./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/geo1-ll_valuebound1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e48539a6-3766-4828-88d0-4620671806d7/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e48539a6-3766-4828-88d0-4620671806d7/bin/utaipan-WLngWcDbfI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e48539a6-3766-4828-88d0-4620671806d7/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e48539a6-3766-4828-88d0-4620671806d7/bin/utaipan-WLngWcDbfI/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/geo1-ll_valuebound1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e48539a6-3766-4828-88d0-4620671806d7/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e48539a6-3766-4828-88d0-4620671806d7/bin/utaipan-WLngWcDbfI --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 de740cb7316ae9c63e2c3ee48446f6a3df9739b5 ........................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2021-10-11 02:32:32,347 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:32:32,362 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:32:32,429 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:32:32,430 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:32:32,436 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:32:32,440 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:32:32,445 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:32:32,449 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:32:32,456 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:32:32,457 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:32:32,459 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:32:32,460 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:32:32,464 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:32:32,466 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:32:32,468 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:32:32,470 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:32:32,475 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:32:32,478 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:32:32,488 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:32:32,490 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:32:32,492 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:32:32,496 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:32:32,498 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:32:32,508 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:32:32,509 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:32:32,509 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:32:32,512 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:32:32,513 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:32:32,515 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:32:32,515 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:32:32,516 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:32:32,519 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:32:32,521 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:32:32,522 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:32:32,523 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:32:32,524 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:32:32,524 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:32:32,525 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:32:32,526 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:32:32,527 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:32:32,530 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e48539a6-3766-4828-88d0-4620671806d7/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-11 02:32:32,583 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:32:32,583 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:32:32,585 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:32:32,585 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:32:32,585 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:32:32,585 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:32:32,586 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-11 02:32:32,586 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:32:32,586 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:32:32,586 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-11 02:32:32,588 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-11 02:32:32,588 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:32:32,588 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-11 02:32:32,588 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-11 02:32:32,589 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-11 02:32:32,590 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:32:32,590 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:32:32,590 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:32:32,591 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:32:32,591 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:32:32,591 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 02:32:32,591 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:32:32,592 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 02:32:32,592 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:32:32,592 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:32:32,592 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 02:32:32,593 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:32:32,593 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 02:32:32,593 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:32:32,595 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:32:32,595 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:32:32,596 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:32:32,596 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:32:32,596 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 02:32:32,597 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-11 02:32:32,597 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 02:32:32,597 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 02:32:32,597 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:32:32,598 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:32:32,598 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_worker_vcloud-master_on_vcloud-master/run_dir_e48539a6-3766-4828-88d0-4620671806d7/bin/utaipan-WLngWcDbfI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e48539a6-3766-4828-88d0-4620671806d7/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> de740cb7316ae9c63e2c3ee48446f6a3df9739b5 [2021-10-11 02:32:32,963 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:32:33,002 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:32:33,005 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:32:33,007 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:32:33,013 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:32:33,014 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e48539a6-3766-4828-88d0-4620671806d7/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/nla-digbench-scaling/geo1-ll_valuebound1.c [2021-10-11 02:32:33,124 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e48539a6-3766-4828-88d0-4620671806d7/bin/utaipan-WLngWcDbfI/data/2f2d4550b/4b32cf36ebf545ca9170c005b53a5eb7/FLAGb21d21b7a [2021-10-11 02:32:33,744 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:32:33,745 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e48539a6-3766-4828-88d0-4620671806d7/sv-benchmarks/c/nla-digbench-scaling/geo1-ll_valuebound1.c [2021-10-11 02:32:33,758 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e48539a6-3766-4828-88d0-4620671806d7/bin/utaipan-WLngWcDbfI/data/2f2d4550b/4b32cf36ebf545ca9170c005b53a5eb7/FLAGb21d21b7a [2021-10-11 02:32:34,103 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e48539a6-3766-4828-88d0-4620671806d7/bin/utaipan-WLngWcDbfI/data/2f2d4550b/4b32cf36ebf545ca9170c005b53a5eb7 [2021-10-11 02:32:34,105 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:32:34,107 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:32:34,109 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:32:34,109 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:32:34,113 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:32:34,114 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:32:34" (1/1) ... [2021-10-11 02:32:34,116 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14780f7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:34, skipping insertion in model container [2021-10-11 02:32:34,116 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:32:34" (1/1) ... [2021-10-11 02:32:34,123 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:32:34,137 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:32:34,298 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e48539a6-3766-4828-88d0-4620671806d7/sv-benchmarks/c/nla-digbench-scaling/geo1-ll_valuebound1.c[546,559] [2021-10-11 02:32:34,317 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:32:34,338 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:32:34,349 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e48539a6-3766-4828-88d0-4620671806d7/sv-benchmarks/c/nla-digbench-scaling/geo1-ll_valuebound1.c[546,559] [2021-10-11 02:32:34,355 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:32:34,370 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:32:34,371 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:34 WrapperNode [2021-10-11 02:32:34,371 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:32:34,373 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:32:34,373 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:32:34,373 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:32:34,383 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:34" (1/1) ... [2021-10-11 02:32:34,392 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:34" (1/1) ... [2021-10-11 02:32:34,423 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:32:34,425 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:32:34,425 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:32:34,426 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:32:34,435 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:34" (1/1) ... [2021-10-11 02:32:34,435 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:34" (1/1) ... [2021-10-11 02:32:34,450 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:34" (1/1) ... [2021-10-11 02:32:34,451 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:34" (1/1) ... [2021-10-11 02:32:34,455 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:34" (1/1) ... [2021-10-11 02:32:34,461 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:34" (1/1) ... [2021-10-11 02:32:34,471 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:34" (1/1) ... [2021-10-11 02:32:34,476 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:32:34,484 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:32:34,484 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:32:34,485 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:32:34,486 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:34" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e48539a6-3766-4828-88d0-4620671806d7/bin/utaipan-WLngWcDbfI/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 [2021-10-11 02:32:34,596 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 02:32:34,597 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:32:34,597 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:32:34,597 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:32:35,188 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:32:35,189 INFO L299 CfgBuilder]: Removed 17 assume(true) statements. [2021-10-11 02:32:35,191 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:32:35 BoogieIcfgContainer [2021-10-11 02:32:35,192 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:32:35,194 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:32:35,194 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:32:35,198 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:32:35,199 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:32:34" (1/3) ... [2021-10-11 02:32:35,200 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7be03227 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:32:35, skipping insertion in model container [2021-10-11 02:32:35,200 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:34" (2/3) ... [2021-10-11 02:32:35,201 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7be03227 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:32:35, skipping insertion in model container [2021-10-11 02:32:35,201 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:32:35" (3/3) ... [2021-10-11 02:32:35,203 INFO L111 eAbstractionObserver]: Analyzing ICFG geo1-ll_valuebound1.c [2021-10-11 02:32:35,219 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:32:35,223 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2021-10-11 02:32:35,236 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-10-11 02:32:35,265 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:32:35,265 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 02:32:35,265 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:32:35,266 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:32:35,266 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:32:35,266 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:32:35,266 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:32:35,267 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:32:35,282 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states. [2021-10-11 02:32:35,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-11 02:32:35,288 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:32:35,288 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-11 02:32:35,289 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:32:35,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:32:35,296 INFO L82 PathProgramCache]: Analyzing trace with hash 3583954, now seen corresponding path program 1 times [2021-10-11 02:32:35,307 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:32:35,308 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935654504] [2021-10-11 02:32:35,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:32:35,426 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-11 02:32:35,427 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [394851687] [2021-10-11 02:32:35,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e48539a6-3766-4828-88d0-4620671806d7/bin/utaipan-WLngWcDbfI/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 [2021-10-11 02:32:35,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:32:35,516 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-11 02:32:35,520 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:32:35,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:32:35,675 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:32:35,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:32:35,729 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935654504] [2021-10-11 02:32:35,729 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-11 02:32:35,730 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [394851687] [2021-10-11 02:32:35,731 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:32:35,731 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-10-11 02:32:35,732 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238946954] [2021-10-11 02:32:35,738 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-10-11 02:32:35,739 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:32:35,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-11 02:32:35,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-11 02:32:35,764 INFO L87 Difference]: Start difference. First operand 12 states. Second operand 6 states. [2021-10-11 02:32:37,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:32:37,927 INFO L93 Difference]: Finished difference Result 38 states and 51 transitions. [2021-10-11 02:32:37,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-11 02:32:37,930 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 4 [2021-10-11 02:32:37,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:32:37,939 INFO L225 Difference]: With dead ends: 38 [2021-10-11 02:32:37,940 INFO L226 Difference]: Without dead ends: 17 [2021-10-11 02:32:37,943 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-10-11 02:32:37,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-10-11 02:32:37,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 16. [2021-10-11 02:32:37,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-10-11 02:32:37,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2021-10-11 02:32:37,982 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 4 [2021-10-11 02:32:37,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:32:37,982 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2021-10-11 02:32:37,983 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-10-11 02:32:37,983 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2021-10-11 02:32:37,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-11 02:32:37,984 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:32:37,984 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1] [2021-10-11 02:32:38,207 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-10-11 02:32:38,208 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:32:38,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:32:38,209 INFO L82 PathProgramCache]: Analyzing trace with hash -1531662382, now seen corresponding path program 1 times [2021-10-11 02:32:38,209 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:32:38,209 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225788389] [2021-10-11 02:32:38,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:32:38,228 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-11 02:32:38,230 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2090611851] [2021-10-11 02:32:38,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e48539a6-3766-4828-88d0-4620671806d7/bin/utaipan-WLngWcDbfI/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 [2021-10-11 02:32:38,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:32:38,289 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-11 02:32:38,290 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:32:38,325 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-11 02:32:38,326 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:32:38,343 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-11 02:32:38,344 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225788389] [2021-10-11 02:32:38,344 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-11 02:32:38,344 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2090611851] [2021-10-11 02:32:38,345 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:32:38,345 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-10-11 02:32:38,345 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194737656] [2021-10-11 02:32:38,347 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:32:38,360 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:32:38,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:32:38,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:32:38,362 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 4 states. [2021-10-11 02:32:38,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:32:38,364 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2021-10-11 02:32:38,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:32:38,365 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2021-10-11 02:32:38,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:32:38,365 INFO L225 Difference]: With dead ends: 16 [2021-10-11 02:32:38,365 INFO L226 Difference]: Without dead ends: 0 [2021-10-11 02:32:38,366 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:32:38,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-11 02:32:38,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-11 02:32:38,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-10-11 02:32:38,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-11 02:32:38,370 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2021-10-11 02:32:38,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:32:38,371 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-11 02:32:38,371 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:32:38,372 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-11 02:32:38,372 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-11 02:32:38,593 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:32:38,594 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-11 02:32:38,658 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 18) no Hoare annotation was computed. [2021-10-11 02:32:38,658 INFO L258 CegarLoopResult]: At program point L36-2(lines 36 46) the Hoare annotation is: (and (= ULTIMATE.start_main_~x~0 1) (= ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~y~0) (<= 1 ULTIMATE.start_main_~c~0) (<= 0 ULTIMATE.start_main_~k~0) (<= ULTIMATE.start_main_~z~0 1) (<= 1 ULTIMATE.start_main_~z~0) (<= ULTIMATE.start_main_~k~0 1)) [2021-10-11 02:32:38,658 INFO L262 CegarLoopResult]: For program point L36-3(lines 36 46) no Hoare annotation was computed. [2021-10-11 02:32:38,659 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-11 02:32:38,659 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 18) no Hoare annotation was computed. [2021-10-11 02:32:38,659 INFO L262 CegarLoopResult]: For program point L16(lines 16 19) no Hoare annotation was computed. [2021-10-11 02:32:38,659 INFO L258 CegarLoopResult]: At program point L16-2(lines 39 40) the Hoare annotation is: (and (= ULTIMATE.start_main_~x~0 1) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~y~0) (<= 1 ULTIMATE.start_main_~c~0) (<= 0 ULTIMATE.start_main_~k~0) (<= ULTIMATE.start_main_~z~0 1) (<= 1 ULTIMATE.start_main_~z~0) (<= ULTIMATE.start_main_~k~0 1)) [2021-10-11 02:32:38,660 INFO L262 CegarLoopResult]: For program point L16-3(lines 16 19) no Hoare annotation was computed. [2021-10-11 02:32:38,660 INFO L258 CegarLoopResult]: At program point L16-5(lines 15 21) the Hoare annotation is: (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) [2021-10-11 02:32:38,660 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-11 02:32:38,660 INFO L262 CegarLoopResult]: For program point L17(lines 17 18) no Hoare annotation was computed. [2021-10-11 02:32:38,660 INFO L262 CegarLoopResult]: For program point L17-1(lines 17 18) no Hoare annotation was computed. [2021-10-11 02:32:38,676 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:32:38 BoogieIcfgContainer [2021-10-11 02:32:38,676 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:32:38,677 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:32:38,677 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:32:38,677 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:32:38,678 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:32:35" (3/4) ... [2021-10-11 02:32:38,681 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-11 02:32:38,691 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2021-10-11 02:32:38,691 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2021-10-11 02:32:38,692 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2021-10-11 02:32:38,692 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-11 02:32:38,735 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e48539a6-3766-4828-88d0-4620671806d7/bin/utaipan-WLngWcDbfI/witness.graphml [2021-10-11 02:32:38,735 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:32:38,737 INFO L168 Benchmark]: Toolchain (without parser) took 4629.32 ms. Allocated memory was 96.5 MB in the beginning and 130.0 MB in the end (delta: 33.6 MB). Free memory was 63.3 MB in the beginning and 94.2 MB in the end (delta: -30.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:32:38,738 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 96.5 MB. Free memory was 53.9 MB in the beginning and 53.9 MB in the end (delta: 43.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:32:38,739 INFO L168 Benchmark]: CACSL2BoogieTranslator took 262.98 ms. Allocated memory was 96.5 MB in the beginning and 130.0 MB in the end (delta: 33.6 MB). Free memory was 63.2 MB in the beginning and 105.7 MB in the end (delta: -42.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-11 02:32:38,739 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.61 ms. Allocated memory is still 130.0 MB. Free memory was 105.7 MB in the beginning and 104.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:32:38,740 INFO L168 Benchmark]: Boogie Preprocessor took 58.26 ms. Allocated memory is still 130.0 MB. Free memory was 104.4 MB in the beginning and 103.2 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:32:38,741 INFO L168 Benchmark]: RCFGBuilder took 707.88 ms. Allocated memory is still 130.0 MB. Free memory was 103.2 MB in the beginning and 79.8 MB in the end (delta: 23.5 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:32:38,741 INFO L168 Benchmark]: TraceAbstraction took 3482.81 ms. Allocated memory is still 130.0 MB. Free memory was 79.2 MB in the beginning and 97.0 MB in the end (delta: -17.8 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:32:38,742 INFO L168 Benchmark]: Witness Printer took 58.59 ms. Allocated memory is still 130.0 MB. Free memory was 97.0 MB in the beginning and 94.2 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:32:38,745 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 96.5 MB. Free memory was 53.9 MB in the beginning and 53.9 MB in the end (delta: 43.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 262.98 ms. Allocated memory was 96.5 MB in the beginning and 130.0 MB in the end (delta: 33.6 MB). Free memory was 63.2 MB in the beginning and 105.7 MB in the end (delta: -42.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 50.61 ms. Allocated memory is still 130.0 MB. Free memory was 105.7 MB in the beginning and 104.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 58.26 ms. Allocated memory is still 130.0 MB. Free memory was 104.4 MB in the beginning and 103.2 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 707.88 ms. Allocated memory is still 130.0 MB. Free memory was 103.2 MB in the beginning and 79.8 MB in the end (delta: 23.5 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3482.81 ms. Allocated memory is still 130.0 MB. Free memory was 79.2 MB in the beginning and 97.0 MB in the end (delta: -17.8 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 58.59 ms. Allocated memory is still 130.0 MB. Free memory was 97.0 MB in the beginning and 94.2 MB in the end (delta: 2.8 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: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - InvariantResult [Line: 15]: Loop Invariant Derived loop invariant: !(0 == cond) - InvariantResult [Line: 36]: Loop Invariant Derived loop invariant: (((((x == 1 && z == y) && 1 <= c) && 0 <= k) && z <= 1) && 1 <= z) && k <= 1 - InvariantResult [Line: 39]: Loop Invariant Derived loop invariant: ((((((x == 1 && 1 == cond) && z == y) && 1 <= c) && 0 <= k) && z <= 1) && 1 <= z) && k <= 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 12 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.3s, OverallIterations: 2, TraceHistogramMax: 3, AutomataDifference: 2.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 10 SDtfs, 26 SDslu, 19 SDs, 0 SdLazy, 21 SolverSat, 16 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 2.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 26 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=16occurred in iteration=1, 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, 2 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 8 NumberOfFragments, 51 HoareAnnotationTreeSize, 3 FomulaSimplifications, 13 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 4 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 14 NumberOfCodeBlocks, 14 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 24 ConstructedInterpolants, 0 QuantifiedInterpolants, 552 SizeOfPredicates, 8 NumberOfNonLiveVariables, 136 ConjunctsInSsa, 20 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 14/14 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...