./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/double_req_bl_1130a.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_b5085ce3-eb32-4784-b19a-29ff50fc28e2/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_b5085ce3-eb32-4784-b19a-29ff50fc28e2/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_b5085ce3-eb32-4784-b19a-29ff50fc28e2/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_b5085ce3-eb32-4784-b19a-29ff50fc28e2/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1130a.c -s /tmp/vcloud-vcloud-master/worker/run_dir_b5085ce3-eb32-4784-b19a-29ff50fc28e2/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_b5085ce3-eb32-4784-b19a-29ff50fc28e2/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 0234da8cdb9a2c3c5c10a76d147ba9cd027ddd81 ............................................................................................................................................................................................................................................................................................................... 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_b5085ce3-eb32-4784-b19a-29ff50fc28e2/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_b5085ce3-eb32-4784-b19a-29ff50fc28e2/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_b5085ce3-eb32-4784-b19a-29ff50fc28e2/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_b5085ce3-eb32-4784-b19a-29ff50fc28e2/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1130a.c -s /tmp/vcloud-vcloud-master/worker/run_dir_b5085ce3-eb32-4784-b19a-29ff50fc28e2/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_b5085ce3-eb32-4784-b19a-29ff50fc28e2/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 0234da8cdb9a2c3c5c10a76d147ba9cd027ddd81 ........................................................................................................................................................................................................................................................................................................................... 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 [2020-11-28 03:00:40,967 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 03:00:40,969 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 03:00:41,025 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 03:00:41,026 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 03:00:41,028 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 03:00:41,031 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 03:00:41,035 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 03:00:41,038 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 03:00:41,040 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 03:00:41,042 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 03:00:41,044 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 03:00:41,045 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 03:00:41,055 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 03:00:41,058 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 03:00:41,069 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 03:00:41,071 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 03:00:41,072 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 03:00:41,076 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 03:00:41,079 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 03:00:41,082 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 03:00:41,084 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 03:00:41,086 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 03:00:41,088 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 03:00:41,093 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 03:00:41,093 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 03:00:41,094 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 03:00:41,096 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 03:00:41,097 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 03:00:41,098 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 03:00:41,099 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 03:00:41,100 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 03:00:41,102 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 03:00:41,103 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 03:00:41,105 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 03:00:41,105 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 03:00:41,107 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 03:00:41,107 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 03:00:41,108 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 03:00:41,109 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 03:00:41,110 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 03:00:41,112 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_b5085ce3-eb32-4784-b19a-29ff50fc28e2/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-28 03:00:41,143 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 03:00:41,144 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 03:00:41,146 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 03:00:41,146 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 03:00:41,146 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 03:00:41,147 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 03:00:41,147 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 03:00:41,147 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 03:00:41,147 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 03:00:41,148 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 03:00:41,148 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 03:00:41,148 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 03:00:41,149 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 03:00:41,149 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 03:00:41,149 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 03:00:41,149 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 03:00:41,150 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 03:00:41,150 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 03:00:41,150 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 03:00:41,151 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 03:00:41,151 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 03:00:41,151 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 03:00:41,151 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 03:00:41,152 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 03:00:41,152 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 03:00:41,152 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 03:00:41,153 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 03:00:41,153 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 03:00:41,153 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 03:00:41,153 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_b5085ce3-eb32-4784-b19a-29ff50fc28e2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_b5085ce3-eb32-4784-b19a-29ff50fc28e2/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0234da8cdb9a2c3c5c10a76d147ba9cd027ddd81 [2020-11-28 03:00:41,475 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 03:00:41,519 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 03:00:41,523 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 03:00:41,524 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 03:00:41,528 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 03:00:41,530 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_b5085ce3-eb32-4784-b19a-29ff50fc28e2/bin/uautomizer/../../sv-benchmarks/c/float-newlib/double_req_bl_1130a.c [2020-11-28 03:00:41,645 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_b5085ce3-eb32-4784-b19a-29ff50fc28e2/bin/uautomizer/data/3f8bb72dc/3e23c60bc02147d0a27cf600313c3d23/FLAG66e931c7e [2020-11-28 03:00:42,284 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 03:00:42,285 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_b5085ce3-eb32-4784-b19a-29ff50fc28e2/sv-benchmarks/c/float-newlib/double_req_bl_1130a.c [2020-11-28 03:00:42,304 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_b5085ce3-eb32-4784-b19a-29ff50fc28e2/bin/uautomizer/data/3f8bb72dc/3e23c60bc02147d0a27cf600313c3d23/FLAG66e931c7e [2020-11-28 03:00:42,625 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_b5085ce3-eb32-4784-b19a-29ff50fc28e2/bin/uautomizer/data/3f8bb72dc/3e23c60bc02147d0a27cf600313c3d23 [2020-11-28 03:00:42,627 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 03:00:42,629 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 03:00:42,644 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 03:00:42,645 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 03:00:42,647 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 03:00:42,648 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:00:42" (1/1) ... [2020-11-28 03:00:42,650 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6bbcdaa2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:00:42, skipping insertion in model container [2020-11-28 03:00:42,650 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:00:42" (1/1) ... [2020-11-28 03:00:42,658 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 03:00:42,686 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 03:00:42,925 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:00:42,932 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 03:00:42,982 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:00:42,997 INFO L208 MainTranslator]: Completed translation [2020-11-28 03:00:42,997 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:00:42 WrapperNode [2020-11-28 03:00:42,997 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 03:00:42,999 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 03:00:42,999 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 03:00:42,999 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 03:00:43,007 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:00:42" (1/1) ... [2020-11-28 03:00:43,024 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:00:42" (1/1) ... [2020-11-28 03:00:43,096 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 03:00:43,096 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 03:00:43,097 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 03:00:43,097 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 03:00:43,107 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:00:42" (1/1) ... [2020-11-28 03:00:43,107 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:00:42" (1/1) ... [2020-11-28 03:00:43,115 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:00:42" (1/1) ... [2020-11-28 03:00:43,115 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:00:42" (1/1) ... [2020-11-28 03:00:43,130 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:00:42" (1/1) ... [2020-11-28 03:00:43,138 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:00:42" (1/1) ... [2020-11-28 03:00:43,142 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:00:42" (1/1) ... [2020-11-28 03:00:43,163 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 03:00:43,164 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 03:00:43,164 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 03:00:43,164 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 03:00:43,166 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:00:42" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b5085ce3-eb32-4784-b19a-29ff50fc28e2/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 [2020-11-28 03:00:43,302 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 03:00:43,302 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 03:00:43,303 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-28 03:00:43,304 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-11-28 03:00:43,304 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-11-28 03:00:43,304 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 03:00:43,304 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 03:00:43,305 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-28 03:00:43,305 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-11-28 03:00:43,307 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-28 03:00:44,099 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 03:00:44,100 INFO L298 CfgBuilder]: Removed 26 assume(true) statements. [2020-11-28 03:00:44,102 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:00:44 BoogieIcfgContainer [2020-11-28 03:00:44,102 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 03:00:44,104 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 03:00:44,104 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 03:00:44,107 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 03:00:44,108 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:00:42" (1/3) ... [2020-11-28 03:00:44,109 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b1f9f72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:00:44, skipping insertion in model container [2020-11-28 03:00:44,109 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:00:42" (2/3) ... [2020-11-28 03:00:44,109 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b1f9f72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:00:44, skipping insertion in model container [2020-11-28 03:00:44,109 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:00:44" (3/3) ... [2020-11-28 03:00:44,112 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1130a.c [2020-11-28 03:00:44,121 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 03:00:44,125 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-28 03:00:44,138 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-28 03:00:44,164 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 03:00:44,165 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 03:00:44,165 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 03:00:44,165 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 03:00:44,165 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 03:00:44,165 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 03:00:44,165 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 03:00:44,166 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 03:00:44,182 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states. [2020-11-28 03:00:44,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-28 03:00:44,187 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:00:44,188 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:00:44,189 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:00:44,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:00:44,195 INFO L82 PathProgramCache]: Analyzing trace with hash 464220005, now seen corresponding path program 1 times [2020-11-28 03:00:44,202 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:00:44,203 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558888367] [2020-11-28 03:00:44,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:00:44,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:00:44,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:00:44,369 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558888367] [2020-11-28 03:00:44,370 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:00:44,370 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 03:00:44,371 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918083307] [2020-11-28 03:00:44,376 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-28 03:00:44,376 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:00:44,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-28 03:00:44,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 03:00:44,395 INFO L87 Difference]: Start difference. First operand 62 states. Second operand 2 states. [2020-11-28 03:00:44,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:00:44,431 INFO L93 Difference]: Finished difference Result 120 states and 209 transitions. [2020-11-28 03:00:44,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-28 03:00:44,433 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2020-11-28 03:00:44,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:00:44,454 INFO L225 Difference]: With dead ends: 120 [2020-11-28 03:00:44,454 INFO L226 Difference]: Without dead ends: 57 [2020-11-28 03:00:44,464 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 [2020-11-28 03:00:44,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-11-28 03:00:44,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2020-11-28 03:00:44,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-11-28 03:00:44,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 84 transitions. [2020-11-28 03:00:44,505 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 84 transitions. Word has length 11 [2020-11-28 03:00:44,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:00:44,505 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 84 transitions. [2020-11-28 03:00:44,505 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-28 03:00:44,505 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 84 transitions. [2020-11-28 03:00:44,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-28 03:00:44,506 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:00:44,507 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:00:44,507 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 03:00:44,507 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:00:44,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:00:44,508 INFO L82 PathProgramCache]: Analyzing trace with hash 1051323842, now seen corresponding path program 1 times [2020-11-28 03:00:44,509 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:00:44,509 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135149156] [2020-11-28 03:00:44,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:00:44,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:00:44,580 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:00:44,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:00:44,663 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:00:44,697 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:00:44,698 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-28 03:00:44,699 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 03:00:44,739 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 03:00:44 BoogieIcfgContainer [2020-11-28 03:00:44,739 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 03:00:44,740 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 03:00:44,740 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 03:00:44,740 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 03:00:44,741 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:00:44" (3/4) ... [2020-11-28 03:00:44,745 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-28 03:00:44,745 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 03:00:44,747 INFO L168 Benchmark]: Toolchain (without parser) took 2117.40 ms. Allocated memory is still 94.4 MB. Free memory was 64.7 MB in the beginning and 55.4 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:00:44,748 INFO L168 Benchmark]: CDTParser took 0.67 ms. Allocated memory is still 75.5 MB. Free memory was 38.3 MB in the beginning and 38.2 MB in the end (delta: 75.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:00:44,749 INFO L168 Benchmark]: CACSL2BoogieTranslator took 353.31 ms. Allocated memory is still 94.4 MB. Free memory was 64.5 MB in the beginning and 68.3 MB in the end (delta: -3.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 03:00:44,750 INFO L168 Benchmark]: Boogie Procedure Inliner took 97.14 ms. Allocated memory is still 94.4 MB. Free memory was 68.3 MB in the beginning and 65.9 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:00:44,751 INFO L168 Benchmark]: Boogie Preprocessor took 66.72 ms. Allocated memory is still 94.4 MB. Free memory was 65.9 MB in the beginning and 63.5 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:00:44,752 INFO L168 Benchmark]: RCFGBuilder took 938.00 ms. Allocated memory is still 94.4 MB. Free memory was 63.5 MB in the beginning and 54.7 MB in the end (delta: 8.8 MB). Peak memory consumption was 21.4 MB. Max. memory is 16.1 GB. [2020-11-28 03:00:44,753 INFO L168 Benchmark]: TraceAbstraction took 635.64 ms. Allocated memory is still 94.4 MB. Free memory was 54.3 MB in the beginning and 55.9 MB in the end (delta: -1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:00:44,754 INFO L168 Benchmark]: Witness Printer took 5.24 ms. Allocated memory is still 94.4 MB. Free memory was 55.9 MB in the beginning and 55.4 MB in the end (delta: 514.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:00:44,758 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.67 ms. Allocated memory is still 75.5 MB. Free memory was 38.3 MB in the beginning and 38.2 MB in the end (delta: 75.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 353.31 ms. Allocated memory is still 94.4 MB. Free memory was 64.5 MB in the beginning and 68.3 MB in the end (delta: -3.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 97.14 ms. Allocated memory is still 94.4 MB. Free memory was 68.3 MB in the beginning and 65.9 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 66.72 ms. Allocated memory is still 94.4 MB. Free memory was 65.9 MB in the beginning and 63.5 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 938.00 ms. Allocated memory is still 94.4 MB. Free memory was 63.5 MB in the beginning and 54.7 MB in the end (delta: 8.8 MB). Peak memory consumption was 21.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 635.64 ms. Allocated memory is still 94.4 MB. Free memory was 54.3 MB in the beginning and 55.9 MB in the end (delta: -1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 5.24 ms. Allocated memory is still 94.4 MB. Free memory was 55.9 MB in the beginning and 55.4 MB in the end (delta: 514.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 46, overapproximation of someUnaryDOUBLEoperation at line 22, overapproximation of bitwiseAnd at line 41, overapproximation of someBinaryArithmeticDOUBLEoperation at line 47, overapproximation of someBinaryDOUBLEComparisonOperation at line 192, overapproximation of bitwiseXor at line 42. Possible FailurePath: [L20-L23] static const double one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; VAL [one_fmod=1, Zero_fmod={9:0}] [L184] double x = 0.0; [L185] double y = __VERIFIER_nondet_double(); [L187] COND TRUE y < 0.0 || y > 0.0 [L26] __int32_t n, hx, hy, hz, ix, iy, sx, i; [L27] __uint32_t lx, ly, lz; VAL [one_fmod=1, Zero_fmod={9:0}] [L30] ieee_double_shape_type ew_u; [L31] ew_u.value = (x) [L32] EXPR ew_u.parts.msw [L32] (hx) = ew_u.parts.msw [L33] EXPR ew_u.parts.lsw [L33] (lx) = ew_u.parts.lsw [L36] ieee_double_shape_type ew_u; [L37] ew_u.value = (y) [L38] EXPR ew_u.parts.msw [L38] (hy) = ew_u.parts.msw [L39] EXPR ew_u.parts.lsw [L39] (ly) = ew_u.parts.lsw [L41] sx = hx & 0x80000000 [L42] hx ^= sx [L43] hy &= 0x7fffffff VAL [one_fmod=1, Zero_fmod={9:0}] [L45-L46] COND TRUE (hy | ly) == 0 || (hx >= 0x7ff00000) || ((hy | ((ly | -ly) >> 31)) > 0x7ff00000) [L47] return (x * y) / (x * y); VAL [one_fmod=1, Zero_fmod={9:0}] [L189] double res = fmod_double(x, y); [L192] EXPR res == 0.0 && __signbit_double(res) == 0 VAL [one_fmod=1, Zero_fmod={9:0}] [L192] COND TRUE !(res == 0.0 && __signbit_double(res) == 0) [L3] __assert_fail("0", "double_req_bl_1130a.c", 3, "reach_error") VAL [one_fmod=1, Zero_fmod={9:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 62 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.5s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 89 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=62occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 24 NumberOfCodeBlocks, 24 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 100 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 [2020-11-28 03:00:47,636 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 03:00:47,638 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 03:00:47,700 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 03:00:47,700 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 03:00:47,707 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 03:00:47,710 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 03:00:47,715 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 03:00:47,719 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 03:00:47,726 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 03:00:47,728 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 03:00:47,742 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 03:00:47,743 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 03:00:47,744 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 03:00:47,745 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 03:00:47,747 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 03:00:47,748 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 03:00:47,749 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 03:00:47,751 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 03:00:47,754 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 03:00:47,765 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 03:00:47,767 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 03:00:47,769 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 03:00:47,772 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 03:00:47,783 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 03:00:47,787 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 03:00:47,788 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 03:00:47,789 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 03:00:47,791 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 03:00:47,793 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 03:00:47,793 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 03:00:47,795 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 03:00:47,797 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 03:00:47,798 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 03:00:47,799 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 03:00:47,800 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 03:00:47,801 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 03:00:47,801 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 03:00:47,802 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 03:00:47,804 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 03:00:47,805 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 03:00:47,806 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_b5085ce3-eb32-4784-b19a-29ff50fc28e2/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-11-28 03:00:47,860 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 03:00:47,860 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 03:00:47,863 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 03:00:47,863 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 03:00:47,864 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 03:00:47,864 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 03:00:47,864 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 03:00:47,865 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 03:00:47,865 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 03:00:47,865 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 03:00:47,866 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 03:00:47,867 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 03:00:47,867 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-28 03:00:47,867 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-28 03:00:47,868 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 03:00:47,868 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 03:00:47,868 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 03:00:47,868 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 03:00:47,869 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 03:00:47,869 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 03:00:47,869 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 03:00:47,870 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 03:00:47,870 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 03:00:47,870 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 03:00:47,871 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 03:00:47,871 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 03:00:47,871 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-11-28 03:00:47,871 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-28 03:00:47,872 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 03:00:47,872 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 03:00:47,872 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-28 03:00:47,872 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_b5085ce3-eb32-4784-b19a-29ff50fc28e2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_b5085ce3-eb32-4784-b19a-29ff50fc28e2/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0234da8cdb9a2c3c5c10a76d147ba9cd027ddd81 [2020-11-28 03:00:48,343 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 03:00:48,393 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 03:00:48,396 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 03:00:48,398 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 03:00:48,401 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 03:00:48,402 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_b5085ce3-eb32-4784-b19a-29ff50fc28e2/bin/uautomizer/../../sv-benchmarks/c/float-newlib/double_req_bl_1130a.c [2020-11-28 03:00:48,493 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_b5085ce3-eb32-4784-b19a-29ff50fc28e2/bin/uautomizer/data/65ae3c3e1/d12ab161513d4148a26acf30b78d3451/FLAG20122f4b3 [2020-11-28 03:00:49,191 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 03:00:49,191 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_b5085ce3-eb32-4784-b19a-29ff50fc28e2/sv-benchmarks/c/float-newlib/double_req_bl_1130a.c [2020-11-28 03:00:49,200 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_b5085ce3-eb32-4784-b19a-29ff50fc28e2/bin/uautomizer/data/65ae3c3e1/d12ab161513d4148a26acf30b78d3451/FLAG20122f4b3 [2020-11-28 03:00:49,534 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_b5085ce3-eb32-4784-b19a-29ff50fc28e2/bin/uautomizer/data/65ae3c3e1/d12ab161513d4148a26acf30b78d3451 [2020-11-28 03:00:49,537 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 03:00:49,539 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 03:00:49,541 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 03:00:49,543 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 03:00:49,547 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 03:00:49,549 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:00:49" (1/1) ... [2020-11-28 03:00:49,551 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14b3721d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:00:49, skipping insertion in model container [2020-11-28 03:00:49,552 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:00:49" (1/1) ... [2020-11-28 03:00:49,562 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 03:00:49,630 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 03:00:49,847 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:00:49,859 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 03:00:49,974 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:00:50,008 INFO L208 MainTranslator]: Completed translation [2020-11-28 03:00:50,010 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:00:50 WrapperNode [2020-11-28 03:00:50,010 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 03:00:50,012 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 03:00:50,012 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 03:00:50,014 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 03:00:50,023 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:00:50" (1/1) ... [2020-11-28 03:00:50,053 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:00:50" (1/1) ... [2020-11-28 03:00:50,104 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 03:00:50,107 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 03:00:50,108 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 03:00:50,108 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 03:00:50,117 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:00:50" (1/1) ... [2020-11-28 03:00:50,117 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:00:50" (1/1) ... [2020-11-28 03:00:50,135 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:00:50" (1/1) ... [2020-11-28 03:00:50,148 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:00:50" (1/1) ... [2020-11-28 03:00:50,163 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:00:50" (1/1) ... [2020-11-28 03:00:50,181 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:00:50" (1/1) ... [2020-11-28 03:00:50,188 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:00:50" (1/1) ... [2020-11-28 03:00:50,203 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 03:00:50,204 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 03:00:50,204 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 03:00:50,205 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 03:00:50,206 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:00:50" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b5085ce3-eb32-4784-b19a-29ff50fc28e2/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 [2020-11-28 03:00:50,279 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2020-11-28 03:00:50,280 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2020-11-28 03:00:50,280 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-28 03:00:50,280 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 03:00:50,281 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8 [2020-11-28 03:00:50,281 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-11-28 03:00:50,281 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 03:00:50,282 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 03:00:50,282 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-11-28 03:00:50,283 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-28 03:00:54,569 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 03:00:54,570 INFO L298 CfgBuilder]: Removed 26 assume(true) statements. [2020-11-28 03:00:54,585 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:00:54 BoogieIcfgContainer [2020-11-28 03:00:54,585 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 03:00:54,588 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 03:00:54,603 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 03:00:54,607 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 03:00:54,607 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:00:49" (1/3) ... [2020-11-28 03:00:54,608 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70a60c73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:00:54, skipping insertion in model container [2020-11-28 03:00:54,609 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:00:50" (2/3) ... [2020-11-28 03:00:54,609 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70a60c73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:00:54, skipping insertion in model container [2020-11-28 03:00:54,609 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:00:54" (3/3) ... [2020-11-28 03:00:54,611 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1130a.c [2020-11-28 03:00:54,623 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 03:00:54,637 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-28 03:00:54,661 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-28 03:00:54,714 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 03:00:54,714 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 03:00:54,714 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 03:00:54,714 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 03:00:54,715 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 03:00:54,715 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 03:00:54,715 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 03:00:54,715 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 03:00:54,729 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states. [2020-11-28 03:00:54,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-28 03:00:54,735 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:00:54,736 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:00:54,737 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:00:54,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:00:54,743 INFO L82 PathProgramCache]: Analyzing trace with hash 464220005, now seen corresponding path program 1 times [2020-11-28 03:00:54,756 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-28 03:00:54,756 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1849875553] [2020-11-28 03:00:54,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b5085ce3-eb32-4784-b19a-29ff50fc28e2/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 [2020-11-28 03:00:55,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:00:56,037 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 1 conjunts are in the unsatisfiable core [2020-11-28 03:00:56,046 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:00:56,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:00:56,075 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 03:00:56,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:00:56,079 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1849875553] [2020-11-28 03:00:56,080 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:00:56,081 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-11-28 03:00:56,081 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400656181] [2020-11-28 03:00:56,085 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-28 03:00:56,086 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-28 03:00:56,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-28 03:00:56,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 03:00:56,099 INFO L87 Difference]: Start difference. First operand 62 states. Second operand 2 states. [2020-11-28 03:00:56,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:00:56,120 INFO L93 Difference]: Finished difference Result 120 states and 209 transitions. [2020-11-28 03:00:56,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-28 03:00:56,121 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2020-11-28 03:00:56,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:00:56,130 INFO L225 Difference]: With dead ends: 120 [2020-11-28 03:00:56,130 INFO L226 Difference]: Without dead ends: 57 [2020-11-28 03:00:56,133 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 03:00:56,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-11-28 03:00:56,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2020-11-28 03:00:56,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-11-28 03:00:56,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 84 transitions. [2020-11-28 03:00:56,171 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 84 transitions. Word has length 11 [2020-11-28 03:00:56,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:00:56,172 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 84 transitions. [2020-11-28 03:00:56,172 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-28 03:00:56,172 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 84 transitions. [2020-11-28 03:00:56,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-28 03:00:56,173 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:00:56,173 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:00:56,396 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-28 03:00:56,396 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:00:56,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:00:56,397 INFO L82 PathProgramCache]: Analyzing trace with hash 1051323842, now seen corresponding path program 1 times [2020-11-28 03:00:56,398 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-28 03:00:56,398 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1612647157] [2020-11-28 03:00:56,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b5085ce3-eb32-4784-b19a-29ff50fc28e2/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 [2020-11-28 03:00:58,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:00:58,180 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:00:59,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:00:59,796 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:00:59,965 INFO L173 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-11-28 03:00:59,966 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-28 03:01:00,167 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-28 03:01:00,213 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 03:01:00 BoogieIcfgContainer [2020-11-28 03:01:00,213 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 03:01:00,214 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 03:01:00,214 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 03:01:00,215 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 03:01:00,215 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:00:54" (3/4) ... [2020-11-28 03:01:00,218 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-28 03:01:00,294 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_b5085ce3-eb32-4784-b19a-29ff50fc28e2/bin/uautomizer/witness.graphml [2020-11-28 03:01:00,295 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 03:01:00,297 INFO L168 Benchmark]: Toolchain (without parser) took 10757.29 ms. Allocated memory was 48.2 MB in the beginning and 69.2 MB in the end (delta: 21.0 MB). Free memory was 23.0 MB in the beginning and 42.1 MB in the end (delta: -19.1 MB). Peak memory consumption was 1.7 MB. Max. memory is 16.1 GB. [2020-11-28 03:01:00,298 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 48.2 MB. Free memory was 29.7 MB in the beginning and 29.7 MB in the end (delta: 31.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:01:00,299 INFO L168 Benchmark]: CACSL2BoogieTranslator took 470.02 ms. Allocated memory was 48.2 MB in the beginning and 69.2 MB in the end (delta: 21.0 MB). Free memory was 22.9 MB in the beginning and 49.0 MB in the end (delta: -26.1 MB). Peak memory consumption was 3.5 MB. Max. memory is 16.1 GB. [2020-11-28 03:01:00,300 INFO L168 Benchmark]: Boogie Procedure Inliner took 94.13 ms. Allocated memory is still 69.2 MB. Free memory was 49.0 MB in the beginning and 46.4 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:01:00,301 INFO L168 Benchmark]: Boogie Preprocessor took 96.75 ms. Allocated memory is still 69.2 MB. Free memory was 46.4 MB in the beginning and 44.1 MB in the end (delta: 2.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-28 03:01:00,302 INFO L168 Benchmark]: RCFGBuilder took 4381.46 ms. Allocated memory is still 69.2 MB. Free memory was 44.1 MB in the beginning and 44.9 MB in the end (delta: -850.3 kB). Peak memory consumption was 19.2 MB. Max. memory is 16.1 GB. [2020-11-28 03:01:00,303 INFO L168 Benchmark]: TraceAbstraction took 5625.86 ms. Allocated memory is still 69.2 MB. Free memory was 44.2 MB in the beginning and 44.6 MB in the end (delta: -405.5 kB). Peak memory consumption was 19.8 MB. Max. memory is 16.1 GB. [2020-11-28 03:01:00,304 INFO L168 Benchmark]: Witness Printer took 80.92 ms. Allocated memory is still 69.2 MB. Free memory was 44.2 MB in the beginning and 42.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:01:00,309 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 48.2 MB. Free memory was 29.7 MB in the beginning and 29.7 MB in the end (delta: 31.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 470.02 ms. Allocated memory was 48.2 MB in the beginning and 69.2 MB in the end (delta: 21.0 MB). Free memory was 22.9 MB in the beginning and 49.0 MB in the end (delta: -26.1 MB). Peak memory consumption was 3.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 94.13 ms. Allocated memory is still 69.2 MB. Free memory was 49.0 MB in the beginning and 46.4 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 96.75 ms. Allocated memory is still 69.2 MB. Free memory was 46.4 MB in the beginning and 44.1 MB in the end (delta: 2.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 4381.46 ms. Allocated memory is still 69.2 MB. Free memory was 44.1 MB in the beginning and 44.9 MB in the end (delta: -850.3 kB). Peak memory consumption was 19.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5625.86 ms. Allocated memory is still 69.2 MB. Free memory was 44.2 MB in the beginning and 44.6 MB in the end (delta: -405.5 kB). Peak memory consumption was 19.8 MB. Max. memory is 16.1 GB. * Witness Printer took 80.92 ms. Allocated memory is still 69.2 MB. Free memory was 44.2 MB in the beginning and 42.1 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: [L20-L23] static const double one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; VAL [one_fmod=1.0, Zero_fmod={2:0}] [L184] double x = 0.0; [L185] double y = __VERIFIER_nondet_double(); [L187] COND TRUE y < 0.0 || y > 0.0 [L26] __int32_t n, hx, hy, hz, ix, iy, sx, i; [L27] __uint32_t lx, ly, lz; VAL [one_fmod=1.0, Zero_fmod={2:0}] [L30] ieee_double_shape_type ew_u; [L31] ew_u.value = (x) [L32] EXPR ew_u.parts.msw [L32] (hx) = ew_u.parts.msw [L33] EXPR ew_u.parts.lsw [L33] (lx) = ew_u.parts.lsw [L36] ieee_double_shape_type ew_u; [L37] ew_u.value = (y) [L38] EXPR ew_u.parts.msw [L38] (hy) = ew_u.parts.msw [L39] EXPR ew_u.parts.lsw [L39] (ly) = ew_u.parts.lsw [L41] sx = hx & 0x80000000 [L42] hx ^= sx [L43] hy &= 0x7fffffff VAL [one_fmod=1.0, Zero_fmod={2:0}] [L45-L46] COND TRUE (hy | ly) == 0 || (hx >= 0x7ff00000) || ((hy | ((ly | -ly) >> 31)) > 0x7ff00000) [L47] return (x * y) / (x * y); VAL [one_fmod=1.0, Zero_fmod={2:0}] [L189] double res = fmod_double(x, y); [L192] EXPR res == 0.0 && __signbit_double(res) == 0 VAL [one_fmod=1.0, Zero_fmod={2:0}] [L192] COND TRUE !(res == 0.0 && __signbit_double(res) == 0) [L3] __assert_fail("0", "double_req_bl_1130a.c", 3, "reach_error") VAL [one_fmod=1.0, Zero_fmod={2:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 62 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 5.4s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 89 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 20 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=62occurred 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, 2.7s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 24 NumberOfCodeBlocks, 24 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 20 ConstructedInterpolants, 0 QuantifiedInterpolants, 200 SizeOfPredicates, 0 NumberOfNonLiveVariables, 52 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...