./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/floats-cbmc-regression/float-no-simp6.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e77c044 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b53746bf-e8c1-40c7-a0e0-48a68e683296/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b53746bf-e8c1-40c7-a0e0-48a68e683296/bin/utaipan-q2qaUkNPG8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b53746bf-e8c1-40c7-a0e0-48a68e683296/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b53746bf-e8c1-40c7-a0e0-48a68e683296/bin/utaipan-q2qaUkNPG8/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-cbmc-regression/float-no-simp6.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b53746bf-e8c1-40c7-a0e0-48a68e683296/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b53746bf-e8c1-40c7-a0e0-48a68e683296/bin/utaipan-q2qaUkNPG8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6a5ffd33a79ac0f158a6e6ff96de12eae93b56cb ........................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b53746bf-e8c1-40c7-a0e0-48a68e683296/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b53746bf-e8c1-40c7-a0e0-48a68e683296/bin/utaipan-q2qaUkNPG8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b53746bf-e8c1-40c7-a0e0-48a68e683296/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b53746bf-e8c1-40c7-a0e0-48a68e683296/bin/utaipan-q2qaUkNPG8/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-cbmc-regression/float-no-simp6.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b53746bf-e8c1-40c7-a0e0-48a68e683296/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b53746bf-e8c1-40c7-a0e0-48a68e683296/bin/utaipan-q2qaUkNPG8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6a5ffd33a79ac0f158a6e6ff96de12eae93b56cb ......................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 07:11:35,246 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 07:11:35,249 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 07:11:35,280 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 07:11:35,280 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 07:11:35,282 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 07:11:35,284 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 07:11:35,287 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 07:11:35,289 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 07:11:35,290 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 07:11:35,292 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 07:11:35,293 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 07:11:35,294 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 07:11:35,295 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 07:11:35,297 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 07:11:35,298 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 07:11:35,299 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 07:11:35,300 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 07:11:35,302 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 07:11:35,305 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 07:11:35,306 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 07:11:35,308 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 07:11:35,310 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 07:11:35,311 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 07:11:35,315 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 07:11:35,315 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 07:11:35,316 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 07:11:35,317 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 07:11:35,318 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 07:11:35,319 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 07:11:35,320 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 07:11:35,321 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 07:11:35,322 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 07:11:35,323 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 07:11:35,325 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 07:11:35,325 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 07:11:35,326 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 07:11:35,327 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 07:11:35,327 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 07:11:35,329 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 07:11:35,330 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 07:11:35,331 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b53746bf-e8c1-40c7-a0e0-48a68e683296/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-13 07:11:35,358 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 07:11:35,358 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 07:11:35,359 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 07:11:35,359 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 07:11:35,360 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 07:11:35,360 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 07:11:35,360 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-13 07:11:35,361 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 07:11:35,361 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 07:11:35,361 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-13 07:11:35,361 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-13 07:11:35,362 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 07:11:35,362 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-13 07:11:35,362 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-13 07:11:35,363 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-13 07:11:35,364 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 07:11:35,364 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 07:11:35,364 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 07:11:35,365 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 07:11:35,365 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 07:11:35,365 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 07:11:35,365 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 07:11:35,366 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 07:11:35,366 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 07:11:35,366 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 07:11:35,367 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 07:11:35,367 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 07:11:35,367 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 07:11:35,368 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 07:11:35,368 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 07:11:35,368 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:11:35,369 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 07:11:35,369 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 07:11:35,369 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 07:11:35,370 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-13 07:11:35,370 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 07:11:35,370 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 07:11:35,370 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 07:11:35,371 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 07:11:35,371 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b53746bf-e8c1-40c7-a0e0-48a68e683296/bin/utaipan-q2qaUkNPG8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b53746bf-e8c1-40c7-a0e0-48a68e683296/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6a5ffd33a79ac0f158a6e6ff96de12eae93b56cb [2021-10-13 07:11:35,636 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 07:11:35,669 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 07:11:35,672 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 07:11:35,673 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 07:11:35,674 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 07:11:35,675 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b53746bf-e8c1-40c7-a0e0-48a68e683296/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/floats-cbmc-regression/float-no-simp6.c [2021-10-13 07:11:35,776 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b53746bf-e8c1-40c7-a0e0-48a68e683296/bin/utaipan-q2qaUkNPG8/data/6d115faea/d73fc3c0a6c4407c8a1499649b8ce206/FLAG4d2826b0f [2021-10-13 07:11:36,305 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 07:11:36,307 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b53746bf-e8c1-40c7-a0e0-48a68e683296/sv-benchmarks/c/floats-cbmc-regression/float-no-simp6.c [2021-10-13 07:11:36,320 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b53746bf-e8c1-40c7-a0e0-48a68e683296/bin/utaipan-q2qaUkNPG8/data/6d115faea/d73fc3c0a6c4407c8a1499649b8ce206/FLAG4d2826b0f [2021-10-13 07:11:36,676 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b53746bf-e8c1-40c7-a0e0-48a68e683296/bin/utaipan-q2qaUkNPG8/data/6d115faea/d73fc3c0a6c4407c8a1499649b8ce206 [2021-10-13 07:11:36,685 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 07:11:36,687 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 07:11:36,690 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 07:11:36,690 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 07:11:36,694 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 07:11:36,694 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:11:36" (1/1) ... [2021-10-13 07:11:36,696 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@563dd936 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:11:36, skipping insertion in model container [2021-10-13 07:11:36,696 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:11:36" (1/1) ... [2021-10-13 07:11:36,704 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 07:11:36,718 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 07:11:36,959 WARN L228 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_b53746bf-e8c1-40c7-a0e0-48a68e683296/sv-benchmarks/c/floats-cbmc-regression/float-no-simp6.c[1010,1023] [2021-10-13 07:11:36,968 WARN L228 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_b53746bf-e8c1-40c7-a0e0-48a68e683296/sv-benchmarks/c/floats-cbmc-regression/float-no-simp6.c[1167,1180] [2021-10-13 07:11:36,974 WARN L228 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_b53746bf-e8c1-40c7-a0e0-48a68e683296/sv-benchmarks/c/floats-cbmc-regression/float-no-simp6.c[1293,1306] [2021-10-13 07:11:36,975 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:11:36,983 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 07:11:37,000 WARN L228 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_b53746bf-e8c1-40c7-a0e0-48a68e683296/sv-benchmarks/c/floats-cbmc-regression/float-no-simp6.c[1010,1023] [2021-10-13 07:11:37,003 WARN L228 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_b53746bf-e8c1-40c7-a0e0-48a68e683296/sv-benchmarks/c/floats-cbmc-regression/float-no-simp6.c[1167,1180] [2021-10-13 07:11:37,006 WARN L228 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_b53746bf-e8c1-40c7-a0e0-48a68e683296/sv-benchmarks/c/floats-cbmc-regression/float-no-simp6.c[1293,1306] [2021-10-13 07:11:37,007 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:11:37,020 INFO L208 MainTranslator]: Completed translation [2021-10-13 07:11:37,021 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:11:37 WrapperNode [2021-10-13 07:11:37,021 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 07:11:37,023 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 07:11:37,023 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 07:11:37,023 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 07:11:37,031 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:11:37" (1/1) ... [2021-10-13 07:11:37,037 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:11:37" (1/1) ... [2021-10-13 07:11:37,054 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 07:11:37,055 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 07:11:37,056 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 07:11:37,056 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 07:11:37,064 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:11:37" (1/1) ... [2021-10-13 07:11:37,064 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:11:37" (1/1) ... [2021-10-13 07:11:37,065 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:11:37" (1/1) ... [2021-10-13 07:11:37,066 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:11:37" (1/1) ... [2021-10-13 07:11:37,070 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:11:37" (1/1) ... [2021-10-13 07:11:37,071 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:11:37" (1/1) ... [2021-10-13 07:11:37,072 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:11:37" (1/1) ... [2021-10-13 07:11:37,074 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 07:11:37,075 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 07:11:37,075 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 07:11:37,075 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 07:11:37,077 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:11:37" (1/1) ... [2021-10-13 07:11:37,085 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:11:37,100 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b53746bf-e8c1-40c7-a0e0-48a68e683296/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:11:37,118 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b53746bf-e8c1-40c7-a0e0-48a68e683296/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 07:11:37,135 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b53746bf-e8c1-40c7-a0e0-48a68e683296/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 07:11:37,170 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-13 07:11:37,171 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 07:11:37,171 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 07:11:37,171 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 07:11:37,431 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 07:11:37,432 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-10-13 07:11:37,434 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:11:37 BoogieIcfgContainer [2021-10-13 07:11:37,435 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 07:11:37,436 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 07:11:37,437 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 07:11:37,440 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 07:11:37,440 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:11:36" (1/3) ... [2021-10-13 07:11:37,441 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@385af76e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:11:37, skipping insertion in model container [2021-10-13 07:11:37,441 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:11:37" (2/3) ... [2021-10-13 07:11:37,442 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@385af76e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:11:37, skipping insertion in model container [2021-10-13 07:11:37,442 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:11:37" (3/3) ... [2021-10-13 07:11:37,444 INFO L111 eAbstractionObserver]: Analyzing ICFG float-no-simp6.c [2021-10-13 07:11:37,449 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 07:11:37,468 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-10-13 07:11:37,514 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 07:11:37,521 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-13 07:11:37,521 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-10-13 07:11:37,548 INFO L276 IsEmpty]: Start isEmpty. Operand has 14 states, 10 states have (on average 1.6) internal successors, (16), 13 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:11:37,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-13 07:11:37,554 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:11:37,555 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-13 07:11:37,558 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:11:37,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:11:37,570 INFO L82 PathProgramCache]: Analyzing trace with hash 60704, now seen corresponding path program 1 times [2021-10-13 07:11:37,579 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:11:37,579 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963039001] [2021-10-13 07:11:37,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:11:37,581 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:11:37,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 07:11:37,674 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 07:11:37,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 07:11:37,714 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-13 07:11:37,717 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-13 07:11:37,718 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:11:37,720 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:11:37,721 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:11:37,721 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-13 07:11:37,728 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 07:11:37,743 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 07:11:37 BoogieIcfgContainer [2021-10-13 07:11:37,743 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 07:11:37,744 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 07:11:37,744 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 07:11:37,745 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 07:11:37,745 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:11:37" (3/4) ... [2021-10-13 07:11:37,748 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-13 07:11:37,749 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 07:11:37,751 INFO L168 Benchmark]: Toolchain (without parser) took 1062.81 ms. Allocated memory was 90.2 MB in the beginning and 127.9 MB in the end (delta: 37.7 MB). Free memory was 54.8 MB in the beginning and 75.5 MB in the end (delta: -20.7 MB). Peak memory consumption was 13.8 MB. Max. memory is 16.1 GB. [2021-10-13 07:11:37,752 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 90.2 MB. Free memory was 60.6 MB in the beginning and 60.6 MB in the end (delta: 21.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:11:37,753 INFO L168 Benchmark]: CACSL2BoogieTranslator took 331.70 ms. Allocated memory was 90.2 MB in the beginning and 127.9 MB in the end (delta: 37.7 MB). Free memory was 54.6 MB in the beginning and 100.7 MB in the end (delta: -46.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-13 07:11:37,754 INFO L168 Benchmark]: Boogie Procedure Inliner took 32.21 ms. Allocated memory is still 127.9 MB. Free memory was 100.7 MB in the beginning and 99.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 07:11:37,754 INFO L168 Benchmark]: Boogie Preprocessor took 18.83 ms. Allocated memory is still 127.9 MB. Free memory was 99.3 MB in the beginning and 98.6 MB in the end (delta: 686.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:11:37,755 INFO L168 Benchmark]: RCFGBuilder took 359.92 ms. Allocated memory is still 127.9 MB. Free memory was 98.6 MB in the beginning and 88.8 MB in the end (delta: 9.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-13 07:11:37,756 INFO L168 Benchmark]: TraceAbstraction took 307.20 ms. Allocated memory is still 127.9 MB. Free memory was 88.1 MB in the beginning and 75.5 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-13 07:11:37,756 INFO L168 Benchmark]: Witness Printer took 4.57 ms. Allocated memory is still 127.9 MB. Free memory is still 75.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:11:37,760 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 90.2 MB. Free memory was 60.6 MB in the beginning and 60.6 MB in the end (delta: 21.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 331.70 ms. Allocated memory was 90.2 MB in the beginning and 127.9 MB in the end (delta: 37.7 MB). Free memory was 54.6 MB in the beginning and 100.7 MB in the end (delta: -46.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 32.21 ms. Allocated memory is still 127.9 MB. Free memory was 100.7 MB in the beginning and 99.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 18.83 ms. Allocated memory is still 127.9 MB. Free memory was 99.3 MB in the beginning and 98.6 MB in the end (delta: 686.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 359.92 ms. Allocated memory is still 127.9 MB. Free memory was 98.6 MB in the beginning and 88.8 MB in the end (delta: 9.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 307.20 ms. Allocated memory is still 127.9 MB. Free memory was 88.1 MB in the beginning and 75.5 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Witness Printer took 4.57 ms. Allocated memory is still 127.9 MB. Free memory is still 75.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 25]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 25, overapproximation of someBinaryArithmeticFLOAToperation at line 23. Possible FailurePath: [L20] float f1=0x1.000000p-1f; [L21] float f2=0x1.fffffep-126f; [L23] float res = f1 * f2; [L25] COND TRUE !(res == 0x1.0p-126f) [L25] reach_error() - UnprovableResult [Line: 35]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 44]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 213.8ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 13.8ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 18.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=14occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 5.5ms SsaConstructionTime, 35.3ms SatisfiabilityAnalysisTime, 0.0ms InterpolantComputationTime, 3 NumberOfCodeBlocks, 3 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 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 RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-10-13 07:11:37,805 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b53746bf-e8c1-40c7-a0e0-48a68e683296/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 07:11:40,151 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 07:11:40,155 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 07:11:40,219 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 07:11:40,220 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 07:11:40,225 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 07:11:40,227 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 07:11:40,232 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 07:11:40,236 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 07:11:40,250 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 07:11:40,251 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 07:11:40,253 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 07:11:40,254 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 07:11:40,258 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 07:11:40,262 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 07:11:40,270 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 07:11:40,272 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 07:11:40,273 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 07:11:40,275 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 07:11:40,278 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 07:11:40,283 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 07:11:40,285 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 07:11:40,286 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 07:11:40,289 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 07:11:40,296 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 07:11:40,300 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 07:11:40,300 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 07:11:40,301 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 07:11:40,303 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 07:11:40,304 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 07:11:40,304 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 07:11:40,305 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 07:11:40,307 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 07:11:40,308 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 07:11:40,309 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 07:11:40,310 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 07:11:40,330 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 07:11:40,330 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 07:11:40,331 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 07:11:40,333 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 07:11:40,333 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 07:11:40,334 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b53746bf-e8c1-40c7-a0e0-48a68e683296/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-13 07:11:40,382 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 07:11:40,382 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 07:11:40,384 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 07:11:40,384 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 07:11:40,384 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 07:11:40,384 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 07:11:40,385 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 07:11:40,385 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 07:11:40,385 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 07:11:40,387 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 07:11:40,388 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 07:11:40,388 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 07:11:40,388 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 07:11:40,388 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 07:11:40,388 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 07:11:40,389 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 07:11:40,389 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 07:11:40,389 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-13 07:11:40,389 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-13 07:11:40,390 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 07:11:40,390 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 07:11:40,390 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 07:11:40,390 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 07:11:40,390 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 07:11:40,391 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 07:11:40,391 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 07:11:40,391 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:11:40,391 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 07:11:40,392 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 07:11:40,392 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 07:11:40,392 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-13 07:11:40,392 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-13 07:11:40,393 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 07:11:40,393 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 07:11:40,393 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 07:11:40,393 INFO L138 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_b53746bf-e8c1-40c7-a0e0-48a68e683296/bin/utaipan-q2qaUkNPG8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b53746bf-e8c1-40c7-a0e0-48a68e683296/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6a5ffd33a79ac0f158a6e6ff96de12eae93b56cb [2021-10-13 07:11:40,812 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 07:11:40,840 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 07:11:40,844 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 07:11:40,845 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 07:11:40,846 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 07:11:40,847 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b53746bf-e8c1-40c7-a0e0-48a68e683296/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/floats-cbmc-regression/float-no-simp6.c [2021-10-13 07:11:40,936 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b53746bf-e8c1-40c7-a0e0-48a68e683296/bin/utaipan-q2qaUkNPG8/data/715117bcb/6beab25def0b4645b56df94fa1a7bb75/FLAGaf4b6f0f6 [2021-10-13 07:11:41,555 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 07:11:41,556 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b53746bf-e8c1-40c7-a0e0-48a68e683296/sv-benchmarks/c/floats-cbmc-regression/float-no-simp6.c [2021-10-13 07:11:41,565 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b53746bf-e8c1-40c7-a0e0-48a68e683296/bin/utaipan-q2qaUkNPG8/data/715117bcb/6beab25def0b4645b56df94fa1a7bb75/FLAGaf4b6f0f6 [2021-10-13 07:11:41,917 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b53746bf-e8c1-40c7-a0e0-48a68e683296/bin/utaipan-q2qaUkNPG8/data/715117bcb/6beab25def0b4645b56df94fa1a7bb75 [2021-10-13 07:11:41,920 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 07:11:41,922 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 07:11:41,924 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 07:11:41,924 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 07:11:41,928 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 07:11:41,929 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:11:41" (1/1) ... [2021-10-13 07:11:41,931 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@655c1827 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:11:41, skipping insertion in model container [2021-10-13 07:11:41,931 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:11:41" (1/1) ... [2021-10-13 07:11:41,940 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 07:11:41,958 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 07:11:42,119 WARN L228 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_b53746bf-e8c1-40c7-a0e0-48a68e683296/sv-benchmarks/c/floats-cbmc-regression/float-no-simp6.c[1010,1023] [2021-10-13 07:11:42,131 WARN L228 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_b53746bf-e8c1-40c7-a0e0-48a68e683296/sv-benchmarks/c/floats-cbmc-regression/float-no-simp6.c[1167,1180] [2021-10-13 07:11:42,138 WARN L228 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_b53746bf-e8c1-40c7-a0e0-48a68e683296/sv-benchmarks/c/floats-cbmc-regression/float-no-simp6.c[1293,1306] [2021-10-13 07:11:42,140 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:11:42,155 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 07:11:42,170 WARN L228 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_b53746bf-e8c1-40c7-a0e0-48a68e683296/sv-benchmarks/c/floats-cbmc-regression/float-no-simp6.c[1010,1023] [2021-10-13 07:11:42,174 WARN L228 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_b53746bf-e8c1-40c7-a0e0-48a68e683296/sv-benchmarks/c/floats-cbmc-regression/float-no-simp6.c[1167,1180] [2021-10-13 07:11:42,179 WARN L228 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_b53746bf-e8c1-40c7-a0e0-48a68e683296/sv-benchmarks/c/floats-cbmc-regression/float-no-simp6.c[1293,1306] [2021-10-13 07:11:42,180 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:11:42,211 INFO L208 MainTranslator]: Completed translation [2021-10-13 07:11:42,212 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:11:42 WrapperNode [2021-10-13 07:11:42,212 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 07:11:42,228 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 07:11:42,229 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 07:11:42,229 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 07:11:42,236 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:11:42" (1/1) ... [2021-10-13 07:11:42,251 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:11:42" (1/1) ... [2021-10-13 07:11:42,273 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 07:11:42,274 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 07:11:42,274 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 07:11:42,274 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 07:11:42,282 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:11:42" (1/1) ... [2021-10-13 07:11:42,283 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:11:42" (1/1) ... [2021-10-13 07:11:42,302 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:11:42" (1/1) ... [2021-10-13 07:11:42,303 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:11:42" (1/1) ... [2021-10-13 07:11:42,309 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:11:42" (1/1) ... [2021-10-13 07:11:42,314 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:11:42" (1/1) ... [2021-10-13 07:11:42,319 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:11:42" (1/1) ... [2021-10-13 07:11:42,330 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 07:11:42,331 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 07:11:42,335 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 07:11:42,335 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 07:11:42,336 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:11:42" (1/1) ... [2021-10-13 07:11:42,344 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:11:42,357 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b53746bf-e8c1-40c7-a0e0-48a68e683296/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:11:42,375 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b53746bf-e8c1-40c7-a0e0-48a68e683296/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 07:11:42,411 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b53746bf-e8c1-40c7-a0e0-48a68e683296/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 07:11:42,431 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-13 07:11:42,433 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 07:11:42,433 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 07:11:42,434 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 07:11:43,543 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 07:11:43,543 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-10-13 07:11:43,545 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:11:43 BoogieIcfgContainer [2021-10-13 07:11:43,545 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 07:11:43,547 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 07:11:43,547 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 07:11:43,550 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 07:11:43,550 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:11:41" (1/3) ... [2021-10-13 07:11:43,551 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d235b10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:11:43, skipping insertion in model container [2021-10-13 07:11:43,551 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:11:42" (2/3) ... [2021-10-13 07:11:43,551 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d235b10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:11:43, skipping insertion in model container [2021-10-13 07:11:43,552 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:11:43" (3/3) ... [2021-10-13 07:11:43,553 INFO L111 eAbstractionObserver]: Analyzing ICFG float-no-simp6.c [2021-10-13 07:11:43,558 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 07:11:43,558 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-10-13 07:11:43,604 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 07:11:43,611 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-13 07:11:43,611 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-10-13 07:11:43,624 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 12 states have (on average 1.5) internal successors, (18), 15 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:11:43,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-13 07:11:43,629 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:11:43,630 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-13 07:11:43,631 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:11:43,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:11:43,636 INFO L82 PathProgramCache]: Analyzing trace with hash 925604, now seen corresponding path program 1 times [2021-10-13 07:11:43,648 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:11:43,648 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [490849561] [2021-10-13 07:11:43,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:11:43,649 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:11:43,650 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b53746bf-e8c1-40c7-a0e0-48a68e683296/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:11:43,653 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b53746bf-e8c1-40c7-a0e0-48a68e683296/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:11:43,708 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b53746bf-e8c1-40c7-a0e0-48a68e683296/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-13 07:11:43,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:11:43,824 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 07:11:43,828 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:11:44,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:11:44,009 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:11:44,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:11:44,116 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:11:44,117 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [490849561] [2021-10-13 07:11:44,117 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [490849561] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:11:44,118 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:11:44,118 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-10-13 07:11:44,120 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061850891] [2021-10-13 07:11:44,129 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 07:11:44,129 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:11:44,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 07:11:44,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-13 07:11:44,162 INFO L87 Difference]: Start difference. First operand has 16 states, 12 states have (on average 1.5) internal successors, (18), 15 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 6 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:11:45,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:11:45,053 INFO L93 Difference]: Finished difference Result 27 states and 30 transitions. [2021-10-13 07:11:45,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 07:11:45,056 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2021-10-13 07:11:45,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:11:45,065 INFO L225 Difference]: With dead ends: 27 [2021-10-13 07:11:45,065 INFO L226 Difference]: Without dead ends: 11 [2021-10-13 07:11:45,067 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 111.4ms TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-13 07:11:45,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2021-10-13 07:11:45,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2021-10-13 07:11:45,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 10 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:11:45,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 10 transitions. [2021-10-13 07:11:45,116 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 10 transitions. Word has length 4 [2021-10-13 07:11:45,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:11:45,116 INFO L470 AbstractCegarLoop]: Abstraction has 11 states and 10 transitions. [2021-10-13 07:11:45,117 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:11:45,117 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 10 transitions. [2021-10-13 07:11:45,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-13 07:11:45,118 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:11:45,118 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-13 07:11:45,135 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b53746bf-e8c1-40c7-a0e0-48a68e683296/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-13 07:11:45,324 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b53746bf-e8c1-40c7-a0e0-48a68e683296/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:11:45,326 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:11:45,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:11:45,327 INFO L82 PathProgramCache]: Analyzing trace with hash 889629862, now seen corresponding path program 1 times [2021-10-13 07:11:45,328 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:11:45,328 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1538102484] [2021-10-13 07:11:45,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:11:45,329 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:11:45,329 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b53746bf-e8c1-40c7-a0e0-48a68e683296/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:11:45,331 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b53746bf-e8c1-40c7-a0e0-48a68e683296/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:11:45,373 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b53746bf-e8c1-40c7-a0e0-48a68e683296/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-13 07:11:45,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:11:45,719 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-13 07:11:45,720 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:11:45,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:11:45,833 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:11:45,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:11:45,950 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:11:45,950 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1538102484] [2021-10-13 07:11:45,950 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1538102484] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:11:45,951 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:11:45,951 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-10-13 07:11:45,951 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303917906] [2021-10-13 07:11:45,952 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 07:11:45,953 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:11:45,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 07:11:45,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-13 07:11:45,955 INFO L87 Difference]: Start difference. First operand 11 states and 10 transitions. Second operand has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:11:46,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:11:46,321 INFO L93 Difference]: Finished difference Result 11 states and 10 transitions. [2021-10-13 07:11:46,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 07:11:46,322 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-10-13 07:11:46,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:11:46,323 INFO L225 Difference]: With dead ends: 11 [2021-10-13 07:11:46,323 INFO L226 Difference]: Without dead ends: 9 [2021-10-13 07:11:46,324 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 97.5ms TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-13 07:11:46,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2021-10-13 07:11:46,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2021-10-13 07:11:46,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.0) internal successors, (8), 8 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:11:46,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 8 transitions. [2021-10-13 07:11:46,326 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 8 transitions. Word has length 6 [2021-10-13 07:11:46,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:11:46,327 INFO L470 AbstractCegarLoop]: Abstraction has 9 states and 8 transitions. [2021-10-13 07:11:46,327 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:11:46,327 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 8 transitions. [2021-10-13 07:11:46,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-13 07:11:46,328 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:11:46,328 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:11:46,346 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b53746bf-e8c1-40c7-a0e0-48a68e683296/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-10-13 07:11:46,536 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b53746bf-e8c1-40c7-a0e0-48a68e683296/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:11:46,537 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:11:46,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:11:46,538 INFO L82 PathProgramCache]: Analyzing trace with hash 235930184, now seen corresponding path program 1 times [2021-10-13 07:11:46,538 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:11:46,539 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [461801663] [2021-10-13 07:11:46,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:11:46,539 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:11:46,539 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b53746bf-e8c1-40c7-a0e0-48a68e683296/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:11:46,541 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b53746bf-e8c1-40c7-a0e0-48a68e683296/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:11:46,551 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b53746bf-e8c1-40c7-a0e0-48a68e683296/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-13 07:11:46,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:11:46,872 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 07:11:46,873 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:11:47,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:11:47,004 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:11:47,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:11:47,132 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:11:47,132 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [461801663] [2021-10-13 07:11:47,132 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [461801663] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:11:47,132 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:11:47,133 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-10-13 07:11:47,133 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742275808] [2021-10-13 07:11:47,133 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 07:11:47,133 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:11:47,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 07:11:47,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-13 07:11:47,135 INFO L87 Difference]: Start difference. First operand 9 states and 8 transitions. Second operand has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:11:47,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:11:47,749 INFO L93 Difference]: Finished difference Result 9 states and 8 transitions. [2021-10-13 07:11:47,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 07:11:47,755 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-10-13 07:11:47,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:11:47,755 INFO L225 Difference]: With dead ends: 9 [2021-10-13 07:11:47,755 INFO L226 Difference]: Without dead ends: 0 [2021-10-13 07:11:47,756 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 87.5ms TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-13 07:11:47,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-13 07:11:47,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-13 07:11:47,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:11:47,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-13 07:11:47,757 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 8 [2021-10-13 07:11:47,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:11:47,757 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-13 07:11:47,757 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:11:47,757 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-13 07:11:47,757 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-13 07:11:47,759 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:11:47,760 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:11:47,760 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:11:47,774 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b53746bf-e8c1-40c7-a0e0-48a68e683296/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-13 07:11:47,960 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b53746bf-e8c1-40c7-a0e0-48a68e683296/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:11:47,962 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-13 07:11:47,964 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-13 07:11:47,965 INFO L857 garLoopResultBuilder]: For program point L25(line 25) no Hoare annotation was computed. [2021-10-13 07:11:47,965 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 35) no Hoare annotation was computed. [2021-10-13 07:11:47,965 INFO L857 garLoopResultBuilder]: For program point L25-1(line 25) no Hoare annotation was computed. [2021-10-13 07:11:47,965 INFO L857 garLoopResultBuilder]: For program point L44(line 44) no Hoare annotation was computed. [2021-10-13 07:11:47,965 INFO L857 garLoopResultBuilder]: For program point L44-1(line 44) no Hoare annotation was computed. [2021-10-13 07:11:47,966 INFO L857 garLoopResultBuilder]: For program point L38(lines 1 52) no Hoare annotation was computed. [2021-10-13 07:11:47,966 INFO L857 garLoopResultBuilder]: For program point L5(lines 5 26) no Hoare annotation was computed. [2021-10-13 07:11:47,966 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-13 07:11:47,966 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-13 07:11:47,966 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-13 07:11:47,966 INFO L857 garLoopResultBuilder]: For program point L28(lines 28 36) no Hoare annotation was computed. [2021-10-13 07:11:47,967 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 25) no Hoare annotation was computed. [2021-10-13 07:11:47,967 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 44) no Hoare annotation was computed. [2021-10-13 07:11:47,967 INFO L857 garLoopResultBuilder]: For program point L35(line 35) no Hoare annotation was computed. [2021-10-13 07:11:47,967 INFO L857 garLoopResultBuilder]: For program point L35-1(line 35) no Hoare annotation was computed. [2021-10-13 07:11:47,972 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 07:11:47,975 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 07:11:47 BoogieIcfgContainer [2021-10-13 07:11:47,975 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 07:11:47,976 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 07:11:47,976 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 07:11:47,976 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 07:11:47,977 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:11:43" (3/4) ... [2021-10-13 07:11:47,980 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-13 07:11:47,990 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2021-10-13 07:11:47,990 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-13 07:11:47,990 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-13 07:11:47,990 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-13 07:11:48,036 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b53746bf-e8c1-40c7-a0e0-48a68e683296/bin/utaipan-q2qaUkNPG8/witness.graphml [2021-10-13 07:11:48,041 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 07:11:48,046 INFO L168 Benchmark]: Toolchain (without parser) took 6120.26 ms. Allocated memory is still 86.0 MB. Free memory was 50.9 MB in the beginning and 48.1 MB in the end (delta: 2.8 MB). Peak memory consumption was 5.5 MB. Max. memory is 16.1 GB. [2021-10-13 07:11:48,047 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 86.0 MB. Free memory was 67.2 MB in the beginning and 67.1 MB in the end (delta: 72.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:11:48,048 INFO L168 Benchmark]: CACSL2BoogieTranslator took 289.64 ms. Allocated memory is still 86.0 MB. Free memory was 50.7 MB in the beginning and 70.9 MB in the end (delta: -20.3 MB). Peak memory consumption was 7.9 MB. Max. memory is 16.1 GB. [2021-10-13 07:11:48,049 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.83 ms. Allocated memory is still 86.0 MB. Free memory was 70.9 MB in the beginning and 69.3 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:11:48,049 INFO L168 Benchmark]: Boogie Preprocessor took 56.54 ms. Allocated memory is still 86.0 MB. Free memory was 69.3 MB in the beginning and 68.3 MB in the end (delta: 957.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:11:48,050 INFO L168 Benchmark]: RCFGBuilder took 1214.38 ms. Allocated memory is still 86.0 MB. Free memory was 68.1 MB in the beginning and 58.7 MB in the end (delta: 9.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-13 07:11:48,050 INFO L168 Benchmark]: TraceAbstraction took 4428.43 ms. Allocated memory is still 86.0 MB. Free memory was 58.1 MB in the beginning and 50.5 MB in the end (delta: 7.6 MB). Peak memory consumption was 8.0 MB. Max. memory is 16.1 GB. [2021-10-13 07:11:48,051 INFO L168 Benchmark]: Witness Printer took 65.22 ms. Allocated memory is still 86.0 MB. Free memory was 50.5 MB in the beginning and 48.1 MB in the end (delta: 2.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-13 07:11:48,055 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 86.0 MB. Free memory was 67.2 MB in the beginning and 67.1 MB in the end (delta: 72.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 289.64 ms. Allocated memory is still 86.0 MB. Free memory was 50.7 MB in the beginning and 70.9 MB in the end (delta: -20.3 MB). Peak memory consumption was 7.9 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 44.83 ms. Allocated memory is still 86.0 MB. Free memory was 70.9 MB in the beginning and 69.3 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 56.54 ms. Allocated memory is still 86.0 MB. Free memory was 69.3 MB in the beginning and 68.3 MB in the end (delta: 957.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 1214.38 ms. Allocated memory is still 86.0 MB. Free memory was 68.1 MB in the beginning and 58.7 MB in the end (delta: 9.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4428.43 ms. Allocated memory is still 86.0 MB. Free memory was 58.1 MB in the beginning and 50.5 MB in the end (delta: 7.6 MB). Peak memory consumption was 8.0 MB. Max. memory is 16.1 GB. * Witness Printer took 65.22 ms. Allocated memory is still 86.0 MB. Free memory was 50.5 MB in the beginning and 48.1 MB in the end (delta: 2.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 25]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 35]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 44]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 16 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 4369.2ms, OverallIterations: 3, TraceHistogramMax: 1, EmptinessCheckTime: 10.7ms, AutomataDifference: 1930.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 3.1ms, InitialAbstractionConstructionTime: 9.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 8 SDtfs, 50 SDslu, 0 SDs, 0 SdLazy, 28 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1690.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 30 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 296.4ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=16occurred in iteration=0, InterpolantAutomatonStates: 12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 20.4ms AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 0 LocationsWithAnnotation, 0 PreInvPairs, 0 NumberOfFragments, 0 HoareAnnotationTreeSize, 0 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0ms HoareSimplificationTime, 0 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 36.6ms SsaConstructionTime, 620.1ms SatisfiabilityAnalysisTime, 810.7ms InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 30 ConstructedInterpolants, 0 QuantifiedInterpolants, 180 SizeOfPredicates, 11 NumberOfNonLiveVariables, 92 ConjunctsInSsa, 14 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 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 3 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-10-13 07:11:48,132 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b53746bf-e8c1-40c7-a0e0-48a68e683296/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...