./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_1252b.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_405693f9-d5bc-4cff-b360-f6edb806cf12/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_405693f9-d5bc-4cff-b360-f6edb806cf12/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_405693f9-d5bc-4cff-b360-f6edb806cf12/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_405693f9-d5bc-4cff-b360-f6edb806cf12/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1252b.c -s /tmp/vcloud-vcloud-master/worker/run_dir_405693f9-d5bc-4cff-b360-f6edb806cf12/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_405693f9-d5bc-4cff-b360-f6edb806cf12/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 5fb4ea5d2ba4e3ce5c37a1ed90f4b993cc1661a1 ...................................................................................................................................................................................................................................................................................................... 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_405693f9-d5bc-4cff-b360-f6edb806cf12/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_405693f9-d5bc-4cff-b360-f6edb806cf12/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_405693f9-d5bc-4cff-b360-f6edb806cf12/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_405693f9-d5bc-4cff-b360-f6edb806cf12/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1252b.c -s /tmp/vcloud-vcloud-master/worker/run_dir_405693f9-d5bc-4cff-b360-f6edb806cf12/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_405693f9-d5bc-4cff-b360-f6edb806cf12/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 5fb4ea5d2ba4e3ce5c37a1ed90f4b993cc1661a1 ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-30 03:31:20,823 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 03:31:20,826 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 03:31:20,891 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 03:31:20,892 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 03:31:20,899 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 03:31:20,902 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 03:31:20,906 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 03:31:20,909 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 03:31:20,917 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 03:31:20,918 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 03:31:20,920 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 03:31:20,921 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 03:31:20,925 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 03:31:20,926 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 03:31:20,929 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 03:31:20,930 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 03:31:20,935 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 03:31:20,938 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 03:31:20,949 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 03:31:20,951 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 03:31:20,952 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 03:31:20,955 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 03:31:20,956 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 03:31:20,960 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 03:31:20,960 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 03:31:20,960 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 03:31:20,963 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 03:31:20,964 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 03:31:20,965 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 03:31:20,965 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 03:31:20,966 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 03:31:20,969 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 03:31:20,970 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 03:31:20,971 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 03:31:20,972 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 03:31:20,973 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 03:31:20,973 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 03:31:20,973 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 03:31:20,974 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 03:31:20,975 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 03:31:20,978 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_405693f9-d5bc-4cff-b360-f6edb806cf12/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-30 03:31:21,028 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 03:31:21,028 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 03:31:21,030 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-30 03:31:21,030 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-30 03:31:21,030 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-30 03:31:21,030 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-30 03:31:21,030 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-30 03:31:21,031 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-30 03:31:21,031 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-30 03:31:21,031 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-30 03:31:21,032 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-30 03:31:21,033 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-30 03:31:21,033 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-30 03:31:21,033 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-30 03:31:21,033 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-30 03:31:21,034 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 03:31:21,034 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 03:31:21,034 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 03:31:21,035 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 03:31:21,035 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 03:31:21,035 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 03:31:21,035 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 03:31:21,036 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 03:31:21,036 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-30 03:31:21,036 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 03:31:21,036 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 03:31:21,036 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 03:31:21,037 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 03:31:21,037 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 03:31:21,037 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 03:31:21,037 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 03:31:21,038 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 03:31:21,038 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 03:31:21,038 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 03:31:21,039 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 03:31:21,039 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-30 03:31:21,039 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-30 03:31:21,039 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 03:31:21,039 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 03:31:21,040 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-30 03:31:21,040 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_405693f9-d5bc-4cff-b360-f6edb806cf12/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_405693f9-d5bc-4cff-b360-f6edb806cf12/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5fb4ea5d2ba4e3ce5c37a1ed90f4b993cc1661a1 [2020-11-30 03:31:21,319 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 03:31:21,346 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 03:31:21,349 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 03:31:21,350 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 03:31:21,351 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 03:31:21,352 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_405693f9-d5bc-4cff-b360-f6edb806cf12/bin/utaipan/../../sv-benchmarks/c/float-newlib/float_req_bl_1252b.c [2020-11-30 03:31:21,433 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_405693f9-d5bc-4cff-b360-f6edb806cf12/bin/utaipan/data/96402c0c8/2b457a9aa34b4112b6f9dab3b66d6c71/FLAGffe4abc9d [2020-11-30 03:31:21,969 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 03:31:21,970 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_405693f9-d5bc-4cff-b360-f6edb806cf12/sv-benchmarks/c/float-newlib/float_req_bl_1252b.c [2020-11-30 03:31:21,982 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_405693f9-d5bc-4cff-b360-f6edb806cf12/bin/utaipan/data/96402c0c8/2b457a9aa34b4112b6f9dab3b66d6c71/FLAGffe4abc9d [2020-11-30 03:31:22,316 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_405693f9-d5bc-4cff-b360-f6edb806cf12/bin/utaipan/data/96402c0c8/2b457a9aa34b4112b6f9dab3b66d6c71 [2020-11-30 03:31:22,320 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 03:31:22,324 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 03:31:22,329 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 03:31:22,330 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 03:31:22,334 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 03:31:22,336 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 03:31:22" (1/1) ... [2020-11-30 03:31:22,343 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@256489d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:31:22, skipping insertion in model container [2020-11-30 03:31:22,343 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 03:31:22" (1/1) ... [2020-11-30 03:31:22,352 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 03:31:22,375 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 03:31:22,633 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 03:31:22,642 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 03:31:22,669 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 03:31:22,686 INFO L208 MainTranslator]: Completed translation [2020-11-30 03:31:22,686 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:31:22 WrapperNode [2020-11-30 03:31:22,686 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 03:31:22,688 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 03:31:22,688 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 03:31:22,688 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 03:31:22,695 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:31:22" (1/1) ... [2020-11-30 03:31:22,704 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:31:22" (1/1) ... [2020-11-30 03:31:22,730 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 03:31:22,731 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 03:31:22,731 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 03:31:22,731 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 03:31:22,741 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:31:22" (1/1) ... [2020-11-30 03:31:22,741 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:31:22" (1/1) ... [2020-11-30 03:31:22,744 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:31:22" (1/1) ... [2020-11-30 03:31:22,745 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:31:22" (1/1) ... [2020-11-30 03:31:22,752 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:31:22" (1/1) ... [2020-11-30 03:31:22,757 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:31:22" (1/1) ... [2020-11-30 03:31:22,760 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:31:22" (1/1) ... [2020-11-30 03:31:22,763 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 03:31:22,764 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 03:31:22,764 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 03:31:22,764 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 03:31:22,766 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:31:22" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_405693f9-d5bc-4cff-b360-f6edb806cf12/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 03:31:22,850 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-30 03:31:22,850 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 03:31:22,851 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-11-30 03:31:22,851 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 03:31:22,851 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 03:31:22,851 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-30 03:31:22,851 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-30 03:31:23,781 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 03:31:23,781 INFO L298 CfgBuilder]: Removed 20 assume(true) statements. [2020-11-30 03:31:23,783 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 03:31:23 BoogieIcfgContainer [2020-11-30 03:31:23,783 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 03:31:23,785 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 03:31:23,785 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 03:31:23,789 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 03:31:23,789 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 03:31:22" (1/3) ... [2020-11-30 03:31:23,790 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f0c4053 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 03:31:23, skipping insertion in model container [2020-11-30 03:31:23,790 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:31:22" (2/3) ... [2020-11-30 03:31:23,790 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f0c4053 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 03:31:23, skipping insertion in model container [2020-11-30 03:31:23,791 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 03:31:23" (3/3) ... [2020-11-30 03:31:23,792 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1252b.c [2020-11-30 03:31:23,802 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 03:31:23,807 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-30 03:31:23,818 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-30 03:31:23,854 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 03:31:23,855 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 03:31:23,855 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 03:31:23,855 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 03:31:23,855 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 03:31:23,856 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 03:31:23,856 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 03:31:23,856 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 03:31:23,869 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2020-11-30 03:31:23,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-30 03:31:23,875 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 03:31:23,876 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 03:31:23,876 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 03:31:23,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 03:31:23,885 INFO L82 PathProgramCache]: Analyzing trace with hash 709760188, now seen corresponding path program 1 times [2020-11-30 03:31:23,894 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 03:31:23,895 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167279589] [2020-11-30 03:31:23,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 03:31:23,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 03:31:24,020 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 03:31:24,021 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167279589] [2020-11-30 03:31:24,022 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 03:31:24,022 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 03:31:24,023 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716963274] [2020-11-30 03:31:24,027 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-30 03:31:24,028 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 03:31:24,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-30 03:31:24,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-30 03:31:24,045 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 2 states. [2020-11-30 03:31:24,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 03:31:24,062 INFO L93 Difference]: Finished difference Result 35 states and 51 transitions. [2020-11-30 03:31:24,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-30 03:31:24,063 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-11-30 03:31:24,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 03:31:24,072 INFO L225 Difference]: With dead ends: 35 [2020-11-30 03:31:24,072 INFO L226 Difference]: Without dead ends: 16 [2020-11-30 03:31:24,075 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 03:31:24,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-11-30 03:31:24,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-11-30 03:31:24,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-11-30 03:31:24,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2020-11-30 03:31:24,124 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 8 [2020-11-30 03:31:24,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 03:31:24,124 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2020-11-30 03:31:24,125 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-30 03:31:24,125 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2020-11-30 03:31:24,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-30 03:31:24,125 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 03:31:24,126 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 03:31:24,126 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-30 03:31:24,126 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 03:31:24,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 03:31:24,127 INFO L82 PathProgramCache]: Analyzing trace with hash -1365755737, now seen corresponding path program 1 times [2020-11-30 03:31:24,127 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 03:31:24,128 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063896226] [2020-11-30 03:31:24,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 03:31:24,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 03:31:24,232 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 03:31:24,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 03:31:24,290 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 03:31:24,330 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-11-30 03:31:24,331 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-30 03:31:24,333 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-30 03:31:24,369 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 03:31:24 BoogieIcfgContainer [2020-11-30 03:31:24,369 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 03:31:24,370 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 03:31:24,370 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 03:31:24,371 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 03:31:24,371 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 03:31:23" (3/4) ... [2020-11-30 03:31:24,375 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-30 03:31:24,375 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 03:31:24,380 INFO L168 Benchmark]: Toolchain (without parser) took 2052.68 ms. Allocated memory was 81.8 MB in the beginning and 98.6 MB in the end (delta: 16.8 MB). Free memory was 52.9 MB in the beginning and 68.0 MB in the end (delta: -15.1 MB). Peak memory consumption was 180.0 kB. Max. memory is 16.1 GB. [2020-11-30 03:31:24,381 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 81.8 MB. Free memory is still 36.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 03:31:24,383 INFO L168 Benchmark]: CACSL2BoogieTranslator took 358.00 ms. Allocated memory was 81.8 MB in the beginning and 98.6 MB in the end (delta: 16.8 MB). Free memory was 52.7 MB in the beginning and 74.3 MB in the end (delta: -21.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-30 03:31:24,384 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.65 ms. Allocated memory is still 98.6 MB. Free memory was 74.3 MB in the beginning and 72.7 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 03:31:24,385 INFO L168 Benchmark]: Boogie Preprocessor took 32.20 ms. Allocated memory is still 98.6 MB. Free memory was 72.3 MB in the beginning and 71.3 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 03:31:24,386 INFO L168 Benchmark]: RCFGBuilder took 1019.61 ms. Allocated memory is still 98.6 MB. Free memory was 70.9 MB in the beginning and 60.6 MB in the end (delta: 10.3 MB). Peak memory consumption was 24.8 MB. Max. memory is 16.1 GB. [2020-11-30 03:31:24,388 INFO L168 Benchmark]: TraceAbstraction took 584.28 ms. Allocated memory is still 98.6 MB. Free memory was 60.0 MB in the beginning and 68.6 MB in the end (delta: -8.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 03:31:24,389 INFO L168 Benchmark]: Witness Printer took 5.35 ms. Allocated memory is still 98.6 MB. Free memory is still 68.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 03:31:24,398 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 81.8 MB. Free memory is still 36.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 358.00 ms. Allocated memory was 81.8 MB in the beginning and 98.6 MB in the end (delta: 16.8 MB). Free memory was 52.7 MB in the beginning and 74.3 MB in the end (delta: -21.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 42.65 ms. Allocated memory is still 98.6 MB. Free memory was 74.3 MB in the beginning and 72.7 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 32.20 ms. Allocated memory is still 98.6 MB. Free memory was 72.3 MB in the beginning and 71.3 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 1019.61 ms. Allocated memory is still 98.6 MB. Free memory was 70.9 MB in the beginning and 60.6 MB in the end (delta: 10.3 MB). Peak memory consumption was 24.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 584.28 ms. Allocated memory is still 98.6 MB. Free memory was 60.0 MB in the beginning and 68.6 MB in the end (delta: -8.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 5.35 ms. Allocated memory is still 98.6 MB. Free memory is still 68.0 MB. 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 80, overapproximation of someUnaryFLOAToperation at line 76. Possible FailurePath: [L75] float x = 0.0f; [L76] float y = -0.0f; [L23] __uint32_t w; [L26] ieee_float_shape_type gf_u; [L27] gf_u.value = (x) [L28] EXPR gf_u.word [L28] (w) = gf_u.word [L31] COND FALSE !(w == 0x00000000 || w == 0x80000000) [L33-L34] COND FALSE !((w >= 0x00800000 && w <= 0x7f7fffff) || (w >= 0x80800000 && w <= 0xff7fffff)) [L36-L37] COND FALSE !((w >= 0x00000001 && w <= 0x007fffff) || (w >= 0x80000001 && w <= 0x807fffff)) [L39] COND FALSE !(w == 0x7f800000 || w == 0xff800000) [L42] return 0; [L46] COND TRUE __fpclassify_float(x) == 0 [L47] return y; [L77] float res = fmax_float(x, y); [L80] EXPR res == 0.0f && __signbit_float(res) == 0 [L80] COND TRUE !(res == 0.0f && __signbit_float(res) == 0) [L3] __assert_fail("0", "float_req_bl_1252b.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 18 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.4s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 19 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=18occurred 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, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 17 NumberOfCodeBlocks, 17 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 49 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 03:31:27,090 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 03:31:27,093 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 03:31:27,137 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 03:31:27,139 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 03:31:27,144 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 03:31:27,147 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 03:31:27,152 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 03:31:27,156 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 03:31:27,164 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 03:31:27,165 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 03:31:27,171 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 03:31:27,172 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 03:31:27,180 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 03:31:27,181 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 03:31:27,182 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 03:31:27,183 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 03:31:27,185 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 03:31:27,187 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 03:31:27,190 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 03:31:27,193 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 03:31:27,195 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 03:31:27,200 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 03:31:27,202 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 03:31:27,207 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 03:31:27,213 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 03:31:27,213 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 03:31:27,215 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 03:31:27,217 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 03:31:27,218 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 03:31:27,219 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 03:31:27,220 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 03:31:27,223 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 03:31:27,224 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 03:31:27,225 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 03:31:27,226 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 03:31:27,228 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 03:31:27,228 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 03:31:27,229 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 03:31:27,231 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 03:31:27,232 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 03:31:27,233 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_405693f9-d5bc-4cff-b360-f6edb806cf12/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2020-11-30 03:31:27,305 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 03:31:27,305 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 03:31:27,307 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-30 03:31:27,307 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-30 03:31:27,307 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-30 03:31:27,308 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-30 03:31:27,308 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-30 03:31:27,308 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-30 03:31:27,308 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-30 03:31:27,310 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 03:31:27,311 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 03:31:27,312 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 03:31:27,312 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 03:31:27,312 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 03:31:27,312 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 03:31:27,313 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 03:31:27,313 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-30 03:31:27,313 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-30 03:31:27,313 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-30 03:31:27,313 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 03:31:27,314 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 03:31:27,314 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 03:31:27,314 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 03:31:27,314 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 03:31:27,315 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-30 03:31:27,315 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 03:31:27,315 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 03:31:27,315 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 03:31:27,316 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 03:31:27,316 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 03:31:27,316 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 03:31:27,316 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-11-30 03:31:27,317 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-30 03:31:27,317 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 03:31:27,317 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 03:31:27,317 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-30 03:31:27,318 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_405693f9-d5bc-4cff-b360-f6edb806cf12/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_405693f9-d5bc-4cff-b360-f6edb806cf12/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5fb4ea5d2ba4e3ce5c37a1ed90f4b993cc1661a1 [2020-11-30 03:31:27,809 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 03:31:27,843 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 03:31:27,846 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 03:31:27,848 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 03:31:27,849 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 03:31:27,850 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_405693f9-d5bc-4cff-b360-f6edb806cf12/bin/utaipan/../../sv-benchmarks/c/float-newlib/float_req_bl_1252b.c [2020-11-30 03:31:27,933 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_405693f9-d5bc-4cff-b360-f6edb806cf12/bin/utaipan/data/12776a623/2da8de37cbd74ab385cd9eec24496a06/FLAG0e3f7f02a [2020-11-30 03:31:28,494 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 03:31:28,494 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_405693f9-d5bc-4cff-b360-f6edb806cf12/sv-benchmarks/c/float-newlib/float_req_bl_1252b.c [2020-11-30 03:31:28,509 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_405693f9-d5bc-4cff-b360-f6edb806cf12/bin/utaipan/data/12776a623/2da8de37cbd74ab385cd9eec24496a06/FLAG0e3f7f02a [2020-11-30 03:31:28,863 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_405693f9-d5bc-4cff-b360-f6edb806cf12/bin/utaipan/data/12776a623/2da8de37cbd74ab385cd9eec24496a06 [2020-11-30 03:31:28,866 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 03:31:28,868 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 03:31:28,870 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 03:31:28,870 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 03:31:28,874 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 03:31:28,875 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 03:31:28" (1/1) ... [2020-11-30 03:31:28,877 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b50de65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:31:28, skipping insertion in model container [2020-11-30 03:31:28,877 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 03:31:28" (1/1) ... [2020-11-30 03:31:28,891 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 03:31:28,909 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 03:31:29,078 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 03:31:29,092 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 03:31:29,120 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 03:31:29,156 INFO L208 MainTranslator]: Completed translation [2020-11-30 03:31:29,156 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:31:29 WrapperNode [2020-11-30 03:31:29,157 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 03:31:29,158 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 03:31:29,158 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 03:31:29,158 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 03:31:29,166 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:31:29" (1/1) ... [2020-11-30 03:31:29,222 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:31:29" (1/1) ... [2020-11-30 03:31:29,255 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 03:31:29,256 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 03:31:29,256 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 03:31:29,257 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 03:31:29,266 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:31:29" (1/1) ... [2020-11-30 03:31:29,266 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:31:29" (1/1) ... [2020-11-30 03:31:29,271 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:31:29" (1/1) ... [2020-11-30 03:31:29,271 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:31:29" (1/1) ... [2020-11-30 03:31:29,297 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:31:29" (1/1) ... [2020-11-30 03:31:29,308 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:31:29" (1/1) ... [2020-11-30 03:31:29,313 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:31:29" (1/1) ... [2020-11-30 03:31:29,326 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 03:31:29,327 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 03:31:29,327 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 03:31:29,332 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 03:31:29,333 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:31:29" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_405693f9-d5bc-4cff-b360-f6edb806cf12/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 03:31:29,394 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-30 03:31:29,394 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 03:31:29,394 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-11-30 03:31:29,395 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 03:31:29,395 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 03:31:29,395 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2020-11-30 03:31:29,395 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-30 03:31:30,059 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 03:31:30,060 INFO L298 CfgBuilder]: Removed 20 assume(true) statements. [2020-11-30 03:31:30,062 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 03:31:30 BoogieIcfgContainer [2020-11-30 03:31:30,063 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 03:31:30,065 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 03:31:30,065 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 03:31:30,069 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 03:31:30,071 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 03:31:28" (1/3) ... [2020-11-30 03:31:30,072 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60824042 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 03:31:30, skipping insertion in model container [2020-11-30 03:31:30,073 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 03:31:29" (2/3) ... [2020-11-30 03:31:30,073 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60824042 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 03:31:30, skipping insertion in model container [2020-11-30 03:31:30,074 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 03:31:30" (3/3) ... [2020-11-30 03:31:30,075 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1252b.c [2020-11-30 03:31:30,088 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 03:31:30,093 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-30 03:31:30,110 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-30 03:31:30,154 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 03:31:30,154 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 03:31:30,155 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 03:31:30,155 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 03:31:30,155 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 03:31:30,155 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 03:31:30,156 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 03:31:30,156 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 03:31:30,174 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2020-11-30 03:31:30,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-30 03:31:30,183 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 03:31:30,184 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 03:31:30,185 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 03:31:30,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 03:31:30,192 INFO L82 PathProgramCache]: Analyzing trace with hash -958075201, now seen corresponding path program 1 times [2020-11-30 03:31:30,207 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-30 03:31:30,208 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [384275055] [2020-11-30 03:31:30,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_405693f9-d5bc-4cff-b360-f6edb806cf12/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 03:31:30,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 03:31:30,358 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 1 conjunts are in the unsatisfiable core [2020-11-30 03:31:30,363 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 03:31:30,388 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 03:31:30,389 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 03:31:30,395 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 03:31:30,397 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [384275055] [2020-11-30 03:31:30,397 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 03:31:30,398 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-11-30 03:31:30,399 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734266231] [2020-11-30 03:31:30,404 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-30 03:31:30,405 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-30 03:31:30,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-30 03:31:30,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-30 03:31:30,426 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 2 states. [2020-11-30 03:31:30,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 03:31:30,452 INFO L93 Difference]: Finished difference Result 63 states and 99 transitions. [2020-11-30 03:31:30,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-30 03:31:30,457 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-11-30 03:31:30,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 03:31:30,478 INFO L225 Difference]: With dead ends: 63 [2020-11-30 03:31:30,483 INFO L226 Difference]: Without dead ends: 29 [2020-11-30 03:31:30,487 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 03:31:30,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-11-30 03:31:30,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-11-30 03:31:30,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-11-30 03:31:30,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 40 transitions. [2020-11-30 03:31:30,536 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 40 transitions. Word has length 10 [2020-11-30 03:31:30,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 03:31:30,537 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 40 transitions. [2020-11-30 03:31:30,537 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-30 03:31:30,537 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 40 transitions. [2020-11-30 03:31:30,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-30 03:31:30,539 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 03:31:30,539 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 03:31:30,755 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-30 03:31:30,755 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 03:31:30,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 03:31:30,758 INFO L82 PathProgramCache]: Analyzing trace with hash 1001584898, now seen corresponding path program 1 times [2020-11-30 03:31:30,762 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-30 03:31:30,763 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1276718716] [2020-11-30 03:31:30,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_405693f9-d5bc-4cff-b360-f6edb806cf12/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 03:31:30,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 03:31:30,843 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-30 03:31:30,845 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 03:31:30,885 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 03:31:30,885 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 03:31:30,918 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 03:31:30,919 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1276718716] [2020-11-30 03:31:30,919 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 03:31:30,919 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2020-11-30 03:31:30,919 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138580284] [2020-11-30 03:31:30,921 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-30 03:31:30,921 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-30 03:31:30,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-30 03:31:30,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-30 03:31:30,922 INFO L87 Difference]: Start difference. First operand 29 states and 40 transitions. Second operand 6 states. [2020-11-30 03:31:31,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 03:31:31,045 INFO L93 Difference]: Finished difference Result 68 states and 85 transitions. [2020-11-30 03:31:31,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-30 03:31:31,046 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2020-11-30 03:31:31,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 03:31:31,047 INFO L225 Difference]: With dead ends: 68 [2020-11-30 03:31:31,047 INFO L226 Difference]: Without dead ends: 59 [2020-11-30 03:31:31,048 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 03:31:31,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-11-30 03:31:31,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 31. [2020-11-30 03:31:31,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-11-30 03:31:31,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2020-11-30 03:31:31,057 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 11 [2020-11-30 03:31:31,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 03:31:31,057 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2020-11-30 03:31:31,057 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-30 03:31:31,058 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2020-11-30 03:31:31,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-30 03:31:31,058 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 03:31:31,059 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 03:31:31,271 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-30 03:31:31,272 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 03:31:31,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 03:31:31,276 INFO L82 PathProgramCache]: Analyzing trace with hash 1219247017, now seen corresponding path program 1 times [2020-11-30 03:31:31,276 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-30 03:31:31,276 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1108937067] [2020-11-30 03:31:31,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_405693f9-d5bc-4cff-b360-f6edb806cf12/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 03:31:31,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 03:31:31,359 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-30 03:31:31,361 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 03:31:31,393 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 03:31:31,394 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 03:31:31,481 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 03:31:31,481 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1108937067] [2020-11-30 03:31:31,482 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 03:31:31,482 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2020-11-30 03:31:31,482 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293486139] [2020-11-30 03:31:31,482 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 03:31:31,483 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-30 03:31:31,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 03:31:31,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 03:31:31,484 INFO L87 Difference]: Start difference. First operand 31 states and 42 transitions. Second operand 4 states. [2020-11-30 03:31:31,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 03:31:31,570 INFO L93 Difference]: Finished difference Result 52 states and 69 transitions. [2020-11-30 03:31:31,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 03:31:31,572 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-11-30 03:31:31,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 03:31:31,573 INFO L225 Difference]: With dead ends: 52 [2020-11-30 03:31:31,573 INFO L226 Difference]: Without dead ends: 26 [2020-11-30 03:31:31,574 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-30 03:31:31,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-11-30 03:31:31,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-11-30 03:31:31,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-11-30 03:31:31,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 32 transitions. [2020-11-30 03:31:31,578 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 32 transitions. Word has length 14 [2020-11-30 03:31:31,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 03:31:31,579 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 32 transitions. [2020-11-30 03:31:31,579 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 03:31:31,579 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 32 transitions. [2020-11-30 03:31:31,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-30 03:31:31,584 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 03:31:31,584 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 03:31:31,796 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-11-30 03:31:31,796 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 03:31:31,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 03:31:31,797 INFO L82 PathProgramCache]: Analyzing trace with hash 1012446717, now seen corresponding path program 1 times [2020-11-30 03:31:31,797 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-30 03:31:31,798 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2089357169] [2020-11-30 03:31:31,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_405693f9-d5bc-4cff-b360-f6edb806cf12/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 03:31:31,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 03:31:31,894 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-30 03:31:31,896 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 03:31:31,919 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 03:31:31,919 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 03:31:31,956 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 03:31:31,957 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2089357169] [2020-11-30 03:31:31,957 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 03:31:31,957 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2020-11-30 03:31:31,957 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398808048] [2020-11-30 03:31:31,958 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-30 03:31:31,958 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-30 03:31:31,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-30 03:31:31,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-30 03:31:31,959 INFO L87 Difference]: Start difference. First operand 26 states and 32 transitions. Second operand 6 states. [2020-11-30 03:31:32,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 03:31:32,091 INFO L93 Difference]: Finished difference Result 61 states and 71 transitions. [2020-11-30 03:31:32,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-30 03:31:32,095 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-11-30 03:31:32,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 03:31:32,096 INFO L225 Difference]: With dead ends: 61 [2020-11-30 03:31:32,097 INFO L226 Difference]: Without dead ends: 52 [2020-11-30 03:31:32,097 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 03:31:32,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-11-30 03:31:32,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 28. [2020-11-30 03:31:32,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-11-30 03:31:32,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 34 transitions. [2020-11-30 03:31:32,109 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 34 transitions. Word has length 16 [2020-11-30 03:31:32,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 03:31:32,109 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 34 transitions. [2020-11-30 03:31:32,109 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-30 03:31:32,109 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 34 transitions. [2020-11-30 03:31:32,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-30 03:31:32,112 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 03:31:32,112 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 03:31:32,336 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-11-30 03:31:32,336 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 03:31:32,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 03:31:32,337 INFO L82 PathProgramCache]: Analyzing trace with hash -414082333, now seen corresponding path program 1 times [2020-11-30 03:31:32,337 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-30 03:31:32,338 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1168207041] [2020-11-30 03:31:32,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_405693f9-d5bc-4cff-b360-f6edb806cf12/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 03:31:32,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 03:31:32,440 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-30 03:31:32,442 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 03:31:32,475 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 03:31:32,475 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 03:31:32,499 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 03:31:32,499 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1168207041] [2020-11-30 03:31:32,499 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 03:31:32,499 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-11-30 03:31:32,500 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963754601] [2020-11-30 03:31:32,500 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 03:31:32,500 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-30 03:31:32,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 03:31:32,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-30 03:31:32,501 INFO L87 Difference]: Start difference. First operand 28 states and 34 transitions. Second operand 4 states. [2020-11-30 03:31:32,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 03:31:32,515 INFO L93 Difference]: Finished difference Result 38 states and 44 transitions. [2020-11-30 03:31:32,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 03:31:32,517 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-11-30 03:31:32,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 03:31:32,518 INFO L225 Difference]: With dead ends: 38 [2020-11-30 03:31:32,518 INFO L226 Difference]: Without dead ends: 28 [2020-11-30 03:31:32,519 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 30 SyntacticMatches, 2 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-30 03:31:32,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-11-30 03:31:32,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-11-30 03:31:32,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-11-30 03:31:32,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 33 transitions. [2020-11-30 03:31:32,524 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 33 transitions. Word has length 18 [2020-11-30 03:31:32,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 03:31:32,524 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 33 transitions. [2020-11-30 03:31:32,524 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 03:31:32,525 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 33 transitions. [2020-11-30 03:31:32,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-30 03:31:32,525 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 03:31:32,525 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 03:31:32,736 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-11-30 03:31:32,736 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 03:31:32,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 03:31:32,736 INFO L82 PathProgramCache]: Analyzing trace with hash -356824031, now seen corresponding path program 1 times [2020-11-30 03:31:32,737 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-30 03:31:32,737 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [467174126] [2020-11-30 03:31:32,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_405693f9-d5bc-4cff-b360-f6edb806cf12/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 03:31:32,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 03:31:32,861 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-30 03:31:32,862 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 03:31:32,937 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 03:31:32,938 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 03:31:33,106 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 03:31:33,106 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [467174126] [2020-11-30 03:31:33,107 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 03:31:33,107 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 9 [2020-11-30 03:31:33,107 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597120662] [2020-11-30 03:31:33,107 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-30 03:31:33,108 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-30 03:31:33,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-30 03:31:33,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-11-30 03:31:33,109 INFO L87 Difference]: Start difference. First operand 28 states and 33 transitions. Second operand 9 states. [2020-11-30 03:31:33,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 03:31:33,246 INFO L93 Difference]: Finished difference Result 40 states and 44 transitions. [2020-11-30 03:31:33,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-30 03:31:33,247 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 18 [2020-11-30 03:31:33,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 03:31:33,248 INFO L225 Difference]: With dead ends: 40 [2020-11-30 03:31:33,248 INFO L226 Difference]: Without dead ends: 37 [2020-11-30 03:31:33,248 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2020-11-30 03:31:33,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-11-30 03:31:33,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 30. [2020-11-30 03:31:33,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-11-30 03:31:33,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 35 transitions. [2020-11-30 03:31:33,253 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 35 transitions. Word has length 18 [2020-11-30 03:31:33,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 03:31:33,254 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 35 transitions. [2020-11-30 03:31:33,254 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-30 03:31:33,254 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 35 transitions. [2020-11-30 03:31:33,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-30 03:31:33,255 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 03:31:33,255 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 03:31:33,471 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2020-11-30 03:31:33,471 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 03:31:33,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 03:31:33,472 INFO L82 PathProgramCache]: Analyzing trace with hash -208358251, now seen corresponding path program 1 times [2020-11-30 03:31:33,472 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-30 03:31:33,473 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [575371160] [2020-11-30 03:31:33,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_405693f9-d5bc-4cff-b360-f6edb806cf12/bin/utaipan/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2020-11-30 03:31:33,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 03:31:33,576 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-30 03:31:33,579 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 03:31:33,636 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 03:31:33,636 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 03:31:33,674 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 03:31:33,675 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [575371160] [2020-11-30 03:31:33,675 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 03:31:33,675 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2020-11-30 03:31:33,675 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982165119] [2020-11-30 03:31:33,675 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-30 03:31:33,676 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-30 03:31:33,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-30 03:31:33,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-30 03:31:33,676 INFO L87 Difference]: Start difference. First operand 30 states and 35 transitions. Second operand 5 states. [2020-11-30 03:31:33,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 03:31:33,746 INFO L93 Difference]: Finished difference Result 43 states and 47 transitions. [2020-11-30 03:31:33,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-30 03:31:33,752 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2020-11-30 03:31:33,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 03:31:33,752 INFO L225 Difference]: With dead ends: 43 [2020-11-30 03:31:33,752 INFO L226 Difference]: Without dead ends: 23 [2020-11-30 03:31:33,753 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 31 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-11-30 03:31:33,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-11-30 03:31:33,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-11-30 03:31:33,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-11-30 03:31:33,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 22 transitions. [2020-11-30 03:31:33,757 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 22 transitions. Word has length 19 [2020-11-30 03:31:33,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 03:31:33,757 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 22 transitions. [2020-11-30 03:31:33,757 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-30 03:31:33,757 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 22 transitions. [2020-11-30 03:31:33,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-30 03:31:33,758 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 03:31:33,758 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 03:31:33,958 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2020-11-30 03:31:33,959 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 03:31:33,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 03:31:33,959 INFO L82 PathProgramCache]: Analyzing trace with hash -1524231306, now seen corresponding path program 1 times [2020-11-30 03:31:33,959 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-30 03:31:33,960 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1090252543] [2020-11-30 03:31:33,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_405693f9-d5bc-4cff-b360-f6edb806cf12/bin/utaipan/mathsat Starting monitored process 9 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with mathsat -unsat_core_generation=3 [2020-11-30 03:31:34,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 03:31:34,096 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 03:31:34,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 03:31:34,214 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 03:31:34,276 INFO L173 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2020-11-30 03:31:34,276 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-30 03:31:34,486 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3 [2020-11-30 03:31:34,536 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 03:31:34 BoogieIcfgContainer [2020-11-30 03:31:34,536 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 03:31:34,537 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 03:31:34,537 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 03:31:34,537 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 03:31:34,538 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 03:31:30" (3/4) ... [2020-11-30 03:31:34,542 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-30 03:31:34,620 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_405693f9-d5bc-4cff-b360-f6edb806cf12/bin/utaipan/witness.graphml [2020-11-30 03:31:34,620 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 03:31:34,622 INFO L168 Benchmark]: Toolchain (without parser) took 5752.96 ms. Allocated memory was 60.8 MB in the beginning and 88.1 MB in the end (delta: 27.3 MB). Free memory was 38.7 MB in the beginning and 68.1 MB in the end (delta: -29.4 MB). Peak memory consumption was 31.0 MB. Max. memory is 16.1 GB. [2020-11-30 03:31:34,623 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 60.8 MB. Free memory was 41.7 MB in the beginning and 41.7 MB in the end (delta: 27.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 03:31:34,623 INFO L168 Benchmark]: CACSL2BoogieTranslator took 287.21 ms. Allocated memory is still 60.8 MB. Free memory was 38.5 MB in the beginning and 43.0 MB in the end (delta: -4.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-30 03:31:34,624 INFO L168 Benchmark]: Boogie Procedure Inliner took 97.62 ms. Allocated memory is still 60.8 MB. Free memory was 42.8 MB in the beginning and 42.9 MB in the end (delta: -82.4 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 03:31:34,625 INFO L168 Benchmark]: Boogie Preprocessor took 70.06 ms. Allocated memory is still 60.8 MB. Free memory was 42.9 MB in the beginning and 41.3 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 03:31:34,625 INFO L168 Benchmark]: RCFGBuilder took 735.57 ms. Allocated memory was 60.8 MB in the beginning and 73.4 MB in the end (delta: 12.6 MB). Free memory was 41.3 MB in the beginning and 47.3 MB in the end (delta: -6.0 MB). Peak memory consumption was 15.9 MB. Max. memory is 16.1 GB. [2020-11-30 03:31:34,626 INFO L168 Benchmark]: TraceAbstraction took 4471.53 ms. Allocated memory was 73.4 MB in the beginning and 88.1 MB in the end (delta: 14.7 MB). Free memory was 46.9 MB in the beginning and 36.9 MB in the end (delta: 10.0 MB). Peak memory consumption was 24.3 MB. Max. memory is 16.1 GB. [2020-11-30 03:31:34,627 INFO L168 Benchmark]: Witness Printer took 82.96 ms. Allocated memory is still 88.1 MB. Free memory was 36.9 MB in the beginning and 68.1 MB in the end (delta: -31.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 03:31:34,631 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 60.8 MB. Free memory was 41.7 MB in the beginning and 41.7 MB in the end (delta: 27.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 287.21 ms. Allocated memory is still 60.8 MB. Free memory was 38.5 MB in the beginning and 43.0 MB in the end (delta: -4.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 97.62 ms. Allocated memory is still 60.8 MB. Free memory was 42.8 MB in the beginning and 42.9 MB in the end (delta: -82.4 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 70.06 ms. Allocated memory is still 60.8 MB. Free memory was 42.9 MB in the beginning and 41.3 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 735.57 ms. Allocated memory was 60.8 MB in the beginning and 73.4 MB in the end (delta: 12.6 MB). Free memory was 41.3 MB in the beginning and 47.3 MB in the end (delta: -6.0 MB). Peak memory consumption was 15.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4471.53 ms. Allocated memory was 73.4 MB in the beginning and 88.1 MB in the end (delta: 14.7 MB). Free memory was 46.9 MB in the beginning and 36.9 MB in the end (delta: 10.0 MB). Peak memory consumption was 24.3 MB. Max. memory is 16.1 GB. * Witness Printer took 82.96 ms. Allocated memory is still 88.1 MB. Free memory was 36.9 MB in the beginning and 68.1 MB in the end (delta: -31.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L75] float x = 0.0f; [L76] float y = -0.0f; [L23] __uint32_t w; [L26] ieee_float_shape_type gf_u; [L27] gf_u.value = (x) [L28] EXPR gf_u.word [L28] (w) = gf_u.word [L31] COND TRUE w == 0x00000000 || w == 0x80000000 [L32] return 2; [L46] COND FALSE !(__fpclassify_float(x) == 0) [L23] __uint32_t w; [L26] ieee_float_shape_type gf_u; [L27] gf_u.value = (x) [L28] EXPR gf_u.word [L28] (w) = gf_u.word [L31] COND TRUE w == 0x00000000 || w == 0x80000000 [L32] return 2; [L50] COND FALSE !(__fpclassify_float(y) == 0) [L53] EXPR x > y ? x : y [L53] return x > y ? x : y; [L77] float res = fmax_float(x, y); [L80] EXPR res == 0.0f && __signbit_float(res) == 0 [L57] __uint32_t w; [L60] ieee_float_shape_type gf_u; [L61] gf_u.value = (x) [L62] EXPR gf_u.word [L62] (w) = gf_u.word [L65] return (w & 0x80000000) != 0; [L80] EXPR res == 0.0f && __signbit_float(res) == 0 [L80] COND TRUE !(res == 0.0f && __signbit_float(res) == 0) [L3] __assert_fail("0", "float_req_bl_1252b.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 33 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 4.3s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 222 SDtfs, 175 SDslu, 301 SDs, 0 SdLazy, 100 SolverSat, 15 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 209 GetRequests, 169 SyntacticMatches, 7 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred 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, 7 MinimizatonAttempts, 59 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 128 NumberOfCodeBlocks, 128 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 198 ConstructedInterpolants, 0 QuantifiedInterpolants, 7973 SizeOfPredicates, 27 NumberOfNonLiveVariables, 433 ConjunctsInSsa, 40 ConjunctsInUnsatCore, 14 InterpolantComputations, 14 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 incorrect! Received shutdown request...