./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/floats-cbmc-regression/float-no-simp3.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e77c044 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9edf6f0-18b9-4c3c-83c8-e97f96b72d73/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9edf6f0-18b9-4c3c-83c8-e97f96b72d73/bin/utaipan-q2qaUkNPG8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9edf6f0-18b9-4c3c-83c8-e97f96b72d73/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9edf6f0-18b9-4c3c-83c8-e97f96b72d73/bin/utaipan-q2qaUkNPG8/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-cbmc-regression/float-no-simp3.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9edf6f0-18b9-4c3c-83c8-e97f96b72d73/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9edf6f0-18b9-4c3c-83c8-e97f96b72d73/bin/utaipan-q2qaUkNPG8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 80f4c7cd3af7d4ef31d93e6369e6026704f12fbd .............................................................................................................................................................................................................................................. 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_b9edf6f0-18b9-4c3c-83c8-e97f96b72d73/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9edf6f0-18b9-4c3c-83c8-e97f96b72d73/bin/utaipan-q2qaUkNPG8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9edf6f0-18b9-4c3c-83c8-e97f96b72d73/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9edf6f0-18b9-4c3c-83c8-e97f96b72d73/bin/utaipan-q2qaUkNPG8/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-cbmc-regression/float-no-simp3.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9edf6f0-18b9-4c3c-83c8-e97f96b72d73/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9edf6f0-18b9-4c3c-83c8-e97f96b72d73/bin/utaipan-q2qaUkNPG8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 80f4c7cd3af7d4ef31d93e6369e6026704f12fbd ..................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 07:58:43,293 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 07:58:43,298 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 07:58:43,373 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 07:58:43,373 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 07:58:43,379 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 07:58:43,382 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 07:58:43,387 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 07:58:43,391 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 07:58:43,398 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 07:58:43,400 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 07:58:43,402 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 07:58:43,403 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 07:58:43,406 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 07:58:43,409 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 07:58:43,419 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 07:58:43,422 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 07:58:43,423 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 07:58:43,427 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 07:58:43,437 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 07:58:43,440 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 07:58:43,447 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 07:58:43,450 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 07:58:43,451 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 07:58:43,460 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 07:58:43,464 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 07:58:43,465 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 07:58:43,468 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 07:58:43,469 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 07:58:43,471 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 07:58:43,471 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 07:58:43,473 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 07:58:43,475 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 07:58:43,477 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 07:58:43,480 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 07:58:43,480 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 07:58:43,481 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 07:58:43,482 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 07:58:43,482 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 07:58:43,483 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 07:58:43,484 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 07:58:43,486 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9edf6f0-18b9-4c3c-83c8-e97f96b72d73/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-13 07:58:43,547 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 07:58:43,547 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 07:58:43,549 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 07:58:43,550 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 07:58:43,550 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 07:58:43,550 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 07:58:43,551 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-13 07:58:43,551 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 07:58:43,551 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 07:58:43,551 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-13 07:58:43,553 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-13 07:58:43,553 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 07:58:43,554 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-13 07:58:43,554 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-13 07:58:43,554 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-13 07:58:43,555 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 07:58:43,556 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 07:58:43,556 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 07:58:43,556 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 07:58:43,557 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 07:58:43,557 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 07:58:43,557 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 07:58:43,557 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 07:58:43,558 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 07:58:43,558 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 07:58:43,558 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 07:58:43,559 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 07:58:43,559 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 07:58:43,559 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 07:58:43,562 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 07:58:43,563 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:58:43,563 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 07:58:43,563 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 07:58:43,564 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 07:58:43,564 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-13 07:58:43,564 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 07:58:43,565 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 07:58:43,565 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 07:58:43,565 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 07:58:43,565 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_b9edf6f0-18b9-4c3c-83c8-e97f96b72d73/bin/utaipan-q2qaUkNPG8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9edf6f0-18b9-4c3c-83c8-e97f96b72d73/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 80f4c7cd3af7d4ef31d93e6369e6026704f12fbd [2021-10-13 07:58:43,982 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 07:58:44,010 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 07:58:44,014 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 07:58:44,016 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 07:58:44,017 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 07:58:44,018 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9edf6f0-18b9-4c3c-83c8-e97f96b72d73/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/floats-cbmc-regression/float-no-simp3.c [2021-10-13 07:58:44,104 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9edf6f0-18b9-4c3c-83c8-e97f96b72d73/bin/utaipan-q2qaUkNPG8/data/4dbe28580/e55b8c1ee9d6440f8966f9e0d35ac13f/FLAGbae4c3634 [2021-10-13 07:58:44,822 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 07:58:44,823 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9edf6f0-18b9-4c3c-83c8-e97f96b72d73/sv-benchmarks/c/floats-cbmc-regression/float-no-simp3.c [2021-10-13 07:58:44,842 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9edf6f0-18b9-4c3c-83c8-e97f96b72d73/bin/utaipan-q2qaUkNPG8/data/4dbe28580/e55b8c1ee9d6440f8966f9e0d35ac13f/FLAGbae4c3634 [2021-10-13 07:58:45,184 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9edf6f0-18b9-4c3c-83c8-e97f96b72d73/bin/utaipan-q2qaUkNPG8/data/4dbe28580/e55b8c1ee9d6440f8966f9e0d35ac13f [2021-10-13 07:58:45,191 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 07:58:45,194 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 07:58:45,201 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 07:58:45,201 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 07:58:45,207 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 07:58:45,208 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:58:45" (1/1) ... [2021-10-13 07:58:45,211 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32046e3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:58:45, skipping insertion in model container [2021-10-13 07:58:45,212 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:58:45" (1/1) ... [2021-10-13 07:58:45,222 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 07:58:45,238 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 07:58:45,513 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_b9edf6f0-18b9-4c3c-83c8-e97f96b72d73/sv-benchmarks/c/floats-cbmc-regression/float-no-simp3.c[358,371] [2021-10-13 07:58:45,518 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:58:45,529 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 07:58:45,547 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_b9edf6f0-18b9-4c3c-83c8-e97f96b72d73/sv-benchmarks/c/floats-cbmc-regression/float-no-simp3.c[358,371] [2021-10-13 07:58:45,548 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:58:45,565 INFO L208 MainTranslator]: Completed translation [2021-10-13 07:58:45,566 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:58:45 WrapperNode [2021-10-13 07:58:45,566 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 07:58:45,568 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 07:58:45,568 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 07:58:45,568 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 07:58:45,579 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:58:45" (1/1) ... [2021-10-13 07:58:45,588 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:58:45" (1/1) ... [2021-10-13 07:58:45,609 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 07:58:45,610 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 07:58:45,611 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 07:58:45,611 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 07:58:45,621 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:58:45" (1/1) ... [2021-10-13 07:58:45,622 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:58:45" (1/1) ... [2021-10-13 07:58:45,623 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:58:45" (1/1) ... [2021-10-13 07:58:45,624 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:58:45" (1/1) ... [2021-10-13 07:58:45,628 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:58:45" (1/1) ... [2021-10-13 07:58:45,630 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:58:45" (1/1) ... [2021-10-13 07:58:45,631 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:58:45" (1/1) ... [2021-10-13 07:58:45,633 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 07:58:45,635 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 07:58:45,635 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 07:58:45,635 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 07:58:45,636 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:58:45" (1/1) ... [2021-10-13 07:58:45,648 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:58:45,661 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9edf6f0-18b9-4c3c-83c8-e97f96b72d73/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:58:45,674 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9edf6f0-18b9-4c3c-83c8-e97f96b72d73/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 07:58:45,704 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9edf6f0-18b9-4c3c-83c8-e97f96b72d73/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 07:58:45,742 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 07:58:45,742 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 07:58:45,743 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-13 07:58:45,743 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 07:58:46,064 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 07:58:46,064 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-10-13 07:58:46,067 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:58:46 BoogieIcfgContainer [2021-10-13 07:58:46,067 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 07:58:46,070 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 07:58:46,070 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 07:58:46,077 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 07:58:46,078 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:58:45" (1/3) ... [2021-10-13 07:58:46,079 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45cb8b1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:58:46, skipping insertion in model container [2021-10-13 07:58:46,079 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:58:45" (2/3) ... [2021-10-13 07:58:46,080 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45cb8b1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:58:46, skipping insertion in model container [2021-10-13 07:58:46,081 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:58:46" (3/3) ... [2021-10-13 07:58:46,083 INFO L111 eAbstractionObserver]: Analyzing ICFG float-no-simp3.c [2021-10-13 07:58:46,091 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 07:58:46,092 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-13 07:58:46,168 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 07:58:46,182 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-13 07:58:46,183 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-13 07:58:46,204 INFO L276 IsEmpty]: Start isEmpty. Operand has 6 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:58:46,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-13 07:58:46,211 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:58:46,212 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-13 07:58:46,213 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:58:46,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:58:46,223 INFO L82 PathProgramCache]: Analyzing trace with hash 42445, now seen corresponding path program 1 times [2021-10-13 07:58:46,235 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:58:46,236 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650382808] [2021-10-13 07:58:46,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:58:46,238 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:58:46,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 07:58:46,401 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 07:58:46,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 07:58:46,477 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-13 07:58:46,493 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-13 07:58:46,495 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:58:46,498 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-13 07:58:46,513 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 07:58:46,540 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 07:58:46 BoogieIcfgContainer [2021-10-13 07:58:46,540 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 07:58:46,544 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 07:58:46,544 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 07:58:46,545 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 07:58:46,546 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:58:46" (3/4) ... [2021-10-13 07:58:46,550 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-13 07:58:46,550 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 07:58:46,555 INFO L168 Benchmark]: Toolchain (without parser) took 1357.85 ms. Allocated memory is still 107.0 MB. Free memory was 65.2 MB in the beginning and 57.1 MB in the end (delta: 8.1 MB). Peak memory consumption was 6.2 MB. Max. memory is 16.1 GB. [2021-10-13 07:58:46,556 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 107.0 MB. Free memory is still 81.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:58:46,558 INFO L168 Benchmark]: CACSL2BoogieTranslator took 365.85 ms. Allocated memory is still 107.0 MB. Free memory was 65.0 MB in the beginning and 81.9 MB in the end (delta: -16.9 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-13 07:58:46,560 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.72 ms. Allocated memory is still 107.0 MB. Free memory was 81.9 MB in the beginning and 80.5 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:58:46,562 INFO L168 Benchmark]: Boogie Preprocessor took 23.39 ms. Allocated memory is still 107.0 MB. Free memory was 80.5 MB in the beginning and 79.7 MB in the end (delta: 814.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:58:46,563 INFO L168 Benchmark]: RCFGBuilder took 433.14 ms. Allocated memory is still 107.0 MB. Free memory was 79.7 MB in the beginning and 70.1 MB in the end (delta: 9.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-13 07:58:46,565 INFO L168 Benchmark]: TraceAbstraction took 470.36 ms. Allocated memory is still 107.0 MB. Free memory was 69.7 MB in the beginning and 57.5 MB in the end (delta: 12.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-13 07:58:46,573 INFO L168 Benchmark]: Witness Printer took 6.64 ms. Allocated memory is still 107.0 MB. Free memory was 57.5 MB in the beginning and 57.1 MB in the end (delta: 405.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:58:46,583 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34 ms. Allocated memory is still 107.0 MB. Free memory is still 81.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 365.85 ms. Allocated memory is still 107.0 MB. Free memory was 65.0 MB in the beginning and 81.9 MB in the end (delta: -16.9 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 41.72 ms. Allocated memory is still 107.0 MB. Free memory was 81.9 MB in the beginning and 80.5 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 23.39 ms. Allocated memory is still 107.0 MB. Free memory was 80.5 MB in the beginning and 79.7 MB in the end (delta: 814.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 433.14 ms. Allocated memory is still 107.0 MB. Free memory was 79.7 MB in the beginning and 70.1 MB in the end (delta: 9.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 470.36 ms. Allocated memory is still 107.0 MB. Free memory was 69.7 MB in the beginning and 57.5 MB in the end (delta: 12.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Witness Printer took 6.64 ms. Allocated memory is still 107.0 MB. Free memory was 57.5 MB in the beginning and 57.1 MB in the end (delta: 405.4 kB). 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: 10]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of to_int at line 10, overapproximation of someBinaryArithmeticFLOAToperation at line 8. Possible FailurePath: [L8] float fs1=2.0f/6.0f; [L9] float fs2=fs1*6.0f; [L10] COND TRUE !((int)fs2==2) [L10] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 6 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 345.1ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 12.6ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 15.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=6occurred 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: 19.9ms SsaConstructionTime, 57.3ms SatisfiabilityAnalysisTime, 0.0ms InterpolantComputationTime, 3 NumberOfCodeBlocks, 3 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-10-13 07:58:46,660 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9edf6f0-18b9-4c3c-83c8-e97f96b72d73/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 07:58:49,812 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 07:58:49,815 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 07:58:49,880 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 07:58:49,881 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 07:58:49,887 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 07:58:49,889 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 07:58:49,895 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 07:58:49,900 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 07:58:49,913 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 07:58:49,915 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 07:58:49,917 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 07:58:49,917 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 07:58:49,919 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 07:58:49,921 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 07:58:49,923 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 07:58:49,924 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 07:58:49,925 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 07:58:49,928 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 07:58:49,939 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 07:58:49,941 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 07:58:49,944 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 07:58:49,951 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 07:58:49,954 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 07:58:49,966 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 07:58:49,966 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 07:58:49,967 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 07:58:49,968 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 07:58:49,969 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 07:58:49,970 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 07:58:49,971 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 07:58:49,972 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 07:58:49,973 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 07:58:49,974 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 07:58:49,976 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 07:58:49,980 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 07:58:49,982 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 07:58:49,982 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 07:58:49,982 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 07:58:49,985 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 07:58:49,986 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 07:58:49,993 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9edf6f0-18b9-4c3c-83c8-e97f96b72d73/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-13 07:58:50,051 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 07:58:50,051 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 07:58:50,053 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 07:58:50,053 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 07:58:50,054 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 07:58:50,054 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 07:58:50,054 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 07:58:50,054 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 07:58:50,055 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 07:58:50,056 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 07:58:50,058 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 07:58:50,058 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 07:58:50,058 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 07:58:50,058 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 07:58:50,059 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 07:58:50,059 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 07:58:50,059 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 07:58:50,059 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-13 07:58:50,060 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-13 07:58:50,060 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 07:58:50,060 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 07:58:50,060 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 07:58:50,061 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 07:58:50,061 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 07:58:50,061 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 07:58:50,061 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 07:58:50,062 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:58:50,062 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 07:58:50,062 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 07:58:50,062 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 07:58:50,063 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-13 07:58:50,063 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-13 07:58:50,063 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 07:58:50,063 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 07:58:50,064 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 07:58:50,064 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_b9edf6f0-18b9-4c3c-83c8-e97f96b72d73/bin/utaipan-q2qaUkNPG8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9edf6f0-18b9-4c3c-83c8-e97f96b72d73/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 80f4c7cd3af7d4ef31d93e6369e6026704f12fbd [2021-10-13 07:58:50,551 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 07:58:50,579 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 07:58:50,582 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 07:58:50,584 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 07:58:50,585 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 07:58:50,586 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9edf6f0-18b9-4c3c-83c8-e97f96b72d73/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/floats-cbmc-regression/float-no-simp3.c [2021-10-13 07:58:50,664 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9edf6f0-18b9-4c3c-83c8-e97f96b72d73/bin/utaipan-q2qaUkNPG8/data/eabe63480/0f7a817465ea47439d915b62d8d8960d/FLAGa6d915f5b [2021-10-13 07:58:51,353 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 07:58:51,355 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9edf6f0-18b9-4c3c-83c8-e97f96b72d73/sv-benchmarks/c/floats-cbmc-regression/float-no-simp3.c [2021-10-13 07:58:51,365 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9edf6f0-18b9-4c3c-83c8-e97f96b72d73/bin/utaipan-q2qaUkNPG8/data/eabe63480/0f7a817465ea47439d915b62d8d8960d/FLAGa6d915f5b [2021-10-13 07:58:51,687 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9edf6f0-18b9-4c3c-83c8-e97f96b72d73/bin/utaipan-q2qaUkNPG8/data/eabe63480/0f7a817465ea47439d915b62d8d8960d [2021-10-13 07:58:51,690 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 07:58:51,692 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 07:58:51,694 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 07:58:51,694 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 07:58:51,699 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 07:58:51,700 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:58:51" (1/1) ... [2021-10-13 07:58:51,702 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c6e06aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:58:51, skipping insertion in model container [2021-10-13 07:58:51,702 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:58:51" (1/1) ... [2021-10-13 07:58:51,712 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 07:58:51,726 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 07:58:51,884 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_b9edf6f0-18b9-4c3c-83c8-e97f96b72d73/sv-benchmarks/c/floats-cbmc-regression/float-no-simp3.c[358,371] [2021-10-13 07:58:51,889 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:58:51,907 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 07:58:51,925 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_b9edf6f0-18b9-4c3c-83c8-e97f96b72d73/sv-benchmarks/c/floats-cbmc-regression/float-no-simp3.c[358,371] [2021-10-13 07:58:51,926 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:58:51,945 INFO L208 MainTranslator]: Completed translation [2021-10-13 07:58:51,945 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:58:51 WrapperNode [2021-10-13 07:58:51,946 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 07:58:51,947 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 07:58:51,948 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 07:58:51,948 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 07:58:51,957 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:58:51" (1/1) ... [2021-10-13 07:58:51,969 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:58:51" (1/1) ... [2021-10-13 07:58:51,991 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 07:58:51,995 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 07:58:51,996 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 07:58:51,996 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 07:58:52,006 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:58:51" (1/1) ... [2021-10-13 07:58:52,007 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:58:51" (1/1) ... [2021-10-13 07:58:52,025 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:58:51" (1/1) ... [2021-10-13 07:58:52,029 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:58:51" (1/1) ... [2021-10-13 07:58:52,037 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:58:51" (1/1) ... [2021-10-13 07:58:52,041 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:58:51" (1/1) ... [2021-10-13 07:58:52,049 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:58:51" (1/1) ... [2021-10-13 07:58:52,052 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 07:58:52,054 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 07:58:52,055 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 07:58:52,056 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 07:58:52,057 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:58:51" (1/1) ... [2021-10-13 07:58:52,066 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:58:52,083 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9edf6f0-18b9-4c3c-83c8-e97f96b72d73/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:58:52,103 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9edf6f0-18b9-4c3c-83c8-e97f96b72d73/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 07:58:52,124 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9edf6f0-18b9-4c3c-83c8-e97f96b72d73/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 07:58:52,167 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 07:58:52,168 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 07:58:52,168 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-13 07:58:52,168 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 07:58:52,614 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 07:58:52,614 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-10-13 07:58:52,616 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:58:52 BoogieIcfgContainer [2021-10-13 07:58:52,617 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 07:58:52,619 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 07:58:52,619 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 07:58:52,622 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 07:58:52,623 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:58:51" (1/3) ... [2021-10-13 07:58:52,624 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f497355 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:58:52, skipping insertion in model container [2021-10-13 07:58:52,624 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:58:51" (2/3) ... [2021-10-13 07:58:52,625 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f497355 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:58:52, skipping insertion in model container [2021-10-13 07:58:52,625 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:58:52" (3/3) ... [2021-10-13 07:58:52,627 INFO L111 eAbstractionObserver]: Analyzing ICFG float-no-simp3.c [2021-10-13 07:58:52,633 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 07:58:52,634 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-13 07:58:52,693 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 07:58:52,701 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-13 07:58:52,702 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-13 07:58:52,734 INFO L276 IsEmpty]: Start isEmpty. Operand has 8 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 7 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:58:52,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-13 07:58:52,740 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:58:52,741 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-13 07:58:52,742 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:58:52,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:58:52,749 INFO L82 PathProgramCache]: Analyzing trace with hash 925604, now seen corresponding path program 1 times [2021-10-13 07:58:52,778 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:58:52,779 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [170493019] [2021-10-13 07:58:52,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:58:52,792 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:58:52,793 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9edf6f0-18b9-4c3c-83c8-e97f96b72d73/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:58:52,801 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9edf6f0-18b9-4c3c-83c8-e97f96b72d73/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:58:52,809 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9edf6f0-18b9-4c3c-83c8-e97f96b72d73/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-13 07:58:52,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:58:52,973 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-13 07:58:52,978 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:58:53,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:58:53,143 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:58:53,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:58:53,946 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:58:53,946 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [170493019] [2021-10-13 07:58:53,947 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [170493019] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:58:53,948 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:58:53,948 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-10-13 07:58:53,950 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878263471] [2021-10-13 07:58:53,957 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-13 07:58:53,958 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:58:53,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-13 07:58:53,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-13 07:58:53,978 INFO L87 Difference]: Start difference. First operand has 8 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 7 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 6 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:58:54,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:58:54,072 INFO L93 Difference]: Finished difference Result 11 states and 10 transitions. [2021-10-13 07:58:54,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 07:58:54,077 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2021-10-13 07:58:54,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:58:54,086 INFO L225 Difference]: With dead ends: 11 [2021-10-13 07:58:54,087 INFO L226 Difference]: Without dead ends: 0 [2021-10-13 07:58:54,090 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 651.5ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-13 07:58:54,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-13 07:58:54,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-13 07:58:54,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:58:54,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-13 07:58:54,121 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 4 [2021-10-13 07:58:54,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:58:54,122 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-13 07:58:54,122 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:58:54,122 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-13 07:58:54,123 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-13 07:58:54,126 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:58:54,148 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9edf6f0-18b9-4c3c-83c8-e97f96b72d73/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-13 07:58:54,331 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9edf6f0-18b9-4c3c-83c8-e97f96b72d73/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:58:54,333 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-13 07:58:54,338 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-13 07:58:54,338 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-13 07:58:54,339 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-13 07:58:54,339 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-13 07:58:54,340 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 10) no Hoare annotation was computed. [2021-10-13 07:58:54,340 INFO L857 garLoopResultBuilder]: For program point L10(line 10) no Hoare annotation was computed. [2021-10-13 07:58:54,342 INFO L857 garLoopResultBuilder]: For program point L10-1(line 10) no Hoare annotation was computed. [2021-10-13 07:58:54,342 INFO L857 garLoopResultBuilder]: For program point L5(lines 5 11) no Hoare annotation was computed. [2021-10-13 07:58:54,349 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 07:58:54,355 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 07:58:54 BoogieIcfgContainer [2021-10-13 07:58:54,355 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 07:58:54,365 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 07:58:54,365 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 07:58:54,365 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 07:58:54,366 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:58:52" (3/4) ... [2021-10-13 07:58:54,374 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-13 07:58:54,391 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2021-10-13 07:58:54,391 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-13 07:58:54,392 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-13 07:58:54,393 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-13 07:58:54,446 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9edf6f0-18b9-4c3c-83c8-e97f96b72d73/bin/utaipan-q2qaUkNPG8/witness.graphml [2021-10-13 07:58:54,447 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 07:58:54,448 INFO L168 Benchmark]: Toolchain (without parser) took 2755.65 ms. Allocated memory is still 73.4 MB. Free memory was 56.2 MB in the beginning and 33.4 MB in the end (delta: 22.7 MB). Peak memory consumption was 25.1 MB. Max. memory is 16.1 GB. [2021-10-13 07:58:54,449 INFO L168 Benchmark]: CDTParser took 0.36 ms. Allocated memory is still 73.4 MB. Free memory is still 55.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:58:54,450 INFO L168 Benchmark]: CACSL2BoogieTranslator took 252.39 ms. Allocated memory is still 73.4 MB. Free memory was 56.0 MB in the beginning and 46.5 MB in the end (delta: 9.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-13 07:58:54,450 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.34 ms. Allocated memory is still 73.4 MB. Free memory was 46.3 MB in the beginning and 44.9 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:58:54,451 INFO L168 Benchmark]: Boogie Preprocessor took 58.16 ms. Allocated memory is still 73.4 MB. Free memory was 44.9 MB in the beginning and 44.0 MB in the end (delta: 942.0 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 07:58:54,452 INFO L168 Benchmark]: RCFGBuilder took 562.58 ms. Allocated memory is still 73.4 MB. Free memory was 43.8 MB in the beginning and 55.7 MB in the end (delta: -12.0 MB). Peak memory consumption was 12.5 MB. Max. memory is 16.1 GB. [2021-10-13 07:58:54,453 INFO L168 Benchmark]: TraceAbstraction took 1736.90 ms. Allocated memory is still 73.4 MB. Free memory was 55.4 MB in the beginning and 35.6 MB in the end (delta: 19.8 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. [2021-10-13 07:58:54,453 INFO L168 Benchmark]: Witness Printer took 81.90 ms. Allocated memory is still 73.4 MB. Free memory was 35.3 MB in the beginning and 33.4 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 07:58:54,457 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36 ms. Allocated memory is still 73.4 MB. Free memory is still 55.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 252.39 ms. Allocated memory is still 73.4 MB. Free memory was 56.0 MB in the beginning and 46.5 MB in the end (delta: 9.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 44.34 ms. Allocated memory is still 73.4 MB. Free memory was 46.3 MB in the beginning and 44.9 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 58.16 ms. Allocated memory is still 73.4 MB. Free memory was 44.9 MB in the beginning and 44.0 MB in the end (delta: 942.0 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 562.58 ms. Allocated memory is still 73.4 MB. Free memory was 43.8 MB in the beginning and 55.7 MB in the end (delta: -12.0 MB). Peak memory consumption was 12.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1736.90 ms. Allocated memory is still 73.4 MB. Free memory was 55.4 MB in the beginning and 35.6 MB in the end (delta: 19.8 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. * Witness Printer took 81.90 ms. Allocated memory is still 73.4 MB. Free memory was 35.3 MB in the beginning and 33.4 MB in the end (delta: 1.9 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: 10]: 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, 8 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1657.9ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 11.0ms, AutomataDifference: 131.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 5.7ms, InitialAbstractionConstructionTime: 27.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 3 SDtfs, 14 SDslu, 1 SDs, 0 SdLazy, 2 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 54.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 651.5ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=8occurred in iteration=0, InterpolantAutomatonStates: 4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 12.4ms AutomataMinimizationTime, 1 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: 19.5ms SsaConstructionTime, 78.4ms SatisfiabilityAnalysisTime, 977.5ms InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 42 SizeOfPredicates, 3 NumberOfNonLiveVariables, 26 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-10-13 07:58:54,520 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b9edf6f0-18b9-4c3c-83c8-e97f96b72d73/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...