./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/ps3-ll_valuebound1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e80aa1d-fa3c-4734-b2d6-662588272a35/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e80aa1d-fa3c-4734-b2d6-662588272a35/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e80aa1d-fa3c-4734-b2d6-662588272a35/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e80aa1d-fa3c-4734-b2d6-662588272a35/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/ps3-ll_valuebound1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e80aa1d-fa3c-4734-b2d6-662588272a35/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e80aa1d-fa3c-4734-b2d6-662588272a35/bin/utaipan-7li7fVZpFI --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 72f1855a37efd37cce37062be898d726c14815dc11ea2d177e7b762da78d5470 --- 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-5e519f3 [2022-11-03 02:37:04,146 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 02:37:04,161 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 02:37:04,221 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 02:37:04,222 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 02:37:04,227 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 02:37:04,230 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 02:37:04,235 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 02:37:04,238 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 02:37:04,245 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 02:37:04,247 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 02:37:04,250 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 02:37:04,251 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 02:37:04,254 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 02:37:04,256 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 02:37:04,259 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 02:37:04,261 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 02:37:04,263 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 02:37:04,265 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 02:37:04,276 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 02:37:04,278 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 02:37:04,279 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 02:37:04,283 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 02:37:04,285 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 02:37:04,294 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 02:37:04,295 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 02:37:04,295 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 02:37:04,297 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 02:37:04,298 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 02:37:04,301 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 02:37:04,302 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 02:37:04,303 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 02:37:04,305 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 02:37:04,307 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 02:37:04,309 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 02:37:04,309 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 02:37:04,310 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 02:37:04,310 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 02:37:04,311 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 02:37:04,312 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 02:37:04,313 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 02:37:04,315 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e80aa1d-fa3c-4734-b2d6-662588272a35/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-03 02:37:04,362 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 02:37:04,363 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 02:37:04,364 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 02:37:04,364 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 02:37:04,365 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 02:37:04,366 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 02:37:04,366 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 02:37:04,367 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 02:37:04,367 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 02:37:04,367 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 02:37:04,369 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 02:37:04,369 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 02:37:04,369 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 02:37:04,370 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 02:37:04,370 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 02:37:04,371 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 02:37:04,371 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 02:37:04,371 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 02:37:04,372 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 02:37:04,373 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-03 02:37:04,373 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 02:37:04,373 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-03 02:37:04,374 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 02:37:04,374 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 02:37:04,374 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 02:37:04,375 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 02:37:04,375 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-03 02:37:04,376 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 02:37:04,376 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 02:37:04,376 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 02:37:04,377 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 02:37:04,377 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 02:37:04,377 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:37:04,378 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 02:37:04,378 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 02:37:04,379 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 02:37:04,379 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 02:37:04,379 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 02:37:04,380 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 02:37:04,380 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 02:37:04,380 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 02:37:04,381 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_5e80aa1d-fa3c-4734-b2d6-662588272a35/bin/utaipan-7li7fVZpFI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e80aa1d-fa3c-4734-b2d6-662588272a35/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 72f1855a37efd37cce37062be898d726c14815dc11ea2d177e7b762da78d5470 [2022-11-03 02:37:04,825 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 02:37:04,854 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 02:37:04,857 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 02:37:04,859 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 02:37:04,860 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 02:37:04,862 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e80aa1d-fa3c-4734-b2d6-662588272a35/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/nla-digbench-scaling/ps3-ll_valuebound1.c [2022-11-03 02:37:04,946 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e80aa1d-fa3c-4734-b2d6-662588272a35/bin/utaipan-7li7fVZpFI/data/093736cdb/0e3ced3b24634ec0b234cc9bc4e720c8/FLAGf931a47c8 [2022-11-03 02:37:05,592 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 02:37:05,593 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e80aa1d-fa3c-4734-b2d6-662588272a35/sv-benchmarks/c/nla-digbench-scaling/ps3-ll_valuebound1.c [2022-11-03 02:37:05,611 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e80aa1d-fa3c-4734-b2d6-662588272a35/bin/utaipan-7li7fVZpFI/data/093736cdb/0e3ced3b24634ec0b234cc9bc4e720c8/FLAGf931a47c8 [2022-11-03 02:37:05,942 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e80aa1d-fa3c-4734-b2d6-662588272a35/bin/utaipan-7li7fVZpFI/data/093736cdb/0e3ced3b24634ec0b234cc9bc4e720c8 [2022-11-03 02:37:05,947 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 02:37:05,949 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 02:37:05,955 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 02:37:05,955 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 02:37:05,960 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 02:37:05,961 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:37:05" (1/1) ... [2022-11-03 02:37:05,963 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ed7e5b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:37:05, skipping insertion in model container [2022-11-03 02:37:05,963 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:37:05" (1/1) ... [2022-11-03 02:37:05,973 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 02:37:05,990 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 02:37:06,202 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e80aa1d-fa3c-4734-b2d6-662588272a35/sv-benchmarks/c/nla-digbench-scaling/ps3-ll_valuebound1.c[458,471] [2022-11-03 02:37:06,230 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:37:06,243 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 02:37:06,258 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e80aa1d-fa3c-4734-b2d6-662588272a35/sv-benchmarks/c/nla-digbench-scaling/ps3-ll_valuebound1.c[458,471] [2022-11-03 02:37:06,266 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:37:06,281 INFO L208 MainTranslator]: Completed translation [2022-11-03 02:37:06,281 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:37:06 WrapperNode [2022-11-03 02:37:06,282 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 02:37:06,283 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 02:37:06,283 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 02:37:06,283 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 02:37:06,294 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:37:06" (1/1) ... [2022-11-03 02:37:06,302 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:37:06" (1/1) ... [2022-11-03 02:37:06,328 INFO L138 Inliner]: procedures = 14, calls = 10, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 37 [2022-11-03 02:37:06,329 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 02:37:06,330 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 02:37:06,330 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 02:37:06,334 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 02:37:06,346 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:37:06" (1/1) ... [2022-11-03 02:37:06,347 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:37:06" (1/1) ... [2022-11-03 02:37:06,366 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:37:06" (1/1) ... [2022-11-03 02:37:06,367 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:37:06" (1/1) ... [2022-11-03 02:37:06,370 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:37:06" (1/1) ... [2022-11-03 02:37:06,375 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:37:06" (1/1) ... [2022-11-03 02:37:06,376 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:37:06" (1/1) ... [2022-11-03 02:37:06,377 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:37:06" (1/1) ... [2022-11-03 02:37:06,385 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 02:37:06,386 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 02:37:06,386 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 02:37:06,386 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 02:37:06,388 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:37:06" (1/1) ... [2022-11-03 02:37:06,396 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:37:06,409 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e80aa1d-fa3c-4734-b2d6-662588272a35/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:37:06,423 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e80aa1d-fa3c-4734-b2d6-662588272a35/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 02:37:06,440 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e80aa1d-fa3c-4734-b2d6-662588272a35/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 02:37:06,470 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 02:37:06,470 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 02:37:06,470 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 02:37:06,470 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 02:37:06,471 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-03 02:37:06,471 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-03 02:37:06,551 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 02:37:06,554 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 02:37:06,708 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 02:37:06,750 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 02:37:06,750 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-03 02:37:06,754 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:37:06 BoogieIcfgContainer [2022-11-03 02:37:06,754 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 02:37:06,757 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 02:37:06,757 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 02:37:06,762 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 02:37:06,763 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 02:37:05" (1/3) ... [2022-11-03 02:37:06,764 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ef47c94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:37:06, skipping insertion in model container [2022-11-03 02:37:06,764 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:37:06" (2/3) ... [2022-11-03 02:37:06,765 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ef47c94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:37:06, skipping insertion in model container [2022-11-03 02:37:06,765 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:37:06" (3/3) ... [2022-11-03 02:37:06,767 INFO L112 eAbstractionObserver]: Analyzing ICFG ps3-ll_valuebound1.c [2022-11-03 02:37:06,792 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 02:37:06,792 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 02:37:06,857 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 02:37:06,866 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;@7972bac3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 02:37:06,867 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 02:37:06,872 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 8 states have (on average 1.5) internal successors, (12), 9 states have internal predecessors, (12), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 02:37:06,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-03 02:37:06,882 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:37:06,883 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-03 02:37:06,884 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:37:06,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:37:06,892 INFO L85 PathProgramCache]: Analyzing trace with hash -1843522412, now seen corresponding path program 1 times [2022-11-03 02:37:06,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:37:06,905 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084526706] [2022-11-03 02:37:06,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:37:06,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:37:07,025 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-03 02:37:07,026 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1883505400] [2022-11-03 02:37:07,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:37:07,027 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:37:07,027 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e80aa1d-fa3c-4734-b2d6-662588272a35/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:37:07,032 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e80aa1d-fa3c-4734-b2d6-662588272a35/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:37:07,044 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e80aa1d-fa3c-4734-b2d6-662588272a35/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-03 02:37:07,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:37:07,132 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-03 02:37:07,139 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:37:07,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:37:07,388 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:37:07,388 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:37:07,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084526706] [2022-11-03 02:37:07,389 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-03 02:37:07,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1883505400] [2022-11-03 02:37:07,390 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1883505400] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:37:07,391 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:37:07,391 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:37:07,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805975718] [2022-11-03 02:37:07,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:37:07,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:37:07,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:37:07,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:37:07,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:37:07,448 INFO L87 Difference]: Start difference. First operand has 13 states, 8 states have (on average 1.5) internal successors, (12), 9 states have internal predecessors, (12), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) 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) [2022-11-03 02:37:07,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:37:07,630 INFO L93 Difference]: Finished difference Result 35 states and 48 transitions. [2022-11-03 02:37:07,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 02:37:07,633 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 [2022-11-03 02:37:07,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:37:07,657 INFO L225 Difference]: With dead ends: 35 [2022-11-03 02:37:07,657 INFO L226 Difference]: Without dead ends: 18 [2022-11-03 02:37:07,661 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 [2022-11-03 02:37:07,666 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 7 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:37:07,667 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 30 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:37:07,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2022-11-03 02:37:07,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2022-11-03 02:37:07,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 13 states have internal predecessors, (14), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 02:37:07,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2022-11-03 02:37:07,732 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 6 [2022-11-03 02:37:07,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:37:07,733 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2022-11-03 02:37:07,734 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) [2022-11-03 02:37:07,734 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2022-11-03 02:37:07,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-03 02:37:07,735 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:37:07,736 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:37:07,782 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e80aa1d-fa3c-4734-b2d6-662588272a35/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-03 02:37:07,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e80aa1d-fa3c-4734-b2d6-662588272a35/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-11-03 02:37:07,963 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:37:07,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:37:07,964 INFO L85 PathProgramCache]: Analyzing trace with hash 2030848362, now seen corresponding path program 1 times [2022-11-03 02:37:07,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:37:07,965 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899762543] [2022-11-03 02:37:07,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:37:07,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:37:07,998 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-03 02:37:07,998 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1981369930] [2022-11-03 02:37:07,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:37:08,003 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:37:08,004 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e80aa1d-fa3c-4734-b2d6-662588272a35/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:37:08,005 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e80aa1d-fa3c-4734-b2d6-662588272a35/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:37:08,033 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e80aa1d-fa3c-4734-b2d6-662588272a35/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-03 02:37:08,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:37:08,116 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-03 02:37:08,119 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:37:08,303 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:37:08,304 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:37:08,419 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-03 02:37:08,419 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:37:08,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899762543] [2022-11-03 02:37:08,420 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-03 02:37:08,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1981369930] [2022-11-03 02:37:08,421 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1981369930] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-03 02:37:08,421 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 02:37:08,422 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 7 [2022-11-03 02:37:08,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210652181] [2022-11-03 02:37:08,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:37:08,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:37:08,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:37:08,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:37:08,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-03 02:37:08,426 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 02:37:08,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:37:08,494 INFO L93 Difference]: Finished difference Result 18 states and 19 transitions. [2022-11-03 02:37:08,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 02:37:08,495 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2022-11-03 02:37:08,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:37:08,497 INFO L225 Difference]: With dead ends: 18 [2022-11-03 02:37:08,497 INFO L226 Difference]: Without dead ends: 0 [2022-11-03 02:37:08,499 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:37:08,504 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 6 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 02:37:08,505 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 10 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 02:37:08,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-03 02:37:08,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-03 02:37:08,509 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) [2022-11-03 02:37:08,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-03 02:37:08,510 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2022-11-03 02:37:08,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:37:08,511 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-03 02:37:08,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 02:37:08,511 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-03 02:37:08,511 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-03 02:37:08,519 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-03 02:37:08,570 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e80aa1d-fa3c-4734-b2d6-662588272a35/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-03 02:37:08,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e80aa1d-fa3c-4734-b2d6-662588272a35/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2022-11-03 02:37:08,737 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-03 02:37:08,787 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-03 02:37:08,788 INFO L895 garLoopResultBuilder]: At program point L27-2(lines 27 36) the Hoare annotation is: (= (* 6 |ULTIMATE.start_main_~x~0#1|) (+ (* 3 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|)) (* (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|) 2) |ULTIMATE.start_main_~y~0#1|)) [2022-11-03 02:37:08,789 INFO L895 garLoopResultBuilder]: At program point L27-3(lines 27 36) the Hoare annotation is: (= (* 6 |ULTIMATE.start_main_~x~0#1|) (+ (* 3 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|)) (* (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|) 2) |ULTIMATE.start_main_~y~0#1|)) [2022-11-03 02:37:08,789 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-11-03 02:37:08,789 INFO L895 garLoopResultBuilder]: At program point L28(line 28) the Hoare annotation is: (= (* 6 |ULTIMATE.start_main_~x~0#1|) (+ (* 3 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|)) (* (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|) 2) |ULTIMATE.start_main_~y~0#1|)) [2022-11-03 02:37:08,790 INFO L899 garLoopResultBuilder]: For program point L28-1(lines 27 36) no Hoare annotation was computed. [2022-11-03 02:37:08,790 INFO L902 garLoopResultBuilder]: At program point L37(line 37) the Hoare annotation is: true [2022-11-03 02:37:08,790 INFO L902 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 9 15) the Hoare annotation is: true [2022-11-03 02:37:08,791 INFO L899 garLoopResultBuilder]: For program point L11(lines 11 12) no Hoare annotation was computed. [2022-11-03 02:37:08,791 INFO L899 garLoopResultBuilder]: For program point L10(lines 10 13) no Hoare annotation was computed. [2022-11-03 02:37:08,791 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 9 15) no Hoare annotation was computed. [2022-11-03 02:37:08,791 INFO L899 garLoopResultBuilder]: For program point L10-2(lines 9 15) no Hoare annotation was computed. [2022-11-03 02:37:08,792 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2022-11-03 02:37:08,796 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1] [2022-11-03 02:37:08,802 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-03 02:37:08,823 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.11 02:37:08 BoogieIcfgContainer [2022-11-03 02:37:08,823 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-03 02:37:08,824 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-03 02:37:08,824 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-03 02:37:08,824 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-03 02:37:08,825 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:37:06" (3/4) ... [2022-11-03 02:37:08,829 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-03 02:37:08,836 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2022-11-03 02:37:08,841 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2022-11-03 02:37:08,841 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2022-11-03 02:37:08,842 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-11-03 02:37:08,842 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-03 02:37:08,892 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e80aa1d-fa3c-4734-b2d6-662588272a35/bin/utaipan-7li7fVZpFI/witness.graphml [2022-11-03 02:37:08,898 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-03 02:37:08,899 INFO L158 Benchmark]: Toolchain (without parser) took 2950.56ms. Allocated memory was 102.8MB in the beginning and 123.7MB in the end (delta: 21.0MB). Free memory was 62.6MB in the beginning and 73.2MB in the end (delta: -10.6MB). Peak memory consumption was 9.9MB. Max. memory is 16.1GB. [2022-11-03 02:37:08,900 INFO L158 Benchmark]: CDTParser took 0.38ms. Allocated memory is still 102.8MB. Free memory is still 78.7MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 02:37:08,900 INFO L158 Benchmark]: CACSL2BoogieTranslator took 327.35ms. Allocated memory is still 102.8MB. Free memory was 62.4MB in the beginning and 77.4MB in the end (delta: -15.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-03 02:37:08,901 INFO L158 Benchmark]: Boogie Procedure Inliner took 46.33ms. Allocated memory is still 102.8MB. Free memory was 77.4MB in the beginning and 75.9MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-03 02:37:08,902 INFO L158 Benchmark]: Boogie Preprocessor took 55.24ms. Allocated memory is still 102.8MB. Free memory was 75.9MB in the beginning and 75.0MB in the end (delta: 895.2kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 02:37:08,902 INFO L158 Benchmark]: RCFGBuilder took 368.29ms. Allocated memory is still 102.8MB. Free memory was 74.9MB in the beginning and 63.5MB in the end (delta: 11.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-03 02:37:08,903 INFO L158 Benchmark]: TraceAbstraction took 2066.05ms. Allocated memory was 102.8MB in the beginning and 123.7MB in the end (delta: 21.0MB). Free memory was 63.0MB in the beginning and 75.7MB in the end (delta: -12.8MB). Peak memory consumption was 10.1MB. Max. memory is 16.1GB. [2022-11-03 02:37:08,904 INFO L158 Benchmark]: Witness Printer took 74.34ms. Allocated memory is still 123.7MB. Free memory was 75.7MB in the beginning and 73.2MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-03 02:37:08,908 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.38ms. Allocated memory is still 102.8MB. Free memory is still 78.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 327.35ms. Allocated memory is still 102.8MB. Free memory was 62.4MB in the beginning and 77.4MB in the end (delta: -15.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 46.33ms. Allocated memory is still 102.8MB. Free memory was 77.4MB in the beginning and 75.9MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 55.24ms. Allocated memory is still 102.8MB. Free memory was 75.9MB in the beginning and 75.0MB in the end (delta: 895.2kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 368.29ms. Allocated memory is still 102.8MB. Free memory was 74.9MB in the beginning and 63.5MB in the end (delta: 11.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 2066.05ms. Allocated memory was 102.8MB in the beginning and 123.7MB in the end (delta: 21.0MB). Free memory was 63.0MB in the beginning and 75.7MB in the end (delta: -12.8MB). Peak memory consumption was 10.1MB. Max. memory is 16.1GB. * Witness Printer took 74.34ms. Allocated memory is still 123.7MB. Free memory was 75.7MB in the beginning and 73.2MB in the end (delta: 2.5MB). 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, 13 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2.0s, OverallIterations: 2, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 15 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 13 mSDsluCounter, 40 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 33 mSDsCounter, 4 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 48 IncrementalHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4 mSolverCounterUnsat, 14 mSDtfsCounter, 48 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 31 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred 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, 5 LocationsWithAnnotation, 10 PreInvPairs, 18 NumberOfFragments, 53 HoareAnnotationTreeSize, 10 FomulaSimplifications, 50 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 8 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 19 NumberOfCodeBlocks, 19 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 29 ConstructedInterpolants, 0 QuantifiedInterpolants, 167 SizeOfPredicates, 2 NumberOfNonLiveVariables, 113 ConjunctsInSsa, 18 ConjunctsInUnsatCore, 3 InterpolantComputations, 2 PerfectInterpolantSequences, 6/8 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: 27]: Loop Invariant Derived loop invariant: 6 * x == 3 * (y * y) + y * y * y * 2 + y - InvariantResult [Line: 37]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2022-11-03 02:37:08,988 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e80aa1d-fa3c-4734-b2d6-662588272a35/bin/utaipan-7li7fVZpFI/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