./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/fermat2-ll_valuebound1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6182eec-e08d-4651-9994-db91e1edad73/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6182eec-e08d-4651-9994-db91e1edad73/bin/utaipan-eEHZpOm5b7/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6182eec-e08d-4651-9994-db91e1edad73/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6182eec-e08d-4651-9994-db91e1edad73/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/fermat2-ll_valuebound1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6182eec-e08d-4651-9994-db91e1edad73/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6182eec-e08d-4651-9994-db91e1edad73/bin/utaipan-eEHZpOm5b7 --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 3d5962362825282ae42e15c2becb997ecc48fe70f2dab3f327a660cebbeb623f --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 19:41:54,533 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 19:41:54,536 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 19:41:54,576 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 19:41:54,577 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 19:41:54,578 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 19:41:54,580 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 19:41:54,582 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 19:41:54,584 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 19:41:54,585 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 19:41:54,586 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 19:41:54,588 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 19:41:54,588 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 19:41:54,590 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 19:41:54,591 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 19:41:54,593 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 19:41:54,594 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 19:41:54,595 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 19:41:54,598 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 19:41:54,600 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 19:41:54,602 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 19:41:54,604 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 19:41:54,606 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 19:41:54,607 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 19:41:54,611 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 19:41:54,611 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 19:41:54,612 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 19:41:54,613 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 19:41:54,614 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 19:41:54,615 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 19:41:54,616 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 19:41:54,617 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 19:41:54,618 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 19:41:54,619 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 19:41:54,620 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 19:41:54,620 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 19:41:54,621 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 19:41:54,622 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 19:41:54,622 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 19:41:54,623 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 19:41:54,624 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 19:41:54,625 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6182eec-e08d-4651-9994-db91e1edad73/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-25 19:41:54,652 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 19:41:54,652 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 19:41:54,652 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 19:41:54,653 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 19:41:54,653 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 19:41:54,653 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 19:41:54,653 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 19:41:54,654 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 19:41:54,654 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 19:41:54,654 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 19:41:54,654 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 19:41:54,655 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 19:41:54,655 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 19:41:54,655 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 19:41:54,655 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 19:41:54,655 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 19:41:54,656 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 19:41:54,656 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 19:41:54,656 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 19:41:54,657 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-25 19:41:54,657 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 19:41:54,657 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-25 19:41:54,657 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 19:41:54,657 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 19:41:54,658 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 19:41:54,658 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 19:41:54,658 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-25 19:41:54,658 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 19:41:54,658 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 19:41:54,659 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 19:41:54,659 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 19:41:54,659 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 19:41:54,659 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 19:41:54,660 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 19:41:54,660 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 19:41:54,660 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 19:41:54,660 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 19:41:54,660 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 19:41:54,660 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 19:41:54,661 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 19:41:54,661 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 19:41:54,661 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_d6182eec-e08d-4651-9994-db91e1edad73/bin/utaipan-eEHZpOm5b7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6182eec-e08d-4651-9994-db91e1edad73/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3d5962362825282ae42e15c2becb997ecc48fe70f2dab3f327a660cebbeb623f [2021-11-25 19:41:54,971 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 19:41:54,995 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 19:41:54,998 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 19:41:54,999 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 19:41:55,000 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 19:41:55,001 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6182eec-e08d-4651-9994-db91e1edad73/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/nla-digbench-scaling/fermat2-ll_valuebound1.c [2021-11-25 19:41:55,097 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6182eec-e08d-4651-9994-db91e1edad73/bin/utaipan-eEHZpOm5b7/data/0c48cd0af/0d4314f8282b40b98ffc00a14848488e/FLAGbe0614d7c [2021-11-25 19:41:55,629 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 19:41:55,632 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6182eec-e08d-4651-9994-db91e1edad73/sv-benchmarks/c/nla-digbench-scaling/fermat2-ll_valuebound1.c [2021-11-25 19:41:55,643 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6182eec-e08d-4651-9994-db91e1edad73/bin/utaipan-eEHZpOm5b7/data/0c48cd0af/0d4314f8282b40b98ffc00a14848488e/FLAGbe0614d7c [2021-11-25 19:41:55,999 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6182eec-e08d-4651-9994-db91e1edad73/bin/utaipan-eEHZpOm5b7/data/0c48cd0af/0d4314f8282b40b98ffc00a14848488e [2021-11-25 19:41:56,001 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 19:41:56,003 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 19:41:56,005 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 19:41:56,005 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 19:41:56,015 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 19:41:56,016 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 07:41:56" (1/1) ... [2021-11-25 19:41:56,017 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1706c539 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:41:56, skipping insertion in model container [2021-11-25 19:41:56,018 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 07:41:56" (1/1) ... [2021-11-25 19:41:56,028 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 19:41:56,046 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 19:41:56,246 WARN L230 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_d6182eec-e08d-4651-9994-db91e1edad73/sv-benchmarks/c/nla-digbench-scaling/fermat2-ll_valuebound1.c[524,537] [2021-11-25 19:41:56,262 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 19:41:56,270 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 19:41:56,284 WARN L230 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_d6182eec-e08d-4651-9994-db91e1edad73/sv-benchmarks/c/nla-digbench-scaling/fermat2-ll_valuebound1.c[524,537] [2021-11-25 19:41:56,292 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 19:41:56,306 INFO L208 MainTranslator]: Completed translation [2021-11-25 19:41:56,306 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:41:56 WrapperNode [2021-11-25 19:41:56,306 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 19:41:56,308 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 19:41:56,308 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 19:41:56,308 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 19:41:56,316 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:41:56" (1/1) ... [2021-11-25 19:41:56,323 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:41:56" (1/1) ... [2021-11-25 19:41:56,348 INFO L137 Inliner]: procedures = 14, calls = 13, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 43 [2021-11-25 19:41:56,349 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 19:41:56,350 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 19:41:56,350 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 19:41:56,351 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 19:41:56,359 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:41:56" (1/1) ... [2021-11-25 19:41:56,359 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:41:56" (1/1) ... [2021-11-25 19:41:56,370 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:41:56" (1/1) ... [2021-11-25 19:41:56,370 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:41:56" (1/1) ... [2021-11-25 19:41:56,373 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:41:56" (1/1) ... [2021-11-25 19:41:56,377 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:41:56" (1/1) ... [2021-11-25 19:41:56,378 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:41:56" (1/1) ... [2021-11-25 19:41:56,379 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 19:41:56,380 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 19:41:56,381 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 19:41:56,381 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 19:41:56,387 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:41:56" (1/1) ... [2021-11-25 19:41:56,394 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 19:41:56,406 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6182eec-e08d-4651-9994-db91e1edad73/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:41:56,423 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6182eec-e08d-4651-9994-db91e1edad73/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 19:41:56,440 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6182eec-e08d-4651-9994-db91e1edad73/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 19:41:56,470 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 19:41:56,470 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-25 19:41:56,470 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-25 19:41:56,471 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 19:41:56,471 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 19:41:56,471 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 19:41:56,471 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-25 19:41:56,472 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-25 19:41:56,536 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 19:41:56,538 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 19:41:56,705 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 19:41:56,751 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 19:41:56,765 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-25 19:41:56,768 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:41:56 BoogieIcfgContainer [2021-11-25 19:41:56,768 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 19:41:56,770 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 19:41:56,771 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 19:41:56,774 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 19:41:56,774 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 07:41:56" (1/3) ... [2021-11-25 19:41:56,775 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@276278af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 07:41:56, skipping insertion in model container [2021-11-25 19:41:56,776 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:41:56" (2/3) ... [2021-11-25 19:41:56,776 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@276278af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 07:41:56, skipping insertion in model container [2021-11-25 19:41:56,776 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:41:56" (3/3) ... [2021-11-25 19:41:56,778 INFO L111 eAbstractionObserver]: Analyzing ICFG fermat2-ll_valuebound1.c [2021-11-25 19:41:56,783 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 19:41:56,797 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-25 19:41:56,845 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 19:41:56,852 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-25 19:41:56,852 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-25 19:41:56,869 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 12 states have internal predecessors, (15), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2021-11-25 19:41:56,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-25 19:41:56,876 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:41:56,877 INFO L514 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:41:56,877 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:41:56,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:41:56,883 INFO L85 PathProgramCache]: Analyzing trace with hash 733771015, now seen corresponding path program 1 times [2021-11-25 19:41:56,893 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:41:56,894 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372458017] [2021-11-25 19:41:56,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:41:56,895 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:41:56,992 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-25 19:41:56,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1037142024] [2021-11-25 19:41:56,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:41:56,993 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:41:56,994 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6182eec-e08d-4651-9994-db91e1edad73/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:41:56,995 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6182eec-e08d-4651-9994-db91e1edad73/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:41:57,016 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6182eec-e08d-4651-9994-db91e1edad73/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-25 19:41:57,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:41:57,069 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 26 conjunts are in the unsatisfiable core [2021-11-25 19:41:57,075 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:41:57,530 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-25 19:41:57,531 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:41:57,789 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-25 19:41:57,790 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:41:57,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372458017] [2021-11-25 19:41:57,791 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-25 19:41:57,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1037142024] [2021-11-25 19:41:57,792 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1037142024] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-25 19:41:57,792 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 19:41:57,792 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 10 [2021-11-25 19:41:57,795 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321843660] [2021-11-25 19:41:57,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:41:57,800 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 19:41:57,813 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:41:57,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 19:41:57,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-11-25 19:41:57,862 INFO L87 Difference]: Start difference. First operand has 21 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 12 states have internal predecessors, (15), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-25 19:41:58,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:41:58,158 INFO L93 Difference]: Finished difference Result 37 states and 48 transitions. [2021-11-25 19:41:58,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 19:41:58,162 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 20 [2021-11-25 19:41:58,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:41:58,175 INFO L225 Difference]: With dead ends: 37 [2021-11-25 19:41:58,176 INFO L226 Difference]: Without dead ends: 21 [2021-11-25 19:41:58,179 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2021-11-25 19:41:58,186 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 7 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 19:41:58,191 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 63 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-25 19:41:58,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2021-11-25 19:41:58,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2021-11-25 19:41:58,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 12 states have (on average 1.0833333333333333) internal successors, (13), 12 states have internal predecessors, (13), 6 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-11-25 19:41:58,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 24 transitions. [2021-11-25 19:41:58,234 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 24 transitions. Word has length 20 [2021-11-25 19:41:58,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:41:58,237 INFO L470 AbstractCegarLoop]: Abstraction has 21 states and 24 transitions. [2021-11-25 19:41:58,237 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-25 19:41:58,238 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 24 transitions. [2021-11-25 19:41:58,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-25 19:41:58,241 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:41:58,242 INFO L514 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:41:58,282 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6182eec-e08d-4651-9994-db91e1edad73/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-25 19:41:58,468 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6182eec-e08d-4651-9994-db91e1edad73/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-11-25 19:41:58,468 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:41:58,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:41:58,469 INFO L85 PathProgramCache]: Analyzing trace with hash -1679275353, now seen corresponding path program 1 times [2021-11-25 19:41:58,470 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:41:58,470 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110570282] [2021-11-25 19:41:58,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:41:58,470 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:41:58,500 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-25 19:41:58,501 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1872052487] [2021-11-25 19:41:58,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:41:58,503 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:41:58,503 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6182eec-e08d-4651-9994-db91e1edad73/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:41:58,504 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6182eec-e08d-4651-9994-db91e1edad73/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:41:58,529 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6182eec-e08d-4651-9994-db91e1edad73/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-25 19:41:58,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:41:58,578 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-25 19:41:58,580 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:41:58,752 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-25 19:41:58,756 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:41:59,013 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-25 19:41:59,014 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:41:59,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110570282] [2021-11-25 19:41:59,015 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-25 19:41:59,015 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1872052487] [2021-11-25 19:41:59,017 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1872052487] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:41:59,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1721213418] [2021-11-25 19:41:59,046 INFO L159 IcfgInterpreter]: Started Sifa with 19 locations of interest [2021-11-25 19:41:59,046 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 19:41:59,051 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 19:41:59,056 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 19:41:59,057 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 19:41:59,951 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 160 for LOIs [2021-11-25 19:42:00,237 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 58 for LOIs [2021-11-25 19:42:00,261 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 19:42:01,873 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [1721213418] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:42:01,873 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-11-25 19:42:01,874 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [8, 8] total 20 [2021-11-25 19:42:01,874 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151798542] [2021-11-25 19:42:01,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:42:01,875 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-25 19:42:01,876 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:42:01,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-25 19:42:01,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=301, Unknown=0, NotChecked=0, Total=380 [2021-11-25 19:42:01,877 INFO L87 Difference]: Start difference. First operand 21 states and 24 transitions. Second operand has 12 states, 8 states have (on average 1.375) internal successors, (11), 6 states have internal predecessors, (11), 5 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2021-11-25 19:42:01,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:42:01,982 INFO L93 Difference]: Finished difference Result 31 states and 35 transitions. [2021-11-25 19:42:01,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-25 19:42:01,983 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 8 states have (on average 1.375) internal successors, (11), 6 states have internal predecessors, (11), 5 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) Word has length 26 [2021-11-25 19:42:01,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:42:01,984 INFO L225 Difference]: With dead ends: 31 [2021-11-25 19:42:01,984 INFO L226 Difference]: Without dead ends: 0 [2021-11-25 19:42:01,985 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 52 SyntacticMatches, 6 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=79, Invalid=301, Unknown=0, NotChecked=0, Total=380 [2021-11-25 19:42:01,986 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 14 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 17 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 19:42:01,987 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 18 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 43 Invalid, 0 Unknown, 17 Unchecked, 0.1s Time] [2021-11-25 19:42:01,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-25 19:42:01,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-25 19:42:01,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 19:42:01,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-25 19:42:01,989 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 26 [2021-11-25 19:42:01,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:42:01,990 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-25 19:42:01,990 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 8 states have (on average 1.375) internal successors, (11), 6 states have internal predecessors, (11), 5 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2021-11-25 19:42:01,990 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-25 19:42:01,990 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-25 19:42:01,993 INFO L764 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-25 19:42:02,031 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6182eec-e08d-4651-9994-db91e1edad73/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-25 19:42:02,213 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6182eec-e08d-4651-9994-db91e1edad73/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-11-25 19:42:02,215 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-25 19:42:02,738 INFO L854 garLoopResultBuilder]: At program point L35-2(lines 35 46) the Hoare annotation is: (let ((.cse1 (select |#memory_int| 1)) (.cse0 (* 2 |ULTIMATE.start_main_~R~0#1|))) (and (not (= (ite (< (+ (* |ULTIMATE.start_main_~R~0#1| |ULTIMATE.start_main_~R~0#1|) 1) (+ .cse0 |ULTIMATE.start_main_~A~0#1|)) 1 0) 0)) (= (select |#length| 3) 12) (= 13 (select |#length| 2)) (not (= (ite (and (<= |ULTIMATE.start_main_~A~0#1| 1) (<= 0 |ULTIMATE.start_main_~A~0#1|)) 1 0) 0)) (= |ULTIMATE.start_main_~v~0#1| 1) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (= (select |#valid| 1) 1) (= (select |#valid| 0) 0) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (= (select .cse1 0) 48) (= (select .cse1 1) 0) (= (+ .cse0 1) |ULTIMATE.start_main_~u~0#1|) (= (+ (* 4 |ULTIMATE.start_main_~A~0#1|) (* |ULTIMATE.start_main_~v~0#1| |ULTIMATE.start_main_~v~0#1|) (* 4 |ULTIMATE.start_main_~r~0#1|) (* 2 |ULTIMATE.start_main_~u~0#1|)) (+ (* 2 |ULTIMATE.start_main_~v~0#1|) (* |ULTIMATE.start_main_~u~0#1| |ULTIMATE.start_main_~u~0#1|))) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))) [2021-11-25 19:42:02,739 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-25 19:42:02,739 INFO L858 garLoopResultBuilder]: For program point L29(line 29) no Hoare annotation was computed. [2021-11-25 19:42:02,739 INFO L854 garLoopResultBuilder]: At program point L27(line 27) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1))) (and (not (= (ite (< (+ (* |ULTIMATE.start_main_~R~0#1| |ULTIMATE.start_main_~R~0#1|) 1) (+ (* 2 |ULTIMATE.start_main_~R~0#1|) |ULTIMATE.start_main_~A~0#1|)) 1 0) 0)) (= (select |#length| 3) 12) (= 13 (select |#length| 2)) (not (= (ite (and (<= |ULTIMATE.start_main_~A~0#1| 1) (<= 0 |ULTIMATE.start_main_~A~0#1|)) 1 0) 0)) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (= (select |#valid| 1) 1) (= (select |#valid| 0) 0) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (= (select .cse0 0) 48) (= (select .cse0 1) 0) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))) [2021-11-25 19:42:02,739 INFO L854 garLoopResultBuilder]: At program point L25(line 25) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1))) (and (= (select |#length| 3) 12) (<= 0 (+ |ULTIMATE.start_main_~R~0#1| 2147483648)) (<= |ULTIMATE.start_main_~R~0#1| 2147483647) (= 13 (select |#length| 2)) (not (= (ite (and (<= |ULTIMATE.start_main_~A~0#1| 1) (<= 0 |ULTIMATE.start_main_~A~0#1|)) 1 0) 0)) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (= (select |#valid| 1) 1) (= (select |#valid| 0) 0) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (= (select .cse0 0) 48) (= (select .cse0 1) 0) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))) [2021-11-25 19:42:02,740 INFO L854 garLoopResultBuilder]: At program point L25-1(line 25) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1))) (and (= (select |#length| 3) 12) (= 13 (select |#length| 2)) (not (= (ite (and (<= |ULTIMATE.start_main_~A~0#1| 1) (<= 0 |ULTIMATE.start_main_~A~0#1|)) 1 0) 0)) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (= (select |#valid| 1) 1) (not (= (ite (and (<= 0 |ULTIMATE.start_main_~R~0#1|) (<= |ULTIMATE.start_main_~R~0#1| 1)) 1 0) 0)) (= (select |#valid| 0) 0) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (= (select .cse0 0) 48) (= (select .cse0 1) 0) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))) [2021-11-25 19:42:02,740 INFO L854 garLoopResultBuilder]: At program point L23(line 23) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1))) (and (<= 0 (+ |ULTIMATE.start_main_~A~0#1| 2147483648)) (= (select |#length| 3) 12) (= 13 (select |#length| 2)) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (= (select |#valid| 1) 1) (<= |ULTIMATE.start_main_~A~0#1| 2147483647) (= (select |#valid| 0) 0) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (= (select .cse0 0) 48) (= (select .cse0 1) 0) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))) [2021-11-25 19:42:02,740 INFO L858 garLoopResultBuilder]: For program point L23-1(line 23) no Hoare annotation was computed. [2021-11-25 19:42:02,741 INFO L854 garLoopResultBuilder]: At program point L36(line 36) the Hoare annotation is: (let ((.cse1 (select |#memory_int| 1)) (.cse0 (* 2 |ULTIMATE.start_main_~R~0#1|))) (and (not (= (ite (< (+ (* |ULTIMATE.start_main_~R~0#1| |ULTIMATE.start_main_~R~0#1|) 1) (+ .cse0 |ULTIMATE.start_main_~A~0#1|)) 1 0) 0)) (= (select |#length| 3) 12) (= 13 (select |#length| 2)) (not (= (ite (and (<= |ULTIMATE.start_main_~A~0#1| 1) (<= 0 |ULTIMATE.start_main_~A~0#1|)) 1 0) 0)) (= |ULTIMATE.start_main_~v~0#1| 1) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (= (select |#valid| 1) 1) (= (select |#valid| 0) 0) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (= (select .cse1 0) 48) (= (select .cse1 1) 0) (= (+ .cse0 1) |ULTIMATE.start_main_~u~0#1|) (= (+ (* 4 |ULTIMATE.start_main_~A~0#1|) (* |ULTIMATE.start_main_~v~0#1| |ULTIMATE.start_main_~v~0#1|) (* 4 |ULTIMATE.start_main_~r~0#1|) (* 2 |ULTIMATE.start_main_~u~0#1|)) (+ (* 2 |ULTIMATE.start_main_~v~0#1|) (* |ULTIMATE.start_main_~u~0#1| |ULTIMATE.start_main_~u~0#1|))) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))) [2021-11-25 19:42:02,741 INFO L858 garLoopResultBuilder]: For program point L36-1(lines 35 46) no Hoare annotation was computed. [2021-11-25 19:42:02,741 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-11-25 19:42:02,741 INFO L854 garLoopResultBuilder]: At program point L49(line 49) the Hoare annotation is: (= (+ (* 4 |ULTIMATE.start_main_~A~0#1|) (* |ULTIMATE.start_main_~v~0#1| |ULTIMATE.start_main_~v~0#1|) (* 4 |ULTIMATE.start_main_~r~0#1|) (* 2 |ULTIMATE.start_main_~u~0#1|)) (+ (* 2 |ULTIMATE.start_main_~v~0#1|) (* |ULTIMATE.start_main_~u~0#1| |ULTIMATE.start_main_~u~0#1|))) [2021-11-25 19:42:02,742 INFO L854 garLoopResultBuilder]: At program point L39-2(lines 35 46) the Hoare annotation is: (let ((.cse1 (select |#memory_int| 1)) (.cse0 (* 2 |ULTIMATE.start_main_~R~0#1|))) (and (not (= (ite (< (+ (* |ULTIMATE.start_main_~R~0#1| |ULTIMATE.start_main_~R~0#1|) 1) (+ .cse0 |ULTIMATE.start_main_~A~0#1|)) 1 0) 0)) (= (select |#length| 3) 12) (= 13 (select |#length| 2)) (not (= (ite (and (<= |ULTIMATE.start_main_~A~0#1| 1) (<= 0 |ULTIMATE.start_main_~A~0#1|)) 1 0) 0)) (= |ULTIMATE.start_main_~v~0#1| 1) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (= (select |#valid| 1) 1) (= (select |#valid| 0) 0) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (= (select .cse1 0) 48) (= (select .cse1 1) 0) (= (+ .cse0 1) |ULTIMATE.start_main_~u~0#1|) (= (+ (* 4 |ULTIMATE.start_main_~A~0#1|) (* |ULTIMATE.start_main_~v~0#1| |ULTIMATE.start_main_~v~0#1|) (* 4 |ULTIMATE.start_main_~r~0#1|) (* 2 |ULTIMATE.start_main_~u~0#1|)) (+ (* 2 |ULTIMATE.start_main_~v~0#1|) (* |ULTIMATE.start_main_~u~0#1| |ULTIMATE.start_main_~u~0#1|))) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))) [2021-11-25 19:42:02,742 INFO L861 garLoopResultBuilder]: At program point assume_abort_if_notENTRY(lines 8 10) the Hoare annotation is: true [2021-11-25 19:42:02,742 INFO L858 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 8 10) no Hoare annotation was computed. [2021-11-25 19:42:02,742 INFO L861 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 11 17) the Hoare annotation is: true [2021-11-25 19:42:02,742 INFO L858 garLoopResultBuilder]: For program point L13(lines 13 14) no Hoare annotation was computed. [2021-11-25 19:42:02,742 INFO L858 garLoopResultBuilder]: For program point L12(lines 12 15) no Hoare annotation was computed. [2021-11-25 19:42:02,742 INFO L858 garLoopResultBuilder]: For program point L12-2(lines 11 17) no Hoare annotation was computed. [2021-11-25 19:42:02,743 INFO L858 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 11 17) no Hoare annotation was computed. [2021-11-25 19:42:02,743 INFO L858 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2021-11-25 19:42:02,746 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-11-25 19:42:02,747 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-25 19:42:02,766 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 07:42:02 BoogieIcfgContainer [2021-11-25 19:42:02,766 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-25 19:42:02,767 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-25 19:42:02,767 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-25 19:42:02,767 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-25 19:42:02,767 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:41:56" (3/4) ... [2021-11-25 19:42:02,770 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-25 19:42:02,775 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2021-11-25 19:42:02,776 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2021-11-25 19:42:02,779 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2021-11-25 19:42:02,780 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2021-11-25 19:42:02,780 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2021-11-25 19:42:02,780 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-25 19:42:02,813 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6182eec-e08d-4651-9994-db91e1edad73/bin/utaipan-eEHZpOm5b7/witness.graphml [2021-11-25 19:42:02,814 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-25 19:42:02,814 INFO L158 Benchmark]: Toolchain (without parser) took 6811.47ms. Allocated memory was 94.4MB in the beginning and 157.3MB in the end (delta: 62.9MB). Free memory was 59.5MB in the beginning and 51.5MB in the end (delta: 8.0MB). Peak memory consumption was 69.9MB. Max. memory is 16.1GB. [2021-11-25 19:42:02,815 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 94.4MB. Free memory was 66.9MB in the beginning and 66.9MB in the end (delta: 25.4kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-25 19:42:02,815 INFO L158 Benchmark]: CACSL2BoogieTranslator took 302.28ms. Allocated memory was 94.4MB in the beginning and 130.0MB in the end (delta: 35.7MB). Free memory was 59.3MB in the beginning and 104.5MB in the end (delta: -45.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-25 19:42:02,816 INFO L158 Benchmark]: Boogie Procedure Inliner took 41.97ms. Allocated memory is still 130.0MB. Free memory was 104.5MB in the beginning and 102.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-25 19:42:02,816 INFO L158 Benchmark]: Boogie Preprocessor took 29.39ms. Allocated memory is still 130.0MB. Free memory was 102.4MB in the beginning and 101.7MB in the end (delta: 692.1kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-25 19:42:02,816 INFO L158 Benchmark]: RCFGBuilder took 388.23ms. Allocated memory is still 130.0MB. Free memory was 101.7MB in the beginning and 90.5MB in the end (delta: 11.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-25 19:42:02,817 INFO L158 Benchmark]: TraceAbstraction took 5995.89ms. Allocated memory was 130.0MB in the beginning and 157.3MB in the end (delta: 27.3MB). Free memory was 90.5MB in the beginning and 54.6MB in the end (delta: 35.9MB). Peak memory consumption was 66.3MB. Max. memory is 16.1GB. [2021-11-25 19:42:02,817 INFO L158 Benchmark]: Witness Printer took 47.07ms. Allocated memory is still 157.3MB. Free memory was 54.6MB in the beginning and 51.5MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-25 19:42:02,819 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 94.4MB. Free memory was 66.9MB in the beginning and 66.9MB in the end (delta: 25.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 302.28ms. Allocated memory was 94.4MB in the beginning and 130.0MB in the end (delta: 35.7MB). Free memory was 59.3MB in the beginning and 104.5MB in the end (delta: -45.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 41.97ms. Allocated memory is still 130.0MB. Free memory was 104.5MB in the beginning and 102.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 29.39ms. Allocated memory is still 130.0MB. Free memory was 102.4MB in the beginning and 101.7MB in the end (delta: 692.1kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 388.23ms. Allocated memory is still 130.0MB. Free memory was 101.7MB in the beginning and 90.5MB in the end (delta: 11.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 5995.89ms. Allocated memory was 130.0MB in the beginning and 157.3MB in the end (delta: 27.3MB). Free memory was 90.5MB in the beginning and 54.6MB in the end (delta: 35.9MB). Peak memory consumption was 66.3MB. Max. memory is 16.1GB. * Witness Printer took 47.07ms. Allocated memory is still 157.3MB. Free memory was 54.6MB in the beginning and 51.5MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 21 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 5.9s, OverallIterations: 2, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.5s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 26 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 21 mSDsluCounter, 81 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 17 IncrementalHoareTripleChecker+Unchecked, 65 mSDsCounter, 16 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 72 IncrementalHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 16 mSolverCounterUnsat, 26 mSDtfsCounter, 72 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 115 GetRequests, 81 SyntacticMatches, 7 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 1.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred in iteration=0, InterpolantAutomatonStates: 17, 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, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 10 LocationsWithAnnotation, 18 PreInvPairs, 22 NumberOfFragments, 704 HoareAnnotationTreeSize, 18 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 10 FomulaSimplificationsInter, 676 FormulaSimplificationTreeSizeReductionInter, 0.5s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 46 NumberOfCodeBlocks, 46 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 88 ConstructedInterpolants, 0 QuantifiedInterpolants, 404 SizeOfPredicates, 12 NumberOfNonLiveVariables, 169 ConjunctsInSsa, 36 ConjunctsInUnsatCore, 4 InterpolantComputations, 1 PerfectInterpolantSequences, 47/52 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: OVERALL_TIME: 1.2s, ICFG_INTERPRETER_ENTERED_PROCEDURES: 3, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 21, DAG_INTERPRETER_EARLY_EXITS: 1, TOOLS_POST_APPLICATIONS: 14, TOOLS_POST_TIME: 0.3s, TOOLS_POST_CALL_APPLICATIONS: 16, TOOLS_POST_CALL_TIME: 0.5s, TOOLS_POST_RETURN_APPLICATIONS: 10, TOOLS_POST_RETURN_TIME: 0.1s, TOOLS_QUANTIFIERELIM_APPLICATIONS: 40, TOOLS_QUANTIFIERELIM_TIME: 0.9s, TOOLS_QUANTIFIERELIM_MAX_TIME: 0.1s, FLUID_QUERY_TIME: 0.0s, FLUID_QUERIES: 54, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 18, DOMAIN_JOIN_TIME: 0.2s, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME: 0.0s, DOMAIN_WIDEN_APPLICATIONS: 0, DOMAIN_WIDEN_TIME: 0.0s, DOMAIN_ISSUBSETEQ_APPLICATIONS: 0, DOMAIN_ISSUBSETEQ_TIME: 0.0s, DOMAIN_ISBOTTOM_APPLICATIONS: 21, DOMAIN_ISBOTTOM_TIME: 0.0s, LOOP_SUMMARIZER_APPLICATIONS: 0, LOOP_SUMMARIZER_CACHE_MISSES: 0, LOOP_SUMMARIZER_OVERALL_TIME: 0.0s, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME: 0.0s, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 0, CALL_SUMMARIZER_APPLICATIONS: 10, CALL_SUMMARIZER_CACHE_MISSES: 2, CALL_SUMMARIZER_OVERALL_TIME: 0.0s, CALL_SUMMARIZER_NEW_COMPUTATION_TIME: 0.0s, PROCEDURE_GRAPH_BUILDER_TIME: 0.0s, PATH_EXPR_TIME: 0.0s, REGEX_TO_DAG_TIME: 0.0s, DAG_COMPRESSION_TIME: 0.0s, DAG_COMPRESSION_PROCESSED_NODES: 218, DAG_COMPRESSION_RETAINED_NODES: 58, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 35]: Loop Invariant Derived loop invariant: (((((((((((((((!((if R * R + 1 < 2 * R + A then 1 else 0) == 0) && unknown-#length-unknown[3] == 12) && 13 == unknown-#length-unknown[2]) && !((if A <= 1 && 0 <= A then 1 else 0) == 0)) && v == 1) && 2 == unknown-#length-unknown[1]) && \valid[3] == 1) && \valid[1] == 1) && \valid[0] == 0) && \valid[2] == 1) && #NULL == 0) && unknown-#memory_int-unknown[1][0] == 48) && unknown-#memory_int-unknown[1][1] == 0) && 2 * R + 1 == u) && 4 * A + v * v + 4 * r + 2 * u == 2 * v + u * u) && 0 < unknown-#StackHeapBarrier-unknown) && #NULL == 0 - InvariantResult [Line: 49]: Loop Invariant Derived loop invariant: 4 * A + v * v + 4 * r + 2 * u == 2 * v + u * u RESULT: Ultimate proved your program to be correct! [2021-11-25 19:42:02,839 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d6182eec-e08d-4651-9994-db91e1edad73/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE