./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/double_req_bl_1072d.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_86181b26-2b53-4325-b5bf-d18548c89586/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_86181b26-2b53-4325-b5bf-d18548c89586/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_86181b26-2b53-4325-b5bf-d18548c89586/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_86181b26-2b53-4325-b5bf-d18548c89586/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1072d.c -s /tmp/vcloud-vcloud-master/worker/run_dir_86181b26-2b53-4325-b5bf-d18548c89586/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_86181b26-2b53-4325-b5bf-d18548c89586/bin/uautomizer --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 965a8d1f86759d0c7cab56eb22958b9f714cfb2b ........................................................................................................................................................................................................................................................................................................ 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_86181b26-2b53-4325-b5bf-d18548c89586/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_86181b26-2b53-4325-b5bf-d18548c89586/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_86181b26-2b53-4325-b5bf-d18548c89586/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_86181b26-2b53-4325-b5bf-d18548c89586/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1072d.c -s /tmp/vcloud-vcloud-master/worker/run_dir_86181b26-2b53-4325-b5bf-d18548c89586/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_86181b26-2b53-4325-b5bf-d18548c89586/bin/uautomizer --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 965a8d1f86759d0c7cab56eb22958b9f714cfb2b .................................................................................................................................................................................................................................................................................................................... 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 [2020-11-29 23:37:47,755 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 23:37:47,778 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 23:37:47,842 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 23:37:47,843 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 23:37:47,844 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 23:37:47,846 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 23:37:47,849 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 23:37:47,852 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 23:37:47,853 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 23:37:47,854 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 23:37:47,856 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 23:37:47,857 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 23:37:47,858 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 23:37:47,860 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 23:37:47,862 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 23:37:47,863 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 23:37:47,865 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 23:37:47,867 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 23:37:47,870 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 23:37:47,873 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 23:37:47,874 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 23:37:47,876 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 23:37:47,878 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 23:37:47,882 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 23:37:47,883 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 23:37:47,883 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 23:37:47,885 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 23:37:47,885 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 23:37:47,887 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 23:37:47,887 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 23:37:47,889 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 23:37:47,890 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 23:37:47,891 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 23:37:47,892 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 23:37:47,893 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 23:37:47,894 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 23:37:47,895 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 23:37:47,895 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 23:37:47,897 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 23:37:47,898 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 23:37:47,899 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_86181b26-2b53-4325-b5bf-d18548c89586/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-29 23:37:47,925 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 23:37:47,926 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 23:37:47,927 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 23:37:47,927 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 23:37:47,928 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 23:37:47,928 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 23:37:47,928 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 23:37:47,929 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 23:37:47,929 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 23:37:47,929 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 23:37:47,930 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 23:37:47,930 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 23:37:47,930 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 23:37:47,930 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 23:37:47,931 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 23:37:47,931 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 23:37:47,931 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 23:37:47,931 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 23:37:47,932 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 23:37:47,932 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 23:37:47,932 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 23:37:47,933 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 23:37:47,933 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 23:37:47,933 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 23:37:47,933 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 23:37:47,934 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 23:37:47,934 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 23:37:47,934 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 23:37:47,934 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 23:37:47,935 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_86181b26-2b53-4325-b5bf-d18548c89586/bin/uautomizer/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_86181b26-2b53-4325-b5bf-d18548c89586/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 965a8d1f86759d0c7cab56eb22958b9f714cfb2b [2020-11-29 23:37:48,206 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 23:37:48,230 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 23:37:48,233 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 23:37:48,235 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 23:37:48,236 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 23:37:48,237 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_86181b26-2b53-4325-b5bf-d18548c89586/bin/uautomizer/../../sv-benchmarks/c/float-newlib/double_req_bl_1072d.c [2020-11-29 23:37:48,321 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_86181b26-2b53-4325-b5bf-d18548c89586/bin/uautomizer/data/8cb82a5b1/f2c9f4002f574bcaae6eff876b0c38ce/FLAG01710ec54 [2020-11-29 23:37:48,918 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 23:37:48,918 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_86181b26-2b53-4325-b5bf-d18548c89586/sv-benchmarks/c/float-newlib/double_req_bl_1072d.c [2020-11-29 23:37:48,926 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_86181b26-2b53-4325-b5bf-d18548c89586/bin/uautomizer/data/8cb82a5b1/f2c9f4002f574bcaae6eff876b0c38ce/FLAG01710ec54 [2020-11-29 23:37:48,939 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_86181b26-2b53-4325-b5bf-d18548c89586/bin/uautomizer/data/8cb82a5b1/f2c9f4002f574bcaae6eff876b0c38ce [2020-11-29 23:37:48,942 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 23:37:48,943 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 23:37:48,945 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 23:37:48,945 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 23:37:48,948 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 23:37:48,949 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 11:37:48" (1/1) ... [2020-11-29 23:37:48,951 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9eb1036 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:37:48, skipping insertion in model container [2020-11-29 23:37:48,951 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 11:37:48" (1/1) ... [2020-11-29 23:37:48,963 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 23:37:48,984 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 23:37:49,224 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 23:37:49,241 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 23:37:49,304 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 23:37:49,330 INFO L208 MainTranslator]: Completed translation [2020-11-29 23:37:49,330 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:37:49 WrapperNode [2020-11-29 23:37:49,331 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 23:37:49,332 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 23:37:49,332 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 23:37:49,333 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 23:37:49,341 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:37:49" (1/1) ... [2020-11-29 23:37:49,363 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:37:49" (1/1) ... [2020-11-29 23:37:49,405 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 23:37:49,407 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 23:37:49,408 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 23:37:49,409 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 23:37:49,418 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:37:49" (1/1) ... [2020-11-29 23:37:49,418 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:37:49" (1/1) ... [2020-11-29 23:37:49,438 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:37:49" (1/1) ... [2020-11-29 23:37:49,438 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:37:49" (1/1) ... [2020-11-29 23:37:49,447 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:37:49" (1/1) ... [2020-11-29 23:37:49,453 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:37:49" (1/1) ... [2020-11-29 23:37:49,456 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:37:49" (1/1) ... [2020-11-29 23:37:49,459 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 23:37:49,460 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 23:37:49,460 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 23:37:49,460 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 23:37:49,461 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:37:49" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_86181b26-2b53-4325-b5bf-d18548c89586/bin/uautomizer/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 [2020-11-29 23:37:49,537 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 23:37:49,537 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 23:37:49,537 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-11-29 23:37:49,539 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-29 23:37:49,539 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-11-29 23:37:49,539 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 23:37:49,540 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 23:37:49,540 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-29 23:37:49,540 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-29 23:37:50,039 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 23:37:50,040 INFO L298 CfgBuilder]: Removed 20 assume(true) statements. [2020-11-29 23:37:50,041 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 11:37:50 BoogieIcfgContainer [2020-11-29 23:37:50,041 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 23:37:50,043 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 23:37:50,043 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 23:37:50,046 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 23:37:50,047 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 11:37:48" (1/3) ... [2020-11-29 23:37:50,047 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cb3d41c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 11:37:50, skipping insertion in model container [2020-11-29 23:37:50,048 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:37:49" (2/3) ... [2020-11-29 23:37:50,048 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cb3d41c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 11:37:50, skipping insertion in model container [2020-11-29 23:37:50,048 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 11:37:50" (3/3) ... [2020-11-29 23:37:50,050 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1072d.c [2020-11-29 23:37:50,061 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 23:37:50,065 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-29 23:37:50,094 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-29 23:37:50,119 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 23:37:50,119 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 23:37:50,119 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 23:37:50,120 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 23:37:50,120 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 23:37:50,120 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 23:37:50,120 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 23:37:50,120 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 23:37:50,134 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2020-11-29 23:37:50,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-29 23:37:50,140 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:37:50,140 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:37:50,141 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:37:50,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:37:50,147 INFO L82 PathProgramCache]: Analyzing trace with hash 748040733, now seen corresponding path program 1 times [2020-11-29 23:37:50,156 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:37:50,156 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995635314] [2020-11-29 23:37:50,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:37:50,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:37:50,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:37:50,335 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995635314] [2020-11-29 23:37:50,335 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:37:50,336 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 23:37:50,337 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046352930] [2020-11-29 23:37:50,341 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-29 23:37:50,341 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:37:50,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-29 23:37:50,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 23:37:50,358 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 2 states. [2020-11-29 23:37:50,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:37:50,382 INFO L93 Difference]: Finished difference Result 53 states and 81 transitions. [2020-11-29 23:37:50,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-29 23:37:50,383 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2020-11-29 23:37:50,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:37:50,405 INFO L225 Difference]: With dead ends: 53 [2020-11-29 23:37:50,405 INFO L226 Difference]: Without dead ends: 24 [2020-11-29 23:37:50,408 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 [2020-11-29 23:37:50,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-11-29 23:37:50,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2020-11-29 23:37:50,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-11-29 23:37:50,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2020-11-29 23:37:50,456 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 13 [2020-11-29 23:37:50,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:37:50,456 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2020-11-29 23:37:50,456 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-29 23:37:50,456 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2020-11-29 23:37:50,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-29 23:37:50,458 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:37:50,458 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:37:50,458 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-29 23:37:50,459 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:37:50,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:37:50,462 INFO L82 PathProgramCache]: Analyzing trace with hash 1214246053, now seen corresponding path program 1 times [2020-11-29 23:37:50,462 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:37:50,463 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028450135] [2020-11-29 23:37:50,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:37:50,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:37:50,665 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:37:50,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:37:50,795 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:37:50,847 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 23:37:50,848 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-29 23:37:50,850 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-29 23:37:50,898 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 11:37:50 BoogieIcfgContainer [2020-11-29 23:37:50,899 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 23:37:50,899 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 23:37:50,900 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 23:37:50,900 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 23:37:50,901 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 11:37:50" (3/4) ... [2020-11-29 23:37:50,904 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-29 23:37:50,904 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 23:37:50,908 INFO L168 Benchmark]: Toolchain (without parser) took 1961.90 ms. Allocated memory was 86.0 MB in the beginning and 115.3 MB in the end (delta: 29.4 MB). Free memory was 54.3 MB in the beginning and 66.6 MB in the end (delta: -12.3 MB). Peak memory consumption was 17.7 MB. Max. memory is 16.1 GB. [2020-11-29 23:37:50,909 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 86.0 MB. Free memory was 45.3 MB in the beginning and 45.2 MB in the end (delta: 40.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 23:37:50,910 INFO L168 Benchmark]: CACSL2BoogieTranslator took 386.29 ms. Allocated memory is still 86.0 MB. Free memory was 54.0 MB in the beginning and 62.3 MB in the end (delta: -8.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-29 23:37:50,911 INFO L168 Benchmark]: Boogie Procedure Inliner took 74.34 ms. Allocated memory is still 86.0 MB. Free memory was 62.3 MB in the beginning and 60.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 23:37:50,912 INFO L168 Benchmark]: Boogie Preprocessor took 51.72 ms. Allocated memory is still 86.0 MB. Free memory was 60.2 MB in the beginning and 58.7 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 23:37:50,914 INFO L168 Benchmark]: RCFGBuilder took 581.76 ms. Allocated memory is still 86.0 MB. Free memory was 58.7 MB in the beginning and 37.1 MB in the end (delta: 21.6 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. [2020-11-29 23:37:50,915 INFO L168 Benchmark]: TraceAbstraction took 855.80 ms. Allocated memory was 86.0 MB in the beginning and 115.3 MB in the end (delta: 29.4 MB). Free memory was 36.5 MB in the beginning and 67.2 MB in the end (delta: -30.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 23:37:50,916 INFO L168 Benchmark]: Witness Printer took 4.71 ms. Allocated memory is still 115.3 MB. Free memory was 67.2 MB in the beginning and 66.6 MB in the end (delta: 551.3 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 23:37:50,928 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 86.0 MB. Free memory was 45.3 MB in the beginning and 45.2 MB in the end (delta: 40.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 386.29 ms. Allocated memory is still 86.0 MB. Free memory was 54.0 MB in the beginning and 62.3 MB in the end (delta: -8.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 74.34 ms. Allocated memory is still 86.0 MB. Free memory was 62.3 MB in the beginning and 60.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 51.72 ms. Allocated memory is still 86.0 MB. Free memory was 60.2 MB in the beginning and 58.7 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 581.76 ms. Allocated memory is still 86.0 MB. Free memory was 58.7 MB in the beginning and 37.1 MB in the end (delta: 21.6 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 855.80 ms. Allocated memory was 86.0 MB in the beginning and 115.3 MB in the end (delta: 29.4 MB). Free memory was 36.5 MB in the beginning and 67.2 MB in the end (delta: -30.7 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 4.71 ms. Allocated memory is still 115.3 MB. Free memory was 67.2 MB in the beginning and 66.6 MB in the end (delta: 551.3 kB). Peak memory consumption was 2.1 MB. 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 bitwiseOr at line 74, overapproximation of someBinaryArithmeticDOUBLEoperation at line 51, overapproximation of bitwiseAnd at line 73. Possible FailurePath: [L86] double x = -1.0 / 0.0; [L20] int signbit; [L21] int msw; [L22] unsigned int lsw; [L23] int exponent_less_1023; [L25] ieee_double_shape_type ew_u; [L26] ew_u.value = (x) [L27] EXPR ew_u.parts.msw [L27] (msw) = ew_u.parts.msw [L28] EXPR ew_u.parts.lsw [L28] (lsw) = ew_u.parts.lsw [L30] signbit = msw & 0x80000000 [L31] exponent_less_1023 = ((msw & 0x7ff00000) >> 20) - 1023 [L32] COND FALSE !(exponent_less_1023 < 20) [L49] COND TRUE exponent_less_1023 > 51 [L50] COND TRUE exponent_less_1023 == 1024 [L51] return x + x; [L87] double res = trunc_double(x); [L66] __int32_t hx, lx; [L68] ieee_double_shape_type ew_u; [L69] ew_u.value = (x) [L70] EXPR ew_u.parts.msw [L70] (hx) = ew_u.parts.msw [L71] EXPR ew_u.parts.lsw [L71] (lx) = ew_u.parts.lsw [L73] hx &= 0x7fffffff [L74] hx |= (__uint32_t)(lx | (-lx)) >> 31 [L75] hx = 0x7ff00000 - hx [L76] return 1 - (int)((__uint32_t)(hx | (-hx)) >> 31); [L90] COND TRUE !isinf_double(res) [L3] __assert_fail("0", "double_req_bl_1072d.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 28 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.7s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 30 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=28occurred 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, 0.2s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 28 NumberOfCodeBlocks, 28 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 12 ConstructedInterpolants, 0 QuantifiedInterpolants, 144 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 [2020-11-29 23:37:53,516 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 23:37:53,518 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 23:37:53,553 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 23:37:53,554 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 23:37:53,555 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 23:37:53,557 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 23:37:53,560 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 23:37:53,562 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 23:37:53,563 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 23:37:53,564 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 23:37:53,566 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 23:37:53,566 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 23:37:53,568 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 23:37:53,569 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 23:37:53,571 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 23:37:53,572 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 23:37:53,573 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 23:37:53,575 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 23:37:53,578 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 23:37:53,580 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 23:37:53,582 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 23:37:53,583 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 23:37:53,584 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 23:37:53,588 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 23:37:53,589 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 23:37:53,589 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 23:37:53,590 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 23:37:53,591 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 23:37:53,592 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 23:37:53,593 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 23:37:53,594 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 23:37:53,595 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 23:37:53,596 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 23:37:53,597 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 23:37:53,598 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 23:37:53,599 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 23:37:53,599 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 23:37:53,600 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 23:37:53,601 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 23:37:53,602 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 23:37:53,603 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_86181b26-2b53-4325-b5bf-d18548c89586/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-11-29 23:37:53,631 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 23:37:53,631 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 23:37:53,632 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 23:37:53,633 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 23:37:53,633 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 23:37:53,634 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 23:37:53,634 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 23:37:53,634 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 23:37:53,634 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 23:37:53,634 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 23:37:53,635 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 23:37:53,635 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 23:37:53,635 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-29 23:37:53,635 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-29 23:37:53,635 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 23:37:53,636 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 23:37:53,636 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 23:37:53,636 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 23:37:53,636 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 23:37:53,636 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 23:37:53,636 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 23:37:53,637 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 23:37:53,637 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 23:37:53,637 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 23:37:53,637 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 23:37:53,637 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 23:37:53,638 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-11-29 23:37:53,638 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-29 23:37:53,651 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 23:37:53,655 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 23:37:53,655 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-29 23:37:53,656 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_86181b26-2b53-4325-b5bf-d18548c89586/bin/uautomizer/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_86181b26-2b53-4325-b5bf-d18548c89586/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 965a8d1f86759d0c7cab56eb22958b9f714cfb2b [2020-11-29 23:37:54,080 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 23:37:54,109 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 23:37:54,111 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 23:37:54,113 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 23:37:54,115 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 23:37:54,116 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_86181b26-2b53-4325-b5bf-d18548c89586/bin/uautomizer/../../sv-benchmarks/c/float-newlib/double_req_bl_1072d.c [2020-11-29 23:37:54,199 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_86181b26-2b53-4325-b5bf-d18548c89586/bin/uautomizer/data/e49a564f4/a9fa6aa668ea40a8b42b33aa6501b9a8/FLAG71d57963e [2020-11-29 23:37:54,775 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 23:37:54,775 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_86181b26-2b53-4325-b5bf-d18548c89586/sv-benchmarks/c/float-newlib/double_req_bl_1072d.c [2020-11-29 23:37:54,783 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_86181b26-2b53-4325-b5bf-d18548c89586/bin/uautomizer/data/e49a564f4/a9fa6aa668ea40a8b42b33aa6501b9a8/FLAG71d57963e [2020-11-29 23:37:55,135 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_86181b26-2b53-4325-b5bf-d18548c89586/bin/uautomizer/data/e49a564f4/a9fa6aa668ea40a8b42b33aa6501b9a8 [2020-11-29 23:37:55,138 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 23:37:55,139 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 23:37:55,141 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 23:37:55,141 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 23:37:55,156 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 23:37:55,157 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 11:37:55" (1/1) ... [2020-11-29 23:37:55,158 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70c4829b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:37:55, skipping insertion in model container [2020-11-29 23:37:55,159 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 11:37:55" (1/1) ... [2020-11-29 23:37:55,168 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 23:37:55,190 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 23:37:55,340 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 23:37:55,353 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 23:37:55,385 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 23:37:55,406 INFO L208 MainTranslator]: Completed translation [2020-11-29 23:37:55,406 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:37:55 WrapperNode [2020-11-29 23:37:55,407 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 23:37:55,408 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 23:37:55,408 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 23:37:55,408 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 23:37:55,416 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:37:55" (1/1) ... [2020-11-29 23:37:55,428 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:37:55" (1/1) ... [2020-11-29 23:37:55,513 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 23:37:55,514 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 23:37:55,514 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 23:37:55,514 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 23:37:55,522 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:37:55" (1/1) ... [2020-11-29 23:37:55,522 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:37:55" (1/1) ... [2020-11-29 23:37:55,545 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:37:55" (1/1) ... [2020-11-29 23:37:55,545 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:37:55" (1/1) ... [2020-11-29 23:37:55,555 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:37:55" (1/1) ... [2020-11-29 23:37:55,560 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:37:55" (1/1) ... [2020-11-29 23:37:55,575 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:37:55" (1/1) ... [2020-11-29 23:37:55,579 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 23:37:55,580 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 23:37:55,589 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 23:37:55,589 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 23:37:55,590 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:37:55" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_86181b26-2b53-4325-b5bf-d18548c89586/bin/uautomizer/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 [2020-11-29 23:37:55,663 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2020-11-29 23:37:55,664 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2020-11-29 23:37:55,664 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-29 23:37:55,664 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 23:37:55,665 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-11-29 23:37:55,665 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 23:37:55,665 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 23:37:55,666 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-11-29 23:37:55,666 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-29 23:37:56,431 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 23:37:56,431 INFO L298 CfgBuilder]: Removed 20 assume(true) statements. [2020-11-29 23:37:56,433 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 11:37:56 BoogieIcfgContainer [2020-11-29 23:37:56,433 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 23:37:56,434 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 23:37:56,435 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 23:37:56,440 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 23:37:56,440 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 11:37:55" (1/3) ... [2020-11-29 23:37:56,441 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@470f2e76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 11:37:56, skipping insertion in model container [2020-11-29 23:37:56,442 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:37:55" (2/3) ... [2020-11-29 23:37:56,443 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@470f2e76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 11:37:56, skipping insertion in model container [2020-11-29 23:37:56,444 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 11:37:56" (3/3) ... [2020-11-29 23:37:56,450 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1072d.c [2020-11-29 23:37:56,475 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 23:37:56,480 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-29 23:37:56,492 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-29 23:37:56,533 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 23:37:56,534 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 23:37:56,534 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 23:37:56,534 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 23:37:56,534 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 23:37:56,534 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 23:37:56,535 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 23:37:56,535 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 23:37:56,553 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2020-11-29 23:37:56,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-29 23:37:56,559 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:37:56,559 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:37:56,560 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:37:56,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:37:56,566 INFO L82 PathProgramCache]: Analyzing trace with hash 748040733, now seen corresponding path program 1 times [2020-11-29 23:37:56,577 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 23:37:56,577 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [839271531] [2020-11-29 23:37:56,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_86181b26-2b53-4325-b5bf-d18548c89586/bin/uautomizer/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 [2020-11-29 23:37:56,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:37:56,727 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 1 conjunts are in the unsatisfiable core [2020-11-29 23:37:56,732 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:37:56,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:37:56,747 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 23:37:56,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:37:56,753 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [839271531] [2020-11-29 23:37:56,753 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:37:56,754 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-11-29 23:37:56,755 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902086240] [2020-11-29 23:37:56,759 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-29 23:37:56,759 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 23:37:56,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-29 23:37:56,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 23:37:56,774 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 2 states. [2020-11-29 23:37:56,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:37:56,794 INFO L93 Difference]: Finished difference Result 53 states and 81 transitions. [2020-11-29 23:37:56,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-29 23:37:56,795 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2020-11-29 23:37:56,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:37:56,804 INFO L225 Difference]: With dead ends: 53 [2020-11-29 23:37:56,805 INFO L226 Difference]: Without dead ends: 24 [2020-11-29 23:37:56,820 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 23:37:56,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-11-29 23:37:56,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2020-11-29 23:37:56,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-11-29 23:37:56,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2020-11-29 23:37:56,862 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 13 [2020-11-29 23:37:56,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:37:56,862 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2020-11-29 23:37:56,862 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-29 23:37:56,863 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2020-11-29 23:37:56,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-29 23:37:56,864 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:37:56,864 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:37:57,086 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-29 23:37:57,087 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:37:57,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:37:57,088 INFO L82 PathProgramCache]: Analyzing trace with hash 1214246053, now seen corresponding path program 1 times [2020-11-29 23:37:57,089 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 23:37:57,089 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1622266272] [2020-11-29 23:37:57,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_86181b26-2b53-4325-b5bf-d18548c89586/bin/uautomizer/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 [2020-11-29 23:37:57,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:37:57,417 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:37:57,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 23:37:57,586 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 23:37:57,650 INFO L173 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-11-29 23:37:57,650 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-29 23:37:57,852 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-29 23:37:57,897 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 11:37:57 BoogieIcfgContainer [2020-11-29 23:37:57,898 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 23:37:57,898 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 23:37:57,899 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 23:37:57,899 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 23:37:57,899 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 11:37:56" (3/4) ... [2020-11-29 23:37:57,901 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-29 23:37:57,963 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_86181b26-2b53-4325-b5bf-d18548c89586/bin/uautomizer/witness.graphml [2020-11-29 23:37:57,963 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 23:37:57,965 INFO L168 Benchmark]: Toolchain (without parser) took 2825.20 ms. Allocated memory was 73.4 MB in the beginning and 88.1 MB in the end (delta: 14.7 MB). Free memory was 57.9 MB in the beginning and 54.4 MB in the end (delta: 3.5 MB). Peak memory consumption was 18.0 MB. Max. memory is 16.1 GB. [2020-11-29 23:37:57,966 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 73.4 MB. Free memory was 55.7 MB in the beginning and 55.6 MB in the end (delta: 61.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 23:37:57,967 INFO L168 Benchmark]: CACSL2BoogieTranslator took 266.14 ms. Allocated memory is still 73.4 MB. Free memory was 57.5 MB in the beginning and 46.1 MB in the end (delta: 11.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-29 23:37:57,967 INFO L168 Benchmark]: Boogie Procedure Inliner took 105.28 ms. Allocated memory is still 73.4 MB. Free memory was 46.1 MB in the beginning and 56.6 MB in the end (delta: -10.5 MB). Peak memory consumption was 5.0 MB. Max. memory is 16.1 GB. [2020-11-29 23:37:57,968 INFO L168 Benchmark]: Boogie Preprocessor took 65.67 ms. Allocated memory is still 73.4 MB. Free memory was 56.6 MB in the beginning and 54.8 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 23:37:57,968 INFO L168 Benchmark]: RCFGBuilder took 852.84 ms. Allocated memory is still 73.4 MB. Free memory was 54.6 MB in the beginning and 33.6 MB in the end (delta: 21.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. [2020-11-29 23:37:57,969 INFO L168 Benchmark]: TraceAbstraction took 1463.37 ms. Allocated memory was 73.4 MB in the beginning and 88.1 MB in the end (delta: 14.7 MB). Free memory was 33.1 MB in the beginning and 56.5 MB in the end (delta: -23.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 23:37:57,970 INFO L168 Benchmark]: Witness Printer took 65.05 ms. Allocated memory is still 88.1 MB. Free memory was 56.5 MB in the beginning and 54.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 23:37:57,973 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 73.4 MB. Free memory was 55.7 MB in the beginning and 55.6 MB in the end (delta: 61.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 266.14 ms. Allocated memory is still 73.4 MB. Free memory was 57.5 MB in the beginning and 46.1 MB in the end (delta: 11.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 105.28 ms. Allocated memory is still 73.4 MB. Free memory was 46.1 MB in the beginning and 56.6 MB in the end (delta: -10.5 MB). Peak memory consumption was 5.0 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 65.67 ms. Allocated memory is still 73.4 MB. Free memory was 56.6 MB in the beginning and 54.8 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 852.84 ms. Allocated memory is still 73.4 MB. Free memory was 54.6 MB in the beginning and 33.6 MB in the end (delta: 21.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1463.37 ms. Allocated memory was 73.4 MB in the beginning and 88.1 MB in the end (delta: 14.7 MB). Free memory was 33.1 MB in the beginning and 56.5 MB in the end (delta: -23.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 65.05 ms. Allocated memory is still 88.1 MB. Free memory was 56.5 MB in the beginning and 54.4 MB in the end (delta: 2.1 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: [L86] double x = -1.0 / 0.0; [L20] int signbit; [L21] int msw; [L22] unsigned int lsw; [L23] int exponent_less_1023; [L25] ieee_double_shape_type ew_u; [L26] ew_u.value = (x) [L27] EXPR ew_u.parts.msw [L27] (msw) = ew_u.parts.msw [L28] EXPR ew_u.parts.lsw [L28] (lsw) = ew_u.parts.lsw [L30] signbit = msw & 0x80000000 [L31] exponent_less_1023 = ((msw & 0x7ff00000) >> 20) - 1023 [L32] COND FALSE !(exponent_less_1023 < 20) [L49] COND TRUE exponent_less_1023 > 51 [L50] COND TRUE exponent_less_1023 == 1024 [L51] return x + x; [L87] double res = trunc_double(x); [L66] __int32_t hx, lx; [L68] ieee_double_shape_type ew_u; [L69] ew_u.value = (x) [L70] EXPR ew_u.parts.msw [L70] (hx) = ew_u.parts.msw [L71] EXPR ew_u.parts.lsw [L71] (lx) = ew_u.parts.lsw [L73] hx &= 0x7fffffff [L74] hx |= (__uint32_t)(lx | (-lx)) >> 31 [L75] hx = 0x7ff00000 - hx [L76] return 1 - (int)((__uint32_t)(hx | (-hx)) >> 31); [L90] COND TRUE !isinf_double(res) [L3] __assert_fail("0", "double_req_bl_1072d.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 28 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.3s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 30 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=28occurred 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, 0.3s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 28 NumberOfCodeBlocks, 28 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 24 ConstructedInterpolants, 0 QuantifiedInterpolants, 288 SizeOfPredicates, 0 NumberOfNonLiveVariables, 41 ConjunctsInSsa, 1 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...