./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound100.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_6c087dc7-048a-46f2-b7f6-03cbf11e7e9b/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_6c087dc7-048a-46f2-b7f6-03cbf11e7e9b/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_6c087dc7-048a-46f2-b7f6-03cbf11e7e9b/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_6c087dc7-048a-46f2-b7f6-03cbf11e7e9b/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound100.c -s /tmp/vcloud-vcloud-master/worker/run_dir_6c087dc7-048a-46f2-b7f6-03cbf11e7e9b/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_6c087dc7-048a-46f2-b7f6-03cbf11e7e9b/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 d514d33a8e8d6b0824f7f820c453be18b3da50b0 ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-22 13:06:40,485 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-22 13:06:40,487 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-22 13:06:40,537 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-22 13:06:40,538 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-22 13:06:40,544 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-22 13:06:40,548 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-22 13:06:40,556 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-22 13:06:40,560 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-22 13:06:40,567 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-22 13:06:40,568 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-22 13:06:40,571 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-22 13:06:40,571 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-22 13:06:40,576 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-22 13:06:40,578 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-22 13:06:40,582 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-22 13:06:40,583 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-22 13:06:40,585 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-22 13:06:40,592 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-22 13:06:40,601 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-22 13:06:40,603 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-22 13:06:40,605 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-22 13:06:40,608 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-22 13:06:40,610 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-22 13:06:40,620 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-22 13:06:40,621 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-22 13:06:40,622 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-22 13:06:40,632 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-22 13:06:40,632 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-22 13:06:40,634 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-22 13:06:40,635 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-22 13:06:40,636 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-22 13:06:40,639 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-22 13:06:40,640 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-22 13:06:40,642 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-22 13:06:40,642 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-22 13:06:40,644 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-22 13:06:40,644 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-22 13:06:40,644 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-22 13:06:40,646 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-22 13:06:40,648 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-22 13:06:40,651 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_6c087dc7-048a-46f2-b7f6-03cbf11e7e9b/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-22 13:06:40,703 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-22 13:06:40,707 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-22 13:06:40,709 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-22 13:06:40,709 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-22 13:06:40,709 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-22 13:06:40,710 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-22 13:06:40,710 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-22 13:06:40,710 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-22 13:06:40,711 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-22 13:06:40,711 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-22 13:06:40,712 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-22 13:06:40,713 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-22 13:06:40,713 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-22 13:06:40,714 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-22 13:06:40,714 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-22 13:06:40,715 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-22 13:06:40,715 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-22 13:06:40,716 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-22 13:06:40,716 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-22 13:06:40,716 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-22 13:06:40,721 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-22 13:06:40,721 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-22 13:06:40,722 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-22 13:06:40,722 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-22 13:06:40,722 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-22 13:06:40,723 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-22 13:06:40,723 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-22 13:06:40,724 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-22 13:06:40,724 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-22 13:06:40,726 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-22 13:06:40,726 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-22 13:06:40,727 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 13:06:40,727 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-22 13:06:40,727 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-22 13:06:40,728 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-22 13:06:40,728 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-22 13:06:40,728 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-22 13:06:40,729 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-22 13:06:40,729 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-22 13:06:40,729 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-22 13:06:40,730 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_6c087dc7-048a-46f2-b7f6-03cbf11e7e9b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_6c087dc7-048a-46f2-b7f6-03cbf11e7e9b/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d514d33a8e8d6b0824f7f820c453be18b3da50b0 [2020-11-22 13:06:41,041 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-22 13:06:41,070 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-22 13:06:41,074 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-22 13:06:41,075 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-22 13:06:41,076 INFO L275 PluginConnector]: CDTParser initialized [2020-11-22 13:06:41,077 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_6c087dc7-048a-46f2-b7f6-03cbf11e7e9b/bin/utaipan/../../sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound100.c [2020-11-22 13:06:41,157 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_6c087dc7-048a-46f2-b7f6-03cbf11e7e9b/bin/utaipan/data/b63220df1/9aa266f57f97422fa1dac34b369dd0da/FLAGde495c418 [2020-11-22 13:06:41,720 INFO L306 CDTParser]: Found 1 translation units. [2020-11-22 13:06:41,721 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_6c087dc7-048a-46f2-b7f6-03cbf11e7e9b/sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound100.c [2020-11-22 13:06:41,729 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_6c087dc7-048a-46f2-b7f6-03cbf11e7e9b/bin/utaipan/data/b63220df1/9aa266f57f97422fa1dac34b369dd0da/FLAGde495c418 [2020-11-22 13:06:42,035 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_6c087dc7-048a-46f2-b7f6-03cbf11e7e9b/bin/utaipan/data/b63220df1/9aa266f57f97422fa1dac34b369dd0da [2020-11-22 13:06:42,038 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-22 13:06:42,040 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-22 13:06:42,042 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-22 13:06:42,042 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-22 13:06:42,051 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-22 13:06:42,053 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:06:42" (1/1) ... [2020-11-22 13:06:42,056 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d166a93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:42, skipping insertion in model container [2020-11-22 13:06:42,057 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:06:42" (1/1) ... [2020-11-22 13:06:42,066 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-22 13:06:42,093 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-22 13:06:42,352 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 13:06:42,363 INFO L203 MainTranslator]: Completed pre-run [2020-11-22 13:06:42,392 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 13:06:42,409 INFO L208 MainTranslator]: Completed translation [2020-11-22 13:06:42,410 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:42 WrapperNode [2020-11-22 13:06:42,410 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-22 13:06:42,412 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-22 13:06:42,412 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-22 13:06:42,413 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-22 13:06:42,422 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:42" (1/1) ... [2020-11-22 13:06:42,430 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:42" (1/1) ... [2020-11-22 13:06:42,458 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-22 13:06:42,459 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-22 13:06:42,459 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-22 13:06:42,460 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-22 13:06:42,469 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:42" (1/1) ... [2020-11-22 13:06:42,470 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:42" (1/1) ... [2020-11-22 13:06:42,472 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:42" (1/1) ... [2020-11-22 13:06:42,473 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:42" (1/1) ... [2020-11-22 13:06:42,479 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:42" (1/1) ... [2020-11-22 13:06:42,484 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:42" (1/1) ... [2020-11-22 13:06:42,487 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:42" (1/1) ... [2020-11-22 13:06:42,490 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-22 13:06:42,492 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-22 13:06:42,492 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-22 13:06:42,492 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-22 13:06:42,498 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:42" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6c087dc7-048a-46f2-b7f6-03cbf11e7e9b/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 [2020-11-22 13:06:42,589 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-22 13:06:42,589 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-22 13:06:42,589 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-22 13:06:42,590 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-22 13:06:43,454 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-22 13:06:43,454 INFO L298 CfgBuilder]: Removed 42 assume(true) statements. [2020-11-22 13:06:43,457 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:06:43 BoogieIcfgContainer [2020-11-22 13:06:43,457 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-22 13:06:43,461 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-22 13:06:43,463 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-22 13:06:43,467 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-22 13:06:43,467 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 01:06:42" (1/3) ... [2020-11-22 13:06:43,468 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@459dde27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:06:43, skipping insertion in model container [2020-11-22 13:06:43,468 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:42" (2/3) ... [2020-11-22 13:06:43,469 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@459dde27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:06:43, skipping insertion in model container [2020-11-22 13:06:43,469 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:06:43" (3/3) ... [2020-11-22 13:06:43,471 INFO L111 eAbstractionObserver]: Analyzing ICFG egcd2-ll_valuebound100.c [2020-11-22 13:06:43,487 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-22 13:06:43,492 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-11-22 13:06:43,505 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-11-22 13:06:43,545 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-22 13:06:43,546 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-22 13:06:43,546 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-22 13:06:43,546 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-22 13:06:43,546 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-22 13:06:43,546 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-22 13:06:43,547 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-22 13:06:43,547 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-22 13:06:43,567 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2020-11-22 13:06:43,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-11-22 13:06:43,573 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:06:43,574 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-11-22 13:06:43,575 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]=== [2020-11-22 13:06:43,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:06:43,583 INFO L82 PathProgramCache]: Analyzing trace with hash 195435012, now seen corresponding path program 1 times [2020-11-22 13:06:43,595 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:06:43,596 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590898423] [2020-11-22 13:06:43,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:06:43,680 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-22 13:06:43,681 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1926603702] [2020-11-22 13:06:43,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6c087dc7-048a-46f2-b7f6-03cbf11e7e9b/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 [2020-11-22 13:06:43,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:06:43,758 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 1 conjunts are in the unsatisfiable core [2020-11-22 13:06:43,763 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:06:43,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:06:43,781 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:06:43,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:06:43,785 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590898423] [2020-11-22 13:06:43,785 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-22 13:06:43,785 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1926603702] [2020-11-22 13:06:43,786 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:06:43,786 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-11-22 13:06:43,787 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85366435] [2020-11-22 13:06:43,792 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-22 13:06:43,793 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:06:43,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-22 13:06:43,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-22 13:06:43,822 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 2 states. [2020-11-22 13:06:43,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:06:43,850 INFO L93 Difference]: Finished difference Result 61 states and 79 transitions. [2020-11-22 13:06:43,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-22 13:06:43,852 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 5 [2020-11-22 13:06:43,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:06:43,878 INFO L225 Difference]: With dead ends: 61 [2020-11-22 13:06:43,879 INFO L226 Difference]: Without dead ends: 29 [2020-11-22 13:06:43,883 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-22 13:06:43,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-11-22 13:06:43,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-11-22 13:06:43,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-11-22 13:06:43,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 30 transitions. [2020-11-22 13:06:43,933 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 30 transitions. Word has length 5 [2020-11-22 13:06:43,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:06:43,933 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 30 transitions. [2020-11-22 13:06:43,934 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-22 13:06:43,934 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 30 transitions. [2020-11-22 13:06:43,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-22 13:06:43,934 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:06:43,935 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-11-22 13:06:44,149 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2020-11-22 13:06:44,150 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]=== [2020-11-22 13:06:44,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:06:44,150 INFO L82 PathProgramCache]: Analyzing trace with hash 1652424623, now seen corresponding path program 1 times [2020-11-22 13:06:44,151 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:06:44,151 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387072596] [2020-11-22 13:06:44,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:06:44,157 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-22 13:06:44,157 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [829166692] [2020-11-22 13:06:44,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6c087dc7-048a-46f2-b7f6-03cbf11e7e9b/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 [2020-11-22 13:06:44,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:06:44,238 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-22 13:06:44,239 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:06:44,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:06:44,297 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:06:44,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:06:44,304 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387072596] [2020-11-22 13:06:44,304 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-22 13:06:44,304 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [829166692] [2020-11-22 13:06:44,305 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:06:44,305 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-11-22 13:06:44,305 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325302780] [2020-11-22 13:06:44,306 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 13:06:44,307 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:06:44,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 13:06:44,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 13:06:44,308 INFO L87 Difference]: Start difference. First operand 29 states and 30 transitions. Second operand 3 states. [2020-11-22 13:06:44,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:06:44,360 INFO L93 Difference]: Finished difference Result 57 states and 59 transitions. [2020-11-22 13:06:44,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 13:06:44,361 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-11-22 13:06:44,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:06:44,363 INFO L225 Difference]: With dead ends: 57 [2020-11-22 13:06:44,363 INFO L226 Difference]: Without dead ends: 49 [2020-11-22 13:06:44,364 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 13:06:44,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-11-22 13:06:44,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 31. [2020-11-22 13:06:44,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-11-22 13:06:44,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 32 transitions. [2020-11-22 13:06:44,371 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 32 transitions. Word has length 6 [2020-11-22 13:06:44,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:06:44,372 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 32 transitions. [2020-11-22 13:06:44,372 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 13:06:44,372 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 32 transitions. [2020-11-22 13:06:44,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-22 13:06:44,373 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:06:44,373 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-11-22 13:06:44,587 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-22 13:06:44,588 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]=== [2020-11-22 13:06:44,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:06:44,589 INFO L82 PathProgramCache]: Analyzing trace with hash 1652424625, now seen corresponding path program 1 times [2020-11-22 13:06:44,589 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:06:44,589 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180581230] [2020-11-22 13:06:44,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:06:44,598 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-22 13:06:44,599 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1185656216] [2020-11-22 13:06:44,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6c087dc7-048a-46f2-b7f6-03cbf11e7e9b/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 [2020-11-22 13:06:44,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:06:44,680 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-22 13:06:44,682 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:06:44,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:06:44,731 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:06:44,751 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-22 13:06:44,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:06:44,790 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180581230] [2020-11-22 13:06:44,791 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-22 13:06:44,791 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1185656216] [2020-11-22 13:06:44,791 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:06:44,791 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2020-11-22 13:06:44,791 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412866617] [2020-11-22 13:06:44,792 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-22 13:06:44,792 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:06:44,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-22 13:06:44,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-22 13:06:44,793 INFO L87 Difference]: Start difference. First operand 31 states and 32 transitions. Second operand 6 states. [2020-11-22 13:06:47,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:06:47,105 INFO L93 Difference]: Finished difference Result 99 states and 106 transitions. [2020-11-22 13:06:47,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-22 13:06:47,105 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 6 [2020-11-22 13:06:47,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:06:47,108 INFO L225 Difference]: With dead ends: 99 [2020-11-22 13:06:47,108 INFO L226 Difference]: Without dead ends: 97 [2020-11-22 13:06:47,109 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2020-11-22 13:06:47,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-11-22 13:06:47,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 42. [2020-11-22 13:06:47,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-11-22 13:06:47,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 47 transitions. [2020-11-22 13:06:47,119 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 47 transitions. Word has length 6 [2020-11-22 13:06:47,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:06:47,119 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 47 transitions. [2020-11-22 13:06:47,119 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-22 13:06:47,119 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 47 transitions. [2020-11-22 13:06:47,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-22 13:06:47,120 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:06:47,120 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:06:47,329 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-22 13:06:47,330 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]=== [2020-11-22 13:06:47,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:06:47,330 INFO L82 PathProgramCache]: Analyzing trace with hash -1157646828, now seen corresponding path program 1 times [2020-11-22 13:06:47,331 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:06:47,331 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440416856] [2020-11-22 13:06:47,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:06:47,345 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-22 13:06:47,345 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1014970121] [2020-11-22 13:06:47,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6c087dc7-048a-46f2-b7f6-03cbf11e7e9b/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 [2020-11-22 13:06:47,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:06:47,397 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-22 13:06:47,398 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:06:47,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:06:47,436 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:06:47,447 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-22 13:06:47,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:06:47,468 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440416856] [2020-11-22 13:06:47,469 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-22 13:06:47,469 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1014970121] [2020-11-22 13:06:47,469 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:06:47,469 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-11-22 13:06:47,469 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308509953] [2020-11-22 13:06:47,470 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-22 13:06:47,470 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:06:47,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-22 13:06:47,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-22 13:06:47,474 INFO L87 Difference]: Start difference. First operand 42 states and 47 transitions. Second operand 5 states. [2020-11-22 13:06:47,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:06:47,587 INFO L93 Difference]: Finished difference Result 62 states and 68 transitions. [2020-11-22 13:06:47,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-22 13:06:47,589 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2020-11-22 13:06:47,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:06:47,590 INFO L225 Difference]: With dead ends: 62 [2020-11-22 13:06:47,590 INFO L226 Difference]: Without dead ends: 60 [2020-11-22 13:06:47,590 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-11-22 13:06:47,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-11-22 13:06:47,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 53. [2020-11-22 13:06:47,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-11-22 13:06:47,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 61 transitions. [2020-11-22 13:06:47,605 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 61 transitions. Word has length 8 [2020-11-22 13:06:47,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:06:47,606 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 61 transitions. [2020-11-22 13:06:47,606 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-22 13:06:47,606 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 61 transitions. [2020-11-22 13:06:47,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-22 13:06:47,607 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:06:47,607 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:06:47,825 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-22 13:06:47,825 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]=== [2020-11-22 13:06:47,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:06:47,826 INFO L82 PathProgramCache]: Analyzing trace with hash -101883593, now seen corresponding path program 1 times [2020-11-22 13:06:47,826 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:06:47,826 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124692569] [2020-11-22 13:06:47,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:06:47,830 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-22 13:06:47,831 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1521030505] [2020-11-22 13:06:47,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6c087dc7-048a-46f2-b7f6-03cbf11e7e9b/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 [2020-11-22 13:06:47,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:06:47,887 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-22 13:06:47,887 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:06:47,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:06:47,929 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:06:47,955 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-22 13:06:47,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:06:47,958 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124692569] [2020-11-22 13:06:47,958 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-22 13:06:47,958 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1521030505] [2020-11-22 13:06:47,959 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:06:47,959 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 2] imperfect sequences [] total 3 [2020-11-22 13:06:47,959 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807521879] [2020-11-22 13:06:47,959 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 13:06:47,959 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:06:47,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 13:06:47,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-22 13:06:47,961 INFO L87 Difference]: Start difference. First operand 53 states and 61 transitions. Second operand 4 states. [2020-11-22 13:06:47,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:06:47,962 INFO L93 Difference]: Finished difference Result 53 states and 61 transitions. [2020-11-22 13:06:47,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-22 13:06:47,963 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-11-22 13:06:47,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:06:47,963 INFO L225 Difference]: With dead ends: 53 [2020-11-22 13:06:47,963 INFO L226 Difference]: Without dead ends: 0 [2020-11-22 13:06:47,964 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-22 13:06:47,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-22 13:06:47,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-22 13:06:47,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-22 13:06:47,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-22 13:06:47,964 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2020-11-22 13:06:47,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:06:47,965 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-22 13:06:47,969 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 13:06:47,969 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-22 13:06:47,969 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-22 13:06:48,170 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-22 13:06:48,171 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-22 13:06:48,213 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-22 13:06:48,214 INFO L274 CegarLoopResult]: For program point L11(lines 11 14) no Hoare annotation was computed. [2020-11-22 13:06:48,214 INFO L270 CegarLoopResult]: At program point L11-1(lines 10 16) the Hoare annotation is: false [2020-11-22 13:06:48,214 INFO L274 CegarLoopResult]: For program point L11-2(lines 11 14) no Hoare annotation was computed. [2020-11-22 13:06:48,214 INFO L270 CegarLoopResult]: At program point L11-3(lines 10 16) the Hoare annotation is: false [2020-11-22 13:06:48,214 INFO L274 CegarLoopResult]: For program point L11-4(lines 11 14) no Hoare annotation was computed. [2020-11-22 13:06:48,214 INFO L270 CegarLoopResult]: At program point L11-5(lines 10 16) the Hoare annotation is: false [2020-11-22 13:06:48,215 INFO L274 CegarLoopResult]: For program point L11-6(lines 11 14) no Hoare annotation was computed. [2020-11-22 13:06:48,215 INFO L270 CegarLoopResult]: At program point L11-7(lines 52 53) the Hoare annotation is: false [2020-11-22 13:06:48,215 INFO L274 CegarLoopResult]: For program point L11-8(lines 11 14) no Hoare annotation was computed. [2020-11-22 13:06:48,215 INFO L270 CegarLoopResult]: At program point L11-9(lines 10 16) the Hoare annotation is: false [2020-11-22 13:06:48,215 INFO L274 CegarLoopResult]: For program point L11-10(lines 11 14) no Hoare annotation was computed. [2020-11-22 13:06:48,215 INFO L277 CegarLoopResult]: At program point L11-11(lines 10 16) the Hoare annotation is: true [2020-11-22 13:06:48,215 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-22 13:06:48,215 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-22 13:06:48,215 INFO L274 CegarLoopResult]: For program point L12(lines 12 13) no Hoare annotation was computed. [2020-11-22 13:06:48,216 INFO L274 CegarLoopResult]: For program point L12-1(lines 12 13) no Hoare annotation was computed. [2020-11-22 13:06:48,216 INFO L274 CegarLoopResult]: For program point L12-2(lines 12 13) no Hoare annotation was computed. [2020-11-22 13:06:48,216 INFO L274 CegarLoopResult]: For program point L12-3(lines 12 13) no Hoare annotation was computed. [2020-11-22 13:06:48,216 INFO L274 CegarLoopResult]: For program point L12-4(lines 12 13) no Hoare annotation was computed. [2020-11-22 13:06:48,216 INFO L274 CegarLoopResult]: For program point L12-5(lines 12 13) no Hoare annotation was computed. [2020-11-22 13:06:48,216 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-22 13:06:48,216 INFO L270 CegarLoopResult]: At program point L47-2(lines 47 56) the Hoare annotation is: false [2020-11-22 13:06:48,216 INFO L274 CegarLoopResult]: For program point L47-3(lines 47 56) no Hoare annotation was computed. [2020-11-22 13:06:48,217 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-22 13:06:48,217 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-22 13:06:48,217 INFO L270 CegarLoopResult]: At program point L41-1(lines 7 68) the Hoare annotation is: false [2020-11-22 13:06:48,217 INFO L274 CegarLoopResult]: For program point L41-2(lines 41 68) no Hoare annotation was computed. [2020-11-22 13:06:48,217 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-22 13:06:48,217 INFO L274 CegarLoopResult]: For program point L42(lines 42 43) no Hoare annotation was computed. [2020-11-22 13:06:48,217 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-22 13:06:48,227 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 01:06:48 BoogieIcfgContainer [2020-11-22 13:06:48,227 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-22 13:06:48,228 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-22 13:06:48,228 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-22 13:06:48,228 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-22 13:06:48,229 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:06:43" (3/4) ... [2020-11-22 13:06:48,232 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-22 13:06:48,245 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 28 nodes and edges [2020-11-22 13:06:48,246 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2020-11-22 13:06:48,247 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2020-11-22 13:06:48,247 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-22 13:06:48,341 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_6c087dc7-048a-46f2-b7f6-03cbf11e7e9b/bin/utaipan/witness.graphml [2020-11-22 13:06:48,341 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-22 13:06:48,343 INFO L168 Benchmark]: Toolchain (without parser) took 6301.78 ms. Allocated memory was 86.0 MB in the beginning and 111.1 MB in the end (delta: 25.2 MB). Free memory was 60.1 MB in the beginning and 87.4 MB in the end (delta: -27.3 MB). Peak memory consumption was 47.8 MB. Max. memory is 16.1 GB. [2020-11-22 13:06:48,344 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 71.3 MB. Free memory is still 44.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 13:06:48,344 INFO L168 Benchmark]: CACSL2BoogieTranslator took 368.84 ms. Allocated memory is still 86.0 MB. Free memory was 59.8 MB in the beginning and 59.0 MB in the end (delta: 799.2 kB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-11-22 13:06:48,345 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.31 ms. Allocated memory is still 86.0 MB. Free memory was 59.0 MB in the beginning and 57.2 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 13:06:48,345 INFO L168 Benchmark]: Boogie Preprocessor took 31.66 ms. Allocated memory is still 86.0 MB. Free memory was 57.2 MB in the beginning and 55.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 13:06:48,346 INFO L168 Benchmark]: RCFGBuilder took 966.47 ms. Allocated memory is still 86.0 MB. Free memory was 55.9 MB in the beginning and 56.2 MB in the end (delta: -327.4 kB). Peak memory consumption was 27.3 MB. Max. memory is 16.1 GB. [2020-11-22 13:06:48,347 INFO L168 Benchmark]: TraceAbstraction took 4766.22 ms. Allocated memory was 86.0 MB in the beginning and 111.1 MB in the end (delta: 25.2 MB). Free memory was 55.8 MB in the beginning and 41.1 MB in the end (delta: 14.7 MB). Peak memory consumption was 41.1 MB. Max. memory is 16.1 GB. [2020-11-22 13:06:48,347 INFO L168 Benchmark]: Witness Printer took 113.60 ms. Allocated memory is still 111.1 MB. Free memory was 41.1 MB in the beginning and 87.4 MB in the end (delta: -46.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-22 13:06:48,350 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 71.3 MB. Free memory is still 44.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 368.84 ms. Allocated memory is still 86.0 MB. Free memory was 59.8 MB in the beginning and 59.0 MB in the end (delta: 799.2 kB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 46.31 ms. Allocated memory is still 86.0 MB. Free memory was 59.0 MB in the beginning and 57.2 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 31.66 ms. Allocated memory is still 86.0 MB. Free memory was 57.2 MB in the beginning and 55.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 966.47 ms. Allocated memory is still 86.0 MB. Free memory was 55.9 MB in the beginning and 56.2 MB in the end (delta: -327.4 kB). Peak memory consumption was 27.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4766.22 ms. Allocated memory was 86.0 MB in the beginning and 111.1 MB in the end (delta: 25.2 MB). Free memory was 55.8 MB in the beginning and 41.1 MB in the end (delta: 14.7 MB). Peak memory consumption was 41.1 MB. Max. memory is 16.1 GB. * Witness Printer took 113.60 ms. Allocated memory is still 111.1 MB. Free memory was 41.1 MB in the beginning and 87.4 MB in the end (delta: -46.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 4]: 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: 10]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 47]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 7]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 52]: Loop Invariant Derived loop invariant: 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 31 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.6s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 2.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 99 SDtfs, 138 SDslu, 112 SDs, 0 SdLazy, 106 SolverSat, 10 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 2.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 65 GetRequests, 46 SyntacticMatches, 4 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=53occurred in iteration=4, 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, 5 MinimizatonAttempts, 80 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 8 PreInvPairs, 9 NumberOfFragments, 8 HoareAnnotationTreeSize, 8 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 35 NumberOfCodeBlocks, 35 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 60 ConstructedInterpolants, 0 QuantifiedInterpolants, 1878 SizeOfPredicates, 25 NumberOfNonLiveVariables, 397 ConjunctsInSsa, 32 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...