./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-new/gauss_sum.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e7fbc69 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_96175126-4d67-4b01-9c7d-89e42dbc2c83/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96175126-4d67-4b01-9c7d-89e42dbc2c83/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96175126-4d67-4b01-9c7d-89e42dbc2c83/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96175126-4d67-4b01-9c7d-89e42dbc2c83/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-new/gauss_sum.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96175126-4d67-4b01-9c7d-89e42dbc2c83/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96175126-4d67-4b01-9c7d-89e42dbc2c83/bin/utaipan-Q6hlc19bkW --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 ac0c39e955880a6b0806ad5f8add28438e78eb47defb435342badf7c95feaa91 --- 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-4e7fbc6 [2022-11-23 15:48:19,240 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 15:48:19,244 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 15:48:19,294 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 15:48:19,294 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 15:48:19,296 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 15:48:19,297 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 15:48:19,300 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 15:48:19,306 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 15:48:19,313 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 15:48:19,315 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 15:48:19,319 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 15:48:19,320 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 15:48:19,323 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 15:48:19,326 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 15:48:19,329 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 15:48:19,331 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 15:48:19,332 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 15:48:19,334 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 15:48:19,341 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 15:48:19,343 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 15:48:19,346 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 15:48:19,348 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 15:48:19,349 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 15:48:19,361 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 15:48:19,362 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 15:48:19,362 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 15:48:19,365 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 15:48:19,366 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 15:48:19,367 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 15:48:19,367 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 15:48:19,368 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 15:48:19,370 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 15:48:19,372 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 15:48:19,374 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 15:48:19,375 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 15:48:19,375 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 15:48:19,376 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 15:48:19,376 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 15:48:19,377 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 15:48:19,378 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 15:48:19,379 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96175126-4d67-4b01-9c7d-89e42dbc2c83/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-23 15:48:19,433 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 15:48:19,433 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 15:48:19,434 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 15:48:19,434 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 15:48:19,435 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 15:48:19,436 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 15:48:19,436 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 15:48:19,436 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 15:48:19,436 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 15:48:19,437 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 15:48:19,438 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 15:48:19,438 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 15:48:19,439 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 15:48:19,439 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 15:48:19,439 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 15:48:19,439 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 15:48:19,440 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 15:48:19,440 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 15:48:19,441 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 15:48:19,441 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 15:48:19,441 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 15:48:19,442 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 15:48:19,442 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 15:48:19,442 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 15:48:19,442 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 15:48:19,443 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 15:48:19,443 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 15:48:19,444 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 15:48:19,444 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 15:48:19,444 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 15:48:19,444 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 15:48:19,445 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 15:48:19,445 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:48:19,445 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 15:48:19,446 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 15:48:19,446 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 15:48:19,446 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 15:48:19,446 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 15:48:19,447 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 15:48:19,447 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 15:48:19,447 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 15:48:19,447 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_96175126-4d67-4b01-9c7d-89e42dbc2c83/bin/utaipan-Q6hlc19bkW/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96175126-4d67-4b01-9c7d-89e42dbc2c83/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ac0c39e955880a6b0806ad5f8add28438e78eb47defb435342badf7c95feaa91 [2022-11-23 15:48:19,826 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 15:48:19,858 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 15:48:19,862 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 15:48:19,863 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 15:48:19,864 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 15:48:19,866 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96175126-4d67-4b01-9c7d-89e42dbc2c83/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/loop-new/gauss_sum.i [2022-11-23 15:48:23,557 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 15:48:23,826 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 15:48:23,827 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96175126-4d67-4b01-9c7d-89e42dbc2c83/sv-benchmarks/c/loop-new/gauss_sum.i [2022-11-23 15:48:23,836 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96175126-4d67-4b01-9c7d-89e42dbc2c83/bin/utaipan-Q6hlc19bkW/data/ae240a2fd/5b5798fafc244d84935ad6d19da4c82a/FLAG08cd88426 [2022-11-23 15:48:23,862 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96175126-4d67-4b01-9c7d-89e42dbc2c83/bin/utaipan-Q6hlc19bkW/data/ae240a2fd/5b5798fafc244d84935ad6d19da4c82a [2022-11-23 15:48:23,865 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 15:48:23,867 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 15:48:23,872 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 15:48:23,872 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 15:48:23,877 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 15:48:23,878 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:48:23" (1/1) ... [2022-11-23 15:48:23,879 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b811dbb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:48:23, skipping insertion in model container [2022-11-23 15:48:23,881 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:48:23" (1/1) ... [2022-11-23 15:48:23,891 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 15:48:23,920 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 15:48:24,093 WARN L237 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_96175126-4d67-4b01-9c7d-89e42dbc2c83/sv-benchmarks/c/loop-new/gauss_sum.i[891,904] [2022-11-23 15:48:24,107 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:48:24,119 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 15:48:24,136 WARN L237 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_96175126-4d67-4b01-9c7d-89e42dbc2c83/sv-benchmarks/c/loop-new/gauss_sum.i[891,904] [2022-11-23 15:48:24,139 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:48:24,156 INFO L208 MainTranslator]: Completed translation [2022-11-23 15:48:24,156 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:48:24 WrapperNode [2022-11-23 15:48:24,157 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 15:48:24,158 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 15:48:24,158 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 15:48:24,159 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 15:48:24,167 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:48:24" (1/1) ... [2022-11-23 15:48:24,175 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:48:24" (1/1) ... [2022-11-23 15:48:24,196 INFO L138 Inliner]: procedures = 16, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 37 [2022-11-23 15:48:24,196 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 15:48:24,197 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 15:48:24,197 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 15:48:24,197 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 15:48:24,208 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:48:24" (1/1) ... [2022-11-23 15:48:24,208 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:48:24" (1/1) ... [2022-11-23 15:48:24,209 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:48:24" (1/1) ... [2022-11-23 15:48:24,210 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:48:24" (1/1) ... [2022-11-23 15:48:24,223 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:48:24" (1/1) ... [2022-11-23 15:48:24,227 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:48:24" (1/1) ... [2022-11-23 15:48:24,228 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:48:24" (1/1) ... [2022-11-23 15:48:24,229 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:48:24" (1/1) ... [2022-11-23 15:48:24,231 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 15:48:24,232 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 15:48:24,232 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 15:48:24,232 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 15:48:24,236 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:48:24" (1/1) ... [2022-11-23 15:48:24,244 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:48:24,256 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96175126-4d67-4b01-9c7d-89e42dbc2c83/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:48:24,271 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96175126-4d67-4b01-9c7d-89e42dbc2c83/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 15:48:24,286 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96175126-4d67-4b01-9c7d-89e42dbc2c83/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 15:48:24,318 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 15:48:24,319 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 15:48:24,319 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 15:48:24,319 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 15:48:24,419 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 15:48:24,422 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 15:48:24,635 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 15:48:24,667 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 15:48:24,667 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-23 15:48:24,673 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:48:24 BoogieIcfgContainer [2022-11-23 15:48:24,673 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 15:48:24,677 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 15:48:24,678 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 15:48:24,682 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 15:48:24,682 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:48:23" (1/3) ... [2022-11-23 15:48:24,683 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e8ae5d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:48:24, skipping insertion in model container [2022-11-23 15:48:24,683 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:48:24" (2/3) ... [2022-11-23 15:48:24,686 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e8ae5d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:48:24, skipping insertion in model container [2022-11-23 15:48:24,687 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:48:24" (3/3) ... [2022-11-23 15:48:24,688 INFO L112 eAbstractionObserver]: Analyzing ICFG gauss_sum.i [2022-11-23 15:48:24,716 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 15:48:24,716 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-23 15:48:24,810 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 15:48:24,820 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;@56e05744, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 15:48:24,822 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-23 15:48:24,828 INFO L276 IsEmpty]: Start isEmpty. Operand has 9 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 8 states have internal predecessors, (11), 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) [2022-11-23 15:48:24,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-23 15:48:24,840 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:48:24,841 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-23 15:48:24,842 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:48:24,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:48:24,852 INFO L85 PathProgramCache]: Analyzing trace with hash 62123654, now seen corresponding path program 1 times [2022-11-23 15:48:24,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:48:24,865 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8496845] [2022-11-23 15:48:24,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:48:24,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:48:25,011 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 15:48:25,011 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [347919511] [2022-11-23 15:48:25,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:48:25,012 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:48:25,012 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96175126-4d67-4b01-9c7d-89e42dbc2c83/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:48:25,014 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96175126-4d67-4b01-9c7d-89e42dbc2c83/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:48:25,016 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96175126-4d67-4b01-9c7d-89e42dbc2c83/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-23 15:48:25,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:48:25,074 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 15:48:25,079 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:48:25,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:48:25,165 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 15:48:25,166 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:48:25,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8496845] [2022-11-23 15:48:25,166 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 15:48:25,167 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [347919511] [2022-11-23 15:48:25,167 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [347919511] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:48:25,168 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:48:25,168 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:48:25,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110623643] [2022-11-23 15:48:25,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:48:25,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:48:25,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:48:25,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:48:25,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:48:25,216 INFO L87 Difference]: Start difference. First operand has 9 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 8 states have internal predecessors, (11), 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) Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 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) [2022-11-23 15:48:25,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:48:25,253 INFO L93 Difference]: Finished difference Result 16 states and 19 transitions. [2022-11-23 15:48:25,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:48:25,256 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 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) Word has length 5 [2022-11-23 15:48:25,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:48:25,266 INFO L225 Difference]: With dead ends: 16 [2022-11-23 15:48:25,266 INFO L226 Difference]: Without dead ends: 7 [2022-11-23 15:48:25,269 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:48:25,305 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 0 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 15:48:25,307 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 10 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 15:48:25,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2022-11-23 15:48:25,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2022-11-23 15:48:25,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 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) [2022-11-23 15:48:25,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2022-11-23 15:48:25,375 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 5 [2022-11-23 15:48:25,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:48:25,376 INFO L495 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2022-11-23 15:48:25,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 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) [2022-11-23 15:48:25,376 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2022-11-23 15:48:25,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-23 15:48:25,377 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:48:25,377 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-23 15:48:25,384 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96175126-4d67-4b01-9c7d-89e42dbc2c83/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-23 15:48:25,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96175126-4d67-4b01-9c7d-89e42dbc2c83/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-11-23 15:48:25,584 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:48:25,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:48:25,584 INFO L85 PathProgramCache]: Analyzing trace with hash 1925759241, now seen corresponding path program 1 times [2022-11-23 15:48:25,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:48:25,585 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401770858] [2022-11-23 15:48:25,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:48:25,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:48:25,604 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 15:48:25,605 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1032227271] [2022-11-23 15:48:25,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:48:25,606 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:48:25,606 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96175126-4d67-4b01-9c7d-89e42dbc2c83/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:48:25,607 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96175126-4d67-4b01-9c7d-89e42dbc2c83/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:48:25,621 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96175126-4d67-4b01-9c7d-89e42dbc2c83/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-23 15:48:25,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:48:25,693 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-23 15:48:25,696 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:48:25,892 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:48:25,892 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:48:26,006 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:48:26,006 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:48:26,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401770858] [2022-11-23 15:48:26,007 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 15:48:26,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1032227271] [2022-11-23 15:48:26,008 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1032227271] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:48:26,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [894602356] [2022-11-23 15:48:26,031 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2022-11-23 15:48:26,031 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 15:48:26,036 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 15:48:26,043 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 15:48:26,044 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 15:48:26,334 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 15:48:26,695 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '96#(and (<= 0 |ULTIMATE.start_main_~sum~0#1|) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| (ite (= (+ |ULTIMATE.start_main_~n~0#1| (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|)) (* 2 |ULTIMATE.start_main_~sum~0#1|)) 1 0)) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 1 |ULTIMATE.start_main_~n~0#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (not (<= |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_main_~n~0#1|)) (<= |ULTIMATE.start_main_~n~0#1| 1000) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-23 15:48:26,695 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 15:48:26,695 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-23 15:48:26,696 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-11-23 15:48:26,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315777711] [2022-11-23 15:48:26,697 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-23 15:48:26,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-23 15:48:26,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:48:26,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-23 15:48:26,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2022-11-23 15:48:26,700 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand has 8 states, 8 states have (on average 1.25) internal successors, (10), 8 states have internal predecessors, (10), 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) [2022-11-23 15:48:26,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:48:26,756 INFO L93 Difference]: Finished difference Result 11 states and 11 transitions. [2022-11-23 15:48:26,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 15:48:26,757 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.25) internal successors, (10), 8 states have internal predecessors, (10), 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) Word has length 6 [2022-11-23 15:48:26,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:48:26,758 INFO L225 Difference]: With dead ends: 11 [2022-11-23 15:48:26,758 INFO L226 Difference]: Without dead ends: 8 [2022-11-23 15:48:26,759 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2022-11-23 15:48:26,761 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 2 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 15:48:26,762 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 11 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 15:48:26,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2022-11-23 15:48:26,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2022-11-23 15:48:26,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 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) [2022-11-23 15:48:26,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2022-11-23 15:48:26,766 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 6 [2022-11-23 15:48:26,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:48:26,767 INFO L495 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2022-11-23 15:48:26,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.25) internal successors, (10), 8 states have internal predecessors, (10), 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) [2022-11-23 15:48:26,767 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2022-11-23 15:48:26,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-23 15:48:26,768 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:48:26,768 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2022-11-23 15:48:26,777 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96175126-4d67-4b01-9c7d-89e42dbc2c83/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-23 15:48:26,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96175126-4d67-4b01-9c7d-89e42dbc2c83/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:48:26,975 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:48:26,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:48:26,976 INFO L85 PathProgramCache]: Analyzing trace with hash -431079706, now seen corresponding path program 2 times [2022-11-23 15:48:26,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:48:26,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043982708] [2022-11-23 15:48:26,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:48:26,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:48:26,991 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 15:48:26,993 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [496260641] [2022-11-23 15:48:26,993 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-23 15:48:26,993 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:48:26,994 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96175126-4d67-4b01-9c7d-89e42dbc2c83/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:48:26,995 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96175126-4d67-4b01-9c7d-89e42dbc2c83/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:48:27,023 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96175126-4d67-4b01-9c7d-89e42dbc2c83/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-23 15:48:27,053 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-23 15:48:27,054 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 15:48:27,055 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-23 15:48:27,058 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:48:27,186 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 15:48:27,186 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:48:27,517 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 15:48:27,517 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:48:27,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043982708] [2022-11-23 15:48:27,518 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 15:48:27,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [496260641] [2022-11-23 15:48:27,519 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [496260641] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:48:27,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1952476834] [2022-11-23 15:48:27,530 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2022-11-23 15:48:27,530 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 15:48:27,531 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 15:48:27,531 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 15:48:27,531 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 15:48:27,666 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 15:48:28,020 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '172#(and (<= 0 |ULTIMATE.start_main_~sum~0#1|) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| (ite (= (+ |ULTIMATE.start_main_~n~0#1| (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|)) (* 2 |ULTIMATE.start_main_~sum~0#1|)) 1 0)) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 1 |ULTIMATE.start_main_~n~0#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (not (<= |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_main_~n~0#1|)) (<= |ULTIMATE.start_main_~n~0#1| 1000) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-23 15:48:28,020 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 15:48:28,020 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-23 15:48:28,020 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2022-11-23 15:48:28,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163872700] [2022-11-23 15:48:28,021 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-23 15:48:28,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-23 15:48:28,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:48:28,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-23 15:48:28,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2022-11-23 15:48:28,023 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand has 9 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 9 states have internal predecessors, (12), 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) [2022-11-23 15:48:28,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:48:28,506 INFO L93 Difference]: Finished difference Result 10 states and 11 transitions. [2022-11-23 15:48:28,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-23 15:48:28,507 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 9 states have internal predecessors, (12), 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) Word has length 7 [2022-11-23 15:48:28,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:48:28,507 INFO L225 Difference]: With dead ends: 10 [2022-11-23 15:48:28,507 INFO L226 Difference]: Without dead ends: 0 [2022-11-23 15:48:28,508 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=69, Invalid=273, Unknown=0, NotChecked=0, Total=342 [2022-11-23 15:48:28,509 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 5 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 15:48:28,510 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 3 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 15:48:28,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-23 15:48:28,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-23 15:48:28,511 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) [2022-11-23 15:48:28,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-23 15:48:28,512 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 7 [2022-11-23 15:48:28,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:48:28,512 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-23 15:48:28,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 9 states have internal predecessors, (12), 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) [2022-11-23 15:48:28,513 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-23 15:48:28,513 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-23 15:48:28,516 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-23 15:48:28,527 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96175126-4d67-4b01-9c7d-89e42dbc2c83/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-23 15:48:28,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96175126-4d67-4b01-9c7d-89e42dbc2c83/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-11-23 15:48:28,723 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-23 15:48:28,850 INFO L902 garLoopResultBuilder]: At program point L33(lines 24 34) the Hoare annotation is: true [2022-11-23 15:48:28,851 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-23 15:48:28,851 INFO L899 garLoopResultBuilder]: For program point L27(line 27) no Hoare annotation was computed. [2022-11-23 15:48:28,853 INFO L895 garLoopResultBuilder]: At program point L29-3(lines 29 31) the Hoare annotation is: (let ((.cse0 (* 2 |ULTIMATE.start_main_~sum~0#1|))) (and (or (<= |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_main_~n~0#1|) (= (+ |ULTIMATE.start_main_~n~0#1| (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|)) .cse0)) (forall ((|ULTIMATE.start_main_~n~0#1| Int)) (or (= (+ |ULTIMATE.start_main_~n~0#1| (* |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~n~0#1|)) (+ .cse0 (* 2 |ULTIMATE.start_main_~i~0#1|))) (< |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_main_~n~0#1|) (not (<= |ULTIMATE.start_main_~i~0#1| |ULTIMATE.start_main_~n~0#1|)))))) [2022-11-23 15:48:28,853 INFO L899 garLoopResultBuilder]: For program point L19(line 19) no Hoare annotation was computed. [2022-11-23 15:48:28,853 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-11-23 15:48:28,854 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2022-11-23 15:48:28,854 INFO L899 garLoopResultBuilder]: For program point L18(lines 18 20) no Hoare annotation was computed. [2022-11-23 15:48:28,854 INFO L902 garLoopResultBuilder]: At program point L18-2(lines 17 22) the Hoare annotation is: true [2022-11-23 15:48:28,858 INFO L444 BasicCegarLoop]: Path program histogram: [2, 1] [2022-11-23 15:48:28,861 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-23 15:48:28,876 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~n~0#1,QUANTIFIED] [2022-11-23 15:48:28,877 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~n~0#1,QUANTIFIED] [2022-11-23 15:48:28,878 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~n~0#1,QUANTIFIED] [2022-11-23 15:48:28,878 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~n~0#1,QUANTIFIED] [2022-11-23 15:48:28,882 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~n~0#1,QUANTIFIED] [2022-11-23 15:48:28,891 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~n~0#1,QUANTIFIED] [2022-11-23 15:48:28,891 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~n~0#1,QUANTIFIED] [2022-11-23 15:48:28,892 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~n~0#1,QUANTIFIED] [2022-11-23 15:48:28,892 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~n~0#1,QUANTIFIED] [2022-11-23 15:48:28,892 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~n~0#1,QUANTIFIED] [2022-11-23 15:48:28,896 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 03:48:28 BoogieIcfgContainer [2022-11-23 15:48:28,896 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-23 15:48:28,898 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-23 15:48:28,905 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-23 15:48:28,906 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-23 15:48:28,906 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:48:24" (3/4) ... [2022-11-23 15:48:28,911 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-23 15:48:28,922 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2022-11-23 15:48:28,923 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2022-11-23 15:48:28,923 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-11-23 15:48:28,923 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-23 15:48:28,977 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96175126-4d67-4b01-9c7d-89e42dbc2c83/bin/utaipan-Q6hlc19bkW/witness.graphml [2022-11-23 15:48:28,977 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-23 15:48:28,978 INFO L158 Benchmark]: Toolchain (without parser) took 5111.32ms. Allocated memory is still 167.8MB. Free memory was 122.1MB in the beginning and 78.8MB in the end (delta: 43.2MB). Peak memory consumption was 46.4MB. Max. memory is 16.1GB. [2022-11-23 15:48:28,978 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 134.2MB. Free memory is still 79.0MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 15:48:28,978 INFO L158 Benchmark]: CACSL2BoogieTranslator took 285.34ms. Allocated memory is still 167.8MB. Free memory was 122.1MB in the beginning and 112.0MB in the end (delta: 10.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-23 15:48:28,979 INFO L158 Benchmark]: Boogie Procedure Inliner took 38.17ms. Allocated memory is still 167.8MB. Free memory was 112.0MB in the beginning and 110.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 15:48:28,979 INFO L158 Benchmark]: Boogie Preprocessor took 34.17ms. Allocated memory is still 167.8MB. Free memory was 110.4MB in the beginning and 109.5MB in the end (delta: 962.9kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 15:48:28,980 INFO L158 Benchmark]: RCFGBuilder took 441.65ms. Allocated memory is still 167.8MB. Free memory was 109.5MB in the beginning and 99.0MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-23 15:48:28,980 INFO L158 Benchmark]: TraceAbstraction took 4219.23ms. Allocated memory is still 167.8MB. Free memory was 98.4MB in the beginning and 80.9MB in the end (delta: 17.5MB). Peak memory consumption was 19.1MB. Max. memory is 16.1GB. [2022-11-23 15:48:28,980 INFO L158 Benchmark]: Witness Printer took 80.15ms. Allocated memory is still 167.8MB. Free memory was 80.9MB in the beginning and 78.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 15:48:28,982 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 134.2MB. Free memory is still 79.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 285.34ms. Allocated memory is still 167.8MB. Free memory was 122.1MB in the beginning and 112.0MB in the end (delta: 10.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 38.17ms. Allocated memory is still 167.8MB. Free memory was 112.0MB in the beginning and 110.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 34.17ms. Allocated memory is still 167.8MB. Free memory was 110.4MB in the beginning and 109.5MB in the end (delta: 962.9kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 441.65ms. Allocated memory is still 167.8MB. Free memory was 109.5MB in the beginning and 99.0MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 4219.23ms. Allocated memory is still 167.8MB. Free memory was 98.4MB in the beginning and 80.9MB in the end (delta: 17.5MB). Peak memory consumption was 19.1MB. Max. memory is 16.1GB. * Witness Printer took 80.15ms. Allocated memory is still 167.8MB. Free memory was 80.9MB in the beginning and 78.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~n~0#1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~n~0#1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~n~0#1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~n~0#1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~n~0#1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~n~0#1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~n~0#1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~n~0#1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~n~0#1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~n~0#1,QUANTIFIED] * 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: 19]: 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 1 procedures, 9 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 4.1s, OverallIterations: 3, TraceHistogramMax: 2, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 7 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 7 mSDsluCounter, 24 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 14 mSDsCounter, 3 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 61 IncrementalHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3 mSolverCounterUnsat, 10 mSDtfsCounter, 61 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 46 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 1.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9occurred in iteration=0, InterpolantAutomatonStates: 16, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 8 NumberOfFragments, 38 HoareAnnotationTreeSize, 3 FomulaSimplifications, 6 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 81 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 26 ConstructedInterpolants, 2 QuantifiedInterpolants, 165 SizeOfPredicates, 12 NumberOfNonLiveVariables, 126 ConjunctsInSsa, 37 ConjunctsInUnsatCore, 5 InterpolantComputations, 1 PerfectInterpolantSequences, 1/8 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: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 29]: Loop Invariant [2022-11-23 15:48:29,005 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~n~0#1,QUANTIFIED] [2022-11-23 15:48:29,006 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~n~0#1,QUANTIFIED] [2022-11-23 15:48:29,006 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~n~0#1,QUANTIFIED] [2022-11-23 15:48:29,006 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~n~0#1,QUANTIFIED] [2022-11-23 15:48:29,006 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~n~0#1,QUANTIFIED] [2022-11-23 15:48:29,007 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~n~0#1,QUANTIFIED] [2022-11-23 15:48:29,007 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~n~0#1,QUANTIFIED] [2022-11-23 15:48:29,007 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~n~0#1,QUANTIFIED] [2022-11-23 15:48:29,008 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~n~0#1,QUANTIFIED] [2022-11-23 15:48:29,008 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~n~0#1,QUANTIFIED] Derived loop invariant: (i <= n || n + n * n == 2 * sum) && (forall ULTIMATE.start_main_~n~0#1 : int :: (ULTIMATE.start_main_~n~0#1 + ULTIMATE.start_main_~n~0#1 * ULTIMATE.start_main_~n~0#1 == 2 * sum + 2 * i || i < ULTIMATE.start_main_~n~0#1) || !(i <= ULTIMATE.start_main_~n~0#1)) - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2022-11-23 15:48:29,034 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96175126-4d67-4b01-9c7d-89e42dbc2c83/bin/utaipan-Q6hlc19bkW/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