./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/verifythis/elimination_max.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 30e01a73 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_616e21fb-79dc-411a-bcbb-d6aa1ee3da5f/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_616e21fb-79dc-411a-bcbb-d6aa1ee3da5f/bin/utaipan-verify-mE87zJ7Ire/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_616e21fb-79dc-411a-bcbb-d6aa1ee3da5f/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_616e21fb-79dc-411a-bcbb-d6aa1ee3da5f/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.xml -i ../../sv-benchmarks/c/verifythis/elimination_max.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_616e21fb-79dc-411a-bcbb-d6aa1ee3da5f/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_616e21fb-79dc-411a-bcbb-d6aa1ee3da5f/bin/utaipan-verify-mE87zJ7Ire --witnessprinter.witness.filename witness --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 0bc7b1b837bfd7794f122f6504da8d835bb2276ae4afe0cc0d058d385032d49e --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:27:55,075 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:27:55,242 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_616e21fb-79dc-411a-bcbb-d6aa1ee3da5f/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-23 21:27:55,253 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:27:55,254 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:27:55,308 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:27:55,309 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:27:55,310 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:27:55,312 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:27:55,319 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:27:55,320 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 21:27:55,322 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 21:27:55,322 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 21:27:55,325 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 21:27:55,326 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 21:27:55,326 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 21:27:55,327 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 21:27:55,328 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 21:27:55,329 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 21:27:55,329 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 21:27:55,330 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 21:27:55,331 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 21:27:55,333 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:27:55,333 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 21:27:55,334 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 21:27:55,335 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 21:27:55,336 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 21:27:55,336 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:27:55,337 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 21:27:55,338 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:27:55,340 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 21:27:55,340 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 21:27:55,341 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 21:27:55,341 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:27:55,342 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:27:55,342 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:27:55,343 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:27:55,343 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:27:55,344 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:27:55,344 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:27:55,345 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 21:27:55,346 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 21:27:55,346 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 21:27:55,347 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:27:55,348 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 21:27:55,348 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 21:27:55,349 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:27:55,349 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_616e21fb-79dc-411a-bcbb-d6aa1ee3da5f/bin/utaipan-verify-mE87zJ7Ire/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_616e21fb-79dc-411a-bcbb-d6aa1ee3da5f/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0bc7b1b837bfd7794f122f6504da8d835bb2276ae4afe0cc0d058d385032d49e [2023-11-23 21:27:55,866 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:27:55,912 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:27:55,916 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:27:55,919 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:27:55,920 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:27:55,922 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_616e21fb-79dc-411a-bcbb-d6aa1ee3da5f/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/verifythis/elimination_max.c [2023-11-23 21:27:59,705 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:27:59,948 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:27:59,949 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_616e21fb-79dc-411a-bcbb-d6aa1ee3da5f/sv-benchmarks/c/verifythis/elimination_max.c [2023-11-23 21:27:59,958 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_616e21fb-79dc-411a-bcbb-d6aa1ee3da5f/bin/utaipan-verify-mE87zJ7Ire/data/ea5cecdd7/8d09a110558c4f98bd9949fc873d905a/FLAGe26f9d595 [2023-11-23 21:27:59,980 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_616e21fb-79dc-411a-bcbb-d6aa1ee3da5f/bin/utaipan-verify-mE87zJ7Ire/data/ea5cecdd7/8d09a110558c4f98bd9949fc873d905a [2023-11-23 21:27:59,987 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:27:59,990 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:27:59,994 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:27:59,994 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:28:00,001 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:28:00,002 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:27:59" (1/1) ... [2023-11-23 21:28:00,003 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b583936 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:28:00, skipping insertion in model container [2023-11-23 21:28:00,003 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:27:59" (1/1) ... [2023-11-23 21:28:00,033 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:28:00,210 WARN L240 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_616e21fb-79dc-411a-bcbb-d6aa1ee3da5f/sv-benchmarks/c/verifythis/elimination_max.c[485,498] [2023-11-23 21:28:00,237 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:28:00,251 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:28:00,265 WARN L240 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_616e21fb-79dc-411a-bcbb-d6aa1ee3da5f/sv-benchmarks/c/verifythis/elimination_max.c[485,498] [2023-11-23 21:28:00,285 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:28:00,303 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:28:00,304 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:28:00 WrapperNode [2023-11-23 21:28:00,304 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:28:00,306 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:28:00,306 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:28:00,306 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:28:00,326 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:28:00" (1/1) ... [2023-11-23 21:28:00,334 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:28:00" (1/1) ... [2023-11-23 21:28:00,361 INFO L138 Inliner]: procedures = 18, calls = 20, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 64 [2023-11-23 21:28:00,361 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:28:00,362 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:28:00,362 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:28:00,363 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:28:00,374 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:28:00" (1/1) ... [2023-11-23 21:28:00,375 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:28:00" (1/1) ... [2023-11-23 21:28:00,381 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:28:00" (1/1) ... [2023-11-23 21:28:00,381 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:28:00" (1/1) ... [2023-11-23 21:28:00,387 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:28:00" (1/1) ... [2023-11-23 21:28:00,392 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:28:00" (1/1) ... [2023-11-23 21:28:00,393 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:28:00" (1/1) ... [2023-11-23 21:28:00,395 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:28:00" (1/1) ... [2023-11-23 21:28:00,398 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:28:00,399 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:28:00,399 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:28:00,399 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:28:00,400 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:28:00" (1/1) ... [2023-11-23 21:28:00,408 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:28:00,423 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_616e21fb-79dc-411a-bcbb-d6aa1ee3da5f/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:28:00,437 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_616e21fb-79dc-411a-bcbb-d6aa1ee3da5f/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:28:00,442 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_616e21fb-79dc-411a-bcbb-d6aa1ee3da5f/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:28:00,488 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:28:00,488 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 21:28:00,490 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 21:28:00,490 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 21:28:00,492 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-23 21:28:00,493 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:28:00,494 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:28:00,494 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-23 21:28:00,494 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-23 21:28:00,494 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-23 21:28:00,495 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 21:28:00,626 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:28:00,630 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:28:00,919 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:28:01,008 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:28:01,008 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-23 21:28:01,010 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:28:01 BoogieIcfgContainer [2023-11-23 21:28:01,011 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:28:01,023 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:28:01,023 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:28:01,028 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:28:01,029 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:27:59" (1/3) ... [2023-11-23 21:28:01,030 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4448a831 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:28:01, skipping insertion in model container [2023-11-23 21:28:01,030 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:28:00" (2/3) ... [2023-11-23 21:28:01,031 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4448a831 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:28:01, skipping insertion in model container [2023-11-23 21:28:01,031 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:28:01" (3/3) ... [2023-11-23 21:28:01,040 INFO L112 eAbstractionObserver]: Analyzing ICFG elimination_max.c [2023-11-23 21:28:01,063 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:28:01,063 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 21:28:01,124 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:28:01,136 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=LoopHeads, 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;@2985ce29, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:28:01,137 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 21:28:01,143 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 13 states have internal predecessors, (16), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-23 21:28:01,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-23 21:28:01,157 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:28:01,160 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:28:01,161 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:28:01,171 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:28:01,172 INFO L85 PathProgramCache]: Analyzing trace with hash 1655753830, now seen corresponding path program 1 times [2023-11-23 21:28:01,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:28:01,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107576746] [2023-11-23 21:28:01,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:28:01,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:28:01,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:28:02,135 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-23 21:28:02,136 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:28:02,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107576746] [2023-11-23 21:28:02,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1107576746] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:28:02,138 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:28:02,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-23 21:28:02,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848836770] [2023-11-23 21:28:02,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:28:02,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-23 21:28:02,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:28:02,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-23 21:28:02,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-23 21:28:02,216 INFO L87 Difference]: Start difference. First operand has 20 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 13 states have internal predecessors, (16), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-23 21:28:02,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:28:02,438 INFO L93 Difference]: Finished difference Result 35 states and 42 transitions. [2023-11-23 21:28:02,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-23 21:28:02,442 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 14 [2023-11-23 21:28:02,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:28:02,452 INFO L225 Difference]: With dead ends: 35 [2023-11-23 21:28:02,452 INFO L226 Difference]: Without dead ends: 23 [2023-11-23 21:28:02,457 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-23 21:28:02,465 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 12 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:28:02,468 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 50 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 21:28:02,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2023-11-23 21:28:02,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2023-11-23 21:28:02,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 15 states have internal predecessors, (17), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-23 21:28:02,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2023-11-23 21:28:02,541 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 14 [2023-11-23 21:28:02,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:28:02,544 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2023-11-23 21:28:02,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-23 21:28:02,547 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2023-11-23 21:28:02,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-11-23 21:28:02,550 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:28:02,550 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:28:02,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 21:28:02,551 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:28:02,552 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:28:02,552 INFO L85 PathProgramCache]: Analyzing trace with hash 2007619514, now seen corresponding path program 1 times [2023-11-23 21:28:02,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:28:02,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783525828] [2023-11-23 21:28:02,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:28:02,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:28:02,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:28:03,033 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-23 21:28:03,033 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:28:03,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783525828] [2023-11-23 21:28:03,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1783525828] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:28:03,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:28:03,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-23 21:28:03,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275099965] [2023-11-23 21:28:03,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:28:03,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-23 21:28:03,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:28:03,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-23 21:28:03,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-23 21:28:03,050 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-23 21:28:03,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:28:03,193 INFO L93 Difference]: Finished difference Result 23 states and 25 transitions. [2023-11-23 21:28:03,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-23 21:28:03,194 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 21 [2023-11-23 21:28:03,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:28:03,195 INFO L225 Difference]: With dead ends: 23 [2023-11-23 21:28:03,195 INFO L226 Difference]: Without dead ends: 0 [2023-11-23 21:28:03,196 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-23 21:28:03,199 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 8 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:28:03,201 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 52 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 21:28:03,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-23 21:28:03,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-23 21:28:03,208 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) [2023-11-23 21:28:03,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-23 21:28:03,208 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2023-11-23 21:28:03,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:28:03,210 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-23 21:28:03,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 6 states have internal predecessors, (13), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-23 21:28:03,210 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-23 21:28:03,211 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-23 21:28:03,215 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-23 21:28:03,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-23 21:28:03,218 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-11-23 21:28:03,258 INFO L895 garLoopResultBuilder]: At program point L35-2(lines 25 37) the Hoare annotation is: (= ((as const (Array Int Int)) 0) (select |#memory_int| |ULTIMATE.start_main_~a~0#1.base|)) [2023-11-23 21:28:03,258 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-11-23 21:28:03,259 INFO L902 garLoopResultBuilder]: At program point L19(line 19) the Hoare annotation is: true [2023-11-23 21:28:03,259 INFO L899 garLoopResultBuilder]: For program point L19-1(line 19) no Hoare annotation was computed. [2023-11-23 21:28:03,260 INFO L895 garLoopResultBuilder]: At program point L46(line 46) the Hoare annotation is: (and (= ((as const (Array Int Int)) 0) (select |#memory_int| |ULTIMATE.start_main_~a~0#1.base|)) (= |ULTIMATE.start_main_#t~mem16#1| 0) (= |ULTIMATE.start_main_#t~mem15#1| 0)) [2023-11-23 21:28:03,260 INFO L899 garLoopResultBuilder]: For program point L46-1(line 46) no Hoare annotation was computed. [2023-11-23 21:28:03,261 INFO L895 garLoopResultBuilder]: At program point L42(line 42) the Hoare annotation is: (= ((as const (Array Int Int)) 0) (select |#memory_int| |ULTIMATE.start_main_~a~0#1.base|)) [2023-11-23 21:28:03,261 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-11-23 21:28:03,262 INFO L899 garLoopResultBuilder]: For program point L42-1(line 42) no Hoare annotation was computed. [2023-11-23 21:28:03,262 INFO L895 garLoopResultBuilder]: At program point L43(line 43) the Hoare annotation is: (and (= ((as const (Array Int Int)) 0) (select |#memory_int| |ULTIMATE.start_main_~a~0#1.base|)) (<= |ULTIMATE.start_main_#t~mem12#1| |ULTIMATE.start_main_#t~mem13#1|)) [2023-11-23 21:28:03,262 INFO L899 garLoopResultBuilder]: For program point L43-1(line 43) no Hoare annotation was computed. [2023-11-23 21:28:03,262 INFO L895 garLoopResultBuilder]: At program point L45-3(lines 45 47) the Hoare annotation is: (= ((as const (Array Int Int)) 0) (select |#memory_int| |ULTIMATE.start_main_~a~0#1.base|)) [2023-11-23 21:28:03,265 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 7 9) the Hoare annotation is: true [2023-11-23 21:28:03,266 INFO L899 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 7 9) no Hoare annotation was computed. [2023-11-23 21:28:03,266 INFO L899 garLoopResultBuilder]: For program point L11(line 11) no Hoare annotation was computed. [2023-11-23 21:28:03,266 INFO L899 garLoopResultBuilder]: For program point L11-1(line 11) no Hoare annotation was computed. [2023-11-23 21:28:03,266 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 10 12) no Hoare annotation was computed. [2023-11-23 21:28:03,269 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 10 12) the Hoare annotation is: true [2023-11-23 21:28:03,270 INFO L899 garLoopResultBuilder]: For program point L11-3(lines 10 12) no Hoare annotation was computed. [2023-11-23 21:28:03,271 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 11) no Hoare annotation was computed. [2023-11-23 21:28:03,276 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-11-23 21:28:03,282 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-23 21:28:03,294 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.IllegalArgumentException: unknown symbol (const Int (Array Int Int)) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:264) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:173) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:137) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.RCFGBacktranslator.translateExpression(RCFGBacktranslator.java:401) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.RCFGBacktranslator.translateExpression(RCFGBacktranslator.java:1) at de.uni_freiburg.informatik.ultimate.core.lib.translation.DefaultTranslator.translateExpressionWithContext(DefaultTranslator.java:165) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateExpressionWithContext(ModelTranslationContainer.java:101) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateExpressionWithContextToString(ModelTranslationContainer.java:91) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.BacktranslationService.translateExpressionWithContextToString(BacktranslationService.java:98) at de.uni_freiburg.informatik.ultimate.core.lib.results.InvariantResult.(InvariantResult.java:47) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.createInvariantResults(TraceAbstractionStarter.java:454) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:191) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2023-11-23 21:28:03,297 INFO L158 Benchmark]: Toolchain (without parser) took 3307.57ms. Allocated memory was 138.4MB in the beginning and 216.0MB in the end (delta: 77.6MB). Free memory was 73.4MB in the beginning and 115.1MB in the end (delta: -41.7MB). Peak memory consumption was 36.5MB. Max. memory is 16.1GB. [2023-11-23 21:28:03,304 INFO L158 Benchmark]: CDTParser took 0.45ms. Allocated memory is still 138.4MB. Free memory is still 109.8MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 21:28:03,304 INFO L158 Benchmark]: CACSL2BoogieTranslator took 310.71ms. Allocated memory was 138.4MB in the beginning and 216.0MB in the end (delta: 77.6MB). Free memory was 73.2MB in the beginning and 181.0MB in the end (delta: -107.8MB). Peak memory consumption was 11.6MB. Max. memory is 16.1GB. [2023-11-23 21:28:03,306 INFO L158 Benchmark]: Boogie Procedure Inliner took 55.90ms. Allocated memory is still 216.0MB. Free memory was 181.0MB in the beginning and 185.0MB in the end (delta: -4.1MB). Peak memory consumption was 4.4MB. Max. memory is 16.1GB. [2023-11-23 21:28:03,306 INFO L158 Benchmark]: Boogie Preprocessor took 35.75ms. Allocated memory is still 216.0MB. Free memory was 185.0MB in the beginning and 184.0MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 21:28:03,307 INFO L158 Benchmark]: RCFGBuilder took 612.36ms. Allocated memory is still 216.0MB. Free memory was 184.0MB in the beginning and 168.4MB in the end (delta: 15.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-23 21:28:03,308 INFO L158 Benchmark]: TraceAbstraction took 2273.38ms. Allocated memory is still 216.0MB. Free memory was 167.2MB in the beginning and 115.1MB in the end (delta: 52.1MB). Peak memory consumption was 49.9MB. Max. memory is 16.1GB. [2023-11-23 21:28:03,315 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.45ms. Allocated memory is still 138.4MB. Free memory is still 109.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 310.71ms. Allocated memory was 138.4MB in the beginning and 216.0MB in the end (delta: 77.6MB). Free memory was 73.2MB in the beginning and 181.0MB in the end (delta: -107.8MB). Peak memory consumption was 11.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 55.90ms. Allocated memory is still 216.0MB. Free memory was 181.0MB in the beginning and 185.0MB in the end (delta: -4.1MB). Peak memory consumption was 4.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 35.75ms. Allocated memory is still 216.0MB. Free memory was 185.0MB in the beginning and 184.0MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 612.36ms. Allocated memory is still 216.0MB. Free memory was 184.0MB in the beginning and 168.4MB in the end (delta: 15.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 2273.38ms. Allocated memory is still 216.0MB. Free memory was 167.2MB in the beginning and 115.1MB in the end (delta: 52.1MB). Peak memory consumption was 49.9MB. 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: 11]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 20 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2.2s, OverallIterations: 2, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 22 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 20 mSDsluCounter, 102 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 79 mSDsCounter, 6 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 118 IncrementalHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6 mSolverCounterUnsat, 23 mSDtfsCounter, 118 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred in iteration=1, InterpolantAutomatonStates: 14, 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, 8 LocationsWithAnnotation, 11 PreInvPairs, 13 NumberOfFragments, 44 HoareAnnotationTreeSize, 11 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 35 NumberOfCodeBlocks, 35 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 33 ConstructedInterpolants, 0 QuantifiedInterpolants, 151 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 6/6 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 - ExceptionOrErrorResult: IllegalArgumentException: unknown symbol (const Int (Array Int Int)) de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: IllegalArgumentException: unknown symbol (const Int (Array Int Int)): de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:264) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2023-11-23 21:28:03,366 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_616e21fb-79dc-411a-bcbb-d6aa1ee3da5f/bin/utaipan-verify-mE87zJ7Ire/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 Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### 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_616e21fb-79dc-411a-bcbb-d6aa1ee3da5f/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_616e21fb-79dc-411a-bcbb-d6aa1ee3da5f/bin/utaipan-verify-mE87zJ7Ire/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_616e21fb-79dc-411a-bcbb-d6aa1ee3da5f/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_616e21fb-79dc-411a-bcbb-d6aa1ee3da5f/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.xml -i ../../sv-benchmarks/c/verifythis/elimination_max.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_616e21fb-79dc-411a-bcbb-d6aa1ee3da5f/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_616e21fb-79dc-411a-bcbb-d6aa1ee3da5f/bin/utaipan-verify-mE87zJ7Ire --witnessprinter.witness.filename witness --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 0bc7b1b837bfd7794f122f6504da8d835bb2276ae4afe0cc0d058d385032d49e --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:28:06,030 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:28:06,105 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_616e21fb-79dc-411a-bcbb-d6aa1ee3da5f/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2023-11-23 21:28:06,111 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:28:06,111 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:28:06,140 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:28:06,141 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:28:06,141 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:28:06,142 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:28:06,143 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:28:06,143 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 21:28:06,144 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 21:28:06,144 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 21:28:06,145 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 21:28:06,145 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 21:28:06,146 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 21:28:06,147 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:28:06,147 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 21:28:06,148 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 21:28:06,148 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 21:28:06,149 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:28:06,149 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 21:28:06,150 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:28:06,150 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 21:28:06,150 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-23 21:28:06,151 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-23 21:28:06,151 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-23 21:28:06,151 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 21:28:06,152 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 21:28:06,152 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:28:06,153 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:28:06,153 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 21:28:06,153 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:28:06,154 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:28:06,154 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:28:06,154 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:28:06,154 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:28:06,155 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 21:28:06,155 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-23 21:28:06,155 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-23 21:28:06,155 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:28:06,156 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 21:28:06,156 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 21:28:06,156 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:28:06,156 INFO L153 SettingsManager]: * Logic for external solver=AUFBV 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_616e21fb-79dc-411a-bcbb-d6aa1ee3da5f/bin/utaipan-verify-mE87zJ7Ire/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_616e21fb-79dc-411a-bcbb-d6aa1ee3da5f/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0bc7b1b837bfd7794f122f6504da8d835bb2276ae4afe0cc0d058d385032d49e [2023-11-23 21:28:06,552 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:28:06,575 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:28:06,578 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:28:06,579 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:28:06,580 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:28:06,581 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_616e21fb-79dc-411a-bcbb-d6aa1ee3da5f/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/verifythis/elimination_max.c [2023-11-23 21:28:09,780 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:28:10,055 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:28:10,057 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_616e21fb-79dc-411a-bcbb-d6aa1ee3da5f/sv-benchmarks/c/verifythis/elimination_max.c [2023-11-23 21:28:10,065 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_616e21fb-79dc-411a-bcbb-d6aa1ee3da5f/bin/utaipan-verify-mE87zJ7Ire/data/b043f6735/ef0962746e6249eb84a861b72f94e96c/FLAG1fc5736a4 [2023-11-23 21:28:10,079 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_616e21fb-79dc-411a-bcbb-d6aa1ee3da5f/bin/utaipan-verify-mE87zJ7Ire/data/b043f6735/ef0962746e6249eb84a861b72f94e96c [2023-11-23 21:28:10,082 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:28:10,084 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:28:10,085 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:28:10,085 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:28:10,091 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:28:10,092 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:28:10" (1/1) ... [2023-11-23 21:28:10,093 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f1a6047 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:28:10, skipping insertion in model container [2023-11-23 21:28:10,093 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:28:10" (1/1) ... [2023-11-23 21:28:10,115 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:28:10,274 WARN L240 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_616e21fb-79dc-411a-bcbb-d6aa1ee3da5f/sv-benchmarks/c/verifythis/elimination_max.c[485,498] [2023-11-23 21:28:10,294 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:28:10,310 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:28:10,324 WARN L240 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_616e21fb-79dc-411a-bcbb-d6aa1ee3da5f/sv-benchmarks/c/verifythis/elimination_max.c[485,498] [2023-11-23 21:28:10,350 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:28:10,371 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:28:10,371 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:28:10 WrapperNode [2023-11-23 21:28:10,371 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:28:10,373 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:28:10,373 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:28:10,373 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:28:10,381 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:28:10" (1/1) ... [2023-11-23 21:28:10,403 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:28:10" (1/1) ... [2023-11-23 21:28:10,435 INFO L138 Inliner]: procedures = 20, calls = 20, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 62 [2023-11-23 21:28:10,435 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:28:10,437 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:28:10,437 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:28:10,437 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:28:10,447 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:28:10" (1/1) ... [2023-11-23 21:28:10,448 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:28:10" (1/1) ... [2023-11-23 21:28:10,458 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:28:10" (1/1) ... [2023-11-23 21:28:10,458 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:28:10" (1/1) ... [2023-11-23 21:28:10,480 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:28:10" (1/1) ... [2023-11-23 21:28:10,484 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:28:10" (1/1) ... [2023-11-23 21:28:10,486 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:28:10" (1/1) ... [2023-11-23 21:28:10,488 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:28:10" (1/1) ... [2023-11-23 21:28:10,499 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:28:10,500 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:28:10,501 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:28:10,501 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:28:10,502 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:28:10" (1/1) ... [2023-11-23 21:28:10,510 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:28:10,531 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_616e21fb-79dc-411a-bcbb-d6aa1ee3da5f/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:28:10,545 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_616e21fb-79dc-411a-bcbb-d6aa1ee3da5f/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:28:10,583 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_616e21fb-79dc-411a-bcbb-d6aa1ee3da5f/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:28:10,594 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:28:10,594 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-23 21:28:10,594 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 21:28:10,594 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 21:28:10,595 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-23 21:28:10,595 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-11-23 21:28:10,595 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:28:10,597 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:28:10,597 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-23 21:28:10,598 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-23 21:28:10,598 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 21:28:10,685 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:28:10,688 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:28:10,917 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:28:10,992 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:28:10,993 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-23 21:28:10,993 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:28:10 BoogieIcfgContainer [2023-11-23 21:28:10,994 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:28:10,996 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:28:10,997 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:28:11,001 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:28:11,001 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:28:10" (1/3) ... [2023-11-23 21:28:11,002 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79c8ac14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:28:11, skipping insertion in model container [2023-11-23 21:28:11,002 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:28:10" (2/3) ... [2023-11-23 21:28:11,003 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79c8ac14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:28:11, skipping insertion in model container [2023-11-23 21:28:11,004 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:28:10" (3/3) ... [2023-11-23 21:28:11,005 INFO L112 eAbstractionObserver]: Analyzing ICFG elimination_max.c [2023-11-23 21:28:11,025 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:28:11,026 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 21:28:11,089 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:28:11,100 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=LoopHeads, 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;@3ffd8b1b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:28:11,100 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 21:28:11,105 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 17 states have (on average 1.4705882352941178) internal successors, (25), 18 states have internal predecessors, (25), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-23 21:28:11,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-11-23 21:28:11,115 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:28:11,116 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:28:11,119 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:28:11,126 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:28:11,126 INFO L85 PathProgramCache]: Analyzing trace with hash -1472834336, now seen corresponding path program 1 times [2023-11-23 21:28:11,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:28:11,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1539112604] [2023-11-23 21:28:11,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:28:11,141 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:28:11,142 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_616e21fb-79dc-411a-bcbb-d6aa1ee3da5f/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:28:11,148 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_616e21fb-79dc-411a-bcbb-d6aa1ee3da5f/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-23 21:28:11,179 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_616e21fb-79dc-411a-bcbb-d6aa1ee3da5f/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-11-23 21:28:11,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:28:11,250 INFO L262 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-23 21:28:11,255 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:28:11,283 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:28:11,284 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:28:11,285 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 21:28:11,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1539112604] [2023-11-23 21:28:11,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1539112604] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:28:11,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:28:11,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 21:28:11,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918405964] [2023-11-23 21:28:11,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:28:11,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-23 21:28:11,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 21:28:11,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-23 21:28:11,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-23 21:28:11,337 INFO L87 Difference]: Start difference. First operand has 25 states, 17 states have (on average 1.4705882352941178) internal successors, (25), 18 states have internal predecessors, (25), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 2 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) [2023-11-23 21:28:11,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:28:11,389 INFO L93 Difference]: Finished difference Result 48 states and 67 transitions. [2023-11-23 21:28:11,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-23 21:28:11,393 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 2 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) Word has length 19 [2023-11-23 21:28:11,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:28:11,401 INFO L225 Difference]: With dead ends: 48 [2023-11-23 21:28:11,401 INFO L226 Difference]: Without dead ends: 23 [2023-11-23 21:28:11,405 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-23 21:28:11,410 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 21:28:11,411 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 25 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 21:28:11,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2023-11-23 21:28:11,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2023-11-23 21:28:11,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 16 states have (on average 1.1875) internal successors, (19), 16 states have internal predecessors, (19), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-23 21:28:11,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2023-11-23 21:28:11,452 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 19 [2023-11-23 21:28:11,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:28:11,452 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2023-11-23 21:28:11,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 2 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) [2023-11-23 21:28:11,453 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2023-11-23 21:28:11,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-11-23 21:28:11,454 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:28:11,454 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:28:11,465 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_616e21fb-79dc-411a-bcbb-d6aa1ee3da5f/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-11-23 21:28:11,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_616e21fb-79dc-411a-bcbb-d6aa1ee3da5f/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:28:11,655 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:28:11,656 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:28:11,656 INFO L85 PathProgramCache]: Analyzing trace with hash -299109210, now seen corresponding path program 1 times [2023-11-23 21:28:11,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:28:11,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [194600303] [2023-11-23 21:28:11,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:28:11,657 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:28:11,657 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_616e21fb-79dc-411a-bcbb-d6aa1ee3da5f/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:28:11,659 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_616e21fb-79dc-411a-bcbb-d6aa1ee3da5f/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-23 21:28:11,696 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_616e21fb-79dc-411a-bcbb-d6aa1ee3da5f/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-11-23 21:28:11,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:28:11,802 INFO L262 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-23 21:28:11,807 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:28:12,260 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-23 21:28:12,272 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 21:28:12,273 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 10 [2023-11-23 21:28:12,415 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-23 21:28:12,415 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:28:12,415 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 21:28:12,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [194600303] [2023-11-23 21:28:12,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [194600303] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:28:12,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:28:12,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-23 21:28:12,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756480549] [2023-11-23 21:28:12,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:28:12,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-23 21:28:12,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 21:28:12,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-23 21:28:12,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2023-11-23 21:28:12,420 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand has 11 states, 10 states have (on average 1.1) internal successors, (11), 8 states have internal predecessors, (11), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-23 21:28:12,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:28:12,994 INFO L93 Difference]: Finished difference Result 42 states and 51 transitions. [2023-11-23 21:28:12,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-23 21:28:12,995 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 1.1) internal successors, (11), 8 states have internal predecessors, (11), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 19 [2023-11-23 21:28:12,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:28:12,997 INFO L225 Difference]: With dead ends: 42 [2023-11-23 21:28:12,997 INFO L226 Difference]: Without dead ends: 40 [2023-11-23 21:28:12,998 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2023-11-23 21:28:13,000 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 36 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-23 21:28:13,000 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 147 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-23 21:28:13,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2023-11-23 21:28:13,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 32. [2023-11-23 21:28:13,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 23 states have internal predecessors, (26), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-23 21:28:13,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 38 transitions. [2023-11-23 21:28:13,015 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 38 transitions. Word has length 19 [2023-11-23 21:28:13,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:28:13,016 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 38 transitions. [2023-11-23 21:28:13,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 1.1) internal successors, (11), 8 states have internal predecessors, (11), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-23 21:28:13,016 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 38 transitions. [2023-11-23 21:28:13,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-11-23 21:28:13,017 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:28:13,017 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:28:13,033 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_616e21fb-79dc-411a-bcbb-d6aa1ee3da5f/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-11-23 21:28:13,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_616e21fb-79dc-411a-bcbb-d6aa1ee3da5f/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:28:13,220 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:28:13,221 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:28:13,221 INFO L85 PathProgramCache]: Analyzing trace with hash 1811200265, now seen corresponding path program 1 times [2023-11-23 21:28:13,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:28:13,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1222801017] [2023-11-23 21:28:13,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:28:13,222 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:28:13,222 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_616e21fb-79dc-411a-bcbb-d6aa1ee3da5f/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:28:13,224 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_616e21fb-79dc-411a-bcbb-d6aa1ee3da5f/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-23 21:28:13,229 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_616e21fb-79dc-411a-bcbb-d6aa1ee3da5f/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-11-23 21:28:13,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:28:13,354 INFO L262 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-23 21:28:13,357 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:28:14,405 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-23 21:28:14,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 21:28:14,412 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-23 21:28:14,539 INFO L349 Elim1Store]: treesize reduction 54, result has 42.6 percent of original size [2023-11-23 21:28:14,540 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 47 treesize of output 52 [2023-11-23 21:28:14,762 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:28:14,762 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:28:15,131 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 21:28:15,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1222801017] [2023-11-23 21:28:15,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1222801017] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:28:15,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [368829137] [2023-11-23 21:28:15,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:28:15,132 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-23 21:28:15,132 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_616e21fb-79dc-411a-bcbb-d6aa1ee3da5f/bin/utaipan-verify-mE87zJ7Ire/cvc4 [2023-11-23 21:28:15,135 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_616e21fb-79dc-411a-bcbb-d6aa1ee3da5f/bin/utaipan-verify-mE87zJ7Ire/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-23 21:28:15,159 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_616e21fb-79dc-411a-bcbb-d6aa1ee3da5f/bin/utaipan-verify-mE87zJ7Ire/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2023-11-23 21:28:15,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:28:15,247 INFO L262 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-23 21:28:15,251 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:28:15,263 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2023-11-23 21:28:17,439 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~a~0#1.base_BEFORE_CALL_2| (_ BitVec 32))) (= ((as const (Array (_ BitVec 32) (_ BitVec 32))) (_ bv0 32)) (select |c_#memory_int| |v_ULTIMATE.start_main_~a~0#1.base_BEFORE_CALL_2|))) is different from true [2023-11-23 21:28:17,909 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 23 [2023-11-23 21:28:18,007 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-23 21:28:18,007 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:28:18,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [368829137] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:28:18,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 21:28:18,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [16] total 19 [2023-11-23 21:28:18,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791572463] [2023-11-23 21:28:18,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:28:18,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-23 21:28:18,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 21:28:18,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-23 21:28:18,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=403, Unknown=1, NotChecked=40, Total=506 [2023-11-23 21:28:18,010 INFO L87 Difference]: Start difference. First operand 32 states and 38 transitions. Second operand has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-23 21:28:18,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:28:18,208 INFO L93 Difference]: Finished difference Result 42 states and 46 transitions. [2023-11-23 21:28:18,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-23 21:28:18,209 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 21 [2023-11-23 21:28:18,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:28:18,211 INFO L225 Difference]: With dead ends: 42 [2023-11-23 21:28:18,211 INFO L226 Difference]: Without dead ends: 40 [2023-11-23 21:28:18,212 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=76, Invalid=479, Unknown=1, NotChecked=44, Total=600 [2023-11-23 21:28:18,213 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 10 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 45 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:28:18,214 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 76 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 42 Invalid, 0 Unknown, 45 Unchecked, 0.1s Time] [2023-11-23 21:28:18,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2023-11-23 21:28:18,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 31. [2023-11-23 21:28:18,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 22 states have internal predecessors, (25), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-23 21:28:18,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 33 transitions. [2023-11-23 21:28:18,235 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 33 transitions. Word has length 21 [2023-11-23 21:28:18,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:28:18,236 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 33 transitions. [2023-11-23 21:28:18,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-23 21:28:18,236 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 33 transitions. [2023-11-23 21:28:18,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-11-23 21:28:18,238 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:28:18,239 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:28:18,242 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_616e21fb-79dc-411a-bcbb-d6aa1ee3da5f/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2023-11-23 21:28:18,443 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_616e21fb-79dc-411a-bcbb-d6aa1ee3da5f/bin/utaipan-verify-mE87zJ7Ire/cvc4 --incremental --print-success --lang smt (5)] Ended with exit code 0 [2023-11-23 21:28:18,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_616e21fb-79dc-411a-bcbb-d6aa1ee3da5f/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_616e21fb-79dc-411a-bcbb-d6aa1ee3da5f/bin/utaipan-verify-mE87zJ7Ire/cvc4 --incremental --print-success --lang smt [2023-11-23 21:28:18,642 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:28:18,642 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:28:18,642 INFO L85 PathProgramCache]: Analyzing trace with hash 1125967738, now seen corresponding path program 1 times [2023-11-23 21:28:18,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:28:18,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [27909936] [2023-11-23 21:28:18,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:28:18,643 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:28:18,644 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_616e21fb-79dc-411a-bcbb-d6aa1ee3da5f/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:28:18,645 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_616e21fb-79dc-411a-bcbb-d6aa1ee3da5f/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-23 21:28:18,666 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_616e21fb-79dc-411a-bcbb-d6aa1ee3da5f/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-11-23 21:28:18,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:28:18,716 INFO L262 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-23 21:28:18,718 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:28:18,769 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-11-23 21:28:18,816 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-23 21:28:18,817 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:28:18,817 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 21:28:18,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [27909936] [2023-11-23 21:28:18,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [27909936] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:28:18,818 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:28:18,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-23 21:28:18,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409955048] [2023-11-23 21:28:18,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:28:18,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-23 21:28:18,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 21:28:18,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-23 21:28:18,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-23 21:28:18,820 INFO L87 Difference]: Start difference. First operand 31 states and 33 transitions. Second operand has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-23 21:28:18,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:28:18,990 INFO L93 Difference]: Finished difference Result 50 states and 57 transitions. [2023-11-23 21:28:18,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-23 21:28:18,990 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 26 [2023-11-23 21:28:18,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:28:18,992 INFO L225 Difference]: With dead ends: 50 [2023-11-23 21:28:18,992 INFO L226 Difference]: Without dead ends: 48 [2023-11-23 21:28:18,992 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-23 21:28:18,993 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 12 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:28:18,994 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 90 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 21:28:18,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2023-11-23 21:28:19,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 44. [2023-11-23 21:28:19,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 31 states have (on average 1.1612903225806452) internal successors, (36), 32 states have internal predecessors, (36), 7 states have call successors, (7), 5 states have call predecessors, (7), 5 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2023-11-23 21:28:19,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 50 transitions. [2023-11-23 21:28:19,009 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 50 transitions. Word has length 26 [2023-11-23 21:28:19,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:28:19,010 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 50 transitions. [2023-11-23 21:28:19,010 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 3 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-23 21:28:19,010 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 50 transitions. [2023-11-23 21:28:19,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-11-23 21:28:19,011 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:28:19,012 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:28:19,019 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_616e21fb-79dc-411a-bcbb-d6aa1ee3da5f/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2023-11-23 21:28:19,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_616e21fb-79dc-411a-bcbb-d6aa1ee3da5f/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:28:19,214 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:28:19,215 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:28:19,215 INFO L85 PathProgramCache]: Analyzing trace with hash -960234057, now seen corresponding path program 1 times [2023-11-23 21:28:19,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:28:19,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1774815376] [2023-11-23 21:28:19,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:28:19,216 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:28:19,216 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_616e21fb-79dc-411a-bcbb-d6aa1ee3da5f/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:28:19,217 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_616e21fb-79dc-411a-bcbb-d6aa1ee3da5f/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-23 21:28:19,219 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_616e21fb-79dc-411a-bcbb-d6aa1ee3da5f/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-11-23 21:28:19,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:28:19,309 INFO L262 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-23 21:28:19,312 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:28:20,315 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-23 21:28:20,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 21:28:20,323 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 21:28:20,323 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 13 [2023-11-23 21:28:20,442 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:28:20,443 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:28:21,266 INFO L349 Elim1Store]: treesize reduction 42, result has 28.8 percent of original size [2023-11-23 21:28:21,267 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 37 treesize of output 24 [2023-11-23 21:28:21,435 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-23 21:28:21,435 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 21:28:21,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1774815376] [2023-11-23 21:28:21,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1774815376] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 21:28:21,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1999708706] [2023-11-23 21:28:21,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:28:21,436 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-23 21:28:21,436 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_616e21fb-79dc-411a-bcbb-d6aa1ee3da5f/bin/utaipan-verify-mE87zJ7Ire/cvc4 [2023-11-23 21:28:21,440 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_616e21fb-79dc-411a-bcbb-d6aa1ee3da5f/bin/utaipan-verify-mE87zJ7Ire/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-23 21:28:21,448 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_616e21fb-79dc-411a-bcbb-d6aa1ee3da5f/bin/utaipan-verify-mE87zJ7Ire/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2023-11-23 21:28:21,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:28:21,567 INFO L262 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-23 21:28:21,570 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:28:21,577 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2023-11-23 21:28:24,033 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~a~0#1.base_BEFORE_CALL_7| (_ BitVec 32))) (= ((as const (Array (_ BitVec 32) (_ BitVec 32))) (_ bv0 32)) (select |c_#memory_int| |v_ULTIMATE.start_main_~a~0#1.base_BEFORE_CALL_7|))) is different from true [2023-11-23 21:28:26,314 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~a~0#1.base_BEFORE_CALL_8| (_ BitVec 32))) (= ((as const (Array (_ BitVec 32) (_ BitVec 32))) (_ bv0 32)) (select |c_#memory_int| |v_ULTIMATE.start_main_~a~0#1.base_BEFORE_CALL_8|))) is different from true [2023-11-23 21:28:26,635 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 23 [2023-11-23 21:28:26,742 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 2 not checked. [2023-11-23 21:28:26,742 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:28:37,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1999708706] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:28:37,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2082787651] [2023-11-23 21:28:37,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:28:37,533 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 21:28:37,533 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_616e21fb-79dc-411a-bcbb-d6aa1ee3da5f/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:28:37,539 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_616e21fb-79dc-411a-bcbb-d6aa1ee3da5f/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 21:28:37,567 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_616e21fb-79dc-411a-bcbb-d6aa1ee3da5f/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-23 21:28:37,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:28:37,611 INFO L262 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-23 21:28:37,613 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:28:37,629 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2023-11-23 21:28:39,656 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~a~0#1.base_BEFORE_CALL_9| (_ BitVec 32))) (= ((as const (Array (_ BitVec 32) (_ BitVec 32))) (_ bv0 32)) (select |c_#memory_int| |v_ULTIMATE.start_main_~a~0#1.base_BEFORE_CALL_9|))) is different from true [2023-11-23 21:28:42,006 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~a~0#1.base_BEFORE_CALL_10| (_ BitVec 32))) (= ((as const (Array (_ BitVec 32) (_ BitVec 32))) (_ bv0 32)) (select |c_#memory_int| |v_ULTIMATE.start_main_~a~0#1.base_BEFORE_CALL_10|))) is different from true [2023-11-23 21:28:42,207 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 23 [2023-11-23 21:28:42,271 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 5 not checked. [2023-11-23 21:28:42,273 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 21:28:42,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2082787651] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 21:28:42,335 INFO L185 FreeRefinementEngine]: Found 0 perfect and 4 imperfect interpolant sequences. [2023-11-23 21:28:42,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 10, 8, 10] total 27 [2023-11-23 21:28:42,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861286691] [2023-11-23 21:28:42,336 INFO L85 oduleStraightlineAll]: Using 4 imperfect interpolants to construct interpolant automaton [2023-11-23 21:28:42,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-11-23 21:28:42,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 21:28:42,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-11-23 21:28:42,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=478, Unknown=9, NotChecked=188, Total=756 [2023-11-23 21:28:42,339 INFO L87 Difference]: Start difference. First operand 44 states and 50 transitions. Second operand has 27 states, 25 states have (on average 2.28) internal successors, (57), 24 states have internal predecessors, (57), 6 states have call successors, (12), 8 states have call predecessors, (12), 7 states have return successors, (11), 5 states have call predecessors, (11), 4 states have call successors, (11) [2023-11-23 21:28:45,890 WARN L876 $PredicateComparison]: unable to prove that (let ((.cse0 ((as const (Array (_ BitVec 32) (_ BitVec 32))) (_ bv0 32)))) (and (exists ((|v_ULTIMATE.start_main_~a~0#1.base_BEFORE_CALL_9| (_ BitVec 32))) (= .cse0 (select |c_#memory_int| |v_ULTIMATE.start_main_~a~0#1.base_BEFORE_CALL_9|))) (exists ((|v_ULTIMATE.start_main_~a~0#1.base_BEFORE_CALL_7| (_ BitVec 32))) (= .cse0 (select |c_#memory_int| |v_ULTIMATE.start_main_~a~0#1.base_BEFORE_CALL_7|))) (exists ((|ULTIMATE.start_main_~y~0#1| (_ BitVec 32)) (|v_ULTIMATE.start_main_~a~0#1.base_BEFORE_CALL_3| (_ BitVec 32))) (and (not (bvslt (_ bv1 32) |ULTIMATE.start_main_~y~0#1|)) (let ((.cse1 (select |c_#memory_int| |v_ULTIMATE.start_main_~a~0#1.base_BEFORE_CALL_3|))) (bvsle (select .cse1 (_ bv0 32)) (select .cse1 (bvmul (_ bv4 32) |ULTIMATE.start_main_~y~0#1|)))) (bvslt (_ bv0 32) |ULTIMATE.start_main_~y~0#1|))))) is different from true [2023-11-23 21:28:49,156 WARN L876 $PredicateComparison]: unable to prove that (let ((.cse0 ((as const (Array (_ BitVec 32) (_ BitVec 32))) (_ bv0 32)))) (and (exists ((|v_ULTIMATE.start_main_~a~0#1.base_BEFORE_CALL_10| (_ BitVec 32))) (= .cse0 (select |c_#memory_int| |v_ULTIMATE.start_main_~a~0#1.base_BEFORE_CALL_10|))) (exists ((|v_ULTIMATE.start_main_~a~0#1.base_BEFORE_CALL_8| (_ BitVec 32))) (= .cse0 (select |c_#memory_int| |v_ULTIMATE.start_main_~a~0#1.base_BEFORE_CALL_8|))) (exists ((|ULTIMATE.start_main_~y~0#1| (_ BitVec 32)) (|v_ULTIMATE.start_main_~a~0#1.base_BEFORE_CALL_3| (_ BitVec 32))) (and (not (bvslt (_ bv1 32) |ULTIMATE.start_main_~y~0#1|)) (let ((.cse1 (select |c_#memory_int| |v_ULTIMATE.start_main_~a~0#1.base_BEFORE_CALL_3|))) (bvsle (select .cse1 (_ bv0 32)) (select .cse1 (bvmul (_ bv4 32) |ULTIMATE.start_main_~y~0#1|)))) (bvslt (_ bv0 32) |ULTIMATE.start_main_~y~0#1|))))) is different from true [2023-11-23 21:28:50,581 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-23 21:28:52,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:28:52,158 INFO L93 Difference]: Finished difference Result 98 states and 121 transitions. [2023-11-23 21:28:52,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-11-23 21:28:52,160 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 25 states have (on average 2.28) internal successors, (57), 24 states have internal predecessors, (57), 6 states have call successors, (12), 8 states have call predecessors, (12), 7 states have return successors, (11), 5 states have call predecessors, (11), 4 states have call successors, (11) Word has length 28 [2023-11-23 21:28:52,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:28:52,161 INFO L225 Difference]: With dead ends: 98 [2023-11-23 21:28:52,161 INFO L226 Difference]: Without dead ends: 0 [2023-11-23 21:28:52,164 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 90 SyntacticMatches, 7 SemanticMatches, 46 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 332 ImplicationChecksByTransitivity, 27.1s TimeCoverageRelationStatistics Valid=292, Invalid=1443, Unknown=11, NotChecked=510, Total=2256 [2023-11-23 21:28:52,166 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 54 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 378 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 809 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 378 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 401 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2023-11-23 21:28:52,166 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 172 Invalid, 809 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 378 Invalid, 0 Unknown, 401 Unchecked, 4.2s Time] [2023-11-23 21:28:52,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-23 21:28:52,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-23 21:28:52,168 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) [2023-11-23 21:28:52,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-23 21:28:52,168 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 28 [2023-11-23 21:28:52,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:28:52,169 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-23 21:28:52,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 25 states have (on average 2.28) internal successors, (57), 24 states have internal predecessors, (57), 6 states have call successors, (12), 8 states have call predecessors, (12), 7 states have return successors, (11), 5 states have call predecessors, (11), 4 states have call successors, (11) [2023-11-23 21:28:52,170 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-23 21:28:52,170 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-23 21:28:52,173 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-23 21:28:52,205 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_616e21fb-79dc-411a-bcbb-d6aa1ee3da5f/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-23 21:28:52,386 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_616e21fb-79dc-411a-bcbb-d6aa1ee3da5f/bin/utaipan-verify-mE87zJ7Ire/cvc4 --incremental --print-success --lang smt (8)] Forceful destruction successful, exit code 0 [2023-11-23 21:28:52,586 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_616e21fb-79dc-411a-bcbb-d6aa1ee3da5f/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-11-23 21:28:52,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_616e21fb-79dc-411a-bcbb-d6aa1ee3da5f/bin/utaipan-verify-mE87zJ7Ire/z3 -smt2 -in SMTLIB2_COMPLIANT=true,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_616e21fb-79dc-411a-bcbb-d6aa1ee3da5f/bin/utaipan-verify-mE87zJ7Ire/cvc4 --incremental --print-success --lang smt,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_616e21fb-79dc-411a-bcbb-d6aa1ee3da5f/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:28:52,786 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-11-23 21:28:53,799 INFO L895 garLoopResultBuilder]: At program point L35-2(lines 25 37) the Hoare annotation is: (and (= ((as const (Array (_ BitVec 32) (_ BitVec 32))) (_ bv0 32)) (select |#memory_int| |ULTIMATE.start_main_~a~0#1.base|)) (bvsge |ULTIMATE.start_main_~n~0#1| (_ bv0 32)) (bvslt |ULTIMATE.start_main_~n~0#1| (_ bv1073741824 32))) [2023-11-23 21:28:53,799 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-11-23 21:28:53,799 INFO L899 garLoopResultBuilder]: For program point L25-2(lines 25 37) no Hoare annotation was computed. [2023-11-23 21:28:53,800 INFO L902 garLoopResultBuilder]: At program point L19(line 19) the Hoare annotation is: true [2023-11-23 21:28:53,800 INFO L899 garLoopResultBuilder]: For program point L19-1(line 19) no Hoare annotation was computed. [2023-11-23 21:28:53,800 INFO L895 garLoopResultBuilder]: At program point L46(line 46) the Hoare annotation is: (let ((.cse0 ((as const (Array (_ BitVec 32) (_ BitVec 32))) (_ bv0 32)))) (and (= .cse0 (select |#memory_int| |ULTIMATE.start_main_~a~0#1.base|)) (bvsge |ULTIMATE.start_main_~n~0#1| (_ bv0 32)) (bvslt |ULTIMATE.start_main_~n~0#1| (_ bv1073741824 32)) (exists ((|ULTIMATE.start_main_~i~0#1| (_ BitVec 32)) (|ULTIMATE.start_main_~a~0#1.offset| (_ BitVec 32)) (|ULTIMATE.start_main_~x~0#1| (_ BitVec 32))) (and (= |ULTIMATE.start_main_#t~mem15#1| (select .cse0 (bvadd |ULTIMATE.start_main_~a~0#1.offset| (bvmul (_ bv4 32) |ULTIMATE.start_main_~i~0#1|)))) (= (select .cse0 (bvadd (bvmul (_ bv4 32) |ULTIMATE.start_main_~x~0#1|) |ULTIMATE.start_main_~a~0#1.offset|)) |ULTIMATE.start_main_#t~mem16#1|))))) [2023-11-23 21:28:53,800 INFO L899 garLoopResultBuilder]: For program point L46-1(line 46) no Hoare annotation was computed. [2023-11-23 21:28:53,801 INFO L895 garLoopResultBuilder]: At program point L42(line 42) the Hoare annotation is: (and (= ((as const (Array (_ BitVec 32) (_ BitVec 32))) (_ bv0 32)) (select |#memory_int| |ULTIMATE.start_main_~a~0#1.base|)) (bvsge |ULTIMATE.start_main_~n~0#1| (_ bv0 32)) (bvslt |ULTIMATE.start_main_~n~0#1| (_ bv1073741824 32)) (let ((.cse0 (bvmul (_ bv4 32) |ULTIMATE.start_main_~x~0#1|))) (or (= (bvadd (_ bv4 32) .cse0) (_ bv0 32)) (bvslt (bvadd |ULTIMATE.start_main_~x~0#1| (_ bv1 32)) |ULTIMATE.start_main_~y~0#1|) (not (bvslt |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|)) (= .cse0 (_ bv0 32))))) [2023-11-23 21:28:53,801 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-11-23 21:28:53,801 INFO L899 garLoopResultBuilder]: For program point L42-1(line 42) no Hoare annotation was computed. [2023-11-23 21:28:53,801 INFO L895 garLoopResultBuilder]: At program point L43(line 43) the Hoare annotation is: (let ((.cse0 ((as const (Array (_ BitVec 32) (_ BitVec 32))) (_ bv0 32)))) (and (= .cse0 (select |#memory_int| |ULTIMATE.start_main_~a~0#1.base|)) (bvsge |ULTIMATE.start_main_~n~0#1| (_ bv0 32)) (bvslt |ULTIMATE.start_main_~n~0#1| (_ bv1073741824 32)) (let ((.cse1 (bvmul (_ bv4 32) |ULTIMATE.start_main_~x~0#1|))) (or (= (bvadd (_ bv4 32) .cse1) (_ bv0 32)) (bvslt (bvadd |ULTIMATE.start_main_~x~0#1| (_ bv1 32)) |ULTIMATE.start_main_~y~0#1|) (not (bvslt |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|)) (= .cse1 (_ bv0 32)))) (exists ((|ULTIMATE.start_main_~i~0#1| (_ BitVec 32)) (|ULTIMATE.start_main_~a~0#1.offset| (_ BitVec 32)) (|ULTIMATE.start_main_~x~0#1| (_ BitVec 32))) (and (= |ULTIMATE.start_main_#t~mem12#1| (select .cse0 (bvadd |ULTIMATE.start_main_~a~0#1.offset| (bvmul (_ bv4 32) |ULTIMATE.start_main_~i~0#1|)))) (= (select .cse0 (bvadd (bvmul (_ bv4 32) |ULTIMATE.start_main_~x~0#1|) |ULTIMATE.start_main_~a~0#1.offset|)) |ULTIMATE.start_main_#t~mem13#1|))))) [2023-11-23 21:28:53,801 INFO L899 garLoopResultBuilder]: For program point L43-1(line 43) no Hoare annotation was computed. [2023-11-23 21:28:53,802 INFO L895 garLoopResultBuilder]: At program point L45-3(lines 45 47) the Hoare annotation is: (and (= ((as const (Array (_ BitVec 32) (_ BitVec 32))) (_ bv0 32)) (select |#memory_int| |ULTIMATE.start_main_~a~0#1.base|)) (bvsge |ULTIMATE.start_main_~n~0#1| (_ bv0 32)) (bvslt |ULTIMATE.start_main_~n~0#1| (_ bv1073741824 32))) [2023-11-23 21:28:53,802 INFO L899 garLoopResultBuilder]: For program point L45-4(lines 45 47) no Hoare annotation was computed. [2023-11-23 21:28:53,802 INFO L899 garLoopResultBuilder]: For program point L35(lines 35 36) no Hoare annotation was computed. [2023-11-23 21:28:53,802 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 7 9) the Hoare annotation is: true [2023-11-23 21:28:53,802 INFO L899 garLoopResultBuilder]: For program point L8(line 8) no Hoare annotation was computed. [2023-11-23 21:28:53,802 INFO L899 garLoopResultBuilder]: For program point L8-2(lines 7 9) no Hoare annotation was computed. [2023-11-23 21:28:53,802 INFO L899 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 7 9) no Hoare annotation was computed. [2023-11-23 21:28:53,802 INFO L899 garLoopResultBuilder]: For program point L11(line 11) no Hoare annotation was computed. [2023-11-23 21:28:53,802 INFO L899 garLoopResultBuilder]: For program point L11-1(line 11) no Hoare annotation was computed. [2023-11-23 21:28:53,803 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 10 12) no Hoare annotation was computed. [2023-11-23 21:28:53,803 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 10 12) the Hoare annotation is: true [2023-11-23 21:28:53,803 INFO L899 garLoopResultBuilder]: For program point L11-3(lines 10 12) no Hoare annotation was computed. [2023-11-23 21:28:53,803 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 11) no Hoare annotation was computed. [2023-11-23 21:28:53,807 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-11-23 21:28:53,809 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-23 21:28:53,816 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.UnsupportedOperationException: translation of (const (_ BitVec 32) (Array (_ BitVec 32) (_ BitVec 32))) not yet implemented, please contact Matthias at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:235) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:173) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:173) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:137) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.RCFGBacktranslator.translateExpression(RCFGBacktranslator.java:401) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.RCFGBacktranslator.translateExpression(RCFGBacktranslator.java:1) at de.uni_freiburg.informatik.ultimate.core.lib.translation.DefaultTranslator.translateExpressionWithContext(DefaultTranslator.java:165) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateExpressionWithContext(ModelTranslationContainer.java:101) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateExpressionWithContextToString(ModelTranslationContainer.java:91) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.BacktranslationService.translateExpressionWithContextToString(BacktranslationService.java:98) at de.uni_freiburg.informatik.ultimate.core.lib.results.InvariantResult.(InvariantResult.java:47) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.createInvariantResults(TraceAbstractionStarter.java:454) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:191) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2023-11-23 21:28:53,824 INFO L158 Benchmark]: Toolchain (without parser) took 43740.71ms. Allocated memory was 100.7MB in the beginning and 121.6MB in the end (delta: 21.0MB). Free memory was 76.8MB in the beginning and 77.1MB in the end (delta: -297.7kB). Peak memory consumption was 66.4MB. Max. memory is 16.1GB. [2023-11-23 21:28:53,825 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 75.5MB. Free memory is still 52.1MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 21:28:53,826 INFO L158 Benchmark]: CACSL2BoogieTranslator took 286.51ms. Allocated memory is still 100.7MB. Free memory was 76.6MB in the beginning and 65.2MB in the end (delta: 11.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-23 21:28:53,826 INFO L158 Benchmark]: Boogie Procedure Inliner took 62.89ms. Allocated memory is still 100.7MB. Free memory was 65.0MB in the beginning and 63.5MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 21:28:53,827 INFO L158 Benchmark]: Boogie Preprocessor took 62.89ms. Allocated memory is still 100.7MB. Free memory was 63.5MB in the beginning and 62.1MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 21:28:53,828 INFO L158 Benchmark]: RCFGBuilder took 493.58ms. Allocated memory is still 100.7MB. Free memory was 61.9MB in the beginning and 71.6MB in the end (delta: -9.6MB). Peak memory consumption was 9.9MB. Max. memory is 16.1GB. [2023-11-23 21:28:53,829 INFO L158 Benchmark]: TraceAbstraction took 42827.60ms. Allocated memory was 100.7MB in the beginning and 121.6MB in the end (delta: 21.0MB). Free memory was 71.0MB in the beginning and 77.1MB in the end (delta: -6.1MB). Peak memory consumption was 58.6MB. Max. memory is 16.1GB. [2023-11-23 21:28:53,836 INFO L338 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 75.5MB. Free memory is still 52.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 286.51ms. Allocated memory is still 100.7MB. Free memory was 76.6MB in the beginning and 65.2MB in the end (delta: 11.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 62.89ms. Allocated memory is still 100.7MB. Free memory was 65.0MB in the beginning and 63.5MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 62.89ms. Allocated memory is still 100.7MB. Free memory was 63.5MB in the beginning and 62.1MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 493.58ms. Allocated memory is still 100.7MB. Free memory was 61.9MB in the beginning and 71.6MB in the end (delta: -9.6MB). Peak memory consumption was 9.9MB. Max. memory is 16.1GB. * TraceAbstraction took 42827.60ms. Allocated memory was 100.7MB in the beginning and 121.6MB in the end (delta: 21.0MB). Free memory was 71.0MB in the beginning and 77.1MB in the end (delta: -6.1MB). Peak memory consumption was 58.6MB. 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: 11]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 25 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 42.7s, OverallIterations: 5, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 10.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 117 SdHoareTripleChecker+Valid, 4.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 112 mSDsluCounter, 510 SdHoareTripleChecker+Invalid, 4.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 446 IncrementalHoareTripleChecker+Unchecked, 406 mSDsCounter, 47 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 646 IncrementalHoareTripleChecker+Invalid, 1139 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 47 mSolverCounterUnsat, 104 mSDtfsCounter, 646 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 259 GetRequests, 161 SyntacticMatches, 8 SemanticMatches, 90 ConstructedPredicates, 7 IntricatePredicates, 0 DeprecatedPredicates, 492 ImplicationChecksByTransitivity, 31.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=44occurred in iteration=4, InterpolantAutomatonStates: 52, 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, 5 MinimizatonAttempts, 21 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 28 PreInvPairs, 48 NumberOfFragments, 156 HoareAnnotationTreeSize, 28 FomulaSimplifications, 1144 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 8 FomulaSimplificationsInter, 1299 FormulaSimplificationTreeSizeReductionInter, 0.9s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 28.1s InterpolantComputationTime, 190 NumberOfCodeBlocks, 190 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 209 ConstructedInterpolants, 43 QuantifiedInterpolants, 1613 SizeOfPredicates, 63 NumberOfNonLiveVariables, 469 ConjunctsInSsa, 91 ConjunctsInUnsatCore, 9 InterpolantComputations, 4 PerfectInterpolantSequences, 37/52 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - ExceptionOrErrorResult: UnsupportedOperationException: translation of (const (_ BitVec 32) (Array (_ BitVec 32) (_ BitVec 32))) not yet implemented, please contact Matthias de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: UnsupportedOperationException: translation of (const (_ BitVec 32) (Array (_ BitVec 32) (_ BitVec 32))) not yet implemented, please contact Matthias: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:235) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2023-11-23 21:28:53,901 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_616e21fb-79dc-411a-bcbb-d6aa1ee3da5f/bin/utaipan-verify-mE87zJ7Ire/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: ERROR: ExceptionOrErrorResult: UnsupportedOperationException: translation of (const (_ BitVec 32) (Array (_ BitVec 32) (_ BitVec 32))) not yet implemented, please contact Matthias