./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/ps4-ll_valuebound1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1660a4fa-a063-481a-846c-62a5f4ea0231/bin/utaipan-Xvt2sAort0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1660a4fa-a063-481a-846c-62a5f4ea0231/bin/utaipan-Xvt2sAort0/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1660a4fa-a063-481a-846c-62a5f4ea0231/bin/utaipan-Xvt2sAort0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1660a4fa-a063-481a-846c-62a5f4ea0231/bin/utaipan-Xvt2sAort0/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/ps4-ll_valuebound1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1660a4fa-a063-481a-846c-62a5f4ea0231/bin/utaipan-Xvt2sAort0/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1660a4fa-a063-481a-846c-62a5f4ea0231/bin/utaipan-Xvt2sAort0 --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 9c6f057d93c74db928b7d0b0915eda2af89e3a19cf93af1e21b1cfa684bd6cf4 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-e04fb08 [2022-11-16 16:23:34,440 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 16:23:34,442 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 16:23:34,469 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 16:23:34,469 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 16:23:34,471 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 16:23:34,472 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 16:23:34,476 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 16:23:34,480 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 16:23:34,491 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 16:23:34,492 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 16:23:34,493 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 16:23:34,494 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 16:23:34,495 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 16:23:34,496 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 16:23:34,497 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 16:23:34,498 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 16:23:34,498 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 16:23:34,500 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 16:23:34,502 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 16:23:34,511 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 16:23:34,513 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 16:23:34,518 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 16:23:34,519 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 16:23:34,530 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 16:23:34,534 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 16:23:34,535 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 16:23:34,536 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 16:23:34,538 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 16:23:34,539 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 16:23:34,540 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 16:23:34,541 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 16:23:34,542 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 16:23:34,543 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 16:23:34,545 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 16:23:34,546 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 16:23:34,547 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 16:23:34,547 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 16:23:34,547 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 16:23:34,549 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 16:23:34,550 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 16:23:34,551 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1660a4fa-a063-481a-846c-62a5f4ea0231/bin/utaipan-Xvt2sAort0/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-16 16:23:34,593 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 16:23:34,593 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 16:23:34,594 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 16:23:34,594 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 16:23:34,596 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 16:23:34,596 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 16:23:34,597 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-16 16:23:34,597 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-16 16:23:34,597 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-16 16:23:34,597 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-16 16:23:34,598 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-16 16:23:34,599 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-16 16:23:34,599 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-16 16:23:34,599 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-16 16:23:34,599 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-16 16:23:34,600 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-16 16:23:34,600 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-16 16:23:34,600 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-16 16:23:34,601 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 16:23:34,601 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 16:23:34,601 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 16:23:34,601 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 16:23:34,602 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 16:23:34,603 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 16:23:34,604 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 16:23:34,604 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 16:23:34,604 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 16:23:34,604 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 16:23:34,604 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 16:23:34,605 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 16:23:34,605 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 16:23:34,605 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 16:23:34,606 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 16:23:34,606 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 16:23:34,606 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-16 16:23:34,606 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 16:23:34,606 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 16:23:34,607 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-16 16:23:34,607 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 16:23:34,607 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 16:23:34,607 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-16 16:23:34,608 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_1660a4fa-a063-481a-846c-62a5f4ea0231/bin/utaipan-Xvt2sAort0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1660a4fa-a063-481a-846c-62a5f4ea0231/bin/utaipan-Xvt2sAort0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9c6f057d93c74db928b7d0b0915eda2af89e3a19cf93af1e21b1cfa684bd6cf4 [2022-11-16 16:23:34,930 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 16:23:34,956 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 16:23:34,959 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 16:23:34,960 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 16:23:34,961 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 16:23:34,963 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1660a4fa-a063-481a-846c-62a5f4ea0231/bin/utaipan-Xvt2sAort0/../../sv-benchmarks/c/nla-digbench-scaling/ps4-ll_valuebound1.c [2022-11-16 16:23:35,057 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1660a4fa-a063-481a-846c-62a5f4ea0231/bin/utaipan-Xvt2sAort0/data/d53cb39fa/184bbe4a043242118b2fbaf37db7fa77/FLAGd284cdc04 [2022-11-16 16:23:35,543 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 16:23:35,543 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1660a4fa-a063-481a-846c-62a5f4ea0231/sv-benchmarks/c/nla-digbench-scaling/ps4-ll_valuebound1.c [2022-11-16 16:23:35,551 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1660a4fa-a063-481a-846c-62a5f4ea0231/bin/utaipan-Xvt2sAort0/data/d53cb39fa/184bbe4a043242118b2fbaf37db7fa77/FLAGd284cdc04 [2022-11-16 16:23:35,915 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1660a4fa-a063-481a-846c-62a5f4ea0231/bin/utaipan-Xvt2sAort0/data/d53cb39fa/184bbe4a043242118b2fbaf37db7fa77 [2022-11-16 16:23:35,919 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 16:23:35,922 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 16:23:35,927 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 16:23:35,927 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 16:23:35,931 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 16:23:35,932 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 04:23:35" (1/1) ... [2022-11-16 16:23:35,934 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19fee0ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:23:35, skipping insertion in model container [2022-11-16 16:23:35,935 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 04:23:35" (1/1) ... [2022-11-16 16:23:35,942 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 16:23:35,957 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 16:23:36,147 WARN L229 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_1660a4fa-a063-481a-846c-62a5f4ea0231/sv-benchmarks/c/nla-digbench-scaling/ps4-ll_valuebound1.c[458,471] [2022-11-16 16:23:36,162 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 16:23:36,170 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 16:23:36,183 WARN L229 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_1660a4fa-a063-481a-846c-62a5f4ea0231/sv-benchmarks/c/nla-digbench-scaling/ps4-ll_valuebound1.c[458,471] [2022-11-16 16:23:36,189 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 16:23:36,202 INFO L208 MainTranslator]: Completed translation [2022-11-16 16:23:36,202 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:23:36 WrapperNode [2022-11-16 16:23:36,203 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 16:23:36,204 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 16:23:36,204 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 16:23:36,204 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 16:23:36,212 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:23:36" (1/1) ... [2022-11-16 16:23:36,218 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:23:36" (1/1) ... [2022-11-16 16:23:36,234 INFO L138 Inliner]: procedures = 14, calls = 11, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 38 [2022-11-16 16:23:36,234 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 16:23:36,235 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 16:23:36,235 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 16:23:36,236 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 16:23:36,244 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:23:36" (1/1) ... [2022-11-16 16:23:36,244 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:23:36" (1/1) ... [2022-11-16 16:23:36,245 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:23:36" (1/1) ... [2022-11-16 16:23:36,246 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:23:36" (1/1) ... [2022-11-16 16:23:36,248 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:23:36" (1/1) ... [2022-11-16 16:23:36,252 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:23:36" (1/1) ... [2022-11-16 16:23:36,253 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:23:36" (1/1) ... [2022-11-16 16:23:36,253 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:23:36" (1/1) ... [2022-11-16 16:23:36,255 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 16:23:36,256 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 16:23:36,256 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 16:23:36,256 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 16:23:36,265 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:23:36" (1/1) ... [2022-11-16 16:23:36,272 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 16:23:36,284 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1660a4fa-a063-481a-846c-62a5f4ea0231/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 16:23:36,304 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1660a4fa-a063-481a-846c-62a5f4ea0231/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 16:23:36,321 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1660a4fa-a063-481a-846c-62a5f4ea0231/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 16:23:36,350 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 16:23:36,350 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 16:23:36,350 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 16:23:36,351 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 16:23:36,351 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-16 16:23:36,351 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-16 16:23:36,418 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 16:23:36,420 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 16:23:36,553 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 16:23:36,580 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 16:23:36,581 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-16 16:23:36,583 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 04:23:36 BoogieIcfgContainer [2022-11-16 16:23:36,583 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 16:23:36,586 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 16:23:36,586 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 16:23:36,589 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 16:23:36,590 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 04:23:35" (1/3) ... [2022-11-16 16:23:36,590 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38c13f32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 04:23:36, skipping insertion in model container [2022-11-16 16:23:36,591 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:23:36" (2/3) ... [2022-11-16 16:23:36,591 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38c13f32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 04:23:36, skipping insertion in model container [2022-11-16 16:23:36,591 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 04:23:36" (3/3) ... [2022-11-16 16:23:36,592 INFO L112 eAbstractionObserver]: Analyzing ICFG ps4-ll_valuebound1.c [2022-11-16 16:23:36,611 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 16:23:36,611 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-16 16:23:36,661 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 16:23:36,668 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@64ddacdb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 16:23:36,668 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-16 16:23:36,672 INFO L276 IsEmpty]: Start isEmpty. Operand has 14 states, 8 states have (on average 1.5) internal successors, (12), 9 states have internal predecessors, (12), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 16:23:36,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-16 16:23:36,680 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:23:36,680 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-16 16:23:36,681 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 16:23:36,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:23:36,687 INFO L85 PathProgramCache]: Analyzing trace with hash -1757604175, now seen corresponding path program 1 times [2022-11-16 16:23:36,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:23:36,698 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250535180] [2022-11-16 16:23:36,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:23:36,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:23:36,794 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 16:23:36,795 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [821637554] [2022-11-16 16:23:36,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:23:36,796 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 16:23:36,796 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1660a4fa-a063-481a-846c-62a5f4ea0231/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 16:23:36,803 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1660a4fa-a063-481a-846c-62a5f4ea0231/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 16:23:36,825 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1660a4fa-a063-481a-846c-62a5f4ea0231/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 16:23:36,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:23:36,868 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-16 16:23:36,877 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 16:23:37,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 16:23:37,096 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 16:23:37,096 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:23:37,097 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250535180] [2022-11-16 16:23:37,097 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 16:23:37,097 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [821637554] [2022-11-16 16:23:37,098 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [821637554] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:23:37,098 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 16:23:37,098 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 16:23:37,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929013168] [2022-11-16 16:23:37,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:23:37,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 16:23:37,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:23:37,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 16:23:37,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 16:23:37,137 INFO L87 Difference]: Start difference. First operand has 14 states, 8 states have (on average 1.5) internal successors, (12), 9 states have internal predecessors, (12), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 5 states, 5 states have (on average 1.0) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 16:23:37,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:23:37,271 INFO L93 Difference]: Finished difference Result 38 states and 56 transitions. [2022-11-16 16:23:37,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 16:23:37,274 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.0) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-16 16:23:37,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:23:37,280 INFO L225 Difference]: With dead ends: 38 [2022-11-16 16:23:37,280 INFO L226 Difference]: Without dead ends: 19 [2022-11-16 16:23:37,283 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-16 16:23:37,290 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 7 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 16:23:37,292 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 35 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 16:23:37,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2022-11-16 16:23:37,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2022-11-16 16:23:37,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 13 states have internal predecessors, (14), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 16:23:37,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2022-11-16 16:23:37,360 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 6 [2022-11-16 16:23:37,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:23:37,361 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2022-11-16 16:23:37,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.0) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 16:23:37,362 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2022-11-16 16:23:37,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-16 16:23:37,364 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:23:37,365 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 16:23:37,377 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1660a4fa-a063-481a-846c-62a5f4ea0231/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-16 16:23:37,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1660a4fa-a063-481a-846c-62a5f4ea0231/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-11-16 16:23:37,572 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 16:23:37,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:23:37,575 INFO L85 PathProgramCache]: Analyzing trace with hash -19935186, now seen corresponding path program 1 times [2022-11-16 16:23:37,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:23:37,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622906566] [2022-11-16 16:23:37,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:23:37,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:23:37,601 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 16:23:37,609 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [996211775] [2022-11-16 16:23:37,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:23:37,611 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 16:23:37,611 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1660a4fa-a063-481a-846c-62a5f4ea0231/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 16:23:37,613 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1660a4fa-a063-481a-846c-62a5f4ea0231/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 16:23:37,619 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1660a4fa-a063-481a-846c-62a5f4ea0231/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 16:23:37,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:23:37,670 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-16 16:23:37,672 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 16:23:37,796 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 16:23:37,796 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 16:23:38,215 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 16:23:38,218 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:23:38,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622906566] [2022-11-16 16:23:38,219 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 16:23:38,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [996211775] [2022-11-16 16:23:38,220 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [996211775] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 16:23:38,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [119132536] [2022-11-16 16:23:38,250 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2022-11-16 16:23:38,251 INFO L166 IcfgInterpreter]: Building call graph [2022-11-16 16:23:38,256 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-16 16:23:38,262 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-16 16:23:38,268 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-16 16:23:39,686 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 38 for LOIs [2022-11-16 16:23:39,697 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-16 16:23:40,435 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [119132536] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:23:40,436 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-16 16:23:40,436 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8, 6] total 14 [2022-11-16 16:23:40,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167037196] [2022-11-16 16:23:40,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:23:40,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 16:23:40,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:23:40,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 16:23:40,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2022-11-16 16:23:40,439 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-16 16:23:40,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:23:40,510 INFO L93 Difference]: Finished difference Result 19 states and 21 transitions. [2022-11-16 16:23:40,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 16:23:40,510 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2022-11-16 16:23:40,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:23:40,511 INFO L225 Difference]: With dead ends: 19 [2022-11-16 16:23:40,511 INFO L226 Difference]: Without dead ends: 0 [2022-11-16 16:23:40,514 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 19 SyntacticMatches, 6 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2022-11-16 16:23:40,516 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 4 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 16:23:40,522 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 7 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 16:23:40,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-16 16:23:40,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-16 16:23:40,524 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) [2022-11-16 16:23:40,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-16 16:23:40,525 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2022-11-16 16:23:40,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:23:40,525 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-16 16:23:40,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-16 16:23:40,525 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-16 16:23:40,526 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-16 16:23:40,528 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-16 16:23:40,538 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1660a4fa-a063-481a-846c-62a5f4ea0231/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-16 16:23:40,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1660a4fa-a063-481a-846c-62a5f4ea0231/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 16:23:40,740 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-16 16:23:41,722 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-16 16:23:41,724 INFO L895 garLoopResultBuilder]: At program point L27-2(lines 27 36) the Hoare annotation is: (and (let ((.cse14 (select |#memory_int| 1))) (let ((.cse0 (= (select |#length| 3) 12)) (.cse1 (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| (ite (and (<= 0 |ULTIMATE.start_main_~k~0#1|) (<= |ULTIMATE.start_main_~k~0#1| 1)) 1 0))) (.cse2 (= 2 (select |#length| 1))) (.cse3 (= (select |#valid| 3) 1)) (.cse4 (= 9 (select |#length| 2))) (.cse5 (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| |ULTIMATE.start_assume_abort_if_not_~cond#1|)) (.cse6 (= (select |#valid| 1) 1)) (.cse7 (= (select |#valid| 0) 0)) (.cse8 (not (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0))) (.cse9 (= (select |#valid| 2) 1)) (.cse10 (= (select .cse14 0) 48)) (.cse11 (= (select .cse14 1) 0)) (.cse12 (< 0 |#StackHeapBarrier|)) (.cse13 (= |#NULL.base| 0))) (or (and (= |ULTIMATE.start_main_~c~0#1| 0) .cse0 .cse1 .cse2 .cse3 .cse4 (= |ULTIMATE.start_main_~y~0#1| 0) .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 (= |ULTIMATE.start_main_~x~0#1| 0) .cse11 .cse12 .cse13) (and .cse0 .cse1 (= |ULTIMATE.start_main_~c~0#1| 1) .cse2 .cse3 .cse4 (= |ULTIMATE.start_main_~y~0#1| 1) .cse5 .cse6 (< 0 |ULTIMATE.start_main_~k~0#1|) .cse7 .cse8 .cse9 .cse10 .cse11 (= (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~x~0#1|) .cse12 .cse13)))) (<= |#NULL.offset| 0) (<= 0 |#NULL.offset|)) [2022-11-16 16:23:41,724 INFO L895 garLoopResultBuilder]: At program point L27-3(lines 27 36) the Hoare annotation is: (or (let ((.cse0 (select |#memory_int| 1))) (and (= (select |#length| 3) 12) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| (ite (and (<= 0 |ULTIMATE.start_main_~k~0#1|) (<= |ULTIMATE.start_main_~k~0#1| 1)) 1 0)) (= |ULTIMATE.start_main_~c~0#1| 1) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (<= |#NULL.offset| 0) (= 9 (select |#length| 2)) (= |ULTIMATE.start_main_~y~0#1| 1) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| |ULTIMATE.start_assume_abort_if_not_~cond#1|) (= (select |#valid| 1) 1) (< 0 |ULTIMATE.start_main_~k~0#1|) (= (select |#valid| 0) 0) (not (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0)) (= (select |#valid| 2) 1) (= (select .cse0 0) 48) (<= 0 |#NULL.offset|) (= (select .cse0 1) 0) (= (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~x~0#1|) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))) (and (= |ULTIMATE.start_main_~y~0#1| 0) (= |ULTIMATE.start_main_~x~0#1| 0))) [2022-11-16 16:23:41,724 INFO L902 garLoopResultBuilder]: At program point L38(line 38) the Hoare annotation is: true [2022-11-16 16:23:41,724 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-11-16 16:23:41,725 INFO L895 garLoopResultBuilder]: At program point L28(line 28) the Hoare annotation is: (and (let ((.cse14 (select |#memory_int| 1))) (let ((.cse0 (= (select |#length| 3) 12)) (.cse1 (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| (ite (and (<= 0 |ULTIMATE.start_main_~k~0#1|) (<= |ULTIMATE.start_main_~k~0#1| 1)) 1 0))) (.cse2 (= 2 (select |#length| 1))) (.cse3 (= (select |#valid| 3) 1)) (.cse4 (= 9 (select |#length| 2))) (.cse5 (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| |ULTIMATE.start_assume_abort_if_not_~cond#1|)) (.cse6 (= (select |#valid| 1) 1)) (.cse7 (= (select |#valid| 0) 0)) (.cse8 (not (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0))) (.cse9 (= (select |#valid| 2) 1)) (.cse10 (= (select .cse14 0) 48)) (.cse11 (= (select .cse14 1) 0)) (.cse12 (< 0 |#StackHeapBarrier|)) (.cse13 (= |#NULL.base| 0))) (or (and (= |ULTIMATE.start_main_~c~0#1| 0) .cse0 .cse1 .cse2 .cse3 .cse4 (= |ULTIMATE.start_main_~y~0#1| 0) .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 (= |ULTIMATE.start_main_~x~0#1| 0) .cse11 .cse12 .cse13) (and .cse0 .cse1 (= |ULTIMATE.start_main_~c~0#1| 1) .cse2 .cse3 .cse4 (= |ULTIMATE.start_main_~y~0#1| 1) .cse5 .cse6 (< 0 |ULTIMATE.start_main_~k~0#1|) .cse7 .cse8 .cse9 .cse10 .cse11 (= (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~x~0#1|) .cse12 .cse13)))) (<= |#NULL.offset| 0) (<= 0 |#NULL.offset|)) [2022-11-16 16:23:41,725 INFO L899 garLoopResultBuilder]: For program point L28-1(lines 27 36) no Hoare annotation was computed. [2022-11-16 16:23:41,725 INFO L895 garLoopResultBuilder]: At program point L37(line 37) the Hoare annotation is: (or (let ((.cse0 (select |#memory_int| 1))) (and (= (select |#length| 3) 12) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| (ite (and (<= 0 |ULTIMATE.start_main_~k~0#1|) (<= |ULTIMATE.start_main_~k~0#1| 1)) 1 0)) (= |ULTIMATE.start_main_~c~0#1| 1) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (<= |#NULL.offset| 0) (= 9 (select |#length| 2)) (= |ULTIMATE.start_main_~y~0#1| 1) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| |ULTIMATE.start_assume_abort_if_not_~cond#1|) (= (select |#valid| 1) 1) (< 0 |ULTIMATE.start_main_~k~0#1|) (= (select |#valid| 0) 0) (not (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0)) (= (select |#valid| 2) 1) (= (select .cse0 0) 48) (<= 0 |#NULL.offset|) (= (select .cse0 1) 0) (= (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~x~0#1|) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))) (and (= |ULTIMATE.start_main_~y~0#1| 0) (= |ULTIMATE.start_main_~x~0#1| 0))) [2022-11-16 16:23:41,726 INFO L902 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 9 15) the Hoare annotation is: true [2022-11-16 16:23:41,726 INFO L899 garLoopResultBuilder]: For program point L11(lines 11 12) no Hoare annotation was computed. [2022-11-16 16:23:41,726 INFO L899 garLoopResultBuilder]: For program point L10(lines 10 13) no Hoare annotation was computed. [2022-11-16 16:23:41,726 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 9 15) no Hoare annotation was computed. [2022-11-16 16:23:41,726 INFO L899 garLoopResultBuilder]: For program point L10-2(lines 9 15) no Hoare annotation was computed. [2022-11-16 16:23:41,726 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2022-11-16 16:23:41,730 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1] [2022-11-16 16:23:41,733 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-16 16:23:41,770 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.11 04:23:41 BoogieIcfgContainer [2022-11-16 16:23:41,771 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-16 16:23:41,771 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-16 16:23:41,772 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-16 16:23:41,772 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-16 16:23:41,773 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 04:23:36" (3/4) ... [2022-11-16 16:23:41,776 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-16 16:23:41,782 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2022-11-16 16:23:41,788 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2022-11-16 16:23:41,789 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2022-11-16 16:23:41,789 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-11-16 16:23:41,789 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-16 16:23:41,818 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((((((((((((((c == 0 && unknown-#length-unknown[3] == 12) && \old(cond) == (if 0 <= k && k <= 1 then 1 else 0)) && 2 == unknown-#length-unknown[1]) && \valid[3] == 1) && 9 == unknown-#length-unknown[2]) && y == 0) && \old(cond) == cond) && \valid[1] == 1) && \valid[0] == 0) && !(cond == 0)) && \valid[2] == 1) && unknown-#memory_int-unknown[1][0] == 48) && x == 0) && unknown-#memory_int-unknown[1][1] == 0) && 0 < unknown-#StackHeapBarrier-unknown) && #NULL == 0) || (((((((((((((((((unknown-#length-unknown[3] == 12 && \old(cond) == (if 0 <= k && k <= 1 then 1 else 0)) && c == 1) && 2 == unknown-#length-unknown[1]) && \valid[3] == 1) && 9 == unknown-#length-unknown[2]) && y == 1) && \old(cond) == cond) && \valid[1] == 1) && 0 < k) && \valid[0] == 0) && !(cond == 0)) && \valid[2] == 1) && unknown-#memory_int-unknown[1][0] == 48) && unknown-#memory_int-unknown[1][1] == 0) && y * y * y == x) && 0 < unknown-#StackHeapBarrier-unknown) && #NULL == 0)) && #NULL <= 0) && 0 <= #NULL [2022-11-16 16:23:41,834 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1660a4fa-a063-481a-846c-62a5f4ea0231/bin/utaipan-Xvt2sAort0/witness.graphml [2022-11-16 16:23:41,835 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-16 16:23:41,835 INFO L158 Benchmark]: Toolchain (without parser) took 5913.54ms. Allocated memory was 134.2MB in the beginning and 190.8MB in the end (delta: 56.6MB). Free memory was 100.2MB in the beginning and 63.8MB in the end (delta: 36.5MB). Peak memory consumption was 92.7MB. Max. memory is 16.1GB. [2022-11-16 16:23:41,836 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 88.1MB. Free memory was 42.8MB in the beginning and 42.7MB in the end (delta: 39.6kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 16:23:41,836 INFO L158 Benchmark]: CACSL2BoogieTranslator took 275.92ms. Allocated memory is still 134.2MB. Free memory was 100.0MB in the beginning and 108.5MB in the end (delta: -8.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-16 16:23:41,836 INFO L158 Benchmark]: Boogie Procedure Inliner took 30.91ms. Allocated memory is still 134.2MB. Free memory was 108.5MB in the beginning and 107.0MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 16:23:41,837 INFO L158 Benchmark]: Boogie Preprocessor took 19.81ms. Allocated memory is still 134.2MB. Free memory was 107.0MB in the beginning and 106.0MB in the end (delta: 996.5kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 16:23:41,837 INFO L158 Benchmark]: RCFGBuilder took 327.90ms. Allocated memory is still 134.2MB. Free memory was 106.0MB in the beginning and 94.5MB in the end (delta: 11.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-16 16:23:41,838 INFO L158 Benchmark]: TraceAbstraction took 5185.38ms. Allocated memory was 134.2MB in the beginning and 190.8MB in the end (delta: 56.6MB). Free memory was 93.5MB in the beginning and 65.9MB in the end (delta: 27.6MB). Peak memory consumption was 85.2MB. Max. memory is 16.1GB. [2022-11-16 16:23:41,838 INFO L158 Benchmark]: Witness Printer took 63.37ms. Allocated memory is still 190.8MB. Free memory was 65.9MB in the beginning and 63.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 16:23:41,841 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 88.1MB. Free memory was 42.8MB in the beginning and 42.7MB in the end (delta: 39.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 275.92ms. Allocated memory is still 134.2MB. Free memory was 100.0MB in the beginning and 108.5MB in the end (delta: -8.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 30.91ms. Allocated memory is still 134.2MB. Free memory was 108.5MB in the beginning and 107.0MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 19.81ms. Allocated memory is still 134.2MB. Free memory was 107.0MB in the beginning and 106.0MB in the end (delta: 996.5kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 327.90ms. Allocated memory is still 134.2MB. Free memory was 106.0MB in the beginning and 94.5MB in the end (delta: 11.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 5185.38ms. Allocated memory was 134.2MB in the beginning and 190.8MB in the end (delta: 56.6MB). Free memory was 93.5MB in the beginning and 65.9MB in the end (delta: 27.6MB). Peak memory consumption was 85.2MB. Max. memory is 16.1GB. * Witness Printer took 63.37ms. Allocated memory is still 190.8MB. Free memory was 65.9MB in the beginning and 63.8MB in the end (delta: 2.1MB). 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: 12]: 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 2 procedures, 14 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 5.1s, OverallIterations: 2, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 15 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 11 mSDsluCounter, 42 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 26 mSDsCounter, 6 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 57 IncrementalHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6 mSolverCounterUnsat, 16 mSDtfsCounter, 57 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 43 GetRequests, 21 SyntacticMatches, 6 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred in iteration=1, InterpolantAutomatonStates: 10, 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, 6 LocationsWithAnnotation, 14 PreInvPairs, 24 NumberOfFragments, 574 HoareAnnotationTreeSize, 14 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 6 FomulaSimplificationsInter, 686 FormulaSimplificationTreeSizeReductionInter, 1.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 19 NumberOfCodeBlocks, 19 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 29 ConstructedInterpolants, 0 QuantifiedInterpolants, 166 SizeOfPredicates, 6 NumberOfNonLiveVariables, 113 ConjunctsInSsa, 34 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 4/8 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: 1.4s, ICFG_INTERPRETER_ENTERED_PROCEDURES: 2, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 9, DAG_INTERPRETER_EARLY_EXITS: 1, TOOLS_POST_APPLICATIONS: 13, TOOLS_POST_TIME: 0.1s, TOOLS_POST_CALL_APPLICATIONS: 7, TOOLS_POST_CALL_TIME: 1.0s, TOOLS_POST_RETURN_APPLICATIONS: 6, TOOLS_POST_RETURN_TIME: 0.1s, TOOLS_QUANTIFIERELIM_APPLICATIONS: 26, TOOLS_QUANTIFIERELIM_TIME: 1.2s, TOOLS_QUANTIFIERELIM_MAX_TIME: 0.3s, FLUID_QUERY_TIME: 0.0s, FLUID_QUERIES: 37, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 3, DOMAIN_JOIN_TIME: 0.1s, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME: 0.0s, DOMAIN_WIDEN_APPLICATIONS: 1, DOMAIN_WIDEN_TIME: 0.0s, DOMAIN_ISSUBSETEQ_APPLICATIONS: 2, DOMAIN_ISSUBSETEQ_TIME: 0.0s, DOMAIN_ISBOTTOM_APPLICATIONS: 9, DOMAIN_ISBOTTOM_TIME: 0.0s, LOOP_SUMMARIZER_APPLICATIONS: 1, LOOP_SUMMARIZER_CACHE_MISSES: 1, LOOP_SUMMARIZER_OVERALL_TIME: 0.8s, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME: 0.8s, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 2, CALL_SUMMARIZER_APPLICATIONS: 6, CALL_SUMMARIZER_CACHE_MISSES: 1, 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: 55, DAG_COMPRESSION_RETAINED_NODES: 34, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 38]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 27]: Loop Invariant Derived loop invariant: ((((((((((((((((((c == 0 && unknown-#length-unknown[3] == 12) && \old(cond) == (if 0 <= k && k <= 1 then 1 else 0)) && 2 == unknown-#length-unknown[1]) && \valid[3] == 1) && 9 == unknown-#length-unknown[2]) && y == 0) && \old(cond) == cond) && \valid[1] == 1) && \valid[0] == 0) && !(cond == 0)) && \valid[2] == 1) && unknown-#memory_int-unknown[1][0] == 48) && x == 0) && unknown-#memory_int-unknown[1][1] == 0) && 0 < unknown-#StackHeapBarrier-unknown) && #NULL == 0) || (((((((((((((((((unknown-#length-unknown[3] == 12 && \old(cond) == (if 0 <= k && k <= 1 then 1 else 0)) && c == 1) && 2 == unknown-#length-unknown[1]) && \valid[3] == 1) && 9 == unknown-#length-unknown[2]) && y == 1) && \old(cond) == cond) && \valid[1] == 1) && 0 < k) && \valid[0] == 0) && !(cond == 0)) && \valid[2] == 1) && unknown-#memory_int-unknown[1][0] == 48) && unknown-#memory_int-unknown[1][1] == 0) && y * y * y == x) && 0 < unknown-#StackHeapBarrier-unknown) && #NULL == 0)) && #NULL <= 0) && 0 <= #NULL RESULT: Ultimate proved your program to be correct! [2022-11-16 16:23:41,891 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1660a4fa-a063-481a-846c-62a5f4ea0231/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE