./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/dijkstra-u_unwindbound1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_f16a841c-f842-4b9d-a2a0-4e3b2946b5c9/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_f16a841c-f842-4b9d-a2a0-4e3b2946b5c9/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_f16a841c-f842-4b9d-a2a0-4e3b2946b5c9/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_f16a841c-f842-4b9d-a2a0-4e3b2946b5c9/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/dijkstra-u_unwindbound1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_f16a841c-f842-4b9d-a2a0-4e3b2946b5c9/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_f16a841c-f842-4b9d-a2a0-4e3b2946b5c9/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 980b89e86ce07236ec737c292cc01a6432932a51 ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 07:37:15,499 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 07:37:15,502 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 07:37:15,569 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 07:37:15,578 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 07:37:15,591 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 07:37:15,593 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 07:37:15,596 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 07:37:15,599 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 07:37:15,600 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 07:37:15,602 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 07:37:15,603 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 07:37:15,604 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 07:37:15,606 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 07:37:15,607 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 07:37:15,609 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 07:37:15,610 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 07:37:15,611 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 07:37:15,614 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 07:37:15,617 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 07:37:15,620 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 07:37:15,622 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 07:37:15,624 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 07:37:15,625 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 07:37:15,629 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 07:37:15,630 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 07:37:15,631 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 07:37:15,632 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 07:37:15,633 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 07:37:15,634 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 07:37:15,635 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 07:37:15,636 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 07:37:15,637 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 07:37:15,638 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 07:37:15,640 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 07:37:15,640 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 07:37:15,641 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 07:37:15,642 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 07:37:15,642 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 07:37:15,644 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 07:37:15,645 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 07:37:15,646 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_f16a841c-f842-4b9d-a2a0-4e3b2946b5c9/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-28 07:37:15,672 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 07:37:15,672 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 07:37:15,673 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-28 07:37:15,673 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-28 07:37:15,673 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-28 07:37:15,673 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-28 07:37:15,674 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-28 07:37:15,674 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-28 07:37:15,674 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-28 07:37:15,674 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-28 07:37:15,675 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-28 07:37:15,675 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-28 07:37:15,675 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-28 07:37:15,675 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-28 07:37:15,676 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-28 07:37:15,676 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 07:37:15,677 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 07:37:15,677 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 07:37:15,677 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 07:37:15,677 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 07:37:15,677 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 07:37:15,678 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 07:37:15,678 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 07:37:15,678 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-28 07:37:15,678 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 07:37:15,679 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 07:37:15,679 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 07:37:15,679 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 07:37:15,679 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 07:37:15,680 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 07:37:15,680 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 07:37:15,680 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:37:15,680 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 07:37:15,681 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 07:37:15,681 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 07:37:15,681 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-28 07:37:15,681 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 07:37:15,682 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 07:37:15,682 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 07:37:15,682 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-28 07:37:15,682 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_f16a841c-f842-4b9d-a2a0-4e3b2946b5c9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_f16a841c-f842-4b9d-a2a0-4e3b2946b5c9/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 980b89e86ce07236ec737c292cc01a6432932a51 [2020-11-28 07:37:15,912 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 07:37:15,932 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 07:37:15,935 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 07:37:15,936 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 07:37:15,937 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 07:37:15,938 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_f16a841c-f842-4b9d-a2a0-4e3b2946b5c9/bin/utaipan/../../sv-benchmarks/c/nla-digbench-scaling/dijkstra-u_unwindbound1.c [2020-11-28 07:37:16,013 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f16a841c-f842-4b9d-a2a0-4e3b2946b5c9/bin/utaipan/data/750b11d0a/1fb6d82641c94215b9ebe5efe4d868d7/FLAG0bae40190 [2020-11-28 07:37:16,622 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 07:37:16,623 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_f16a841c-f842-4b9d-a2a0-4e3b2946b5c9/sv-benchmarks/c/nla-digbench-scaling/dijkstra-u_unwindbound1.c [2020-11-28 07:37:16,638 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f16a841c-f842-4b9d-a2a0-4e3b2946b5c9/bin/utaipan/data/750b11d0a/1fb6d82641c94215b9ebe5efe4d868d7/FLAG0bae40190 [2020-11-28 07:37:16,976 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_f16a841c-f842-4b9d-a2a0-4e3b2946b5c9/bin/utaipan/data/750b11d0a/1fb6d82641c94215b9ebe5efe4d868d7 [2020-11-28 07:37:16,979 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 07:37:16,980 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 07:37:16,982 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 07:37:16,982 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 07:37:16,986 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 07:37:16,987 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:37:16" (1/1) ... [2020-11-28 07:37:16,989 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a850e5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:37:16, skipping insertion in model container [2020-11-28 07:37:16,989 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:37:16" (1/1) ... [2020-11-28 07:37:16,997 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 07:37:17,013 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 07:37:17,272 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:37:17,285 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 07:37:17,332 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:37:17,346 INFO L208 MainTranslator]: Completed translation [2020-11-28 07:37:17,346 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:37:17 WrapperNode [2020-11-28 07:37:17,346 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 07:37:17,348 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 07:37:17,348 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 07:37:17,348 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 07:37:17,356 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:37:17" (1/1) ... [2020-11-28 07:37:17,364 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:37:17" (1/1) ... [2020-11-28 07:37:17,396 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 07:37:17,397 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 07:37:17,397 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 07:37:17,397 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 07:37:17,405 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:37:17" (1/1) ... [2020-11-28 07:37:17,405 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:37:17" (1/1) ... [2020-11-28 07:37:17,408 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:37:17" (1/1) ... [2020-11-28 07:37:17,408 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:37:17" (1/1) ... [2020-11-28 07:37:17,415 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:37:17" (1/1) ... [2020-11-28 07:37:17,420 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:37:17" (1/1) ... [2020-11-28 07:37:17,423 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:37:17" (1/1) ... [2020-11-28 07:37:17,425 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 07:37:17,427 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 07:37:17,427 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 07:37:17,427 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 07:37:17,428 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:37:17" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f16a841c-f842-4b9d-a2a0-4e3b2946b5c9/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:37:17,516 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 07:37:17,516 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 07:37:17,516 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 07:37:17,516 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 07:37:17,517 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_unsigned_int [2020-11-28 07:37:27,219 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 07:37:27,219 INFO L298 CfgBuilder]: Removed 44 assume(true) statements. [2020-11-28 07:37:27,221 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:37:27 BoogieIcfgContainer [2020-11-28 07:37:27,222 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 07:37:27,223 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 07:37:27,223 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 07:37:27,227 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 07:37:27,227 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 07:37:16" (1/3) ... [2020-11-28 07:37:27,228 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@335e8086 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:37:27, skipping insertion in model container [2020-11-28 07:37:27,228 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:37:17" (2/3) ... [2020-11-28 07:37:27,228 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@335e8086 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:37:27, skipping insertion in model container [2020-11-28 07:37:27,229 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:37:27" (3/3) ... [2020-11-28 07:37:27,230 INFO L111 eAbstractionObserver]: Analyzing ICFG dijkstra-u_unwindbound1.c [2020-11-28 07:37:27,242 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 07:37:27,247 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 9 error locations. [2020-11-28 07:37:27,259 INFO L253 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2020-11-28 07:37:27,282 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 07:37:27,282 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 07:37:27,283 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 07:37:27,283 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 07:37:27,283 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 07:37:27,283 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 07:37:27,283 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 07:37:27,283 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 07:37:27,299 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2020-11-28 07:37:27,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-28 07:37:27,304 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:37:27,305 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-11-28 07:37:27,306 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:37:27,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:37:27,313 INFO L82 PathProgramCache]: Analyzing trace with hash 1401312312, now seen corresponding path program 1 times [2020-11-28 07:37:27,323 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:37:27,324 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264343918] [2020-11-28 07:37:27,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:37:27,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:37:27,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:37:27,505 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264343918] [2020-11-28 07:37:27,506 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:37:27,506 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:37:27,507 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326692031] [2020-11-28 07:37:27,512 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-28 07:37:27,512 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:37:27,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-28 07:37:27,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 07:37:27,534 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 2 states. [2020-11-28 07:37:27,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:37:27,568 INFO L93 Difference]: Finished difference Result 84 states and 109 transitions. [2020-11-28 07:37:27,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-28 07:37:27,570 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2020-11-28 07:37:27,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:37:27,590 INFO L225 Difference]: With dead ends: 84 [2020-11-28 07:37:27,592 INFO L226 Difference]: Without dead ends: 42 [2020-11-28 07:37:27,602 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 [2020-11-28 07:37:27,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-11-28 07:37:27,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-11-28 07:37:27,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-11-28 07:37:27,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 45 transitions. [2020-11-28 07:37:27,666 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 45 transitions. Word has length 6 [2020-11-28 07:37:27,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:37:27,666 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 45 transitions. [2020-11-28 07:37:27,667 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-28 07:37:27,667 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 45 transitions. [2020-11-28 07:37:27,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-28 07:37:27,668 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:37:27,668 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:37:27,668 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 07:37:27,668 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:37:27,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:37:27,672 INFO L82 PathProgramCache]: Analyzing trace with hash 49537040, now seen corresponding path program 1 times [2020-11-28 07:37:27,673 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:37:27,673 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971882366] [2020-11-28 07:37:27,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:37:27,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:37:27,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:37:27,818 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971882366] [2020-11-28 07:37:27,818 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:37:27,818 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 07:37:27,819 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242630745] [2020-11-28 07:37:27,820 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 07:37:27,820 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:37:27,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 07:37:27,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 07:37:27,822 INFO L87 Difference]: Start difference. First operand 42 states and 45 transitions. Second operand 4 states. [2020-11-28 07:37:27,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:37:27,853 INFO L93 Difference]: Finished difference Result 82 states and 87 transitions. [2020-11-28 07:37:27,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 07:37:27,854 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-11-28 07:37:27,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:37:27,855 INFO L225 Difference]: With dead ends: 82 [2020-11-28 07:37:27,855 INFO L226 Difference]: Without dead ends: 44 [2020-11-28 07:37:27,856 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 07:37:27,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-11-28 07:37:27,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2020-11-28 07:37:27,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-11-28 07:37:27,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 47 transitions. [2020-11-28 07:37:27,862 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 47 transitions. Word has length 7 [2020-11-28 07:37:27,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:37:27,863 INFO L481 AbstractCegarLoop]: Abstraction has 44 states and 47 transitions. [2020-11-28 07:37:27,863 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 07:37:27,863 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 47 transitions. [2020-11-28 07:37:27,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-28 07:37:27,863 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:37:27,863 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:37:27,864 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 07:37:27,864 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:37:27,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:37:27,864 INFO L82 PathProgramCache]: Analyzing trace with hash 1584442994, now seen corresponding path program 1 times [2020-11-28 07:37:27,865 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:37:27,865 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317288663] [2020-11-28 07:37:27,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:37:27,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:37:27,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:37:27,969 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317288663] [2020-11-28 07:37:27,969 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:37:27,970 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 07:37:27,970 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85063774] [2020-11-28 07:37:27,970 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 07:37:27,970 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:37:27,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 07:37:27,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 07:37:27,972 INFO L87 Difference]: Start difference. First operand 44 states and 47 transitions. Second operand 5 states. [2020-11-28 07:37:28,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:37:28,025 INFO L93 Difference]: Finished difference Result 58 states and 61 transitions. [2020-11-28 07:37:28,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 07:37:28,026 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2020-11-28 07:37:28,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:37:28,027 INFO L225 Difference]: With dead ends: 58 [2020-11-28 07:37:28,027 INFO L226 Difference]: Without dead ends: 20 [2020-11-28 07:37:28,028 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-28 07:37:28,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-11-28 07:37:28,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2020-11-28 07:37:28,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-11-28 07:37:28,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2020-11-28 07:37:28,032 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 8 [2020-11-28 07:37:28,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:37:28,033 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2020-11-28 07:37:28,033 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 07:37:28,033 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2020-11-28 07:37:28,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-28 07:37:28,033 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:37:28,033 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:37:28,034 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-28 07:37:28,034 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:37:28,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:37:28,034 INFO L82 PathProgramCache]: Analyzing trace with hash 1873115470, now seen corresponding path program 1 times [2020-11-28 07:37:28,035 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:37:28,035 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247692988] [2020-11-28 07:37:28,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:37:28,053 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 07:37:28,067 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1904728899] [2020-11-28 07:37:28,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f16a841c-f842-4b9d-a2a0-4e3b2946b5c9/bin/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 07:37:28,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:37:28,134 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-28 07:37:28,139 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:37:28,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:37:28,210 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:37:28,229 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-28 07:37:30,420 WARN L860 $PredicateComparison]: unable to prove that (= (mod (let ((.cse0 (* c_ULTIMATE.start_main_~h~0 12))) (+ (* (* .cse0 c_ULTIMATE.start_main_~n~0) 4294967295) (* (* (* c_ULTIMATE.start_main_~p~0 16) c_ULTIMATE.start_main_~r~0) 4294967295) (* c_ULTIMATE.start_main_~p~0 4294967292) (* .cse0 c_ULTIMATE.start_main_~r~0) (* (* c_ULTIMATE.start_main_~n~0 16) c_ULTIMATE.start_main_~p~0) (* (* c_ULTIMATE.start_main_~h~0 c_ULTIMATE.start_main_~h~0) c_ULTIMATE.start_main_~h~0) (* c_ULTIMATE.start_main_~h~0 4294967295))) 4294967296) 0) is different from true [2020-11-28 07:37:30,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:37:30,425 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247692988] [2020-11-28 07:37:30,425 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 07:37:30,426 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1904728899] [2020-11-28 07:37:30,426 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:37:30,426 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-11-28 07:37:30,426 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781214492] [2020-11-28 07:37:30,427 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 07:37:30,427 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:37:30,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 07:37:30,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=8, Unknown=1, NotChecked=4, Total=20 [2020-11-28 07:37:30,428 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand 5 states. [2020-11-28 07:37:30,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:37:30,517 INFO L93 Difference]: Finished difference Result 20 states and 21 transitions. [2020-11-28 07:37:30,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 07:37:30,518 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2020-11-28 07:37:30,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:37:30,519 INFO L225 Difference]: With dead ends: 20 [2020-11-28 07:37:30,519 INFO L226 Difference]: Without dead ends: 0 [2020-11-28 07:37:30,519 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=11, Invalid=12, Unknown=1, NotChecked=6, Total=30 [2020-11-28 07:37:30,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-28 07:37:30,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-28 07:37:30,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-28 07:37:30,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-28 07:37:30,520 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 9 [2020-11-28 07:37:30,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:37:30,521 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 07:37:30,521 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 07:37:30,521 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-28 07:37:30,521 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-28 07:37:30,730 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 07:37:30,732 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-28 07:37:30,845 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-11-28 07:37:30,845 INFO L274 CegarLoopResult]: For program point L52-2(lines 20 61) no Hoare annotation was computed. [2020-11-28 07:37:30,845 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-11-28 07:37:30,845 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-28 07:37:30,845 INFO L274 CegarLoopResult]: For program point L12(lines 12 15) no Hoare annotation was computed. [2020-11-28 07:37:30,846 INFO L270 CegarLoopResult]: At program point L12-1(lines 11 17) the Hoare annotation is: false [2020-11-28 07:37:30,846 INFO L274 CegarLoopResult]: For program point L12-2(lines 12 15) no Hoare annotation was computed. [2020-11-28 07:37:30,846 INFO L270 CegarLoopResult]: At program point L12-3(lines 11 17) the Hoare annotation is: false [2020-11-28 07:37:30,846 INFO L274 CegarLoopResult]: For program point L12-4(lines 12 15) no Hoare annotation was computed. [2020-11-28 07:37:30,846 INFO L270 CegarLoopResult]: At program point L12-5(lines 11 17) the Hoare annotation is: false [2020-11-28 07:37:30,846 INFO L274 CegarLoopResult]: For program point L12-6(lines 12 15) no Hoare annotation was computed. [2020-11-28 07:37:30,846 INFO L270 CegarLoopResult]: At program point L12-7(lines 11 17) the Hoare annotation is: false [2020-11-28 07:37:30,846 INFO L274 CegarLoopResult]: For program point L12-8(lines 12 15) no Hoare annotation was computed. [2020-11-28 07:37:30,847 INFO L270 CegarLoopResult]: At program point L12-9(lines 11 17) the Hoare annotation is: false [2020-11-28 07:37:30,847 INFO L274 CegarLoopResult]: For program point L12-10(lines 12 15) no Hoare annotation was computed. [2020-11-28 07:37:30,847 INFO L270 CegarLoopResult]: At program point L12-11(lines 46 47) the Hoare annotation is: false [2020-11-28 07:37:30,847 INFO L274 CegarLoopResult]: For program point L12-12(lines 12 15) no Hoare annotation was computed. [2020-11-28 07:37:30,847 INFO L270 CegarLoopResult]: At program point L12-13(lines 11 17) the Hoare annotation is: (and (<= 1 ~counter~0) (= ULTIMATE.start_main_~h~0 0) (= ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~r~0) (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= ULTIMATE.start_main_~p~0 0)) [2020-11-28 07:37:30,847 INFO L274 CegarLoopResult]: For program point L12-14(lines 12 15) no Hoare annotation was computed. [2020-11-28 07:37:30,847 INFO L270 CegarLoopResult]: At program point L12-15(lines 11 17) the Hoare annotation is: (and (<= 1 ~counter~0) (= ULTIMATE.start_main_~h~0 0) (= ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~r~0) (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= ULTIMATE.start_main_~p~0 0)) [2020-11-28 07:37:30,847 INFO L274 CegarLoopResult]: For program point L12-16(lines 12 15) no Hoare annotation was computed. [2020-11-28 07:37:30,848 INFO L277 CegarLoopResult]: At program point L12-17(lines 11 17) the Hoare annotation is: true [2020-11-28 07:37:30,848 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-11-28 07:37:30,848 INFO L274 CegarLoopResult]: For program point L13(lines 13 14) no Hoare annotation was computed. [2020-11-28 07:37:30,848 INFO L274 CegarLoopResult]: For program point L13-1(lines 13 14) no Hoare annotation was computed. [2020-11-28 07:37:30,848 INFO L274 CegarLoopResult]: For program point L13-2(lines 13 14) no Hoare annotation was computed. [2020-11-28 07:37:30,848 INFO L274 CegarLoopResult]: For program point L13-3(lines 13 14) no Hoare annotation was computed. [2020-11-28 07:37:30,848 INFO L274 CegarLoopResult]: For program point L13-4(lines 13 14) no Hoare annotation was computed. [2020-11-28 07:37:30,848 INFO L274 CegarLoopResult]: For program point L13-5(lines 13 14) no Hoare annotation was computed. [2020-11-28 07:37:30,848 INFO L274 CegarLoopResult]: For program point L13-6(lines 13 14) no Hoare annotation was computed. [2020-11-28 07:37:30,849 INFO L274 CegarLoopResult]: For program point L38(lines 38 56) no Hoare annotation was computed. [2020-11-28 07:37:30,849 INFO L274 CegarLoopResult]: For program point L13-7(lines 13 14) no Hoare annotation was computed. [2020-11-28 07:37:30,849 INFO L274 CegarLoopResult]: For program point L13-8(lines 13 14) no Hoare annotation was computed. [2020-11-28 07:37:30,849 INFO L274 CegarLoopResult]: For program point L38-2(lines 38 56) no Hoare annotation was computed. [2020-11-28 07:37:30,849 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-11-28 07:37:30,849 INFO L274 CegarLoopResult]: For program point L30-1(lines 30 35) no Hoare annotation was computed. [2020-11-28 07:37:30,850 INFO L270 CegarLoopResult]: At program point L30-3(lines 30 35) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_main_~h~0 0)) (.cse1 (= ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~r~0)) (.cse2 (= ULTIMATE.start_main_~p~0 0))) (or (and (= ~counter~0 0) .cse0 .cse1 .cse2) (and (<= 1 ~counter~0) .cse0 .cse1 .cse2))) [2020-11-28 07:37:30,850 INFO L274 CegarLoopResult]: For program point L31(lines 31 32) no Hoare annotation was computed. [2020-11-28 07:37:30,850 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-11-28 07:37:30,850 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-11-28 07:37:30,850 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-11-28 07:37:30,850 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-28 07:37:30,850 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-11-28 07:37:30,850 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-11-28 07:37:30,869 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 07:37:30 BoogieIcfgContainer [2020-11-28 07:37:30,870 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 07:37:30,870 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 07:37:30,870 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 07:37:30,871 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 07:37:30,872 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:37:27" (3/4) ... [2020-11-28 07:37:30,876 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-28 07:37:30,890 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2020-11-28 07:37:30,891 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2020-11-28 07:37:30,891 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-11-28 07:37:30,892 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 07:37:30,986 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_f16a841c-f842-4b9d-a2a0-4e3b2946b5c9/bin/utaipan/witness.graphml [2020-11-28 07:37:30,991 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 07:37:30,993 INFO L168 Benchmark]: Toolchain (without parser) took 14011.14 ms. Allocated memory was 92.3 MB in the beginning and 111.1 MB in the end (delta: 18.9 MB). Free memory was 64.0 MB in the beginning and 87.7 MB in the end (delta: -23.6 MB). Peak memory consumption was 46.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:37:30,993 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 92.3 MB. Free memory is still 54.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:37:30,994 INFO L168 Benchmark]: CACSL2BoogieTranslator took 364.77 ms. Allocated memory was 92.3 MB in the beginning and 111.1 MB in the end (delta: 18.9 MB). Free memory was 63.7 MB in the beginning and 87.3 MB in the end (delta: -23.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 07:37:30,994 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.72 ms. Allocated memory is still 111.1 MB. Free memory was 87.3 MB in the beginning and 85.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:37:30,995 INFO L168 Benchmark]: Boogie Preprocessor took 28.58 ms. Allocated memory is still 111.1 MB. Free memory was 85.3 MB in the beginning and 83.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:37:30,995 INFO L168 Benchmark]: RCFGBuilder took 9795.13 ms. Allocated memory is still 111.1 MB. Free memory was 83.7 MB in the beginning and 59.5 MB in the end (delta: 24.2 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. [2020-11-28 07:37:30,996 INFO L168 Benchmark]: TraceAbstraction took 3646.70 ms. Allocated memory is still 111.1 MB. Free memory was 59.0 MB in the beginning and 43.2 MB in the end (delta: 15.8 MB). Peak memory consumption was 17.6 MB. Max. memory is 16.1 GB. [2020-11-28 07:37:30,996 INFO L168 Benchmark]: Witness Printer took 120.53 ms. Allocated memory is still 111.1 MB. Free memory was 43.2 MB in the beginning and 87.7 MB in the end (delta: -44.4 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-11-28 07:37:30,999 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 92.3 MB. Free memory is still 54.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 364.77 ms. Allocated memory was 92.3 MB in the beginning and 111.1 MB in the end (delta: 18.9 MB). Free memory was 63.7 MB in the beginning and 87.3 MB in the end (delta: -23.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 48.72 ms. Allocated memory is still 111.1 MB. Free memory was 87.3 MB in the beginning and 85.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 28.58 ms. Allocated memory is still 111.1 MB. Free memory was 85.3 MB in the beginning and 83.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 9795.13 ms. Allocated memory is still 111.1 MB. Free memory was 83.7 MB in the beginning and 59.5 MB in the end (delta: 24.2 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3646.70 ms. Allocated memory is still 111.1 MB. Free memory was 59.0 MB in the beginning and 43.2 MB in the end (delta: 15.8 MB). Peak memory consumption was 17.6 MB. Max. memory is 16.1 GB. * Witness Printer took 120.53 ms. Allocated memory is still 111.1 MB. Free memory was 43.2 MB in the beginning and 87.7 MB in the end (delta: -44.4 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 9 specifications checked. All of them hold - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: (((1 <= counter && h == 0) && n == r) && 1 <= cond) && p == 0 - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 30]: Loop Invariant Derived loop invariant: (((counter == 0 && h == 0) && n == r) && p == 0) || (((1 <= counter && h == 0) && n == r) && p == 0) - InvariantResult [Line: 46]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: (((1 <= counter && h == 0) && n == r) && 1 <= cond) && p == 0 - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 44 locations, 9 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.4s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 112 SDtfs, 20 SDslu, 118 SDs, 0 SdLazy, 31 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 28 GetRequests, 16 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=44occurred 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, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 10 LocationsWithAnnotation, 10 PreInvPairs, 14 NumberOfFragments, 66 HoareAnnotationTreeSize, 10 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 10 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 2.4s InterpolantComputationTime, 30 NumberOfCodeBlocks, 30 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 34 ConstructedInterpolants, 0 QuantifiedInterpolants, 2668 SizeOfPredicates, 6 NumberOfNonLiveVariables, 64 ConjunctsInSsa, 9 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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 proved your program to be correct! Received shutdown request...