./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_1250.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_5ba311b6-e0b8-4343-a688-b5984855f5f4/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_5ba311b6-e0b8-4343-a688-b5984855f5f4/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_5ba311b6-e0b8-4343-a688-b5984855f5f4/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_5ba311b6-e0b8-4343-a688-b5984855f5f4/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1250.c -s /tmp/vcloud-vcloud-master/worker/run_dir_5ba311b6-e0b8-4343-a688-b5984855f5f4/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_5ba311b6-e0b8-4343-a688-b5984855f5f4/bin/utaipan --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 7498db39da300a600c956afc9ee769ef7c520660 ...................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_5ba311b6-e0b8-4343-a688-b5984855f5f4/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_5ba311b6-e0b8-4343-a688-b5984855f5f4/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_5ba311b6-e0b8-4343-a688-b5984855f5f4/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_5ba311b6-e0b8-4343-a688-b5984855f5f4/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1250.c -s /tmp/vcloud-vcloud-master/worker/run_dir_5ba311b6-e0b8-4343-a688-b5984855f5f4/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_5ba311b6-e0b8-4343-a688-b5984855f5f4/bin/utaipan --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 7498db39da300a600c956afc9ee769ef7c520660 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-30 02:22:17,742 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 02:22:17,745 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 02:22:17,796 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 02:22:17,796 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 02:22:17,801 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 02:22:17,803 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 02:22:17,804 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 02:22:17,806 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 02:22:17,807 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 02:22:17,808 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 02:22:17,810 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 02:22:17,811 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 02:22:17,812 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 02:22:17,813 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 02:22:17,815 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 02:22:17,816 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 02:22:17,817 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 02:22:17,820 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 02:22:17,823 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 02:22:17,825 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 02:22:17,827 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 02:22:17,829 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 02:22:17,830 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 02:22:17,834 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 02:22:17,835 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 02:22:17,835 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 02:22:17,837 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 02:22:17,838 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 02:22:17,839 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 02:22:17,839 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 02:22:17,841 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 02:22:17,842 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 02:22:17,843 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 02:22:17,845 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 02:22:17,845 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 02:22:17,846 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 02:22:17,847 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 02:22:17,847 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 02:22:17,848 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 02:22:17,850 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 02:22:17,859 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_5ba311b6-e0b8-4343-a688-b5984855f5f4/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-30 02:22:17,894 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 02:22:17,894 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 02:22:17,895 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-30 02:22:17,895 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-30 02:22:17,896 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-30 02:22:17,896 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-30 02:22:17,896 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-30 02:22:17,897 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-30 02:22:17,897 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-30 02:22:17,897 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-30 02:22:17,897 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-30 02:22:17,898 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-30 02:22:17,898 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-30 02:22:17,899 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-30 02:22:17,899 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-30 02:22:17,900 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 02:22:17,900 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 02:22:17,901 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 02:22:17,901 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 02:22:17,901 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 02:22:17,901 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 02:22:17,902 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 02:22:17,902 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 02:22:17,902 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-30 02:22:17,902 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 02:22:17,903 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 02:22:17,903 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 02:22:17,903 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 02:22:17,904 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 02:22:17,904 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 02:22:17,904 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 02:22:17,905 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 02:22:17,905 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 02:22:17,905 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 02:22:17,906 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 02:22:17,906 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-30 02:22:17,906 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-30 02:22:17,906 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 02:22:17,907 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 02:22:17,907 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-30 02:22:17,907 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-vcloud-master/worker/run_dir_5ba311b6-e0b8-4343-a688-b5984855f5f4/bin/utaipan/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_5ba311b6-e0b8-4343-a688-b5984855f5f4/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7498db39da300a600c956afc9ee769ef7c520660 [2020-11-30 02:22:18,243 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 02:22:18,281 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 02:22:18,284 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 02:22:18,294 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 02:22:18,295 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 02:22:18,297 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_5ba311b6-e0b8-4343-a688-b5984855f5f4/bin/utaipan/../../sv-benchmarks/c/float-newlib/float_req_bl_1250.c [2020-11-30 02:22:18,391 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_5ba311b6-e0b8-4343-a688-b5984855f5f4/bin/utaipan/data/9129c8a71/a3a7c581f748439384a5c68d72721243/FLAG75f99a41b [2020-11-30 02:22:18,985 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 02:22:18,986 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_5ba311b6-e0b8-4343-a688-b5984855f5f4/sv-benchmarks/c/float-newlib/float_req_bl_1250.c [2020-11-30 02:22:18,997 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_5ba311b6-e0b8-4343-a688-b5984855f5f4/bin/utaipan/data/9129c8a71/a3a7c581f748439384a5c68d72721243/FLAG75f99a41b [2020-11-30 02:22:19,291 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_5ba311b6-e0b8-4343-a688-b5984855f5f4/bin/utaipan/data/9129c8a71/a3a7c581f748439384a5c68d72721243 [2020-11-30 02:22:19,295 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 02:22:19,297 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 02:22:19,302 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 02:22:19,303 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 02:22:19,307 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 02:22:19,313 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 02:22:19" (1/1) ... [2020-11-30 02:22:19,318 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@217e498c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:22:19, skipping insertion in model container [2020-11-30 02:22:19,319 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 02:22:19" (1/1) ... [2020-11-30 02:22:19,339 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 02:22:19,358 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 02:22:19,578 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 02:22:19,588 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 02:22:19,617 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 02:22:19,637 INFO L208 MainTranslator]: Completed translation [2020-11-30 02:22:19,638 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:22:19 WrapperNode [2020-11-30 02:22:19,638 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 02:22:19,640 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 02:22:19,640 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 02:22:19,640 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 02:22:19,649 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:22:19" (1/1) ... [2020-11-30 02:22:19,682 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:22:19" (1/1) ... [2020-11-30 02:22:19,724 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 02:22:19,725 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 02:22:19,726 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 02:22:19,726 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 02:22:19,736 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:22:19" (1/1) ... [2020-11-30 02:22:19,736 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:22:19" (1/1) ... [2020-11-30 02:22:19,740 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:22:19" (1/1) ... [2020-11-30 02:22:19,740 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:22:19" (1/1) ... [2020-11-30 02:22:19,749 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:22:19" (1/1) ... [2020-11-30 02:22:19,755 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:22:19" (1/1) ... [2020-11-30 02:22:19,757 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:22:19" (1/1) ... [2020-11-30 02:22:19,760 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 02:22:19,761 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 02:22:19,762 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 02:22:19,762 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 02:22:19,763 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:22:19" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5ba311b6-e0b8-4343-a688-b5984855f5f4/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 02:22:19,840 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-30 02:22:19,840 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 02:22:19,841 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-11-30 02:22:19,841 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 02:22:19,841 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 02:22:19,841 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-30 02:22:19,842 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-30 02:22:20,893 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 02:22:20,894 INFO L298 CfgBuilder]: Removed 18 assume(true) statements. [2020-11-30 02:22:20,896 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 02:22:20 BoogieIcfgContainer [2020-11-30 02:22:20,896 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 02:22:20,898 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 02:22:20,898 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 02:22:20,903 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 02:22:20,904 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 02:22:19" (1/3) ... [2020-11-30 02:22:20,905 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46ba08b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 02:22:20, skipping insertion in model container [2020-11-30 02:22:20,905 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:22:19" (2/3) ... [2020-11-30 02:22:20,906 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46ba08b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 02:22:20, skipping insertion in model container [2020-11-30 02:22:20,906 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 02:22:20" (3/3) ... [2020-11-30 02:22:20,908 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1250.c [2020-11-30 02:22:20,923 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 02:22:20,928 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-30 02:22:20,943 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-30 02:22:20,984 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 02:22:20,986 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 02:22:20,986 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 02:22:20,986 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 02:22:20,986 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 02:22:20,987 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 02:22:20,987 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 02:22:20,987 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 02:22:21,000 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2020-11-30 02:22:21,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-30 02:22:21,005 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:22:21,006 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:22:21,006 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:22:21,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:22:21,012 INFO L82 PathProgramCache]: Analyzing trace with hash 40951417, now seen corresponding path program 1 times [2020-11-30 02:22:21,021 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:22:21,022 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234421229] [2020-11-30 02:22:21,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:22:21,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:22:21,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:22:21,156 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234421229] [2020-11-30 02:22:21,158 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:22:21,158 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 02:22:21,159 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744555066] [2020-11-30 02:22:21,165 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-30 02:22:21,165 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:22:21,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-30 02:22:21,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-30 02:22:21,185 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 2 states. [2020-11-30 02:22:21,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:22:21,203 INFO L93 Difference]: Finished difference Result 27 states and 37 transitions. [2020-11-30 02:22:21,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-30 02:22:21,205 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 7 [2020-11-30 02:22:21,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:22:21,215 INFO L225 Difference]: With dead ends: 27 [2020-11-30 02:22:21,216 INFO L226 Difference]: Without dead ends: 12 [2020-11-30 02:22:21,219 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-30 02:22:21,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2020-11-30 02:22:21,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2020-11-30 02:22:21,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-11-30 02:22:21,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2020-11-30 02:22:21,262 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 7 [2020-11-30 02:22:21,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:22:21,263 INFO L481 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2020-11-30 02:22:21,263 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-30 02:22:21,263 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2020-11-30 02:22:21,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-30 02:22:21,264 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:22:21,264 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:22:21,264 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-30 02:22:21,265 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:22:21,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:22:21,266 INFO L82 PathProgramCache]: Analyzing trace with hash 487400052, now seen corresponding path program 1 times [2020-11-30 02:22:21,266 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:22:21,267 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170225676] [2020-11-30 02:22:21,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:22:21,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 02:22:21,346 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 02:22:21,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 02:22:21,464 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 02:22:21,501 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-11-30 02:22:21,502 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-30 02:22:21,503 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-30 02:22:21,536 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 02:22:21 BoogieIcfgContainer [2020-11-30 02:22:21,536 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 02:22:21,537 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 02:22:21,538 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 02:22:21,539 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 02:22:21,539 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 02:22:20" (3/4) ... [2020-11-30 02:22:21,543 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-30 02:22:21,543 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 02:22:21,547 INFO L168 Benchmark]: Toolchain (without parser) took 2247.28 ms. Allocated memory was 90.2 MB in the beginning and 113.2 MB in the end (delta: 23.1 MB). Free memory was 52.8 MB in the beginning and 86.7 MB in the end (delta: -33.9 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 02:22:21,549 INFO L168 Benchmark]: CDTParser took 0.38 ms. Allocated memory is still 90.2 MB. Free memory is still 69.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 02:22:21,550 INFO L168 Benchmark]: CACSL2BoogieTranslator took 336.51 ms. Allocated memory is still 90.2 MB. Free memory was 52.6 MB in the beginning and 67.4 MB in the end (delta: -14.8 MB). Peak memory consumption was 8.0 MB. Max. memory is 16.1 GB. [2020-11-30 02:22:21,552 INFO L168 Benchmark]: Boogie Procedure Inliner took 84.58 ms. Allocated memory is still 90.2 MB. Free memory was 67.4 MB in the beginning and 65.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 02:22:21,553 INFO L168 Benchmark]: Boogie Preprocessor took 35.12 ms. Allocated memory is still 90.2 MB. Free memory was 65.7 MB in the beginning and 64.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 02:22:21,554 INFO L168 Benchmark]: RCFGBuilder took 1134.60 ms. Allocated memory was 90.2 MB in the beginning and 113.2 MB in the end (delta: 23.1 MB). Free memory was 64.3 MB in the beginning and 73.7 MB in the end (delta: -9.4 MB). Peak memory consumption was 18.6 MB. Max. memory is 16.1 GB. [2020-11-30 02:22:21,555 INFO L168 Benchmark]: TraceAbstraction took 638.50 ms. Allocated memory is still 113.2 MB. Free memory was 73.4 MB in the beginning and 87.3 MB in the end (delta: -13.9 MB). Peak memory consumption was 24.8 MB. Max. memory is 16.1 GB. [2020-11-30 02:22:21,555 INFO L168 Benchmark]: Witness Printer took 5.91 ms. Allocated memory is still 113.2 MB. Free memory was 87.3 MB in the beginning and 86.7 MB in the end (delta: 568.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 02:22:21,571 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.38 ms. Allocated memory is still 90.2 MB. Free memory is still 69.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 336.51 ms. Allocated memory is still 90.2 MB. Free memory was 52.6 MB in the beginning and 67.4 MB in the end (delta: -14.8 MB). Peak memory consumption was 8.0 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 84.58 ms. Allocated memory is still 90.2 MB. Free memory was 67.4 MB in the beginning and 65.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 35.12 ms. Allocated memory is still 90.2 MB. Free memory was 65.7 MB in the beginning and 64.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1134.60 ms. Allocated memory was 90.2 MB in the beginning and 113.2 MB in the end (delta: 23.1 MB). Free memory was 64.3 MB in the beginning and 73.7 MB in the end (delta: -9.4 MB). Peak memory consumption was 18.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 638.50 ms. Allocated memory is still 113.2 MB. Free memory was 73.4 MB in the beginning and 87.3 MB in the end (delta: -13.9 MB). Peak memory consumption was 24.8 MB. Max. memory is 16.1 GB. * Witness Printer took 5.91 ms. Allocated memory is still 113.2 MB. Free memory was 87.3 MB in the beginning and 86.7 MB in the end (delta: 568.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 56, overapproximation of someBinaryArithmeticFLOAToperation at line 62. Possible FailurePath: [L62] float x = 0.0f / 0.0f; [L63] float y = 0.0f / 0.0f; [L22] __uint32_t w; [L25] ieee_float_shape_type gf_u; [L26] gf_u.value = (x) [L27] EXPR gf_u.word [L27] (w) = gf_u.word [L30] COND FALSE !(w == 0x00000000 || w == 0x80000000) [L32-L33] COND FALSE !((w >= 0x00800000 && w <= 0x7f7fffff) || (w >= 0x80800000 && w <= 0xff7fffff)) [L35-L36] COND FALSE !((w >= 0x00000001 && w <= 0x007fffff) || (w >= 0x80000001 && w <= 0x807fffff)) [L38] COND FALSE !(w == 0x7f800000 || w == 0xff800000) [L41] return 0; [L45] COND TRUE __fpclassify_float(x) == 0 [L46] return y; [L64] float res = fmax_float(x, y); [L56] return x != x; [L66] COND TRUE !isnan_float(res) [L3] __assert_fail("0", "float_req_bl_1250.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.5s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 14 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=14occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 15 NumberOfCodeBlocks, 15 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 36 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-a4ecdab [2020-11-30 02:22:24,496 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 02:22:24,501 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 02:22:24,567 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 02:22:24,568 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 02:22:24,575 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 02:22:24,579 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 02:22:24,584 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 02:22:24,588 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 02:22:24,596 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 02:22:24,597 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 02:22:24,603 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 02:22:24,604 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 02:22:24,610 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 02:22:24,612 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 02:22:24,614 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 02:22:24,615 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 02:22:24,619 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 02:22:24,623 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 02:22:24,631 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 02:22:24,633 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 02:22:24,635 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 02:22:24,643 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 02:22:24,645 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 02:22:24,652 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 02:22:24,655 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 02:22:24,656 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 02:22:24,657 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 02:22:24,659 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 02:22:24,660 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 02:22:24,661 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 02:22:24,661 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 02:22:24,663 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 02:22:24,664 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 02:22:24,665 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 02:22:24,666 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 02:22:24,666 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 02:22:24,667 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 02:22:24,667 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 02:22:24,669 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 02:22:24,670 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 02:22:24,671 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_5ba311b6-e0b8-4343-a688-b5984855f5f4/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2020-11-30 02:22:24,712 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 02:22:24,712 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 02:22:24,714 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-30 02:22:24,714 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-30 02:22:24,715 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-30 02:22:24,715 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-30 02:22:24,715 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-30 02:22:24,716 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-30 02:22:24,716 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-30 02:22:24,718 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 02:22:24,719 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 02:22:24,719 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 02:22:24,719 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 02:22:24,720 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 02:22:24,720 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 02:22:24,720 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 02:22:24,720 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-30 02:22:24,720 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-30 02:22:24,721 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-30 02:22:24,721 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 02:22:24,721 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 02:22:24,721 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 02:22:24,722 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 02:22:24,722 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 02:22:24,722 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-30 02:22:24,722 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 02:22:24,723 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 02:22:24,723 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 02:22:24,723 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 02:22:24,723 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 02:22:24,738 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 02:22:24,738 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-11-30 02:22:24,739 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-30 02:22:24,739 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 02:22:24,740 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 02:22:24,740 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-30 02:22:24,740 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-vcloud-master/worker/run_dir_5ba311b6-e0b8-4343-a688-b5984855f5f4/bin/utaipan/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_5ba311b6-e0b8-4343-a688-b5984855f5f4/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7498db39da300a600c956afc9ee769ef7c520660 [2020-11-30 02:22:25,181 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 02:22:25,225 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 02:22:25,228 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 02:22:25,230 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 02:22:25,237 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 02:22:25,238 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_5ba311b6-e0b8-4343-a688-b5984855f5f4/bin/utaipan/../../sv-benchmarks/c/float-newlib/float_req_bl_1250.c [2020-11-30 02:22:25,312 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_5ba311b6-e0b8-4343-a688-b5984855f5f4/bin/utaipan/data/61c53279d/8d91caf9fe45401eb99257a7d5436eb5/FLAGcc0c6d1c9 [2020-11-30 02:22:25,958 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 02:22:25,958 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_5ba311b6-e0b8-4343-a688-b5984855f5f4/sv-benchmarks/c/float-newlib/float_req_bl_1250.c [2020-11-30 02:22:25,967 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_5ba311b6-e0b8-4343-a688-b5984855f5f4/bin/utaipan/data/61c53279d/8d91caf9fe45401eb99257a7d5436eb5/FLAGcc0c6d1c9 [2020-11-30 02:22:26,281 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_5ba311b6-e0b8-4343-a688-b5984855f5f4/bin/utaipan/data/61c53279d/8d91caf9fe45401eb99257a7d5436eb5 [2020-11-30 02:22:26,285 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 02:22:26,289 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 02:22:26,293 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 02:22:26,293 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 02:22:26,298 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 02:22:26,300 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 02:22:26" (1/1) ... [2020-11-30 02:22:26,306 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19e0c543 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:22:26, skipping insertion in model container [2020-11-30 02:22:26,308 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 02:22:26" (1/1) ... [2020-11-30 02:22:26,317 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 02:22:26,337 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 02:22:26,560 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 02:22:26,580 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 02:22:26,624 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 02:22:26,655 INFO L208 MainTranslator]: Completed translation [2020-11-30 02:22:26,656 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:22:26 WrapperNode [2020-11-30 02:22:26,656 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 02:22:26,658 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 02:22:26,658 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 02:22:26,658 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 02:22:26,667 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:22:26" (1/1) ... [2020-11-30 02:22:26,720 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:22:26" (1/1) ... [2020-11-30 02:22:26,776 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 02:22:26,777 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 02:22:26,777 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 02:22:26,777 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 02:22:26,786 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:22:26" (1/1) ... [2020-11-30 02:22:26,786 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:22:26" (1/1) ... [2020-11-30 02:22:26,791 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:22:26" (1/1) ... [2020-11-30 02:22:26,791 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:22:26" (1/1) ... [2020-11-30 02:22:26,801 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:22:26" (1/1) ... [2020-11-30 02:22:26,805 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:22:26" (1/1) ... [2020-11-30 02:22:26,808 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:22:26" (1/1) ... [2020-11-30 02:22:26,812 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 02:22:26,813 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 02:22:26,813 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 02:22:26,814 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 02:22:26,814 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:22:26" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5ba311b6-e0b8-4343-a688-b5984855f5f4/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 02:22:26,892 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-30 02:22:26,893 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 02:22:26,893 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-11-30 02:22:26,893 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 02:22:26,893 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 02:22:26,893 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2020-11-30 02:22:26,893 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-30 02:22:27,670 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 02:22:27,672 INFO L298 CfgBuilder]: Removed 18 assume(true) statements. [2020-11-30 02:22:27,673 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 02:22:27 BoogieIcfgContainer [2020-11-30 02:22:27,674 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 02:22:27,675 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 02:22:27,675 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 02:22:27,678 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 02:22:27,679 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 02:22:26" (1/3) ... [2020-11-30 02:22:27,680 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a6133cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 02:22:27, skipping insertion in model container [2020-11-30 02:22:27,680 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:22:26" (2/3) ... [2020-11-30 02:22:27,681 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a6133cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 02:22:27, skipping insertion in model container [2020-11-30 02:22:27,681 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 02:22:27" (3/3) ... [2020-11-30 02:22:27,683 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1250.c [2020-11-30 02:22:27,693 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 02:22:27,698 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-30 02:22:27,718 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-30 02:22:27,758 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 02:22:27,759 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 02:22:27,759 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 02:22:27,760 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 02:22:27,760 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 02:22:27,760 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 02:22:27,760 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 02:22:27,761 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 02:22:27,777 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2020-11-30 02:22:27,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-30 02:22:27,783 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:22:27,783 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:22:27,784 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:22:27,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:22:27,789 INFO L82 PathProgramCache]: Analyzing trace with hash -958093107, now seen corresponding path program 1 times [2020-11-30 02:22:27,802 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-30 02:22:27,802 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [275942773] [2020-11-30 02:22:27,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5ba311b6-e0b8-4343-a688-b5984855f5f4/bin/utaipan/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-11-30 02:22:27,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:22:27,911 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 1 conjunts are in the unsatisfiable core [2020-11-30 02:22:27,915 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:22:27,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:22:27,932 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:22:27,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:22:27,937 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [275942773] [2020-11-30 02:22:27,937 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:22:27,938 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-11-30 02:22:27,939 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692866299] [2020-11-30 02:22:27,943 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-30 02:22:27,943 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-30 02:22:27,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-30 02:22:27,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-30 02:22:27,959 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 2 states. [2020-11-30 02:22:27,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:22:27,976 INFO L93 Difference]: Finished difference Result 55 states and 85 transitions. [2020-11-30 02:22:27,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-30 02:22:27,977 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-11-30 02:22:27,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:22:27,986 INFO L225 Difference]: With dead ends: 55 [2020-11-30 02:22:27,987 INFO L226 Difference]: Without dead ends: 25 [2020-11-30 02:22:27,989 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-30 02:22:28,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-11-30 02:22:28,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2020-11-30 02:22:28,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-11-30 02:22:28,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 35 transitions. [2020-11-30 02:22:28,022 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 35 transitions. Word has length 10 [2020-11-30 02:22:28,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:22:28,022 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 35 transitions. [2020-11-30 02:22:28,022 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-30 02:22:28,023 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 35 transitions. [2020-11-30 02:22:28,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-30 02:22:28,023 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:22:28,023 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:22:28,238 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-30 02:22:28,239 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:22:28,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:22:28,241 INFO L82 PathProgramCache]: Analyzing trace with hash 1001566992, now seen corresponding path program 1 times [2020-11-30 02:22:28,244 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-30 02:22:28,244 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [802155073] [2020-11-30 02:22:28,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5ba311b6-e0b8-4343-a688-b5984855f5f4/bin/utaipan/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-11-30 02:22:28,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:22:28,365 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-30 02:22:28,367 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:22:28,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:22:28,401 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:22:28,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:22:28,428 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [802155073] [2020-11-30 02:22:28,428 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:22:28,429 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2020-11-30 02:22:28,429 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992461129] [2020-11-30 02:22:28,430 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-30 02:22:28,431 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-30 02:22:28,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-30 02:22:28,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-30 02:22:28,432 INFO L87 Difference]: Start difference. First operand 25 states and 35 transitions. Second operand 6 states. [2020-11-30 02:22:28,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:22:28,605 INFO L93 Difference]: Finished difference Result 52 states and 65 transitions. [2020-11-30 02:22:28,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-30 02:22:28,608 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2020-11-30 02:22:28,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:22:28,610 INFO L225 Difference]: With dead ends: 52 [2020-11-30 02:22:28,611 INFO L226 Difference]: Without dead ends: 47 [2020-11-30 02:22:28,612 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-11-30 02:22:28,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-11-30 02:22:28,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 27. [2020-11-30 02:22:28,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-11-30 02:22:28,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 37 transitions. [2020-11-30 02:22:28,622 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 37 transitions. Word has length 11 [2020-11-30 02:22:28,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:22:28,623 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 37 transitions. [2020-11-30 02:22:28,623 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-30 02:22:28,623 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 37 transitions. [2020-11-30 02:22:28,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-30 02:22:28,624 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:22:28,624 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:22:28,825 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-30 02:22:28,826 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:22:28,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:22:28,835 INFO L82 PathProgramCache]: Analyzing trace with hash 1219229111, now seen corresponding path program 1 times [2020-11-30 02:22:28,836 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-30 02:22:28,836 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [850859847] [2020-11-30 02:22:28,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5ba311b6-e0b8-4343-a688-b5984855f5f4/bin/utaipan/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-11-30 02:22:28,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:22:28,939 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-30 02:22:28,941 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:22:29,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:22:29,063 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:22:29,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:22:29,166 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [850859847] [2020-11-30 02:22:29,166 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:22:29,167 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2020-11-30 02:22:29,167 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658976011] [2020-11-30 02:22:29,167 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-30 02:22:29,167 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-30 02:22:29,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-30 02:22:29,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-11-30 02:22:29,168 INFO L87 Difference]: Start difference. First operand 27 states and 37 transitions. Second operand 10 states. [2020-11-30 02:22:29,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:22:29,550 INFO L93 Difference]: Finished difference Result 36 states and 45 transitions. [2020-11-30 02:22:29,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-30 02:22:29,552 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 14 [2020-11-30 02:22:29,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:22:29,553 INFO L225 Difference]: With dead ends: 36 [2020-11-30 02:22:29,553 INFO L226 Difference]: Without dead ends: 27 [2020-11-30 02:22:29,554 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2020-11-30 02:22:29,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-11-30 02:22:29,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 25. [2020-11-30 02:22:29,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-11-30 02:22:29,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 33 transitions. [2020-11-30 02:22:29,560 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 33 transitions. Word has length 14 [2020-11-30 02:22:29,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:22:29,561 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 33 transitions. [2020-11-30 02:22:29,561 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-30 02:22:29,561 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 33 transitions. [2020-11-30 02:22:29,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-30 02:22:29,562 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:22:29,562 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:22:29,779 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-11-30 02:22:29,779 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:22:29,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:22:29,780 INFO L82 PathProgramCache]: Analyzing trace with hash 1012428811, now seen corresponding path program 1 times [2020-11-30 02:22:29,780 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-30 02:22:29,781 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [987012488] [2020-11-30 02:22:29,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5ba311b6-e0b8-4343-a688-b5984855f5f4/bin/utaipan/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2020-11-30 02:22:29,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:22:29,880 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-30 02:22:29,881 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:22:29,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:22:29,901 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:22:29,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:22:29,928 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [987012488] [2020-11-30 02:22:29,929 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:22:29,929 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2020-11-30 02:22:29,929 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380673216] [2020-11-30 02:22:29,929 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-30 02:22:29,930 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-30 02:22:29,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-30 02:22:29,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-30 02:22:29,931 INFO L87 Difference]: Start difference. First operand 25 states and 33 transitions. Second operand 6 states. [2020-11-30 02:22:30,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:22:30,059 INFO L93 Difference]: Finished difference Result 52 states and 59 transitions. [2020-11-30 02:22:30,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-30 02:22:30,063 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-11-30 02:22:30,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:22:30,064 INFO L225 Difference]: With dead ends: 52 [2020-11-30 02:22:30,064 INFO L226 Difference]: Without dead ends: 47 [2020-11-30 02:22:30,065 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-11-30 02:22:30,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-11-30 02:22:30,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 27. [2020-11-30 02:22:30,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-11-30 02:22:30,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 35 transitions. [2020-11-30 02:22:30,089 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 35 transitions. Word has length 16 [2020-11-30 02:22:30,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:22:30,089 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 35 transitions. [2020-11-30 02:22:30,090 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-30 02:22:30,090 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 35 transitions. [2020-11-30 02:22:30,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-30 02:22:30,091 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:22:30,091 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:22:30,305 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-11-30 02:22:30,305 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:22:30,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:22:30,306 INFO L82 PathProgramCache]: Analyzing trace with hash -356841937, now seen corresponding path program 1 times [2020-11-30 02:22:30,307 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-30 02:22:30,307 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [401745749] [2020-11-30 02:22:30,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5ba311b6-e0b8-4343-a688-b5984855f5f4/bin/utaipan/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2020-11-30 02:22:30,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:22:30,430 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-30 02:22:30,432 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:22:30,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:22:30,555 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:22:30,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:22:30,744 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [401745749] [2020-11-30 02:22:30,745 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:22:30,745 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2020-11-30 02:22:30,745 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166928548] [2020-11-30 02:22:30,745 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-11-30 02:22:30,746 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-30 02:22:30,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-11-30 02:22:30,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2020-11-30 02:22:30,747 INFO L87 Difference]: Start difference. First operand 27 states and 35 transitions. Second operand 12 states. [2020-11-30 02:22:31,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:22:31,212 INFO L93 Difference]: Finished difference Result 32 states and 39 transitions. [2020-11-30 02:22:31,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-30 02:22:31,212 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 18 [2020-11-30 02:22:31,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:22:31,213 INFO L225 Difference]: With dead ends: 32 [2020-11-30 02:22:31,213 INFO L226 Difference]: Without dead ends: 23 [2020-11-30 02:22:31,214 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 3 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2020-11-30 02:22:31,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-11-30 02:22:31,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-11-30 02:22:31,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-11-30 02:22:31,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2020-11-30 02:22:31,219 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 18 [2020-11-30 02:22:31,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:22:31,220 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2020-11-30 02:22:31,220 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-11-30 02:22:31,220 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2020-11-30 02:22:31,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-30 02:22:31,221 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:22:31,221 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:22:31,435 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-11-30 02:22:31,435 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:22:31,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:22:31,436 INFO L82 PathProgramCache]: Analyzing trace with hash -208376157, now seen corresponding path program 1 times [2020-11-30 02:22:31,437 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-30 02:22:31,437 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [133766221] [2020-11-30 02:22:31,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_5ba311b6-e0b8-4343-a688-b5984855f5f4/bin/utaipan/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2020-11-30 02:22:31,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:22:31,561 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-30 02:22:31,562 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:22:31,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:22:31,680 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:22:31,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:22:31,796 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [133766221] [2020-11-30 02:22:31,797 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:22:31,797 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2020-11-30 02:22:31,797 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354520306] [2020-11-30 02:22:31,798 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-30 02:22:31,798 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-30 02:22:31,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-30 02:22:31,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-11-30 02:22:31,799 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand 10 states. [2020-11-30 02:22:32,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:22:32,131 INFO L93 Difference]: Finished difference Result 23 states and 26 transitions. [2020-11-30 02:22:32,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-30 02:22:32,131 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 19 [2020-11-30 02:22:32,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:22:32,132 INFO L225 Difference]: With dead ends: 23 [2020-11-30 02:22:32,132 INFO L226 Difference]: Without dead ends: 0 [2020-11-30 02:22:32,133 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2020-11-30 02:22:32,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-30 02:22:32,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-30 02:22:32,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-30 02:22:32,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-30 02:22:32,133 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2020-11-30 02:22:32,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:22:32,134 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-30 02:22:32,134 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-30 02:22:32,134 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-30 02:22:32,134 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-30 02:22:32,334 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2020-11-30 02:22:32,337 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-30 02:22:32,628 INFO L270 CegarLoopResult]: At program point L56(line 56) the Hoare annotation is: (and (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24)) |ULTIMATE.start_fmax_float_#res|)) (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|) (not (fp.eq ULTIMATE.start_fmax_float_~y ULTIMATE.start_fmax_float_~y))) [2020-11-30 02:22:32,628 INFO L274 CegarLoopResult]: For program point L52(line 52) no Hoare annotation was computed. [2020-11-30 02:22:32,628 INFO L274 CegarLoopResult]: For program point L52-2(line 52) no Hoare annotation was computed. [2020-11-30 02:22:32,628 INFO L270 CegarLoopResult]: At program point L52-3(lines 44 53) the Hoare annotation is: (and (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24)) |ULTIMATE.start_fmax_float_#res|)) (not (fp.eq ULTIMATE.start_fmax_float_~y ULTIMATE.start_fmax_float_~y))) [2020-11-30 02:22:32,628 INFO L274 CegarLoopResult]: For program point L3(line 3) no Hoare annotation was computed. [2020-11-30 02:22:32,628 INFO L274 CegarLoopResult]: For program point L3-1(line 3) no Hoare annotation was computed. [2020-11-30 02:22:32,629 INFO L274 CegarLoopResult]: For program point L32(lines 32 41) no Hoare annotation was computed. [2020-11-30 02:22:32,629 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-11-30 02:22:32,629 INFO L274 CegarLoopResult]: For program point L32-1(lines 32 41) no Hoare annotation was computed. [2020-11-30 02:22:32,629 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-30 02:22:32,629 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-30 02:22:32,629 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-11-30 02:22:32,629 INFO L274 CegarLoopResult]: For program point L24-1(lines 24 28) no Hoare annotation was computed. [2020-11-30 02:22:32,630 INFO L270 CegarLoopResult]: At program point L24-2(lines 24 28) the Hoare annotation is: (and (not (fp.eq ULTIMATE.start_fmax_float_~x ULTIMATE.start_fmax_float_~x)) (not (fp.eq ULTIMATE.start_fmax_float_~y ULTIMATE.start_fmax_float_~y))) [2020-11-30 02:22:32,630 INFO L274 CegarLoopResult]: For program point L24-3(lines 21 42) no Hoare annotation was computed. [2020-11-30 02:22:32,630 INFO L274 CegarLoopResult]: For program point L24-5(lines 24 28) no Hoare annotation was computed. [2020-11-30 02:22:32,630 INFO L270 CegarLoopResult]: At program point L24-6(lines 24 28) the Hoare annotation is: (and (not (fp.eq ULTIMATE.start_fmax_float_~x ULTIMATE.start_fmax_float_~x)) (not (fp.eq ULTIMATE.start_fmax_float_~y ULTIMATE.start_fmax_float_~y))) [2020-11-30 02:22:32,630 INFO L274 CegarLoopResult]: For program point L24-7(lines 21 42) no Hoare annotation was computed. [2020-11-30 02:22:32,630 INFO L274 CegarLoopResult]: For program point L49(lines 49 51) no Hoare annotation was computed. [2020-11-30 02:22:32,630 INFO L274 CegarLoopResult]: For program point L45(lines 45 47) no Hoare annotation was computed. [2020-11-30 02:22:32,631 INFO L270 CegarLoopResult]: At program point L41(lines 21 42) the Hoare annotation is: (and (not (fp.eq ULTIMATE.start_fmax_float_~x ULTIMATE.start_fmax_float_~x)) (not (fp.eq ULTIMATE.start_fmax_float_~y ULTIMATE.start_fmax_float_~y))) [2020-11-30 02:22:32,631 INFO L270 CegarLoopResult]: At program point L41-1(lines 21 42) the Hoare annotation is: (let ((.cse0 (not (fp.eq ULTIMATE.start_fmax_float_~y ULTIMATE.start_fmax_float_~y)))) (or (and (not (fp.eq ULTIMATE.start_fmax_float_~x ULTIMATE.start_fmax_float_~x)) .cse0) (and (not (= (_ bv0 32) |ULTIMATE.start___fpclassify_float_#res|)) .cse0))) [2020-11-30 02:22:32,631 INFO L274 CegarLoopResult]: For program point L66(lines 66 69) no Hoare annotation was computed. [2020-11-30 02:22:32,631 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-30 02:22:32,631 INFO L277 CegarLoopResult]: At program point L71(lines 58 72) the Hoare annotation is: true [2020-11-30 02:22:32,631 INFO L274 CegarLoopResult]: For program point L38(lines 38 41) no Hoare annotation was computed. [2020-11-30 02:22:32,631 INFO L274 CegarLoopResult]: For program point L38-1(lines 38 41) no Hoare annotation was computed. [2020-11-30 02:22:32,632 INFO L274 CegarLoopResult]: For program point L35(lines 35 41) no Hoare annotation was computed. [2020-11-30 02:22:32,632 INFO L274 CegarLoopResult]: For program point L35-1(lines 35 41) no Hoare annotation was computed. [2020-11-30 02:22:32,648 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-30 02:22:32,649 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-30 02:22:32,654 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-30 02:22:32,655 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-30 02:22:32,658 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 02:22:32 BoogieIcfgContainer [2020-11-30 02:22:32,658 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 02:22:32,659 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 02:22:32,661 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 02:22:32,661 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 02:22:32,662 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 02:22:27" (3/4) ... [2020-11-30 02:22:32,665 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-30 02:22:32,681 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2020-11-30 02:22:32,682 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2020-11-30 02:22:32,682 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-11-30 02:22:32,683 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-30 02:22:32,715 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == \result) && !~fp.eq~FLOAT(y, y) [2020-11-30 02:22:32,716 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == \result) && 1bv32 == \result) && !~fp.eq~FLOAT(y, y) [2020-11-30 02:22:32,717 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (!~fp.eq~FLOAT(x, x) && !~fp.eq~FLOAT(y, y)) || (!(0bv32 == \result) && !~fp.eq~FLOAT(y, y)) [2020-11-30 02:22:32,769 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_5ba311b6-e0b8-4343-a688-b5984855f5f4/bin/utaipan/witness.graphml [2020-11-30 02:22:32,769 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 02:22:32,772 INFO L168 Benchmark]: Toolchain (without parser) took 6481.77 ms. Allocated memory was 65.0 MB in the beginning and 96.5 MB in the end (delta: 31.5 MB). Free memory was 48.4 MB in the beginning and 68.1 MB in the end (delta: -19.7 MB). Peak memory consumption was 11.6 MB. Max. memory is 16.1 GB. [2020-11-30 02:22:32,772 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 65.0 MB. Free memory is still 47.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 02:22:32,773 INFO L168 Benchmark]: CACSL2BoogieTranslator took 363.54 ms. Allocated memory is still 65.0 MB. Free memory was 48.1 MB in the beginning and 37.5 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-30 02:22:32,776 INFO L168 Benchmark]: Boogie Procedure Inliner took 118.87 ms. Allocated memory is still 65.0 MB. Free memory was 37.5 MB in the beginning and 49.1 MB in the end (delta: -11.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 02:22:32,777 INFO L168 Benchmark]: Boogie Preprocessor took 35.26 ms. Allocated memory is still 65.0 MB. Free memory was 49.1 MB in the beginning and 47.7 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 02:22:32,777 INFO L168 Benchmark]: RCFGBuilder took 860.54 ms. Allocated memory is still 65.0 MB. Free memory was 47.7 MB in the beginning and 29.5 MB in the end (delta: 18.1 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2020-11-30 02:22:32,778 INFO L168 Benchmark]: TraceAbstraction took 4983.25 ms. Allocated memory was 65.0 MB in the beginning and 96.5 MB in the end (delta: 31.5 MB). Free memory was 29.0 MB in the beginning and 72.3 MB in the end (delta: -43.3 MB). Peak memory consumption was 23.4 MB. Max. memory is 16.1 GB. [2020-11-30 02:22:32,779 INFO L168 Benchmark]: Witness Printer took 110.13 ms. Allocated memory is still 96.5 MB. Free memory was 72.3 MB in the beginning and 68.1 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-30 02:22:32,782 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 65.0 MB. Free memory is still 47.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 363.54 ms. Allocated memory is still 65.0 MB. Free memory was 48.1 MB in the beginning and 37.5 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 118.87 ms. Allocated memory is still 65.0 MB. Free memory was 37.5 MB in the beginning and 49.1 MB in the end (delta: -11.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 35.26 ms. Allocated memory is still 65.0 MB. Free memory was 49.1 MB in the beginning and 47.7 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 860.54 ms. Allocated memory is still 65.0 MB. Free memory was 47.7 MB in the beginning and 29.5 MB in the end (delta: 18.1 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4983.25 ms. Allocated memory was 65.0 MB in the beginning and 96.5 MB in the end (delta: 31.5 MB). Free memory was 29.0 MB in the beginning and 72.3 MB in the end (delta: -43.3 MB). Peak memory consumption was 23.4 MB. Max. memory is 16.1 GB. * Witness Printer took 110.13 ms. Allocated memory is still 96.5 MB. Free memory was 72.3 MB in the beginning and 68.1 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: !~fp.eq~FLOAT(x, x) && !~fp.eq~FLOAT(y, y) - InvariantResult [Line: 44]: Loop Invariant [2020-11-30 02:22:32,796 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-30 02:22:32,796 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == \result) && !~fp.eq~FLOAT(y, y) - InvariantResult [Line: 58]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: !~fp.eq~FLOAT(x, x) && !~fp.eq~FLOAT(y, y) - InvariantResult [Line: 56]: Loop Invariant [2020-11-30 02:22:32,798 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-30 02:22:32,799 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: ((\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == \result) && 1bv32 == \result) && !~fp.eq~FLOAT(y, y) - InvariantResult [Line: 21]: Loop Invariant Derived loop invariant: (!~fp.eq~FLOAT(x, x) && !~fp.eq~FLOAT(y, y)) || (!(0bv32 == \result) && !~fp.eq~FLOAT(y, y)) - InvariantResult [Line: 21]: Loop Invariant Derived loop invariant: !~fp.eq~FLOAT(x, x) && !~fp.eq~FLOAT(y, y) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 29 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.5s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 1.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 182 SDtfs, 117 SDslu, 549 SDs, 0 SdLazy, 138 SolverSat, 19 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 181 GetRequests, 130 SyntacticMatches, 3 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 7 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 1.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=29occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 42 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 19 NumberOfFragments, 74 HoareAnnotationTreeSize, 7 FomulaSimplifications, 231 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 7 FomulaSimplificationsInter, 4 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 88 NumberOfCodeBlocks, 88 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 164 ConstructedInterpolants, 36 QuantifiedInterpolants, 8446 SizeOfPredicates, 32 NumberOfNonLiveVariables, 375 ConjunctsInSsa, 38 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 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 proved your program to be correct! Received shutdown request...