./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_valuebound2.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_5891637b-1a28-450c-b403-f04cdcd25ebc/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_5891637b-1a28-450c-b403-f04cdcd25ebc/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_5891637b-1a28-450c-b403-f04cdcd25ebc/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_5891637b-1a28-450c-b403-f04cdcd25ebc/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_valuebound2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_5891637b-1a28-450c-b403-f04cdcd25ebc/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_5891637b-1a28-450c-b403-f04cdcd25ebc/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 bd22fe84d520ec30ecb06ab78e8b0a57d2fc3fd5 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 07:32:58,575 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 07:32:58,578 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 07:32:58,652 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 07:32:58,665 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 07:32:58,666 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 07:32:58,668 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 07:32:58,671 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 07:32:58,673 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 07:32:58,675 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 07:32:58,676 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 07:32:58,679 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 07:32:58,679 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 07:32:58,685 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 07:32:58,688 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 07:32:58,690 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 07:32:58,691 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 07:32:58,693 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 07:32:58,699 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 07:32:58,707 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 07:32:58,709 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 07:32:58,711 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 07:32:58,713 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 07:32:58,714 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 07:32:58,718 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 07:32:58,718 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 07:32:58,719 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 07:32:58,724 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 07:32:58,724 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 07:32:58,725 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 07:32:58,726 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 07:32:58,726 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 07:32:58,733 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 07:32:58,734 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 07:32:58,736 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 07:32:58,736 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 07:32:58,737 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 07:32:58,737 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 07:32:58,738 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 07:32:58,739 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 07:32:58,741 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 07:32:58,743 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_5891637b-1a28-450c-b403-f04cdcd25ebc/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-28 07:32:58,791 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 07:32:58,792 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 07:32:58,793 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-28 07:32:58,793 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-28 07:32:58,794 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-28 07:32:58,794 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-28 07:32:58,794 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-28 07:32:58,794 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-28 07:32:58,795 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-28 07:32:58,795 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-28 07:32:58,796 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-28 07:32:58,796 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-28 07:32:58,797 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-28 07:32:58,797 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-28 07:32:58,797 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-28 07:32:58,798 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 07:32:58,798 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 07:32:58,798 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 07:32:58,799 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 07:32:58,799 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 07:32:58,799 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 07:32:58,799 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 07:32:58,799 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 07:32:58,800 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-28 07:32:58,800 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 07:32:58,800 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 07:32:58,800 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 07:32:58,801 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 07:32:58,801 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 07:32:58,803 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 07:32:58,803 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 07:32:58,803 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:32:58,804 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 07:32:58,804 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 07:32:58,804 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 07:32:58,804 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-28 07:32:58,804 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 07:32:58,805 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 07:32:58,805 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 07:32:58,805 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-28 07:32:58,805 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_5891637b-1a28-450c-b403-f04cdcd25ebc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_5891637b-1a28-450c-b403-f04cdcd25ebc/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bd22fe84d520ec30ecb06ab78e8b0a57d2fc3fd5 [2020-11-28 07:32:59,149 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 07:32:59,188 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 07:32:59,193 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 07:32:59,194 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 07:32:59,195 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 07:32:59,196 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_5891637b-1a28-450c-b403-f04cdcd25ebc/bin/utaipan/../../sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_valuebound2.c [2020-11-28 07:32:59,272 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_5891637b-1a28-450c-b403-f04cdcd25ebc/bin/utaipan/data/74e67c3f0/db0d30eb511d45cead3aeea25486107b/FLAGea141d371 [2020-11-28 07:32:59,827 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 07:32:59,828 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_5891637b-1a28-450c-b403-f04cdcd25ebc/sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_valuebound2.c [2020-11-28 07:32:59,840 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_5891637b-1a28-450c-b403-f04cdcd25ebc/bin/utaipan/data/74e67c3f0/db0d30eb511d45cead3aeea25486107b/FLAGea141d371 [2020-11-28 07:33:00,156 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_5891637b-1a28-450c-b403-f04cdcd25ebc/bin/utaipan/data/74e67c3f0/db0d30eb511d45cead3aeea25486107b [2020-11-28 07:33:00,159 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 07:33:00,161 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 07:33:00,163 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 07:33:00,163 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 07:33:00,166 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 07:33:00,167 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:33:00" (1/1) ... [2020-11-28 07:33:00,169 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@751b0d0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:33:00, skipping insertion in model container [2020-11-28 07:33:00,169 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:33:00" (1/1) ... [2020-11-28 07:33:00,177 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 07:33:00,192 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 07:33:00,426 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:33:00,436 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 07:33:00,459 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:33:00,476 INFO L208 MainTranslator]: Completed translation [2020-11-28 07:33:00,476 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:33:00 WrapperNode [2020-11-28 07:33:00,476 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 07:33:00,478 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 07:33:00,478 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 07:33:00,478 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 07:33:00,488 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:33:00" (1/1) ... [2020-11-28 07:33:00,496 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:33:00" (1/1) ... [2020-11-28 07:33:00,519 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 07:33:00,520 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 07:33:00,520 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 07:33:00,521 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 07:33:00,530 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:33:00" (1/1) ... [2020-11-28 07:33:00,530 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:33:00" (1/1) ... [2020-11-28 07:33:00,533 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:33:00" (1/1) ... [2020-11-28 07:33:00,533 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:33:00" (1/1) ... [2020-11-28 07:33:00,539 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:33:00" (1/1) ... [2020-11-28 07:33:00,545 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:33:00" (1/1) ... [2020-11-28 07:33:00,547 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:33:00" (1/1) ... [2020-11-28 07:33:00,550 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 07:33:00,552 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 07:33:00,552 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 07:33:00,552 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 07:33:00,553 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:33:00" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5891637b-1a28-450c-b403-f04cdcd25ebc/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 07:33:00,625 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 07:33:00,625 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 07:33:00,625 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 07:33:00,625 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 07:33:01,325 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 07:33:01,325 INFO L298 CfgBuilder]: Removed 31 assume(true) statements. [2020-11-28 07:33:01,327 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:33:01 BoogieIcfgContainer [2020-11-28 07:33:01,327 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 07:33:01,329 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 07:33:01,330 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 07:33:01,335 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 07:33:01,335 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 07:33:00" (1/3) ... [2020-11-28 07:33:01,336 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76173329 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:33:01, skipping insertion in model container [2020-11-28 07:33:01,336 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:33:00" (2/3) ... [2020-11-28 07:33:01,337 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76173329 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:33:01, skipping insertion in model container [2020-11-28 07:33:01,337 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:33:01" (3/3) ... [2020-11-28 07:33:01,339 INFO L111 eAbstractionObserver]: Analyzing ICFG sqrt1-ll_valuebound2.c [2020-11-28 07:33:01,352 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 07:33:01,357 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-11-28 07:33:01,371 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-11-28 07:33:01,414 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 07:33:01,414 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 07:33:01,414 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 07:33:01,414 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 07:33:01,415 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 07:33:01,415 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 07:33:01,415 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 07:33:01,415 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 07:33:01,437 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2020-11-28 07:33:01,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-11-28 07:33:01,451 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:33:01,452 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-11-28 07:33:01,453 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]=== [2020-11-28 07:33:01,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:33:01,460 INFO L82 PathProgramCache]: Analyzing trace with hash 4158921, now seen corresponding path program 1 times [2020-11-28 07:33:01,471 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:33:01,472 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424754182] [2020-11-28 07:33:01,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:33:01,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:33:01,783 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 07:33:01,784 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424754182] [2020-11-28 07:33:01,785 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:33:01,786 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 07:33:01,790 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125264528] [2020-11-28 07:33:01,795 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 07:33:01,795 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:33:01,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 07:33:01,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 07:33:01,817 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 4 states. [2020-11-28 07:33:02,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:33:02,004 INFO L93 Difference]: Finished difference Result 78 states and 99 transitions. [2020-11-28 07:33:02,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 07:33:02,006 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2020-11-28 07:33:02,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:33:02,017 INFO L225 Difference]: With dead ends: 78 [2020-11-28 07:33:02,017 INFO L226 Difference]: Without dead ends: 47 [2020-11-28 07:33:02,021 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 [2020-11-28 07:33:02,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-11-28 07:33:02,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 35. [2020-11-28 07:33:02,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-11-28 07:33:02,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 38 transitions. [2020-11-28 07:33:02,065 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 38 transitions. Word has length 4 [2020-11-28 07:33:02,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:33:02,065 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 38 transitions. [2020-11-28 07:33:02,066 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 07:33:02,066 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 38 transitions. [2020-11-28 07:33:02,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-28 07:33:02,067 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:33:02,067 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-11-28 07:33:02,067 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 07:33:02,068 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]=== [2020-11-28 07:33:02,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:33:02,069 INFO L82 PathProgramCache]: Analyzing trace with hash -298057684, now seen corresponding path program 1 times [2020-11-28 07:33:02,069 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:33:02,070 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368353087] [2020-11-28 07:33:02,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:33:02,087 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 07:33:02,088 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [78596408] [2020-11-28 07:33:02,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5891637b-1a28-450c-b403-f04cdcd25ebc/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 07:33:02,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:33:02,141 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-28 07:33:02,146 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:33:02,205 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 07:33:02,205 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:33:02,220 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-28 07:33:02,235 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 07:33:02,236 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368353087] [2020-11-28 07:33:02,236 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 07:33:02,236 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [78596408] [2020-11-28 07:33:02,236 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:33:02,237 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-11-28 07:33:02,237 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543653790] [2020-11-28 07:33:02,238 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 07:33:02,238 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:33:02,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 07:33:02,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-28 07:33:02,239 INFO L87 Difference]: Start difference. First operand 35 states and 38 transitions. Second operand 5 states. [2020-11-28 07:33:02,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:33:02,355 INFO L93 Difference]: Finished difference Result 47 states and 47 transitions. [2020-11-28 07:33:02,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 07:33:02,356 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 6 [2020-11-28 07:33:02,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:33:02,357 INFO L225 Difference]: With dead ends: 47 [2020-11-28 07:33:02,357 INFO L226 Difference]: Without dead ends: 43 [2020-11-28 07:33:02,358 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 [2020-11-28 07:33:02,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-11-28 07:33:02,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 37. [2020-11-28 07:33:02,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-11-28 07:33:02,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 39 transitions. [2020-11-28 07:33:02,367 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 39 transitions. Word has length 6 [2020-11-28 07:33:02,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:33:02,367 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 39 transitions. [2020-11-28 07:33:02,367 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 07:33:02,367 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 39 transitions. [2020-11-28 07:33:02,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-28 07:33:02,368 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:33:02,368 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:33:02,595 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-11-28 07:33:02,596 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]=== [2020-11-28 07:33:02,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:33:02,597 INFO L82 PathProgramCache]: Analyzing trace with hash 1329561423, now seen corresponding path program 1 times [2020-11-28 07:33:02,597 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:33:02,597 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977800229] [2020-11-28 07:33:02,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:33:02,610 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 07:33:02,610 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1828244512] [2020-11-28 07:33:02,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5891637b-1a28-450c-b403-f04cdcd25ebc/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 [2020-11-28 07:33:02,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:33:02,658 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-28 07:33:02,659 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:33:02,690 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 07:33:02,691 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:33:02,723 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-28 07:33:02,736 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 07:33:02,736 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977800229] [2020-11-28 07:33:02,736 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 07:33:02,736 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1828244512] [2020-11-28 07:33:02,736 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:33:02,737 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-11-28 07:33:02,737 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945884708] [2020-11-28 07:33:02,737 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 07:33:02,737 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:33:02,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 07:33:02,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-28 07:33:02,738 INFO L87 Difference]: Start difference. First operand 37 states and 39 transitions. Second operand 5 states. [2020-11-28 07:33:05,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:33:05,022 INFO L93 Difference]: Finished difference Result 65 states and 67 transitions. [2020-11-28 07:33:05,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-28 07:33:05,023 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2020-11-28 07:33:05,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:33:05,024 INFO L225 Difference]: With dead ends: 65 [2020-11-28 07:33:05,024 INFO L226 Difference]: Without dead ends: 53 [2020-11-28 07:33:05,025 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-11-28 07:33:05,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-11-28 07:33:05,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 44. [2020-11-28 07:33:05,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-11-28 07:33:05,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 48 transitions. [2020-11-28 07:33:05,032 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 48 transitions. Word has length 8 [2020-11-28 07:33:05,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:33:05,033 INFO L481 AbstractCegarLoop]: Abstraction has 44 states and 48 transitions. [2020-11-28 07:33:05,033 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 07:33:05,033 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 48 transitions. [2020-11-28 07:33:05,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-28 07:33:05,034 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:33:05,034 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:33:05,242 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 07:33:05,243 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]=== [2020-11-28 07:33:05,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:33:05,244 INFO L82 PathProgramCache]: Analyzing trace with hash 781835680, now seen corresponding path program 1 times [2020-11-28 07:33:05,244 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:33:05,244 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524280288] [2020-11-28 07:33:05,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:33:05,257 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 07:33:05,258 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [856406119] [2020-11-28 07:33:05,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5891637b-1a28-450c-b403-f04cdcd25ebc/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 [2020-11-28 07:33:05,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:33:05,315 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-28 07:33:05,316 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:33:05,361 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:33:05,361 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:33:05,375 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-28 07:33:05,403 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-28 07:33:05,403 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524280288] [2020-11-28 07:33:05,404 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 07:33:05,404 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [856406119] [2020-11-28 07:33:05,404 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [942831555] [2020-11-28 07:33:05,428 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2020-11-28 07:33:05,428 INFO L166 IcfgInterpreter]: Building call graph [2020-11-28 07:33:05,432 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-11-28 07:33:05,437 INFO L176 IcfgInterpreter]: Starting interpretation [2020-11-28 07:33:05,438 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-11-28 07:33:05,562 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-11-28 07:33:05,577 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-11-28 07:33:06,270 INFO L180 IcfgInterpreter]: Interpretation finished [2020-11-28 07:33:06,477 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 41 [2020-11-28 07:33:06,876 WARN L193 SmtUtils]: Spent 368.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 53 [2020-11-28 07:33:07,070 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 42 [2020-11-28 07:33:07,275 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 44 [2020-11-28 07:33:07,577 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 49 [2020-11-28 07:33:07,930 WARN L193 SmtUtils]: Spent 309.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 44 [2020-11-28 07:33:08,214 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 51 [2020-11-28 07:33:08,504 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 46 [2020-11-28 07:33:08,505 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 07:33:08,506 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 07:33:08,506 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3] total 5 [2020-11-28 07:33:08,506 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631198860] [2020-11-28 07:33:08,506 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 07:33:08,506 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:33:08,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 07:33:08,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2020-11-28 07:33:08,508 INFO L87 Difference]: Start difference. First operand 44 states and 48 transitions. Second operand 6 states. [2020-11-28 07:33:08,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:33:08,710 INFO L93 Difference]: Finished difference Result 48 states and 50 transitions. [2020-11-28 07:33:08,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-28 07:33:08,711 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2020-11-28 07:33:08,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:33:08,711 INFO L225 Difference]: With dead ends: 48 [2020-11-28 07:33:08,712 INFO L226 Difference]: Without dead ends: 44 [2020-11-28 07:33:08,712 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2020-11-28 07:33:08,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-11-28 07:33:08,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 40. [2020-11-28 07:33:08,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-11-28 07:33:08,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 42 transitions. [2020-11-28 07:33:08,720 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 42 transitions. Word has length 11 [2020-11-28 07:33:08,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:33:08,720 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 42 transitions. [2020-11-28 07:33:08,721 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 07:33:08,721 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 42 transitions. [2020-11-28 07:33:08,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-28 07:33:08,721 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:33:08,721 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:33:08,941 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 07:33:08,942 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]=== [2020-11-28 07:33:08,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:33:08,942 INFO L82 PathProgramCache]: Analyzing trace with hash -275001789, now seen corresponding path program 1 times [2020-11-28 07:33:08,943 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:33:08,943 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760490358] [2020-11-28 07:33:08,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:33:08,955 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 07:33:08,955 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [233796465] [2020-11-28 07:33:08,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5891637b-1a28-450c-b403-f04cdcd25ebc/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 [2020-11-28 07:33:08,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:33:09,000 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 15 conjunts are in the unsatisfiable core [2020-11-28 07:33:09,001 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:33:09,088 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:33:09,089 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:33:09,155 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:33:09,155 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760490358] [2020-11-28 07:33:09,155 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 07:33:09,155 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [233796465] [2020-11-28 07:33:09,155 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1675664248] [2020-11-28 07:33:09,157 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2020-11-28 07:33:09,157 INFO L166 IcfgInterpreter]: Building call graph [2020-11-28 07:33:09,158 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-11-28 07:33:09,158 INFO L176 IcfgInterpreter]: Starting interpretation [2020-11-28 07:33:09,158 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-11-28 07:33:09,208 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-11-28 07:33:09,260 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-11-28 07:33:09,820 INFO L180 IcfgInterpreter]: Interpretation finished [2020-11-28 07:33:10,166 WARN L193 SmtUtils]: Spent 307.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 51 [2020-11-28 07:33:10,419 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 41 [2020-11-28 07:33:10,692 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 47 [2020-11-28 07:33:10,899 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 49 [2020-11-28 07:33:11,220 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 54 [2020-11-28 07:33:11,515 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 49 [2020-11-28 07:33:11,897 WARN L193 SmtUtils]: Spent 315.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 58 [2020-11-28 07:33:12,367 WARN L193 SmtUtils]: Spent 362.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 52 [2020-11-28 07:33:12,368 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 07:33:12,368 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 07:33:12,369 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2020-11-28 07:33:12,369 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740736891] [2020-11-28 07:33:12,369 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-28 07:33:12,369 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:33:12,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-28 07:33:12,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2020-11-28 07:33:12,370 INFO L87 Difference]: Start difference. First operand 40 states and 42 transitions. Second operand 7 states. [2020-11-28 07:33:23,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:33:23,115 INFO L93 Difference]: Finished difference Result 78 states and 82 transitions. [2020-11-28 07:33:23,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-28 07:33:23,118 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 13 [2020-11-28 07:33:23,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:33:23,119 INFO L225 Difference]: With dead ends: 78 [2020-11-28 07:33:23,119 INFO L226 Difference]: Without dead ends: 70 [2020-11-28 07:33:23,120 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=85, Invalid=295, Unknown=0, NotChecked=0, Total=380 [2020-11-28 07:33:23,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-11-28 07:33:23,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 54. [2020-11-28 07:33:23,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-11-28 07:33:23,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 58 transitions. [2020-11-28 07:33:23,146 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 58 transitions. Word has length 13 [2020-11-28 07:33:23,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:33:23,147 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 58 transitions. [2020-11-28 07:33:23,147 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-28 07:33:23,147 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 58 transitions. [2020-11-28 07:33:23,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-28 07:33:23,148 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:33:23,148 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1] [2020-11-28 07:33:23,361 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 07:33:23,361 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]=== [2020-11-28 07:33:23,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:33:23,362 INFO L82 PathProgramCache]: Analyzing trace with hash -1660600465, now seen corresponding path program 1 times [2020-11-28 07:33:23,362 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:33:23,362 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916888912] [2020-11-28 07:33:23,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:33:23,389 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 07:33:23,389 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1862813531] [2020-11-28 07:33:23,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5891637b-1a28-450c-b403-f04cdcd25ebc/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 [2020-11-28 07:33:23,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:33:23,460 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-28 07:33:23,463 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:33:23,544 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 12 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:33:23,544 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:33:23,570 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 12 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:33:23,571 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916888912] [2020-11-28 07:33:23,571 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 07:33:23,571 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1862813531] [2020-11-28 07:33:23,571 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [535977337] [2020-11-28 07:33:23,574 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2020-11-28 07:33:23,574 INFO L166 IcfgInterpreter]: Building call graph [2020-11-28 07:33:23,574 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-11-28 07:33:23,575 INFO L176 IcfgInterpreter]: Starting interpretation [2020-11-28 07:33:23,575 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-11-28 07:33:23,670 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-11-28 07:33:23,681 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-11-28 07:33:24,067 INFO L180 IcfgInterpreter]: Interpretation finished [2020-11-28 07:33:24,517 WARN L193 SmtUtils]: Spent 409.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 49 [2020-11-28 07:33:24,738 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 40 [2020-11-28 07:33:24,957 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 46 [2020-11-28 07:33:25,159 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 48 [2020-11-28 07:33:25,578 WARN L193 SmtUtils]: Spent 365.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 53 [2020-11-28 07:33:25,949 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 49 [2020-11-28 07:33:26,673 WARN L193 SmtUtils]: Spent 592.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 58 [2020-11-28 07:33:27,352 WARN L193 SmtUtils]: Spent 536.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 52 [2020-11-28 07:33:27,354 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 07:33:27,354 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 07:33:27,354 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2020-11-28 07:33:27,354 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107590631] [2020-11-28 07:33:27,355 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 07:33:27,355 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:33:27,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 07:33:27,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2020-11-28 07:33:27,356 INFO L87 Difference]: Start difference. First operand 54 states and 58 transitions. Second operand 6 states. [2020-11-28 07:33:27,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:33:27,437 INFO L93 Difference]: Finished difference Result 54 states and 58 transitions. [2020-11-28 07:33:27,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 07:33:27,443 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 22 [2020-11-28 07:33:27,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:33:27,444 INFO L225 Difference]: With dead ends: 54 [2020-11-28 07:33:27,444 INFO L226 Difference]: Without dead ends: 0 [2020-11-28 07:33:27,445 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-11-28 07:33:27,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-28 07:33:27,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-28 07:33:27,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-28 07:33:27,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-28 07:33:27,445 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 22 [2020-11-28 07:33:27,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:33:27,446 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 07:33:27,446 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 07:33:27,446 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-28 07:33:27,446 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-28 07:33:27,652 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable86 [2020-11-28 07:33:27,653 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-28 07:33:27,809 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 25 [2020-11-28 07:33:27,965 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 26 [2020-11-28 07:33:28,118 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 26 [2020-11-28 07:33:28,255 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 26 [2020-11-28 07:33:28,442 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 26 [2020-11-28 07:33:28,443 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-11-28 07:33:28,444 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-11-28 07:33:28,444 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-11-28 07:33:28,444 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-28 07:33:28,444 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-11-28 07:33:28,444 INFO L274 CegarLoopResult]: For program point L12(lines 12 15) no Hoare annotation was computed. [2020-11-28 07:33:28,444 INFO L270 CegarLoopResult]: At program point L12-1(lines 11 17) the Hoare annotation is: (let ((.cse0 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse1 (<= ULTIMATE.start_main_~n~0 2)) (.cse2 (<= 0 ULTIMATE.start_main_~n~0))) (or (and .cse0 .cse1 .cse2 (= ULTIMATE.start_main_~s~0 1) (= ULTIMATE.start_main_~a~0 0) (= ULTIMATE.start_main_~t~0 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)) (= ULTIMATE.start_main_~a~0 1) .cse0 .cse1 .cse2 (= ULTIMATE.start_main_~t~0 3)))) [2020-11-28 07:33:28,444 INFO L274 CegarLoopResult]: For program point L12-2(lines 12 15) no Hoare annotation was computed. [2020-11-28 07:33:28,445 INFO L270 CegarLoopResult]: At program point L12-3(lines 11 17) the Hoare annotation is: (let ((.cse0 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse1 (<= ULTIMATE.start_main_~n~0 2)) (.cse2 (<= 0 ULTIMATE.start_main_~n~0))) (or (and .cse0 .cse1 .cse2 (= ULTIMATE.start_main_~s~0 1) (= ULTIMATE.start_main_~a~0 0) (= ULTIMATE.start_main_~t~0 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)) (= ULTIMATE.start_main_~a~0 1) .cse0 .cse1 .cse2 (= ULTIMATE.start_main_~t~0 3)))) [2020-11-28 07:33:28,445 INFO L274 CegarLoopResult]: For program point L12-4(lines 12 15) no Hoare annotation was computed. [2020-11-28 07:33:28,445 INFO L270 CegarLoopResult]: At program point L12-5(lines 36 37) the Hoare annotation is: (let ((.cse0 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse1 (<= ULTIMATE.start_main_~n~0 2)) (.cse2 (<= 0 ULTIMATE.start_main_~n~0))) (or (and .cse0 .cse1 .cse2 (= ULTIMATE.start_main_~s~0 1) (= ULTIMATE.start_main_~a~0 0) (= ULTIMATE.start_main_~t~0 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)) (= ULTIMATE.start_main_~a~0 1) .cse0 .cse1 .cse2 (= ULTIMATE.start_main_~t~0 3)))) [2020-11-28 07:33:28,445 INFO L274 CegarLoopResult]: For program point L12-6(lines 12 15) no Hoare annotation was computed. [2020-11-28 07:33:28,445 INFO L270 CegarLoopResult]: At program point L12-7(lines 11 17) the Hoare annotation is: (or (and (= ULTIMATE.start_main_~a~0 1) (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= ULTIMATE.start_main_~t~0 3) (= (+ (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0) (* ULTIMATE.start_main_~a~0 4) 2) (+ ULTIMATE.start_main_~t~0 ULTIMATE.start_main_~s~0))) (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))) [2020-11-28 07:33:28,445 INFO L274 CegarLoopResult]: For program point L12-8(lines 12 15) no Hoare annotation was computed. [2020-11-28 07:33:28,446 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))) [2020-11-28 07:33:28,446 INFO L274 CegarLoopResult]: For program point L12-10(lines 12 15) no Hoare annotation was computed. [2020-11-28 07:33:28,446 INFO L270 CegarLoopResult]: At program point L12-11(lines 11 17) the Hoare annotation is: (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) [2020-11-28 07:33:28,446 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-28 07:33:28,446 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-11-28 07:33:28,446 INFO L274 CegarLoopResult]: For program point L13(lines 13 14) no Hoare annotation was computed. [2020-11-28 07:33:28,446 INFO L274 CegarLoopResult]: For program point L13-1(lines 13 14) no Hoare annotation was computed. [2020-11-28 07:33:28,446 INFO L274 CegarLoopResult]: For program point L13-2(lines 13 14) no Hoare annotation was computed. [2020-11-28 07:33:28,447 INFO L274 CegarLoopResult]: For program point L13-3(lines 13 14) no Hoare annotation was computed. [2020-11-28 07:33:28,447 INFO L274 CegarLoopResult]: For program point L13-4(lines 13 14) no Hoare annotation was computed. [2020-11-28 07:33:28,447 INFO L274 CegarLoopResult]: For program point L13-5(lines 13 14) no Hoare annotation was computed. [2020-11-28 07:33:28,447 INFO L270 CegarLoopResult]: At program point L30-2(lines 30 42) the Hoare annotation is: (let ((.cse0 (<= ULTIMATE.start_main_~n~0 2)) (.cse1 (<= 0 ULTIMATE.start_main_~n~0))) (or (and .cse0 .cse1 (= ULTIMATE.start_main_~s~0 1) (= ULTIMATE.start_main_~a~0 0) (= ULTIMATE.start_main_~t~0 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)) (= ULTIMATE.start_main_~a~0 1) (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) .cse0 .cse1 (= ULTIMATE.start_main_~t~0 3)))) [2020-11-28 07:33:28,447 INFO L274 CegarLoopResult]: For program point L30-3(lines 30 42) no Hoare annotation was computed. [2020-11-28 07:33:28,447 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-11-28 07:33:28,471 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 07:33:28 BoogieIcfgContainer [2020-11-28 07:33:28,471 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 07:33:28,472 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 07:33:28,472 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 07:33:28,472 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 07:33:28,473 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:33:01" (3/4) ... [2020-11-28 07:33:28,476 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-28 07:33:28,488 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2020-11-28 07:33:28,488 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2020-11-28 07:33:28,488 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-11-28 07:33:28,489 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 07:33:28,549 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_5891637b-1a28-450c-b403-f04cdcd25ebc/bin/utaipan/witness.graphml [2020-11-28 07:33:28,549 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 07:33:28,551 INFO L168 Benchmark]: Toolchain (without parser) took 28389.15 ms. Allocated memory was 92.3 MB in the beginning and 174.1 MB in the end (delta: 81.8 MB). Free memory was 72.6 MB in the beginning and 134.4 MB in the end (delta: -61.8 MB). Peak memory consumption was 18.2 MB. Max. memory is 16.1 GB. [2020-11-28 07:33:28,551 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 92.3 MB. Free memory was 53.8 MB in the beginning and 53.7 MB in the end (delta: 71.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:33:28,551 INFO L168 Benchmark]: CACSL2BoogieTranslator took 314.27 ms. Allocated memory is still 92.3 MB. Free memory was 72.4 MB in the beginning and 69.8 MB in the end (delta: 2.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 07:33:28,552 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.62 ms. Allocated memory is still 92.3 MB. Free memory was 69.8 MB in the beginning and 68.0 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:33:28,552 INFO L168 Benchmark]: Boogie Preprocessor took 30.58 ms. Allocated memory is still 92.3 MB. Free memory was 68.0 MB in the beginning and 67.0 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:33:28,553 INFO L168 Benchmark]: RCFGBuilder took 775.84 ms. Allocated memory is still 92.3 MB. Free memory was 67.0 MB in the beginning and 48.8 MB in the end (delta: 18.2 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. [2020-11-28 07:33:28,553 INFO L168 Benchmark]: TraceAbstraction took 27141.98 ms. Allocated memory was 92.3 MB in the beginning and 174.1 MB in the end (delta: 81.8 MB). Free memory was 48.2 MB in the beginning and 137.5 MB in the end (delta: -89.3 MB). Peak memory consumption was 83.2 MB. Max. memory is 16.1 GB. [2020-11-28 07:33:28,554 INFO L168 Benchmark]: Witness Printer took 77.84 ms. Allocated memory is still 174.1 MB. Free memory was 137.5 MB in the beginning and 134.4 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:33:28,556 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 92.3 MB. Free memory was 53.8 MB in the beginning and 53.7 MB in the end (delta: 71.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 314.27 ms. Allocated memory is still 92.3 MB. Free memory was 72.4 MB in the beginning and 69.8 MB in the end (delta: 2.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 41.62 ms. Allocated memory is still 92.3 MB. Free memory was 69.8 MB in the beginning and 68.0 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 30.58 ms. Allocated memory is still 92.3 MB. Free memory was 68.0 MB in the beginning and 67.0 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 775.84 ms. Allocated memory is still 92.3 MB. Free memory was 67.0 MB in the beginning and 48.8 MB in the end (delta: 18.2 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 27141.98 ms. Allocated memory was 92.3 MB in the beginning and 174.1 MB in the end (delta: 81.8 MB). Free memory was 48.2 MB in the beginning and 137.5 MB in the end (delta: -89.3 MB). Peak memory consumption was 83.2 MB. Max. memory is 16.1 GB. * Witness Printer took 77.84 ms. Allocated memory is still 174.1 MB. Free memory was 137.5 MB in the beginning and 134.4 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: (((a == 1 && 1 <= cond) && t == 3) && a * a + a * 4 + 2 == t + s) || (((!(0 == cond) && s == 1) && a == 0) && t == 1) - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: (((((1 <= cond && n <= 2) && 0 <= n) && s == 1) && a == 0) && t == 1) || (((((t * 2 + t * t + 1 == s * 4 && a == 1) && 1 <= cond) && n <= 2) && 0 <= n) && t == 3) - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: !(0 == cond) - InvariantResult [Line: 30]: Loop Invariant Derived loop invariant: ((((n <= 2 && 0 <= n) && s == 1) && a == 0) && t == 1) || (((((t * 2 + t * t + 1 == s * 4 && a == 1) && 1 <= cond) && n <= 2) && 0 <= n) && t == 3) - InvariantResult [Line: 36]: Loop Invariant Derived loop invariant: (((((1 <= cond && n <= 2) && 0 <= n) && s == 1) && a == 0) && t == 1) || (((((t * 2 + t * t + 1 == s * 4 && a == 1) && 1 <= cond) && n <= 2) && 0 <= n) && t == 3) - 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: (((((1 <= cond && n <= 2) && 0 <= n) && s == 1) && a == 0) && t == 1) || (((((t * 2 + t * t + 1 == s * 4 && a == 1) && 1 <= cond) && n <= 2) && 0 <= n) && t == 3) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 28 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 26.2s, OverallIterations: 6, TraceHistogramMax: 3, AutomataDifference: 13.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.7s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 84 SDtfs, 165 SDslu, 170 SDs, 0 SdLazy, 260 SolverSat, 77 SolverUnsat, 6 SolverUnknown, 0 SolverNotchecked, 12.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 172 GetRequests, 109 SyntacticMatches, 5 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 8.7s 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: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 47 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 21 NumberOfFragments, 247 HoareAnnotationTreeSize, 7 FomulaSimplifications, 140 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 195 FormulaSimplificationTreeSizeReductionInter, 0.7s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 64 NumberOfCodeBlocks, 64 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 113 ConstructedInterpolants, 0 QuantifiedInterpolants, 9818 SizeOfPredicates, 21 NumberOfNonLiveVariables, 373 ConjunctsInSsa, 50 ConjunctsInUnsatCore, 11 InterpolantComputations, 5 PerfectInterpolantSequences, 25/50 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...