./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 e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d20880c7-4531-48fe-93b7-6edfac19822a/bin/utaipan-9zjyvhn0QE/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d20880c7-4531-48fe-93b7-6edfac19822a/bin/utaipan-9zjyvhn0QE/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d20880c7-4531-48fe-93b7-6edfac19822a/bin/utaipan-9zjyvhn0QE/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d20880c7-4531-48fe-93b7-6edfac19822a/bin/utaipan-9zjyvhn0QE/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_d20880c7-4531-48fe-93b7-6edfac19822a/bin/utaipan-9zjyvhn0QE/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d20880c7-4531-48fe-93b7-6edfac19822a/bin/utaipan-9zjyvhn0QE --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 8e577c29310ee115b251b151455f7420e49d4b5a193d4ed2cde0dcf868c272d0 ........................................................................................................................................................................................................................................................... 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_d20880c7-4531-48fe-93b7-6edfac19822a/bin/utaipan-9zjyvhn0QE/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d20880c7-4531-48fe-93b7-6edfac19822a/bin/utaipan-9zjyvhn0QE/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d20880c7-4531-48fe-93b7-6edfac19822a/bin/utaipan-9zjyvhn0QE/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d20880c7-4531-48fe-93b7-6edfac19822a/bin/utaipan-9zjyvhn0QE/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_d20880c7-4531-48fe-93b7-6edfac19822a/bin/utaipan-9zjyvhn0QE/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d20880c7-4531-48fe-93b7-6edfac19822a/bin/utaipan-9zjyvhn0QE --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 8e577c29310ee115b251b151455f7420e49d4b5a193d4ed2cde0dcf868c272d0 ......................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-24 10:52:04,286 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-24 10:52:04,288 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-24 10:52:04,335 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-24 10:52:04,336 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-24 10:52:04,337 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-24 10:52:04,339 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-24 10:52:04,342 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-24 10:52:04,344 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-24 10:52:04,345 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-24 10:52:04,347 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-24 10:52:04,348 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-24 10:52:04,349 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-24 10:52:04,350 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-24 10:52:04,352 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-24 10:52:04,354 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-24 10:52:04,355 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-24 10:52:04,356 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-24 10:52:04,359 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-24 10:52:04,362 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-24 10:52:04,365 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-24 10:52:04,370 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-24 10:52:04,372 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-24 10:52:04,373 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-24 10:52:04,377 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-24 10:52:04,378 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-24 10:52:04,378 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-24 10:52:04,380 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-24 10:52:04,380 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-24 10:52:04,382 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-24 10:52:04,382 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-24 10:52:04,383 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-24 10:52:04,384 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-24 10:52:04,386 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-24 10:52:04,387 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-24 10:52:04,388 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-24 10:52:04,389 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-24 10:52:04,389 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-24 10:52:04,389 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-24 10:52:04,391 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-24 10:52:04,392 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-24 10:52:04,394 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d20880c7-4531-48fe-93b7-6edfac19822a/bin/utaipan-9zjyvhn0QE/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-24 10:52:04,442 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-24 10:52:04,445 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-24 10:52:04,447 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-24 10:52:04,447 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-24 10:52:04,447 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-24 10:52:04,447 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-24 10:52:04,448 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-24 10:52:04,448 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-24 10:52:04,448 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-24 10:52:04,448 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-24 10:52:04,455 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-24 10:52:04,456 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-24 10:52:04,456 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-24 10:52:04,456 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-24 10:52:04,456 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-24 10:52:04,457 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-24 10:52:04,457 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-24 10:52:04,458 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-24 10:52:04,458 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-24 10:52:04,458 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-24 10:52:04,458 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-24 10:52:04,459 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-24 10:52:04,459 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-24 10:52:04,459 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-24 10:52:04,459 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-24 10:52:04,459 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-24 10:52:04,460 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-24 10:52:04,460 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-24 10:52:04,460 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-24 10:52:04,462 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-24 10:52:04,462 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 10:52:04,462 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-24 10:52:04,463 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-24 10:52:04,463 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-24 10:52:04,463 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-24 10:52:04,463 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-24 10:52:04,464 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-24 10:52:04,464 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-24 10:52:04,464 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-24 10:52:04,464 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_d20880c7-4531-48fe-93b7-6edfac19822a/bin/utaipan-9zjyvhn0QE/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d20880c7-4531-48fe-93b7-6edfac19822a/bin/utaipan-9zjyvhn0QE Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8e577c29310ee115b251b151455f7420e49d4b5a193d4ed2cde0dcf868c272d0 [2021-10-24 10:52:04,736 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-24 10:52:04,764 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-24 10:52:04,767 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-24 10:52:04,768 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-24 10:52:04,769 INFO L275 PluginConnector]: CDTParser initialized [2021-10-24 10:52:04,770 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d20880c7-4531-48fe-93b7-6edfac19822a/bin/utaipan-9zjyvhn0QE/../../sv-benchmarks/c/floats-cbmc-regression/float-no-simp6.c [2021-10-24 10:52:04,842 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d20880c7-4531-48fe-93b7-6edfac19822a/bin/utaipan-9zjyvhn0QE/data/67fb9f3e5/0167098e53a44b2bb5df2a8f9989108f/FLAG0eb195f4f [2021-10-24 10:52:05,339 INFO L306 CDTParser]: Found 1 translation units. [2021-10-24 10:52:05,339 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d20880c7-4531-48fe-93b7-6edfac19822a/sv-benchmarks/c/floats-cbmc-regression/float-no-simp6.c [2021-10-24 10:52:05,347 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d20880c7-4531-48fe-93b7-6edfac19822a/bin/utaipan-9zjyvhn0QE/data/67fb9f3e5/0167098e53a44b2bb5df2a8f9989108f/FLAG0eb195f4f [2021-10-24 10:52:05,708 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d20880c7-4531-48fe-93b7-6edfac19822a/bin/utaipan-9zjyvhn0QE/data/67fb9f3e5/0167098e53a44b2bb5df2a8f9989108f [2021-10-24 10:52:05,712 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-24 10:52:05,716 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-24 10:52:05,733 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-24 10:52:05,734 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-24 10:52:05,737 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-24 10:52:05,738 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:52:05" (1/1) ... [2021-10-24 10:52:05,739 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@fb09ac3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:52:05, skipping insertion in model container [2021-10-24 10:52:05,740 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:52:05" (1/1) ... [2021-10-24 10:52:05,749 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-24 10:52:05,767 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-24 10:52:05,957 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_d20880c7-4531-48fe-93b7-6edfac19822a/sv-benchmarks/c/floats-cbmc-regression/float-no-simp6.c[1010,1023] [2021-10-24 10:52:05,969 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_d20880c7-4531-48fe-93b7-6edfac19822a/sv-benchmarks/c/floats-cbmc-regression/float-no-simp6.c[1167,1180] [2021-10-24 10:52:05,974 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_d20880c7-4531-48fe-93b7-6edfac19822a/sv-benchmarks/c/floats-cbmc-regression/float-no-simp6.c[1293,1306] [2021-10-24 10:52:05,975 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 10:52:05,984 INFO L203 MainTranslator]: Completed pre-run [2021-10-24 10:52:05,998 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_d20880c7-4531-48fe-93b7-6edfac19822a/sv-benchmarks/c/floats-cbmc-regression/float-no-simp6.c[1010,1023] [2021-10-24 10:52:06,002 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_d20880c7-4531-48fe-93b7-6edfac19822a/sv-benchmarks/c/floats-cbmc-regression/float-no-simp6.c[1167,1180] [2021-10-24 10:52:06,005 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_d20880c7-4531-48fe-93b7-6edfac19822a/sv-benchmarks/c/floats-cbmc-regression/float-no-simp6.c[1293,1306] [2021-10-24 10:52:06,006 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 10:52:06,020 INFO L208 MainTranslator]: Completed translation [2021-10-24 10:52:06,020 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:52:06 WrapperNode [2021-10-24 10:52:06,021 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-24 10:52:06,022 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-24 10:52:06,022 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-24 10:52:06,022 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-24 10:52:06,032 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:52:06" (1/1) ... [2021-10-24 10:52:06,040 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:52:06" (1/1) ... [2021-10-24 10:52:06,063 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-24 10:52:06,064 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-24 10:52:06,064 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-24 10:52:06,065 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-24 10:52:06,074 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:52:06" (1/1) ... [2021-10-24 10:52:06,075 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:52:06" (1/1) ... [2021-10-24 10:52:06,077 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:52:06" (1/1) ... [2021-10-24 10:52:06,077 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:52:06" (1/1) ... [2021-10-24 10:52:06,087 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:52:06" (1/1) ... [2021-10-24 10:52:06,092 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:52:06" (1/1) ... [2021-10-24 10:52:06,099 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:52:06" (1/1) ... [2021-10-24 10:52:06,101 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-24 10:52:06,103 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-24 10:52:06,103 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-24 10:52:06,103 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-24 10:52:06,104 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:52:06" (1/1) ... [2021-10-24 10:52:06,111 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 10:52:06,124 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d20880c7-4531-48fe-93b7-6edfac19822a/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 10:52:06,143 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d20880c7-4531-48fe-93b7-6edfac19822a/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-24 10:52:06,154 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d20880c7-4531-48fe-93b7-6edfac19822a/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-24 10:52:06,185 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-24 10:52:06,185 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-24 10:52:06,185 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-24 10:52:06,186 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-24 10:52:06,387 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-24 10:52:06,387 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-10-24 10:52:06,390 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:52:06 BoogieIcfgContainer [2021-10-24 10:52:06,390 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-24 10:52:06,392 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-24 10:52:06,393 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-24 10:52:06,402 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-24 10:52:06,403 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 10:52:05" (1/3) ... [2021-10-24 10:52:06,404 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d7c4f0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:52:06, skipping insertion in model container [2021-10-24 10:52:06,404 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:52:06" (2/3) ... [2021-10-24 10:52:06,404 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d7c4f0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:52:06, skipping insertion in model container [2021-10-24 10:52:06,405 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:52:06" (3/3) ... [2021-10-24 10:52:06,414 INFO L111 eAbstractionObserver]: Analyzing ICFG float-no-simp6.c [2021-10-24 10:52:06,419 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-24 10:52:06,419 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-10-24 10:52:06,466 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-24 10:52:06,473 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, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-24 10:52:06,473 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-10-24 10:52:06,487 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) [2021-10-24 10:52:06,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-24 10:52:06,493 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:52:06,493 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-24 10:52:06,494 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 10:52:06,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:52:06,500 INFO L82 PathProgramCache]: Analyzing trace with hash 60704, now seen corresponding path program 1 times [2021-10-24 10:52:06,510 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 10:52:06,511 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261560195] [2021-10-24 10:52:06,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:52:06,512 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 10:52:06,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-24 10:52:06,599 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-24 10:52:06,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-24 10:52:06,638 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-24 10:52:06,640 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-24 10:52:06,641 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-24 10:52:06,644 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-24 10:52:06,644 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-24 10:52:06,645 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-24 10:52:06,652 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-24 10:52:06,667 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 10:52:06 BoogieIcfgContainer [2021-10-24 10:52:06,668 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-24 10:52:06,669 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-24 10:52:06,669 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-24 10:52:06,669 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-24 10:52:06,670 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:52:06" (3/4) ... [2021-10-24 10:52:06,673 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-24 10:52:06,673 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-24 10:52:06,675 INFO L168 Benchmark]: Toolchain (without parser) took 958.64 ms. Allocated memory is still 117.4 MB. Free memory was 78.3 MB in the beginning and 65.1 MB in the end (delta: 13.2 MB). Peak memory consumption was 9.9 MB. Max. memory is 16.1 GB. [2021-10-24 10:52:06,676 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 117.4 MB. Free memory is still 94.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 10:52:06,677 INFO L168 Benchmark]: CACSL2BoogieTranslator took 287.71 ms. Allocated memory is still 117.4 MB. Free memory was 78.2 MB in the beginning and 90.7 MB in the end (delta: -12.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-24 10:52:06,678 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.79 ms. Allocated memory is still 117.4 MB. Free memory was 90.7 MB in the beginning and 89.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-24 10:52:06,679 INFO L168 Benchmark]: Boogie Preprocessor took 37.18 ms. Allocated memory is still 117.4 MB. Free memory was 89.2 MB in the beginning and 88.1 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 10:52:06,679 INFO L168 Benchmark]: RCFGBuilder took 287.53 ms. Allocated memory is still 117.4 MB. Free memory was 88.1 MB in the beginning and 78.6 MB in the end (delta: 9.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-24 10:52:06,680 INFO L168 Benchmark]: TraceAbstraction took 275.90 ms. Allocated memory is still 117.4 MB. Free memory was 78.1 MB in the beginning and 65.6 MB in the end (delta: 12.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-24 10:52:06,681 INFO L168 Benchmark]: Witness Printer took 4.68 ms. Allocated memory is still 117.4 MB. Free memory is still 65.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 10:52:06,684 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 117.4 MB. Free memory is still 94.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 287.71 ms. Allocated memory is still 117.4 MB. Free memory was 78.2 MB in the beginning and 90.7 MB in the end (delta: -12.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 41.79 ms. Allocated memory is still 117.4 MB. Free memory was 90.7 MB in the beginning and 89.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 37.18 ms. Allocated memory is still 117.4 MB. Free memory was 89.2 MB in the beginning and 88.1 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 287.53 ms. Allocated memory is still 117.4 MB. Free memory was 88.1 MB in the beginning and 78.6 MB in the end (delta: 9.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 275.90 ms. Allocated memory is still 117.4 MB. Free memory was 78.1 MB in the beginning and 65.6 MB in the end (delta: 12.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Witness Printer took 4.68 ms. Allocated memory is still 117.4 MB. Free memory is still 65.1 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: 186.4ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 9.3ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 10.0ms, 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: 6.2ms SsaConstructionTime, 31.2ms 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 [2021-10-24 10:52:06,724 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d20880c7-4531-48fe-93b7-6edfac19822a/bin/utaipan-9zjyvhn0QE/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-e943c26 [2021-10-24 10:52:09,042 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-24 10:52:09,046 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-24 10:52:09,097 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-24 10:52:09,098 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-24 10:52:09,102 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-24 10:52:09,105 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-24 10:52:09,110 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-24 10:52:09,113 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-24 10:52:09,121 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-24 10:52:09,122 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-24 10:52:09,124 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-24 10:52:09,125 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-24 10:52:09,127 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-24 10:52:09,129 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-24 10:52:09,132 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-24 10:52:09,133 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-24 10:52:09,134 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-24 10:52:09,138 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-24 10:52:09,148 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-24 10:52:09,150 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-24 10:52:09,151 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-24 10:52:09,153 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-24 10:52:09,156 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-24 10:52:09,164 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-24 10:52:09,165 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-24 10:52:09,166 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-24 10:52:09,168 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-24 10:52:09,168 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-24 10:52:09,169 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-24 10:52:09,170 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-24 10:52:09,171 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-24 10:52:09,173 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-24 10:52:09,174 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-24 10:52:09,175 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-24 10:52:09,175 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-24 10:52:09,176 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-24 10:52:09,177 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-24 10:52:09,177 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-24 10:52:09,179 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-24 10:52:09,179 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-24 10:52:09,180 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d20880c7-4531-48fe-93b7-6edfac19822a/bin/utaipan-9zjyvhn0QE/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-24 10:52:09,221 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-24 10:52:09,221 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-24 10:52:09,223 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-24 10:52:09,223 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-24 10:52:09,223 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-24 10:52:09,224 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-24 10:52:09,224 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-24 10:52:09,224 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-24 10:52:09,224 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-24 10:52:09,226 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-24 10:52:09,227 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-24 10:52:09,227 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-24 10:52:09,228 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-24 10:52:09,228 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-24 10:52:09,228 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-24 10:52:09,229 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-24 10:52:09,229 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-24 10:52:09,229 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-24 10:52:09,229 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-24 10:52:09,230 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-24 10:52:09,230 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-24 10:52:09,230 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-24 10:52:09,231 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-24 10:52:09,231 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-24 10:52:09,231 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-24 10:52:09,232 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-24 10:52:09,232 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 10:52:09,232 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-24 10:52:09,232 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-24 10:52:09,233 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-24 10:52:09,233 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-24 10:52:09,233 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-24 10:52:09,234 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-24 10:52:09,234 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-24 10:52:09,235 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-24 10:52:09,235 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_d20880c7-4531-48fe-93b7-6edfac19822a/bin/utaipan-9zjyvhn0QE/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d20880c7-4531-48fe-93b7-6edfac19822a/bin/utaipan-9zjyvhn0QE Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8e577c29310ee115b251b151455f7420e49d4b5a193d4ed2cde0dcf868c272d0 [2021-10-24 10:52:09,638 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-24 10:52:09,659 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-24 10:52:09,662 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-24 10:52:09,663 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-24 10:52:09,664 INFO L275 PluginConnector]: CDTParser initialized [2021-10-24 10:52:09,665 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d20880c7-4531-48fe-93b7-6edfac19822a/bin/utaipan-9zjyvhn0QE/../../sv-benchmarks/c/floats-cbmc-regression/float-no-simp6.c [2021-10-24 10:52:09,740 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d20880c7-4531-48fe-93b7-6edfac19822a/bin/utaipan-9zjyvhn0QE/data/47d7c184a/21ee72db687f4a3c9b08edb676eb28ff/FLAG6f3f27e37 [2021-10-24 10:52:10,362 INFO L306 CDTParser]: Found 1 translation units. [2021-10-24 10:52:10,363 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d20880c7-4531-48fe-93b7-6edfac19822a/sv-benchmarks/c/floats-cbmc-regression/float-no-simp6.c [2021-10-24 10:52:10,370 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d20880c7-4531-48fe-93b7-6edfac19822a/bin/utaipan-9zjyvhn0QE/data/47d7c184a/21ee72db687f4a3c9b08edb676eb28ff/FLAG6f3f27e37 [2021-10-24 10:52:10,697 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d20880c7-4531-48fe-93b7-6edfac19822a/bin/utaipan-9zjyvhn0QE/data/47d7c184a/21ee72db687f4a3c9b08edb676eb28ff [2021-10-24 10:52:10,701 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-24 10:52:10,704 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-24 10:52:10,708 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-24 10:52:10,708 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-24 10:52:10,713 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-24 10:52:10,713 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:52:10" (1/1) ... [2021-10-24 10:52:10,715 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ddc0542 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:52:10, skipping insertion in model container [2021-10-24 10:52:10,715 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:52:10" (1/1) ... [2021-10-24 10:52:10,725 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-24 10:52:10,743 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-24 10:52:10,928 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_d20880c7-4531-48fe-93b7-6edfac19822a/sv-benchmarks/c/floats-cbmc-regression/float-no-simp6.c[1010,1023] [2021-10-24 10:52:10,943 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_d20880c7-4531-48fe-93b7-6edfac19822a/sv-benchmarks/c/floats-cbmc-regression/float-no-simp6.c[1167,1180] [2021-10-24 10:52:10,952 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_d20880c7-4531-48fe-93b7-6edfac19822a/sv-benchmarks/c/floats-cbmc-regression/float-no-simp6.c[1293,1306] [2021-10-24 10:52:10,953 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 10:52:10,968 INFO L203 MainTranslator]: Completed pre-run [2021-10-24 10:52:10,987 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_d20880c7-4531-48fe-93b7-6edfac19822a/sv-benchmarks/c/floats-cbmc-regression/float-no-simp6.c[1010,1023] [2021-10-24 10:52:10,992 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_d20880c7-4531-48fe-93b7-6edfac19822a/sv-benchmarks/c/floats-cbmc-regression/float-no-simp6.c[1167,1180] [2021-10-24 10:52:10,996 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_d20880c7-4531-48fe-93b7-6edfac19822a/sv-benchmarks/c/floats-cbmc-regression/float-no-simp6.c[1293,1306] [2021-10-24 10:52:10,997 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 10:52:11,013 INFO L208 MainTranslator]: Completed translation [2021-10-24 10:52:11,014 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:52:11 WrapperNode [2021-10-24 10:52:11,014 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-24 10:52:11,015 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-24 10:52:11,015 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-24 10:52:11,015 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-24 10:52:11,024 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:52:11" (1/1) ... [2021-10-24 10:52:11,033 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:52:11" (1/1) ... [2021-10-24 10:52:11,053 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-24 10:52:11,054 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-24 10:52:11,054 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-24 10:52:11,054 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-24 10:52:11,063 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:52:11" (1/1) ... [2021-10-24 10:52:11,064 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:52:11" (1/1) ... [2021-10-24 10:52:11,067 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:52:11" (1/1) ... [2021-10-24 10:52:11,068 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:52:11" (1/1) ... [2021-10-24 10:52:11,076 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:52:11" (1/1) ... [2021-10-24 10:52:11,078 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:52:11" (1/1) ... [2021-10-24 10:52:11,080 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:52:11" (1/1) ... [2021-10-24 10:52:11,084 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-24 10:52:11,085 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-24 10:52:11,085 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-24 10:52:11,085 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-24 10:52:11,086 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:52:11" (1/1) ... [2021-10-24 10:52:11,095 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 10:52:11,111 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d20880c7-4531-48fe-93b7-6edfac19822a/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 10:52:11,127 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d20880c7-4531-48fe-93b7-6edfac19822a/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-24 10:52:11,154 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d20880c7-4531-48fe-93b7-6edfac19822a/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-24 10:52:11,212 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-24 10:52:11,212 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-24 10:52:11,213 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-24 10:52:11,213 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-24 10:52:12,659 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-24 10:52:12,659 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-10-24 10:52:12,661 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:52:12 BoogieIcfgContainer [2021-10-24 10:52:12,661 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-24 10:52:12,663 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-24 10:52:12,663 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-24 10:52:12,666 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-24 10:52:12,667 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 10:52:10" (1/3) ... [2021-10-24 10:52:12,667 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e8539a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:52:12, skipping insertion in model container [2021-10-24 10:52:12,668 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:52:11" (2/3) ... [2021-10-24 10:52:12,668 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e8539a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:52:12, skipping insertion in model container [2021-10-24 10:52:12,668 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:52:12" (3/3) ... [2021-10-24 10:52:12,670 INFO L111 eAbstractionObserver]: Analyzing ICFG float-no-simp6.c [2021-10-24 10:52:12,676 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-24 10:52:12,676 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-10-24 10:52:12,727 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-24 10:52:12,735 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, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-24 10:52:12,735 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-10-24 10:52:12,747 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) [2021-10-24 10:52:12,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-24 10:52:12,752 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:52:12,753 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-24 10:52:12,754 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 10:52:12,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:52:12,760 INFO L82 PathProgramCache]: Analyzing trace with hash 925604, now seen corresponding path program 1 times [2021-10-24 10:52:12,772 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 10:52:12,773 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [554267866] [2021-10-24 10:52:12,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:52:12,774 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 10:52:12,775 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d20880c7-4531-48fe-93b7-6edfac19822a/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 10:52:12,794 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d20880c7-4531-48fe-93b7-6edfac19822a/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 10:52:12,795 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d20880c7-4531-48fe-93b7-6edfac19822a/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-24 10:52:12,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:52:12,921 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-24 10:52:12,926 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:52:13,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:52:13,060 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:52:13,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:52:13,201 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 10:52:13,202 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [554267866] [2021-10-24 10:52:13,202 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [554267866] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 10:52:13,203 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:52:13,203 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-10-24 10:52:13,205 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716295961] [2021-10-24 10:52:13,211 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-24 10:52:13,212 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 10:52:13,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-24 10:52:13,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-24 10:52:13,232 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) [2021-10-24 10:52:14,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:52:14,134 INFO L93 Difference]: Finished difference Result 27 states and 30 transitions. [2021-10-24 10:52:14,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-24 10:52:14,136 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 [2021-10-24 10:52:14,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:52:14,143 INFO L225 Difference]: With dead ends: 27 [2021-10-24 10:52:14,144 INFO L226 Difference]: Without dead ends: 11 [2021-10-24 10:52:14,146 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 133.7ms TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-24 10:52:14,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2021-10-24 10:52:14,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2021-10-24 10:52:14,171 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) [2021-10-24 10:52:14,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 10 transitions. [2021-10-24 10:52:14,173 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 10 transitions. Word has length 4 [2021-10-24 10:52:14,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:52:14,173 INFO L470 AbstractCegarLoop]: Abstraction has 11 states and 10 transitions. [2021-10-24 10:52:14,174 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) [2021-10-24 10:52:14,174 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 10 transitions. [2021-10-24 10:52:14,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-24 10:52:14,174 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:52:14,175 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-24 10:52:14,186 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d20880c7-4531-48fe-93b7-6edfac19822a/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-10-24 10:52:14,375 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d20880c7-4531-48fe-93b7-6edfac19822a/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 10:52:14,376 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 10:52:14,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:52:14,377 INFO L82 PathProgramCache]: Analyzing trace with hash 889629862, now seen corresponding path program 1 times [2021-10-24 10:52:14,378 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 10:52:14,379 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1105794982] [2021-10-24 10:52:14,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:52:14,379 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 10:52:14,380 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d20880c7-4531-48fe-93b7-6edfac19822a/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 10:52:14,382 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d20880c7-4531-48fe-93b7-6edfac19822a/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 10:52:14,391 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d20880c7-4531-48fe-93b7-6edfac19822a/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-24 10:52:14,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:52:14,803 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-24 10:52:14,804 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:52:14,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:52:14,917 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:52:15,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:52:15,055 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 10:52:15,056 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1105794982] [2021-10-24 10:52:15,056 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1105794982] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 10:52:15,056 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:52:15,056 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-10-24 10:52:15,057 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865327627] [2021-10-24 10:52:15,058 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-24 10:52:15,059 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 10:52:15,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-24 10:52:15,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-24 10:52:15,061 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) [2021-10-24 10:52:15,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:52:15,406 INFO L93 Difference]: Finished difference Result 11 states and 10 transitions. [2021-10-24 10:52:15,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-24 10:52:15,408 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 [2021-10-24 10:52:15,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:52:15,408 INFO L225 Difference]: With dead ends: 11 [2021-10-24 10:52:15,409 INFO L226 Difference]: Without dead ends: 9 [2021-10-24 10:52:15,409 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 102.1ms TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-24 10:52:15,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2021-10-24 10:52:15,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2021-10-24 10:52:15,411 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) [2021-10-24 10:52:15,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 8 transitions. [2021-10-24 10:52:15,412 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 8 transitions. Word has length 6 [2021-10-24 10:52:15,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:52:15,413 INFO L470 AbstractCegarLoop]: Abstraction has 9 states and 8 transitions. [2021-10-24 10:52:15,413 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) [2021-10-24 10:52:15,414 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 8 transitions. [2021-10-24 10:52:15,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-24 10:52:15,414 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:52:15,414 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:52:15,433 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d20880c7-4531-48fe-93b7-6edfac19822a/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-24 10:52:15,616 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d20880c7-4531-48fe-93b7-6edfac19822a/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 10:52:15,617 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 10:52:15,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:52:15,617 INFO L82 PathProgramCache]: Analyzing trace with hash 235930184, now seen corresponding path program 1 times [2021-10-24 10:52:15,618 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-24 10:52:15,618 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2109681012] [2021-10-24 10:52:15,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:52:15,619 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-24 10:52:15,619 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d20880c7-4531-48fe-93b7-6edfac19822a/bin/utaipan-9zjyvhn0QE/mathsat [2021-10-24 10:52:15,623 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d20880c7-4531-48fe-93b7-6edfac19822a/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-24 10:52:15,625 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d20880c7-4531-48fe-93b7-6edfac19822a/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-24 10:52:15,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:52:15,959 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-24 10:52:15,961 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:52:16,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:52:16,085 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:52:16,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:52:16,246 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-24 10:52:16,246 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2109681012] [2021-10-24 10:52:16,246 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2109681012] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 10:52:16,246 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:52:16,246 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-10-24 10:52:16,247 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134789173] [2021-10-24 10:52:16,247 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-24 10:52:16,247 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-24 10:52:16,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-24 10:52:16,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-24 10:52:16,249 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) [2021-10-24 10:52:16,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:52:16,942 INFO L93 Difference]: Finished difference Result 9 states and 8 transitions. [2021-10-24 10:52:16,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-24 10:52:16,949 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 [2021-10-24 10:52:16,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:52:16,950 INFO L225 Difference]: With dead ends: 9 [2021-10-24 10:52:16,950 INFO L226 Difference]: Without dead ends: 0 [2021-10-24 10:52:16,951 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 102.8ms TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-24 10:52:16,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-24 10:52:16,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-24 10:52:16,952 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) [2021-10-24 10:52:16,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-24 10:52:16,952 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 8 [2021-10-24 10:52:16,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:52:16,952 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-24 10:52:16,953 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) [2021-10-24 10:52:16,953 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-24 10:52:16,953 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-24 10:52:16,956 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-24 10:52:16,957 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-24 10:52:16,958 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-24 10:52:16,998 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d20880c7-4531-48fe-93b7-6edfac19822a/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-24 10:52:17,177 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d20880c7-4531-48fe-93b7-6edfac19822a/bin/utaipan-9zjyvhn0QE/mathsat -unsat_core_generation=3 [2021-10-24 10:52:17,179 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-24 10:52:17,182 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-24 10:52:17,183 INFO L857 garLoopResultBuilder]: For program point L25(line 25) no Hoare annotation was computed. [2021-10-24 10:52:17,183 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 35) no Hoare annotation was computed. [2021-10-24 10:52:17,183 INFO L857 garLoopResultBuilder]: For program point L25-1(line 25) no Hoare annotation was computed. [2021-10-24 10:52:17,184 INFO L857 garLoopResultBuilder]: For program point L44(line 44) no Hoare annotation was computed. [2021-10-24 10:52:17,184 INFO L857 garLoopResultBuilder]: For program point L44-1(line 44) no Hoare annotation was computed. [2021-10-24 10:52:17,184 INFO L857 garLoopResultBuilder]: For program point L38(lines 1 52) no Hoare annotation was computed. [2021-10-24 10:52:17,184 INFO L857 garLoopResultBuilder]: For program point L5(lines 5 26) no Hoare annotation was computed. [2021-10-24 10:52:17,185 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-24 10:52:17,185 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-24 10:52:17,185 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-24 10:52:17,185 INFO L857 garLoopResultBuilder]: For program point L28(lines 28 36) no Hoare annotation was computed. [2021-10-24 10:52:17,186 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 25) no Hoare annotation was computed. [2021-10-24 10:52:17,186 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 44) no Hoare annotation was computed. [2021-10-24 10:52:17,186 INFO L857 garLoopResultBuilder]: For program point L35(line 35) no Hoare annotation was computed. [2021-10-24 10:52:17,187 INFO L857 garLoopResultBuilder]: For program point L35-1(line 35) no Hoare annotation was computed. [2021-10-24 10:52:17,191 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-24 10:52:17,195 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 10:52:17 BoogieIcfgContainer [2021-10-24 10:52:17,195 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-24 10:52:17,196 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-24 10:52:17,196 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-24 10:52:17,196 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-24 10:52:17,199 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:52:12" (3/4) ... [2021-10-24 10:52:17,203 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-24 10:52:17,218 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2021-10-24 10:52:17,219 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-24 10:52:17,219 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-24 10:52:17,220 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-24 10:52:17,279 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d20880c7-4531-48fe-93b7-6edfac19822a/bin/utaipan-9zjyvhn0QE/witness.graphml [2021-10-24 10:52:17,287 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-24 10:52:17,290 INFO L168 Benchmark]: Toolchain (without parser) took 6584.86 ms. Allocated memory was 67.1 MB in the beginning and 107.0 MB in the end (delta: 39.8 MB). Free memory was 49.2 MB in the beginning and 61.4 MB in the end (delta: -12.2 MB). Peak memory consumption was 30.0 MB. Max. memory is 16.1 GB. [2021-10-24 10:52:17,292 INFO L168 Benchmark]: CDTParser took 0.52 ms. Allocated memory is still 67.1 MB. Free memory was 48.6 MB in the beginning and 48.5 MB in the end (delta: 54.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 10:52:17,293 INFO L168 Benchmark]: CACSL2BoogieTranslator took 306.35 ms. Allocated memory is still 67.1 MB. Free memory was 49.0 MB in the beginning and 36.9 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-24 10:52:17,294 INFO L168 Benchmark]: Boogie Procedure Inliner took 38.08 ms. Allocated memory is still 67.1 MB. Free memory was 36.9 MB in the beginning and 35.4 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-24 10:52:17,294 INFO L168 Benchmark]: Boogie Preprocessor took 30.09 ms. Allocated memory is still 67.1 MB. Free memory was 35.4 MB in the beginning and 34.3 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 10:52:17,295 INFO L168 Benchmark]: RCFGBuilder took 1576.24 ms. Allocated memory is still 67.1 MB. Free memory was 34.3 MB in the beginning and 43.9 MB in the end (delta: -9.6 MB). Peak memory consumption was 8.1 MB. Max. memory is 16.1 GB. [2021-10-24 10:52:17,296 INFO L168 Benchmark]: TraceAbstraction took 4532.29 ms. Allocated memory was 67.1 MB in the beginning and 107.0 MB in the end (delta: 39.8 MB). Free memory was 43.4 MB in the beginning and 63.6 MB in the end (delta: -20.2 MB). Peak memory consumption was 19.8 MB. Max. memory is 16.1 GB. [2021-10-24 10:52:17,300 INFO L168 Benchmark]: Witness Printer took 91.56 ms. Allocated memory is still 107.0 MB. Free memory was 63.6 MB in the beginning and 61.4 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-24 10:52:17,303 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.52 ms. Allocated memory is still 67.1 MB. Free memory was 48.6 MB in the beginning and 48.5 MB in the end (delta: 54.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 306.35 ms. Allocated memory is still 67.1 MB. Free memory was 49.0 MB in the beginning and 36.9 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 38.08 ms. Allocated memory is still 67.1 MB. Free memory was 36.9 MB in the beginning and 35.4 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 30.09 ms. Allocated memory is still 67.1 MB. Free memory was 35.4 MB in the beginning and 34.3 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 1576.24 ms. Allocated memory is still 67.1 MB. Free memory was 34.3 MB in the beginning and 43.9 MB in the end (delta: -9.6 MB). Peak memory consumption was 8.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4532.29 ms. Allocated memory was 67.1 MB in the beginning and 107.0 MB in the end (delta: 39.8 MB). Free memory was 43.4 MB in the beginning and 63.6 MB in the end (delta: -20.2 MB). Peak memory consumption was 19.8 MB. Max. memory is 16.1 GB. * Witness Printer took 91.56 ms. Allocated memory is still 107.0 MB. Free memory was 63.6 MB in the beginning and 61.4 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 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: 4465.1ms, OverallIterations: 3, TraceHistogramMax: 1, EmptinessCheckTime: 9.9ms, AutomataDifference: 1987.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 3.9ms, InitialAbstractionConstructionTime: 8.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 8 SDtfs, 50 SDslu, 0 SDs, 0 SdLazy, 28 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1751.1ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 30 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 338.7ms 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: 17.2ms 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: 23.8ms SsaConstructionTime, 728.9ms SatisfiabilityAnalysisTime, 851.2ms 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! [2021-10-24 10:52:17,384 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d20880c7-4531-48fe-93b7-6edfac19822a/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...