticMatches, 4 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2019-12-07 16:01:00,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2019-12-07 16:01:00,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2019-12-07 16:01:00,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-12-07 16:01:00,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2019-12-07 16:01:00,586 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 9 [2019-12-07 16:01:00,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 16:01:00,586 INFO L462 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2019-12-07 16:01:00,587 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-12-07 16:01:00,587 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2019-12-07 16:01:00,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-12-07 16:01:00,587 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 16:01:00,588 INFO L410 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1] [2019-12-07 16:01:00,788 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 16:01:00,789 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 16:01:00,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 16:01:00,789 INFO L82 PathProgramCache]: Analyzing trace with hash 963188182, now seen corresponding path program 2 times [2019-12-07 16:01:00,790 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 16:01:00,790 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732693934] [2019-12-07 16:01:00,790 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 16:01:00,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 16:01:00,914 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 16:01:00,914 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732693934] [2019-12-07 16:01:00,914 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [377872595] [2019-12-07 16:01:00,914 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d99528f1-097a-4fb6-8f29-a6b9e566e5ed/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 [2019-12-07 16:01:00,948 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-12-07 16:01:00,948 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 16:01:00,950 INFO L264 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 28 conjunts are in the unsatisfiable core [2019-12-07 16:01:00,951 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 16:01:01,099 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-12-07 16:01:01,099 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 16:01:01,256 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-12-07 16:01:01,256 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1304029778] [2019-12-07 16:01:01,257 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2019-12-07 16:01:01,257 INFO L166 IcfgInterpreter]: Building call graph [2019-12-07 16:01:01,258 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-12-07 16:01:01,258 INFO L176 IcfgInterpreter]: Starting interpretation [2019-12-07 16:01:01,258 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-12-07 16:01:01,357 INFO L180 IcfgInterpreter]: Interpretation finished [2019-12-07 16:01:01,804 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-12-07 16:01:01,804 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-12-07 16:01:01,804 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 21 [2019-12-07 16:01:01,804 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035276191] [2019-12-07 16:01:01,805 INFO L442 AbstractCegarLoop]: Interpolant automaton has 21 states [2019-12-07 16:01:01,805 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 16:01:01,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2019-12-07 16:01:01,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=512, Unknown=0, NotChecked=0, Total=600 [2019-12-07 16:01:01,806 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 21 states. [2019-12-07 16:01:02,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 16:01:02,533 INFO L93 Difference]: Finished difference Result 20 states and 21 transitions. [2019-12-07 16:01:02,534 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-12-07 16:01:02,534 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 15 [2019-12-07 16:01:02,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 16:01:02,534 INFO L225 Difference]: With dead ends: 20 [2019-12-07 16:01:02,534 INFO L226 Difference]: Without dead ends: 0 [2019-12-07 16:01:02,535 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 23 SyntacticMatches, 6 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 386 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=275, Invalid=1131, Unknown=0, NotChecked=0, Total=1406 [2019-12-07 16:01:02,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-12-07 16:01:02,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-12-07 16:01:02,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-12-07 16:01:02,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-12-07 16:01:02,535 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2019-12-07 16:01:02,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 16:01:02,536 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 16:01:02,536 INFO L463 AbstractCegarLoop]: Interpolant automaton has 21 states. [2019-12-07 16:01:02,536 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-12-07 16:01:02,536 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-12-07 16:01:02,736 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 16:01:02,739 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-12-07 16:01:02,800 INFO L246 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-12-07 16:01:02,800 INFO L246 CegarLoopResult]: For program point L29(lines 29 31) no Hoare annotation was computed. [2019-12-07 16:01:02,800 INFO L246 CegarLoopResult]: For program point L21(lines 21 32) no Hoare annotation was computed. [2019-12-07 16:01:02,800 INFO L246 CegarLoopResult]: For program point L21-2(lines 21 32) no Hoare annotation was computed. [2019-12-07 16:01:02,801 INFO L242 CegarLoopResult]: At program point L30(lines 15 38) the Hoare annotation is: false [2019-12-07 16:01:02,801 INFO L246 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-12-07 16:01:02,801 INFO L246 CegarLoopResult]: For program point L26-1(lines 26 28) no Hoare annotation was computed. [2019-12-07 16:01:02,801 INFO L246 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 36) no Hoare annotation was computed. [2019-12-07 16:01:02,801 INFO L242 CegarLoopResult]: At program point L26-3(lines 26 28) the Hoare annotation is: (and (= (mod (+ (* |ULTIMATE.start_main_~#ad1~0.offset| 7) ULTIMATE.start_main_~pa~0.offset) 8) 0) (let ((.cse0 (div (+ (* |ULTIMATE.start_main_~#ad1~0.offset| (- 1)) ULTIMATE.start_main_~pa~0.offset) 8))) (= (select (select |#memory_int| |ULTIMATE.start_main_~#ad1~0.base|) (+ |ULTIMATE.start_main_~#ad1~0.offset| (* .cse0 8))) .cse0)) (<= ULTIMATE.start_main_~i~0 (select (select |#memory_int| ULTIMATE.start_main_~pa~0.base) ULTIMATE.start_main_~pa~0.offset)) (= ULTIMATE.start_main_~pa~0.base |ULTIMATE.start_main_~#ad1~0.base|)) [2019-12-07 16:01:02,801 INFO L242 CegarLoopResult]: At program point L26-4(lines 26 28) the Hoare annotation is: (and (= (mod (+ (* |ULTIMATE.start_main_~#ad1~0.offset| 7) ULTIMATE.start_main_~pa~0.offset) 8) 0) (let ((.cse0 (div (+ (* |ULTIMATE.start_main_~#ad1~0.offset| (- 1)) ULTIMATE.start_main_~pa~0.offset) 8))) (= (select (select |#memory_int| |ULTIMATE.start_main_~#ad1~0.base|) (+ |ULTIMATE.start_main_~#ad1~0.offset| (* .cse0 8))) .cse0)) (<= ULTIMATE.start_main_~i~0 (select (select |#memory_int| ULTIMATE.start_main_~pa~0.base) ULTIMATE.start_main_~pa~0.offset)) (exists ((ULTIMATE.start_main_~pa~0.offset Int)) (let ((.cse2 (select |#memory_int| |ULTIMATE.start_main_~#ad1~0.base|))) (let ((.cse1 (select .cse2 ULTIMATE.start_main_~pa~0.offset))) (and (<= .cse1 ULTIMATE.start_main_~i~0) (= (mod (+ (* |ULTIMATE.start_main_~#ad1~0.offset| 7) ULTIMATE.start_main_~pa~0.offset) 8) 0) (<= ULTIMATE.start_main_~i~0 .cse1) (let ((.cse3 (div (+ (* |ULTIMATE.start_main_~#ad1~0.offset| (- 1)) ULTIMATE.start_main_~pa~0.offset) 8))) (= (select .cse2 (+ |ULTIMATE.start_main_~#ad1~0.offset| (* .cse3 8))) .cse3)))))) (= ULTIMATE.start_main_~pa~0.base |ULTIMATE.start_main_~#ad1~0.base|)) [2019-12-07 16:01:02,801 INFO L249 CegarLoopResult]: At program point L37(lines 14 38) the Hoare annotation is: true [2019-12-07 16:01:02,809 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~pa~0.offset,QUANTIFIED] [2019-12-07 16:01:02,810 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~pa~0.offset,QUANTIFIED] [2019-12-07 16:01:02,810 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~pa~0.offset,QUANTIFIED] [2019-12-07 16:01:02,810 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~pa~0.offset,QUANTIFIED] [2019-12-07 16:01:02,810 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~pa~0.offset,QUANTIFIED] [2019-12-07 16:01:02,812 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-12-07 16:01:02,812 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-12-07 16:01:02,813 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-12-07 16:01:02,813 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-12-07 16:01:02,813 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-12-07 16:01:02,818 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~pa~0.offset,QUANTIFIED] [2019-12-07 16:01:02,818 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~pa~0.offset,QUANTIFIED] [2019-12-07 16:01:02,818 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~pa~0.offset,QUANTIFIED] [2019-12-07 16:01:02,818 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~pa~0.offset,QUANTIFIED] [2019-12-07 16:01:02,818 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~pa~0.offset,QUANTIFIED] [2019-12-07 16:01:02,819 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-12-07 16:01:02,819 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-12-07 16:01:02,820 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-12-07 16:01:02,820 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-12-07 16:01:02,820 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-12-07 16:01:02,821 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-12-07 16:01:02,822 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-12-07 16:01:02,822 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-12-07 16:01:02,823 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-12-07 16:01:02,825 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 04:01:02 BoogieIcfgContainer [2019-12-07 16:01:02,825 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 16:01:02,825 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 16:01:02,825 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 16:01:02,825 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 16:01:02,826 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 04:00:59" (3/4) ... [2019-12-07 16:01:02,829 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-12-07 16:01:02,836 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2019-12-07 16:01:02,836 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2019-12-07 16:01:02,836 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2019-12-07 16:01:02,855 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((ad1 * 7 + pa) % 8 == 0 && unknown-#memory_int-unknown[ad1][ad1 + (ad1 * -1 + pa) / 8 * 8] == (ad1 * -1 + pa) / 8) && i <= unknown-#memory_int-unknown[pa][pa]) && (\exists ULTIMATE.start_main_~pa~0.offset : int :: ((unknown-#memory_int-unknown[ad1][ULTIMATE.start_main_~pa~0.offset] <= i && (ad1 * 7 + ULTIMATE.start_main_~pa~0.offset) % 8 == 0) && i <= unknown-#memory_int-unknown[ad1][ULTIMATE.start_main_~pa~0.offset]) && unknown-#memory_int-unknown[ad1][ad1 + (ad1 * -1 + ULTIMATE.start_main_~pa~0.offset) / 8 * 8] == (ad1 * -1 + ULTIMATE.start_main_~pa~0.offset) / 8)) && pa == ad1 [2019-12-07 16:01:02,870 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_d99528f1-097a-4fb6-8f29-a6b9e566e5ed/bin/utaipan/witness.graphml [2019-12-07 16:01:02,870 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 16:01:02,872 INFO L168 Benchmark]: Toolchain (without parser) took 3847.46 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 109.1 MB). Free memory was 945.1 MB in the beginning and 852.3 MB in the end (delta: 92.8 MB). Peak memory consumption was 201.9 MB. Max. memory is 11.5 GB. [2019-12-07 16:01:02,872 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 961.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 16:01:02,873 INFO L168 Benchmark]: CACSL2BoogieTranslator took 192.35 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 109.1 MB). Free memory was 945.1 MB in the beginning and 1.1 GB in the end (delta: -157.7 MB). Peak memory consumption was 23.0 MB. Max. memory is 11.5 GB. [2019-12-07 16:01:02,873 INFO L168 Benchmark]: Boogie Procedure Inliner took 22.75 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 16:01:02,873 INFO L168 Benchmark]: Boogie Preprocessor took 15.30 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-12-07 16:01:02,874 INFO L168 Benchmark]: RCFGBuilder took 178.12 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 16.5 MB). Peak memory consumption was 16.5 MB. Max. memory is 11.5 GB. [2019-12-07 16:01:02,874 INFO L168 Benchmark]: TraceAbstraction took 3390.25 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 859.1 MB in the end (delta: 221.8 MB). Peak memory consumption was 221.8 MB. Max. memory is 11.5 GB. [2019-12-07 16:01:02,874 INFO L168 Benchmark]: Witness Printer took 45.58 ms. Allocated memory is still 1.1 GB. Free memory was 854.0 MB in the beginning and 852.3 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 11.5 GB. [2019-12-07 16:01:02,876 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 961.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 192.35 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 109.1 MB). Free memory was 945.1 MB in the beginning and 1.1 GB in the end (delta: -157.7 MB). Peak memory consumption was 23.0 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 22.75 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 15.30 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 178.12 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 16.5 MB). Peak memory consumption was 16.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 3390.25 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 859.1 MB in the end (delta: 221.8 MB). Peak memory consumption was 221.8 MB. Max. memory is 11.5 GB. * Witness Printer took 45.58 ms. Allocated memory is still 1.1 GB. Free memory was 854.0 MB in the beginning and 852.3 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~pa~0.offset,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~pa~0.offset,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~pa~0.offset,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~pa~0.offset,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~pa~0.offset,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~pa~0.offset,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~pa~0.offset,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~pa~0.offset,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~pa~0.offset,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~pa~0.offset,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 36]: 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: 14]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 26]: Loop Invariant [2019-12-07 16:01:02,881 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~pa~0.offset,QUANTIFIED] [2019-12-07 16:01:02,882 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~pa~0.offset,QUANTIFIED] [2019-12-07 16:01:02,882 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~pa~0.offset,QUANTIFIED] [2019-12-07 16:01:02,882 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~pa~0.offset,QUANTIFIED] [2019-12-07 16:01:02,882 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~pa~0.offset,QUANTIFIED] [2019-12-07 16:01:02,883 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-12-07 16:01:02,883 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-12-07 16:01:02,883 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-12-07 16:01:02,883 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-12-07 16:01:02,883 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-12-07 16:01:02,884 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~pa~0.offset,QUANTIFIED] [2019-12-07 16:01:02,884 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~pa~0.offset,QUANTIFIED] [2019-12-07 16:01:02,884 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~pa~0.offset,QUANTIFIED] [2019-12-07 16:01:02,884 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~pa~0.offset,QUANTIFIED] [2019-12-07 16:01:02,885 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~pa~0.offset,QUANTIFIED] [2019-12-07 16:01:02,885 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-12-07 16:01:02,885 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-12-07 16:01:02,885 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-12-07 16:01:02,886 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-12-07 16:01:02,886 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int Derived loop invariant: ((((ad1 * 7 + pa) % 8 == 0 && unknown-#memory_int-unknown[ad1][ad1 + (ad1 * -1 + pa) / 8 * 8] == (ad1 * -1 + pa) / 8) && i <= unknown-#memory_int-unknown[pa][pa]) && (\exists ULTIMATE.start_main_~pa~0.offset : int :: ((unknown-#memory_int-unknown[ad1][ULTIMATE.start_main_~pa~0.offset] <= i && (ad1 * 7 + ULTIMATE.start_main_~pa~0.offset) % 8 == 0) && i <= unknown-#memory_int-unknown[ad1][ULTIMATE.start_main_~pa~0.offset]) && unknown-#memory_int-unknown[ad1][ad1 + (ad1 * -1 + ULTIMATE.start_main_~pa~0.offset) / 8 * 8] == (ad1 * -1 + ULTIMATE.start_main_~pa~0.offset) / 8)) && pa == ad1 - InvariantResult [Line: 26]: Loop Invariant [2019-12-07 16:01:02,887 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-12-07 16:01:02,887 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-12-07 16:01:02,888 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2019-12-07 16:01:02,888 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int Derived loop invariant: (((ad1 * 7 + pa) % 8 == 0 && unknown-#memory_int-unknown[ad1][ad1 + (ad1 * -1 + pa) / 8 * 8] == (ad1 * -1 + pa) / 8) && i <= unknown-#memory_int-unknown[pa][pa]) && pa == ad1 - InvariantResult [Line: 15]: Loop Invariant Derived loop invariant: 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 1 error locations. Result: SAFE, OverallTime: 3.2s, OverallIterations: 4, TraceHistogramMax: 5, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 26 SDtfs, 20 SDslu, 14 SDs, 0 SdLazy, 102 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 106 GetRequests, 42 SyntacticMatches, 10 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 484 ImplicationChecksByTransitivity, 1.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=16occurred in iteration=3, 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, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 11 NumberOfFragments, 136 HoareAnnotationTreeSize, 4 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 240 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 61 NumberOfCodeBlocks, 57 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 77 ConstructedInterpolants, 12 QuantifiedInterpolants, 12169 SizeOfPredicates, 29 NumberOfNonLiveVariables, 123 ConjunctsInSsa, 40 ConjunctsInUnsatCore, 8 InterpolantComputations, 2 PerfectInterpolantSequences, 25/66 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...