./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_valuebound20.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_ec99515c-ee92-4c1c-8339-9c934851b2f8/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_ec99515c-ee92-4c1c-8339-9c934851b2f8/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_ec99515c-ee92-4c1c-8339-9c934851b2f8/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_ec99515c-ee92-4c1c-8339-9c934851b2f8/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_valuebound20.c -s /tmp/vcloud-vcloud-master/worker/run_dir_ec99515c-ee92-4c1c-8339-9c934851b2f8/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_ec99515c-ee92-4c1c-8339-9c934851b2f8/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 7f1b097c6afa8c7725240a0195cb226f841ae6ea ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-30 03:34:11,198 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 03:34:11,201 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 03:34:11,306 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 03:34:11,307 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 03:34:11,313 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 03:34:11,317 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 03:34:11,320 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 03:34:11,325 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 03:34:11,334 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 03:34:11,335 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 03:34:11,343 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 03:34:11,344 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 03:34:11,345 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 03:34:11,347 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 03:34:11,350 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 03:34:11,351 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 03:34:11,353 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 03:34:11,356 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 03:34:11,359 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 03:34:11,362 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 03:34:11,364 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 03:34:11,366 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 03:34:11,368 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 03:34:11,372 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 03:34:11,373 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 03:34:11,374 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 03:34:11,375 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 03:34:11,376 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 03:34:11,378 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 03:34:11,378 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 03:34:11,380 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 03:34:11,381 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 03:34:11,382 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 03:34:11,384 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 03:34:11,385 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 03:34:11,386 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 03:34:11,387 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 03:34:11,387 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 03:34:11,389 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 03:34:11,390 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 03:34:11,391 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_ec99515c-ee92-4c1c-8339-9c934851b2f8/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-30 03:34:11,432 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 03:34:11,433 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 03:34:11,435 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-30 03:34:11,435 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-30 03:34:11,436 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-30 03:34:11,436 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-30 03:34:11,436 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-30 03:34:11,437 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-30 03:34:11,437 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-30 03:34:11,437 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-30 03:34:11,439 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-30 03:34:11,439 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-30 03:34:11,440 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-30 03:34:11,440 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-30 03:34:11,440 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-30 03:34:11,441 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 03:34:11,442 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 03:34:11,442 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 03:34:11,443 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 03:34:11,443 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 03:34:11,443 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 03:34:11,444 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 03:34:11,444 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 03:34:11,444 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-30 03:34:11,444 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 03:34:11,445 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 03:34:11,445 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 03:34:11,445 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 03:34:11,446 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 03:34:11,448 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 03:34:11,449 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 03:34:11,449 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 03:34:11,450 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 03:34:11,450 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 03:34:11,450 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 03:34:11,451 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-30 03:34:11,451 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-30 03:34:11,451 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 03:34:11,452 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 03:34:11,452 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-30 03:34:11,452 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_ec99515c-ee92-4c1c-8339-9c934851b2f8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_ec99515c-ee92-4c1c-8339-9c934851b2f8/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7f1b097c6afa8c7725240a0195cb226f841ae6ea [2020-11-30 03:34:11,898 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 03:34:11,966 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 03:34:11,970 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 03:34:11,971 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 03:34:11,973 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 03:34:11,974 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_ec99515c-ee92-4c1c-8339-9c934851b2f8/bin/utaipan/../../sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_valuebound20.c [2020-11-30 03:34:12,090 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_ec99515c-ee92-4c1c-8339-9c934851b2f8/bin/utaipan/data/bba031595/844ae82727c94586b5b63045cc736a87/FLAG60aebe87f [2020-11-30 03:34:12,859 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 03:34:12,861 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_ec99515c-ee92-4c1c-8339-9c934851b2f8/sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_valuebound20.c [2020-11-30 03:34:12,881 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_ec99515c-ee92-4c1c-8339-9c934851b2f8/bin/utaipan/data/bba031595/844ae82727c94586b5b63045cc736a87/FLAG60aebe87f [2020-11-30 03:34:13,207 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_ec99515c-ee92-4c1c-8339-9c934851b2f8/bin/utaipan/data/bba031595/844ae82727c94586b5b63045cc736a87 [2020-11-30 03:34:13,211 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 03:34:13,213 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 03:34:13,219 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 03:34:13,223 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 03:34:13,229 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 03:34:13,230 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 03:34:13" (1/1) ... [2020-11-30 03:34:13,233 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8d0875d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:34:13, skipping insertion in model container [2020-11-30 03:34:13,233 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 03:34:13" (1/1) ... [2020-11-30 03:34:13,245 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 03:34:13,271 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 03:34:13,572 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 03:34:13,582 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 03:34:13,606 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 03:34:13,626 INFO L208 MainTranslator]: Completed translation [2020-11-30 03:34:13,627 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:34:13 WrapperNode [2020-11-30 03:34:13,627 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 03:34:13,629 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 03:34:13,630 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 03:34:13,630 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 03:34:13,641 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:34:13" (1/1) ... [2020-11-30 03:34:13,651 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:34:13" (1/1) ... [2020-11-30 03:34:13,680 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 03:34:13,681 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 03:34:13,681 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 03:34:13,682 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 03:34:13,693 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:34:13" (1/1) ... [2020-11-30 03:34:13,693 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:34:13" (1/1) ... [2020-11-30 03:34:13,695 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:34:13" (1/1) ... [2020-11-30 03:34:13,696 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:34:13" (1/1) ... [2020-11-30 03:34:13,701 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:34:13" (1/1) ... [2020-11-30 03:34:13,707 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:34:13" (1/1) ... [2020-11-30 03:34:13,709 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:34:13" (1/1) ... [2020-11-30 03:34:13,712 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 03:34:13,713 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 03:34:13,714 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 03:34:13,714 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 03:34:13,715 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:34:13" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ec99515c-ee92-4c1c-8339-9c934851b2f8/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 [2020-11-30 03:34:13,817 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-30 03:34:13,818 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 03:34:13,818 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 03:34:13,818 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 03:34:14,726 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 03:34:14,728 INFO L298 CfgBuilder]: Removed 31 assume(true) statements. [2020-11-30 03:34:14,734 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 03:34:14 BoogieIcfgContainer [2020-11-30 03:34:14,735 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 03:34:14,740 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 03:34:14,743 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 03:34:14,748 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 03:34:14,749 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 03:34:13" (1/3) ... [2020-11-30 03:34:14,750 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@607f6baf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 03:34:14, skipping insertion in model container [2020-11-30 03:34:14,751 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:34:13" (2/3) ... [2020-11-30 03:34:14,752 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@607f6baf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 03:34:14, skipping insertion in model container [2020-11-30 03:34:14,752 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 03:34:14" (3/3) ... [2020-11-30 03:34:14,754 INFO L111 eAbstractionObserver]: Analyzing ICFG sqrt1-ll_valuebound20.c [2020-11-30 03:34:14,772 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 03:34:14,779 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-11-30 03:34:14,797 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-11-30 03:34:14,831 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 03:34:14,832 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 03:34:14,832 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 03:34:14,832 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 03:34:14,832 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 03:34:14,833 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 03:34:14,833 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 03:34:14,833 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 03:34:14,859 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2020-11-30 03:34:14,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-11-30 03:34:14,866 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 03:34:14,867 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-11-30 03:34:14,868 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 03:34:14,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 03:34:14,877 INFO L82 PathProgramCache]: Analyzing trace with hash 4158921, now seen corresponding path program 1 times [2020-11-30 03:34:14,890 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 03:34:14,891 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890726100] [2020-11-30 03:34:14,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 03:34:15,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 03:34:15,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 03:34:15,279 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890726100] [2020-11-30 03:34:15,281 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 03:34:15,281 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 03:34:15,283 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668678389] [2020-11-30 03:34:15,290 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 03:34:15,290 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 03:34:15,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 03:34:15,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 03:34:15,320 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 4 states. [2020-11-30 03:34:15,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 03:34:15,529 INFO L93 Difference]: Finished difference Result 78 states and 99 transitions. [2020-11-30 03:34:15,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-30 03:34:15,532 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2020-11-30 03:34:15,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 03:34:15,554 INFO L225 Difference]: With dead ends: 78 [2020-11-30 03:34:15,554 INFO L226 Difference]: Without dead ends: 47 [2020-11-30 03:34:15,563 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-30 03:34:15,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-11-30 03:34:15,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 35. [2020-11-30 03:34:15,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-11-30 03:34:15,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 38 transitions. [2020-11-30 03:34:15,634 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 38 transitions. Word has length 4 [2020-11-30 03:34:15,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 03:34:15,636 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 38 transitions. [2020-11-30 03:34:15,636 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 03:34:15,636 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 38 transitions. [2020-11-30 03:34:15,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-30 03:34:15,637 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 03:34:15,637 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-11-30 03:34:15,638 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-30 03:34:15,638 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 03:34:15,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 03:34:15,641 INFO L82 PathProgramCache]: Analyzing trace with hash -298057684, now seen corresponding path program 1 times [2020-11-30 03:34:15,641 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 03:34:15,641 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005092910] [2020-11-30 03:34:15,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 03:34:15,703 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 03:34:15,704 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [917574010] [2020-11-30 03:34:15,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ec99515c-ee92-4c1c-8339-9c934851b2f8/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 [2020-11-30 03:34:15,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 03:34:15,819 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-30 03:34:15,825 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 03:34:15,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 03:34:15,913 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 03:34:15,935 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 03:34:15,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 03:34:15,963 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005092910] [2020-11-30 03:34:15,963 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 03:34:15,963 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [917574010] [2020-11-30 03:34:15,964 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 03:34:15,964 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-11-30 03:34:15,964 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120304356] [2020-11-30 03:34:15,966 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-30 03:34:15,966 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 03:34:15,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-30 03:34:15,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-30 03:34:15,968 INFO L87 Difference]: Start difference. First operand 35 states and 38 transitions. Second operand 5 states. [2020-11-30 03:34:16,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 03:34:16,145 INFO L93 Difference]: Finished difference Result 47 states and 47 transitions. [2020-11-30 03:34:16,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 03:34:16,148 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 6 [2020-11-30 03:34:16,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 03:34:16,149 INFO L225 Difference]: With dead ends: 47 [2020-11-30 03:34:16,149 INFO L226 Difference]: Without dead ends: 43 [2020-11-30 03:34:16,151 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-11-30 03:34:16,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-11-30 03:34:16,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 37. [2020-11-30 03:34:16,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-11-30 03:34:16,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 39 transitions. [2020-11-30 03:34:16,167 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 39 transitions. Word has length 6 [2020-11-30 03:34:16,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 03:34:16,173 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 39 transitions. [2020-11-30 03:34:16,173 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-30 03:34:16,173 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 39 transitions. [2020-11-30 03:34:16,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-30 03:34:16,174 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 03:34:16,175 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 03:34:16,391 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-11-30 03:34:16,392 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 03:34:16,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 03:34:16,393 INFO L82 PathProgramCache]: Analyzing trace with hash 1329561423, now seen corresponding path program 1 times [2020-11-30 03:34:16,393 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 03:34:16,393 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226597446] [2020-11-30 03:34:16,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 03:34:16,411 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 03:34:16,411 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [69987924] [2020-11-30 03:34:16,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ec99515c-ee92-4c1c-8339-9c934851b2f8/bin/utaipan/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 03:34:16,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 03:34:16,477 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-30 03:34:16,479 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 03:34:16,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 03:34:16,555 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 03:34:16,569 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 03:34:16,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 03:34:16,597 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226597446] [2020-11-30 03:34:16,597 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 03:34:16,597 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [69987924] [2020-11-30 03:34:16,598 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 03:34:16,598 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-11-30 03:34:16,598 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620710846] [2020-11-30 03:34:16,599 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-30 03:34:16,599 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 03:34:16,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-30 03:34:16,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-30 03:34:16,601 INFO L87 Difference]: Start difference. First operand 37 states and 39 transitions. Second operand 5 states. [2020-11-30 03:34:18,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 03:34:18,868 INFO L93 Difference]: Finished difference Result 65 states and 67 transitions. [2020-11-30 03:34:18,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-30 03:34:18,869 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2020-11-30 03:34:18,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 03:34:18,870 INFO L225 Difference]: With dead ends: 65 [2020-11-30 03:34:18,871 INFO L226 Difference]: Without dead ends: 53 [2020-11-30 03:34:18,872 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-11-30 03:34:18,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-11-30 03:34:18,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 44. [2020-11-30 03:34:18,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-11-30 03:34:18,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 48 transitions. [2020-11-30 03:34:18,899 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 48 transitions. Word has length 8 [2020-11-30 03:34:18,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 03:34:18,899 INFO L481 AbstractCegarLoop]: Abstraction has 44 states and 48 transitions. [2020-11-30 03:34:18,900 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-30 03:34:18,900 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 48 transitions. [2020-11-30 03:34:18,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-30 03:34:18,902 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 03:34:18,902 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 03:34:19,127 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 03:34:19,127 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 03:34:19,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 03:34:19,128 INFO L82 PathProgramCache]: Analyzing trace with hash 781835680, now seen corresponding path program 1 times [2020-11-30 03:34:19,128 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 03:34:19,128 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831537078] [2020-11-30 03:34:19,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 03:34:19,145 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 03:34:19,146 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [586745266] [2020-11-30 03:34:19,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ec99515c-ee92-4c1c-8339-9c934851b2f8/bin/utaipan/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 03:34:19,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 03:34:19,215 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-30 03:34:19,217 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 03:34:19,260 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 03:34:19,260 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 03:34:19,279 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 03:34:19,306 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-30 03:34:19,306 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831537078] [2020-11-30 03:34:19,306 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 03:34:19,307 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [586745266] [2020-11-30 03:34:19,307 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1880144663] [2020-11-30 03:34:19,333 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2020-11-30 03:34:19,333 INFO L166 IcfgInterpreter]: Building call graph [2020-11-30 03:34:19,339 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-11-30 03:34:19,347 INFO L176 IcfgInterpreter]: Starting interpretation [2020-11-30 03:34:19,348 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-11-30 03:34:19,452 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-11-30 03:34:19,466 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-11-30 03:34:20,421 INFO L180 IcfgInterpreter]: Interpretation finished [2020-11-30 03:34:20,668 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 41 [2020-11-30 03:34:21,122 WARN L193 SmtUtils]: Spent 420.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 53 [2020-11-30 03:34:21,385 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 42 [2020-11-30 03:34:21,679 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 44 [2020-11-30 03:34:22,019 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 50 [2020-11-30 03:34:22,290 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 42 [2020-11-30 03:34:22,608 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 52 [2020-11-30 03:34:22,970 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 47 [2020-11-30 03:34:22,971 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 03:34:22,972 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-30 03:34:22,972 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3] total 5 [2020-11-30 03:34:22,972 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557821714] [2020-11-30 03:34:22,972 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-30 03:34:22,972 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 03:34:22,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-30 03:34:22,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2020-11-30 03:34:22,973 INFO L87 Difference]: Start difference. First operand 44 states and 48 transitions. Second operand 6 states. [2020-11-30 03:34:23,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 03:34:23,170 INFO L93 Difference]: Finished difference Result 48 states and 50 transitions. [2020-11-30 03:34:23,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-30 03:34:23,171 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2020-11-30 03:34:23,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 03:34:23,172 INFO L225 Difference]: With dead ends: 48 [2020-11-30 03:34:23,172 INFO L226 Difference]: Without dead ends: 44 [2020-11-30 03:34:23,174 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2020-11-30 03:34:23,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-11-30 03:34:23,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 40. [2020-11-30 03:34:23,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-11-30 03:34:23,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 42 transitions. [2020-11-30 03:34:23,199 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 42 transitions. Word has length 11 [2020-11-30 03:34:23,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 03:34:23,201 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 42 transitions. [2020-11-30 03:34:23,201 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-30 03:34:23,201 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 42 transitions. [2020-11-30 03:34:23,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-30 03:34:23,202 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 03:34:23,202 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 03:34:23,422 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 03:34:23,423 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 03:34:23,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 03:34:23,424 INFO L82 PathProgramCache]: Analyzing trace with hash -275001789, now seen corresponding path program 1 times [2020-11-30 03:34:23,424 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 03:34:23,424 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50184668] [2020-11-30 03:34:23,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 03:34:23,440 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 03:34:23,441 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [815784867] [2020-11-30 03:34:23,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ec99515c-ee92-4c1c-8339-9c934851b2f8/bin/utaipan/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 03:34:23,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 03:34:23,515 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 15 conjunts are in the unsatisfiable core [2020-11-30 03:34:23,517 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 03:34:23,583 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 03:34:23,583 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 03:34:23,679 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 03:34:23,679 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50184668] [2020-11-30 03:34:23,680 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 03:34:23,680 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [815784867] [2020-11-30 03:34:23,680 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1730160633] [2020-11-30 03:34:23,683 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2020-11-30 03:34:23,683 INFO L166 IcfgInterpreter]: Building call graph [2020-11-30 03:34:23,684 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-11-30 03:34:23,684 INFO L176 IcfgInterpreter]: Starting interpretation [2020-11-30 03:34:23,684 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-11-30 03:34:23,749 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-11-30 03:34:23,773 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-11-30 03:34:24,411 INFO L180 IcfgInterpreter]: Interpretation finished [2020-11-30 03:34:24,680 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 46 [2020-11-30 03:34:25,137 WARN L193 SmtUtils]: Spent 417.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 53 [2020-11-30 03:34:25,335 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 42 [2020-11-30 03:34:25,539 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 44 [2020-11-30 03:34:25,882 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 50 [2020-11-30 03:34:26,200 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 42 [2020-11-30 03:34:26,539 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 52 [2020-11-30 03:34:26,938 WARN L193 SmtUtils]: Spent 336.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 47 [2020-11-30 03:34:26,940 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 03:34:26,941 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-30 03:34:26,941 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2020-11-30 03:34:26,941 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161269080] [2020-11-30 03:34:26,942 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-30 03:34:26,942 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 03:34:26,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-30 03:34:26,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2020-11-30 03:34:26,943 INFO L87 Difference]: Start difference. First operand 40 states and 42 transitions. Second operand 7 states. [2020-11-30 03:34:35,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 03:34:35,630 INFO L93 Difference]: Finished difference Result 78 states and 82 transitions. [2020-11-30 03:34:35,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-30 03:34:35,634 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 13 [2020-11-30 03:34:35,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 03:34:35,636 INFO L225 Difference]: With dead ends: 78 [2020-11-30 03:34:35,636 INFO L226 Difference]: Without dead ends: 70 [2020-11-30 03:34:35,637 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=77, Invalid=303, Unknown=0, NotChecked=0, Total=380 [2020-11-30 03:34:35,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-11-30 03:34:35,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 54. [2020-11-30 03:34:35,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-11-30 03:34:35,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 58 transitions. [2020-11-30 03:34:35,652 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 58 transitions. Word has length 13 [2020-11-30 03:34:35,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 03:34:35,653 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 58 transitions. [2020-11-30 03:34:35,653 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-30 03:34:35,653 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 58 transitions. [2020-11-30 03:34:35,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-30 03:34:35,654 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 03:34:35,655 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1] [2020-11-30 03:34:35,875 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 03:34:35,875 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 03:34:35,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 03:34:35,877 INFO L82 PathProgramCache]: Analyzing trace with hash -1660600465, now seen corresponding path program 1 times [2020-11-30 03:34:35,877 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 03:34:35,877 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675343572] [2020-11-30 03:34:35,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 03:34:35,887 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 03:34:35,887 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1684732073] [2020-11-30 03:34:35,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ec99515c-ee92-4c1c-8339-9c934851b2f8/bin/utaipan/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 03:34:35,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 03:34:35,964 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 15 conjunts are in the unsatisfiable core [2020-11-30 03:34:35,966 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 03:34:36,079 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 03:34:36,079 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 03:34:36,202 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-11-30 03:34:36,202 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675343572] [2020-11-30 03:34:36,203 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 03:34:36,203 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1684732073] [2020-11-30 03:34:36,203 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1438391462] [2020-11-30 03:34:36,207 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2020-11-30 03:34:36,207 INFO L166 IcfgInterpreter]: Building call graph [2020-11-30 03:34:36,208 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-11-30 03:34:36,208 INFO L176 IcfgInterpreter]: Starting interpretation [2020-11-30 03:34:36,208 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-11-30 03:34:36,250 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-11-30 03:34:36,340 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-11-30 03:34:36,770 INFO L180 IcfgInterpreter]: Interpretation finished [2020-11-30 03:34:37,121 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 48 [2020-11-30 03:34:37,573 WARN L193 SmtUtils]: Spent 403.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 53 [2020-11-30 03:34:37,839 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 42 [2020-11-30 03:34:38,033 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 44 [2020-11-30 03:34:38,543 WARN L193 SmtUtils]: Spent 306.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 50 [2020-11-30 03:34:38,778 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 42 [2020-11-30 03:34:39,122 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 52 [2020-11-30 03:34:39,538 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 47 [2020-11-30 03:34:39,540 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 03:34:39,540 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-30 03:34:39,540 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 3] total 6 [2020-11-30 03:34:39,540 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850673147] [2020-11-30 03:34:39,541 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-30 03:34:39,541 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 03:34:39,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-30 03:34:39,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2020-11-30 03:34:39,543 INFO L87 Difference]: Start difference. First operand 54 states and 58 transitions. Second operand 7 states. [2020-11-30 03:34:39,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 03:34:39,993 INFO L93 Difference]: Finished difference Result 60 states and 64 transitions. [2020-11-30 03:34:39,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-30 03:34:39,995 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 22 [2020-11-30 03:34:39,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 03:34:39,996 INFO L225 Difference]: With dead ends: 60 [2020-11-30 03:34:39,996 INFO L226 Difference]: Without dead ends: 44 [2020-11-30 03:34:39,998 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 50 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=68, Invalid=274, Unknown=0, NotChecked=0, Total=342 [2020-11-30 03:34:39,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-11-30 03:34:40,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2020-11-30 03:34:40,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-11-30 03:34:40,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 44 transitions. [2020-11-30 03:34:40,009 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 44 transitions. Word has length 22 [2020-11-30 03:34:40,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 03:34:40,010 INFO L481 AbstractCegarLoop]: Abstraction has 44 states and 44 transitions. [2020-11-30 03:34:40,010 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-30 03:34:40,010 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 44 transitions. [2020-11-30 03:34:40,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-11-30 03:34:40,012 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 03:34:40,012 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 1, 1, 1] [2020-11-30 03:34:40,239 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable89 [2020-11-30 03:34:40,239 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 03:34:40,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 03:34:40,240 INFO L82 PathProgramCache]: Analyzing trace with hash -533079956, now seen corresponding path program 2 times [2020-11-30 03:34:40,240 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 03:34:40,240 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535714260] [2020-11-30 03:34:40,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 03:34:40,253 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 03:34:40,262 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2072825535] [2020-11-30 03:34:40,262 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ec99515c-ee92-4c1c-8339-9c934851b2f8/bin/utaipan/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 03:34:40,342 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-11-30 03:34:40,342 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 03:34:40,343 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 17 conjunts are in the unsatisfiable core [2020-11-30 03:34:40,346 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 03:34:40,539 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 27 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-11-30 03:34:40,540 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 03:34:40,723 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 27 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-11-30 03:34:40,724 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535714260] [2020-11-30 03:34:40,724 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 03:34:40,725 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2072825535] [2020-11-30 03:34:40,726 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1609303751] [2020-11-30 03:34:40,738 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2020-11-30 03:34:40,739 INFO L166 IcfgInterpreter]: Building call graph [2020-11-30 03:34:40,739 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-11-30 03:34:40,739 INFO L176 IcfgInterpreter]: Starting interpretation [2020-11-30 03:34:40,741 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-11-30 03:34:40,778 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-11-30 03:34:40,868 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-11-30 03:34:41,303 INFO L180 IcfgInterpreter]: Interpretation finished [2020-11-30 03:34:41,580 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 41 [2020-11-30 03:34:41,943 WARN L193 SmtUtils]: Spent 305.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 53 [2020-11-30 03:34:42,398 WARN L193 SmtUtils]: Spent 402.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 62 [2020-11-30 03:34:42,830 WARN L193 SmtUtils]: Spent 379.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 55 [2020-11-30 03:34:43,519 WARN L193 SmtUtils]: Spent 601.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 62 [2020-11-30 03:34:43,804 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 44 [2020-11-30 03:34:46,236 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 52 [2020-11-30 03:34:48,887 WARN L193 SmtUtils]: Spent 374.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 47 [2020-11-30 03:34:48,890 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 03:34:48,890 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-30 03:34:48,891 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2020-11-30 03:34:48,891 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564377672] [2020-11-30 03:34:48,892 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-30 03:34:48,892 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 03:34:48,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-30 03:34:48,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=194, Unknown=2, NotChecked=0, Total=240 [2020-11-30 03:34:48,893 INFO L87 Difference]: Start difference. First operand 44 states and 44 transitions. Second operand 8 states. [2020-11-30 03:34:51,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 03:34:51,519 INFO L93 Difference]: Finished difference Result 44 states and 44 transitions. [2020-11-30 03:34:51,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-30 03:34:51,519 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 34 [2020-11-30 03:34:51,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 03:34:51,520 INFO L225 Difference]: With dead ends: 44 [2020-11-30 03:34:51,520 INFO L226 Difference]: Without dead ends: 0 [2020-11-30 03:34:51,521 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 83 SyntacticMatches, 3 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 8.2s TimeCoverageRelationStatistics Valid=74, Invalid=304, Unknown=2, NotChecked=0, Total=380 [2020-11-30 03:34:51,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-30 03:34:51,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-30 03:34:51,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-30 03:34:51,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-30 03:34:51,522 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 34 [2020-11-30 03:34:51,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 03:34:51,522 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-30 03:34:51,522 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-30 03:34:51,523 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-30 03:34:51,523 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-30 03:34:51,723 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 03:34:51,726 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-30 03:35:02,390 WARN L193 SmtUtils]: Spent 10.58 s on a formula simplification. DAG size of input: 42 DAG size of output: 28 [2020-11-30 03:35:13,450 WARN L193 SmtUtils]: Spent 11.06 s on a formula simplification. DAG size of input: 47 DAG size of output: 20 [2020-11-30 03:35:27,883 WARN L193 SmtUtils]: Spent 14.43 s on a formula simplification. DAG size of input: 46 DAG size of output: 25 [2020-11-30 03:35:41,321 WARN L193 SmtUtils]: Spent 13.44 s on a formula simplification. DAG size of input: 44 DAG size of output: 20 [2020-11-30 03:35:41,548 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 15 [2020-11-30 03:35:52,148 WARN L193 SmtUtils]: Spent 10.60 s on a formula simplification. DAG size of input: 47 DAG size of output: 20 [2020-11-30 03:35:52,151 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-11-30 03:35:52,151 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-11-30 03:35:52,151 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-11-30 03:35:52,151 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-30 03:35:52,151 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-11-30 03:35:52,151 INFO L274 CegarLoopResult]: For program point L12(lines 12 15) no Hoare annotation was computed. [2020-11-30 03:35:52,152 INFO L270 CegarLoopResult]: At program point L12-1(lines 11 17) the Hoare annotation is: (let ((.cse0 (* ULTIMATE.start_main_~a~0 2))) (and (= (+ (* ULTIMATE.start_main_~t~0 2) (* ULTIMATE.start_main_~t~0 ULTIMATE.start_main_~t~0) 1) (* ULTIMATE.start_main_~s~0 4)) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= (+ .cse0 1) ULTIMATE.start_main_~t~0) (= ULTIMATE.start_main_~s~0 (+ (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0) .cse0 1)))) [2020-11-30 03:35:52,152 INFO L274 CegarLoopResult]: For program point L12-2(lines 12 15) no Hoare annotation was computed. [2020-11-30 03:35:52,152 INFO L270 CegarLoopResult]: At program point L12-3(lines 11 17) the Hoare annotation is: (let ((.cse0 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0))) (and (= (+ (* ULTIMATE.start_main_~t~0 2) (* ULTIMATE.start_main_~t~0 ULTIMATE.start_main_~t~0) 1) (* ULTIMATE.start_main_~s~0 4)) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= ULTIMATE.start_main_~s~0 (+ .cse0 ULTIMATE.start_main_~t~0)) (= ULTIMATE.start_main_~s~0 (+ .cse0 (* ULTIMATE.start_main_~a~0 2) 1)))) [2020-11-30 03:35:52,153 INFO L274 CegarLoopResult]: For program point L12-4(lines 12 15) no Hoare annotation was computed. [2020-11-30 03:35:52,153 INFO L270 CegarLoopResult]: At program point L12-5(lines 36 37) the Hoare annotation is: (let ((.cse0 (* ULTIMATE.start_main_~a~0 2))) (and (= (+ (* ULTIMATE.start_main_~t~0 2) (* ULTIMATE.start_main_~t~0 ULTIMATE.start_main_~t~0) 1) (* ULTIMATE.start_main_~s~0 4)) (= (+ .cse0 1) ULTIMATE.start_main_~t~0) (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= ULTIMATE.start_main_~s~0 (+ (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0) .cse0 1)))) [2020-11-30 03:35:52,153 INFO L274 CegarLoopResult]: For program point L12-6(lines 12 15) no Hoare annotation was computed. [2020-11-30 03:35:52,153 INFO L270 CegarLoopResult]: At program point L12-7(lines 11 17) the Hoare annotation is: (or (let ((.cse0 (* ULTIMATE.start_main_~a~0 2))) (and (= (+ (* ULTIMATE.start_main_~t~0 2) (* ULTIMATE.start_main_~t~0 ULTIMATE.start_main_~t~0) 1) (* ULTIMATE.start_main_~s~0 4)) (= (+ .cse0 1) ULTIMATE.start_main_~t~0) (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= ULTIMATE.start_main_~s~0 (+ (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0) .cse0 1)))) (and (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) (= ULTIMATE.start_main_~s~0 1) (= ULTIMATE.start_main_~a~0 0) (= ULTIMATE.start_main_~t~0 1))) [2020-11-30 03:35:52,153 INFO L274 CegarLoopResult]: For program point L12-8(lines 12 15) no Hoare annotation was computed. [2020-11-30 03:35:52,154 INFO L270 CegarLoopResult]: At program point L12-9(lines 11 17) the Hoare annotation is: (and (= (+ (* ULTIMATE.start_main_~t~0 2) (* ULTIMATE.start_main_~t~0 ULTIMATE.start_main_~t~0) 1) (* ULTIMATE.start_main_~s~0 4)) (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond))) [2020-11-30 03:35:52,154 INFO L274 CegarLoopResult]: For program point L12-10(lines 12 15) no Hoare annotation was computed. [2020-11-30 03:35:52,154 INFO L270 CegarLoopResult]: At program point L12-11(lines 11 17) the Hoare annotation is: (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) [2020-11-30 03:35:52,154 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-30 03:35:52,154 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-11-30 03:35:52,154 INFO L274 CegarLoopResult]: For program point L13(lines 13 14) no Hoare annotation was computed. [2020-11-30 03:35:52,155 INFO L274 CegarLoopResult]: For program point L13-1(lines 13 14) no Hoare annotation was computed. [2020-11-30 03:35:52,155 INFO L274 CegarLoopResult]: For program point L13-2(lines 13 14) no Hoare annotation was computed. [2020-11-30 03:35:52,155 INFO L274 CegarLoopResult]: For program point L13-3(lines 13 14) no Hoare annotation was computed. [2020-11-30 03:35:52,155 INFO L274 CegarLoopResult]: For program point L13-4(lines 13 14) no Hoare annotation was computed. [2020-11-30 03:35:52,155 INFO L274 CegarLoopResult]: For program point L13-5(lines 13 14) no Hoare annotation was computed. [2020-11-30 03:35:52,155 INFO L270 CegarLoopResult]: At program point L30-2(lines 30 42) the Hoare annotation is: (let ((.cse1 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0))) (let ((.cse2 (* ULTIMATE.start_main_~a~0 2)) (.cse0 (= ULTIMATE.start_main_~s~0 (+ .cse1 ULTIMATE.start_main_~t~0)))) (or (and .cse0 (= ULTIMATE.start_main_~t~0 1) (= ULTIMATE.start_main_~s~0 (+ .cse1 .cse2 1))) (and (= (+ (* ULTIMATE.start_main_~t~0 2) (* ULTIMATE.start_main_~t~0 ULTIMATE.start_main_~t~0) 1) (* ULTIMATE.start_main_~s~0 4)) (= (+ .cse2 1) ULTIMATE.start_main_~t~0) (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) .cse0)))) [2020-11-30 03:35:52,155 INFO L274 CegarLoopResult]: For program point L30-3(lines 30 42) no Hoare annotation was computed. [2020-11-30 03:35:52,156 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-11-30 03:35:52,203 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 03:35:52 BoogieIcfgContainer [2020-11-30 03:35:52,203 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 03:35:52,204 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 03:35:52,204 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 03:35:52,204 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 03:35:52,205 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 03:34:14" (3/4) ... [2020-11-30 03:35:52,208 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-30 03:35:52,219 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2020-11-30 03:35:52,220 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2020-11-30 03:35:52,220 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-11-30 03:35:52,221 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-30 03:35:52,288 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_ec99515c-ee92-4c1c-8339-9c934851b2f8/bin/utaipan/witness.graphml [2020-11-30 03:35:52,288 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 03:35:52,290 INFO L168 Benchmark]: Toolchain (without parser) took 99076.55 ms. Allocated memory was 77.6 MB in the beginning and 188.7 MB in the end (delta: 111.1 MB). Free memory was 45.2 MB in the beginning and 162.0 MB in the end (delta: -116.8 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 03:35:52,290 INFO L168 Benchmark]: CDTParser took 0.39 ms. Allocated memory is still 77.6 MB. Free memory was 51.5 MB in the beginning and 51.5 MB in the end (delta: 26.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 03:35:52,291 INFO L168 Benchmark]: CACSL2BoogieTranslator took 408.59 ms. Allocated memory was 77.6 MB in the beginning and 107.0 MB in the end (delta: 29.4 MB). Free memory was 45.1 MB in the beginning and 84.1 MB in the end (delta: -39.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-30 03:35:52,292 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.87 ms. Allocated memory is still 107.0 MB. Free memory was 84.1 MB in the beginning and 82.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 03:35:52,292 INFO L168 Benchmark]: Boogie Preprocessor took 31.52 ms. Allocated memory is still 107.0 MB. Free memory was 82.6 MB in the beginning and 81.7 MB in the end (delta: 953.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 03:35:52,293 INFO L168 Benchmark]: RCFGBuilder took 1021.53 ms. Allocated memory is still 107.0 MB. Free memory was 81.7 MB in the beginning and 63.2 MB in the end (delta: 18.5 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. [2020-11-30 03:35:52,302 INFO L168 Benchmark]: TraceAbstraction took 97462.97 ms. Allocated memory was 107.0 MB in the beginning and 188.7 MB in the end (delta: 81.8 MB). Free memory was 62.8 MB in the beginning and 165.1 MB in the end (delta: -102.3 MB). Peak memory consumption was 94.2 MB. Max. memory is 16.1 GB. [2020-11-30 03:35:52,302 INFO L168 Benchmark]: Witness Printer took 84.64 ms. Allocated memory is still 188.7 MB. Free memory was 165.1 MB in the beginning and 162.0 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 03:35:52,306 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.39 ms. Allocated memory is still 77.6 MB. Free memory was 51.5 MB in the beginning and 51.5 MB in the end (delta: 26.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 408.59 ms. Allocated memory was 77.6 MB in the beginning and 107.0 MB in the end (delta: 29.4 MB). Free memory was 45.1 MB in the beginning and 84.1 MB in the end (delta: -39.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 50.87 ms. Allocated memory is still 107.0 MB. Free memory was 84.1 MB in the beginning and 82.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 31.52 ms. Allocated memory is still 107.0 MB. Free memory was 82.6 MB in the beginning and 81.7 MB in the end (delta: 953.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 1021.53 ms. Allocated memory is still 107.0 MB. Free memory was 81.7 MB in the beginning and 63.2 MB in the end (delta: 18.5 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 97462.97 ms. Allocated memory was 107.0 MB in the beginning and 188.7 MB in the end (delta: 81.8 MB). Free memory was 62.8 MB in the beginning and 165.1 MB in the end (delta: -102.3 MB). Peak memory consumption was 94.2 MB. Max. memory is 16.1 GB. * Witness Printer took 84.64 ms. Allocated memory is still 188.7 MB. Free memory was 165.1 MB in the beginning and 162.0 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 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 6 specifications checked. All of them hold - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: (((t * 2 + t * t + 1 == s * 4 && a * 2 + 1 == t) && 1 <= cond) && s == a * a + a * 2 + 1) || (((!(0 == cond) && s == 1) && a == 0) && t == 1) - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: ((t * 2 + t * t + 1 == s * 4 && 1 == cond) && a * 2 + 1 == t) && s == a * a + a * 2 + 1 - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: !(0 == cond) - InvariantResult [Line: 30]: Loop Invariant Derived loop invariant: ((s == a * a + t && t == 1) && s == a * a + a * 2 + 1) || (((t * 2 + t * t + 1 == s * 4 && a * 2 + 1 == t) && 1 <= cond) && s == a * a + t) - InvariantResult [Line: 36]: Loop Invariant Derived loop invariant: ((t * 2 + t * t + 1 == s * 4 && a * 2 + 1 == t) && 1 <= cond) && s == a * a + a * 2 + 1 - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: t * 2 + t * t + 1 == s * 4 && !(0 == cond) - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: ((t * 2 + t * t + 1 == s * 4 && 1 == cond) && s == a * a + t) && s == a * a + a * 2 + 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 28 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 36.8s, OverallIterations: 7, TraceHistogramMax: 5, AutomataDifference: 14.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 60.4s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 93 SDtfs, 216 SDslu, 200 SDs, 0 SdLazy, 352 SolverSat, 95 SolverUnsat, 6 SolverUnknown, 0 SolverNotchecked, 13.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 279 GetRequests, 190 SyntacticMatches, 9 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 17.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=54occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 47 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 36 NumberOfFragments, 220 HoareAnnotationTreeSize, 7 FomulaSimplifications, 881 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 753 FormulaSimplificationTreeSizeReductionInter, 60.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 98 NumberOfCodeBlocks, 77 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 179 ConstructedInterpolants, 0 QuantifiedInterpolants, 21743 SizeOfPredicates, 32 NumberOfNonLiveVariables, 451 ConjunctsInSsa, 72 ConjunctsInUnsatCore, 13 InterpolantComputations, 5 PerfectInterpolantSequences, 132/166 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...