./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_1210.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_20b6e602-2dfd-41a2-97e7-35f13e48d344/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_20b6e602-2dfd-41a2-97e7-35f13e48d344/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_20b6e602-2dfd-41a2-97e7-35f13e48d344/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_20b6e602-2dfd-41a2-97e7-35f13e48d344/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1210.c -s /tmp/vcloud-vcloud-master/worker/run_dir_20b6e602-2dfd-41a2-97e7-35f13e48d344/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_20b6e602-2dfd-41a2-97e7-35f13e48d344/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 6a2ce6cad1ff26c462bd542dafb3ac3798055daa .................................................................................................................................................................................................................................................................................................................................................. 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_20b6e602-2dfd-41a2-97e7-35f13e48d344/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_20b6e602-2dfd-41a2-97e7-35f13e48d344/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_20b6e602-2dfd-41a2-97e7-35f13e48d344/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_20b6e602-2dfd-41a2-97e7-35f13e48d344/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1210.c -s /tmp/vcloud-vcloud-master/worker/run_dir_20b6e602-2dfd-41a2-97e7-35f13e48d344/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_20b6e602-2dfd-41a2-97e7-35f13e48d344/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 6a2ce6cad1ff26c462bd542dafb3ac3798055daa ...................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-30 00:42:22,296 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 00:42:22,299 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 00:42:22,367 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 00:42:22,368 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 00:42:22,370 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 00:42:22,373 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 00:42:22,377 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 00:42:22,380 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 00:42:22,382 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 00:42:22,384 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 00:42:22,386 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 00:42:22,388 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 00:42:22,393 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 00:42:22,395 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 00:42:22,398 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 00:42:22,402 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 00:42:22,411 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 00:42:22,415 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 00:42:22,421 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 00:42:22,430 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 00:42:22,432 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 00:42:22,434 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 00:42:22,436 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 00:42:22,440 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 00:42:22,441 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 00:42:22,441 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 00:42:22,443 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 00:42:22,444 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 00:42:22,445 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 00:42:22,446 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 00:42:22,448 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 00:42:22,449 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 00:42:22,450 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 00:42:22,452 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 00:42:22,453 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 00:42:22,454 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 00:42:22,455 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 00:42:22,455 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 00:42:22,457 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 00:42:22,458 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 00:42:22,459 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_20b6e602-2dfd-41a2-97e7-35f13e48d344/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-30 00:42:22,511 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 00:42:22,511 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 00:42:22,513 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-30 00:42:22,513 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-30 00:42:22,514 INFO L138 SettingsManager]: * Use SBE=true [2020-11-30 00:42:22,514 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 00:42:22,514 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 00:42:22,514 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 00:42:22,515 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 00:42:22,515 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 00:42:22,515 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 00:42:22,515 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 00:42:22,516 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 00:42:22,516 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 00:42:22,516 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 00:42:22,516 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 00:42:22,517 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 00:42:22,517 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 00:42:22,517 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-30 00:42:22,517 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 00:42:22,518 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 00:42:22,518 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 00:42:22,518 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 00:42:22,518 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 00:42:22,519 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 00:42:22,519 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-30 00:42:22,519 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-30 00:42:22,519 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 00:42:22,519 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 00:42:22,520 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_20b6e602-2dfd-41a2-97e7-35f13e48d344/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_20b6e602-2dfd-41a2-97e7-35f13e48d344/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6a2ce6cad1ff26c462bd542dafb3ac3798055daa [2020-11-30 00:42:22,857 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 00:42:22,915 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 00:42:22,922 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 00:42:22,923 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 00:42:22,926 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 00:42:22,928 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_20b6e602-2dfd-41a2-97e7-35f13e48d344/bin/uautomizer/../../sv-benchmarks/c/float-newlib/float_req_bl_1210.c [2020-11-30 00:42:23,073 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_20b6e602-2dfd-41a2-97e7-35f13e48d344/bin/uautomizer/data/60f6d73f0/a7abe74e1d0044749e99cd856b0e1582/FLAG713d6e6a6 [2020-11-30 00:42:23,732 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 00:42:23,733 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_20b6e602-2dfd-41a2-97e7-35f13e48d344/sv-benchmarks/c/float-newlib/float_req_bl_1210.c [2020-11-30 00:42:23,742 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_20b6e602-2dfd-41a2-97e7-35f13e48d344/bin/uautomizer/data/60f6d73f0/a7abe74e1d0044749e99cd856b0e1582/FLAG713d6e6a6 [2020-11-30 00:42:24,078 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_20b6e602-2dfd-41a2-97e7-35f13e48d344/bin/uautomizer/data/60f6d73f0/a7abe74e1d0044749e99cd856b0e1582 [2020-11-30 00:42:24,082 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 00:42:24,084 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 00:42:24,093 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 00:42:24,094 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 00:42:24,098 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 00:42:24,099 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:42:24" (1/1) ... [2020-11-30 00:42:24,105 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72f72332 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:42:24, skipping insertion in model container [2020-11-30 00:42:24,106 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:42:24" (1/1) ... [2020-11-30 00:42:24,116 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 00:42:24,143 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 00:42:24,328 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:42:24,341 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 00:42:24,409 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:42:24,438 INFO L208 MainTranslator]: Completed translation [2020-11-30 00:42:24,439 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:42:24 WrapperNode [2020-11-30 00:42:24,439 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 00:42:24,441 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 00:42:24,441 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 00:42:24,441 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 00:42:24,450 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:42:24" (1/1) ... [2020-11-30 00:42:24,494 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:42:24" (1/1) ... [2020-11-30 00:42:24,527 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 00:42:24,528 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 00:42:24,529 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 00:42:24,529 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 00:42:24,542 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:42:24" (1/1) ... [2020-11-30 00:42:24,543 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:42:24" (1/1) ... [2020-11-30 00:42:24,547 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:42:24" (1/1) ... [2020-11-30 00:42:24,548 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:42:24" (1/1) ... [2020-11-30 00:42:24,559 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:42:24" (1/1) ... [2020-11-30 00:42:24,566 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:42:24" (1/1) ... [2020-11-30 00:42:24,569 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:42:24" (1/1) ... [2020-11-30 00:42:24,575 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 00:42:24,576 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 00:42:24,576 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 00:42:24,576 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 00:42:24,578 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:42:24" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_20b6e602-2dfd-41a2-97e7-35f13e48d344/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 [2020-11-30 00:42:24,674 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-30 00:42:24,674 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 00:42:24,675 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-11-30 00:42:24,675 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-30 00:42:24,675 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-11-30 00:42:24,675 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 00:42:24,676 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 00:42:24,676 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-30 00:42:24,676 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-30 00:42:25,380 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 00:42:25,381 INFO L298 CfgBuilder]: Removed 26 assume(true) statements. [2020-11-30 00:42:25,383 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:42:25 BoogieIcfgContainer [2020-11-30 00:42:25,383 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 00:42:25,385 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 00:42:25,385 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 00:42:25,389 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 00:42:25,389 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 12:42:24" (1/3) ... [2020-11-30 00:42:25,390 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5775171c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 12:42:25, skipping insertion in model container [2020-11-30 00:42:25,390 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:42:24" (2/3) ... [2020-11-30 00:42:25,390 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5775171c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 12:42:25, skipping insertion in model container [2020-11-30 00:42:25,390 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:42:25" (3/3) ... [2020-11-30 00:42:25,392 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1210.c [2020-11-30 00:42:25,404 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 00:42:25,409 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-30 00:42:25,422 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-30 00:42:25,452 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 00:42:25,453 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 00:42:25,453 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 00:42:25,453 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 00:42:25,454 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 00:42:25,454 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 00:42:25,454 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 00:42:25,454 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 00:42:25,473 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2020-11-30 00:42:25,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-30 00:42:25,480 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:42:25,481 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:42:25,482 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:42:25,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:42:25,490 INFO L82 PathProgramCache]: Analyzing trace with hash -556426464, now seen corresponding path program 1 times [2020-11-30 00:42:25,502 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:42:25,503 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467578459] [2020-11-30 00:42:25,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:42:25,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:42:25,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:42:25,675 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467578459] [2020-11-30 00:42:25,676 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:42:25,677 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 00:42:25,678 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705013514] [2020-11-30 00:42:25,684 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-30 00:42:25,684 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:42:25,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-30 00:42:25,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-30 00:42:25,706 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 2 states. [2020-11-30 00:42:25,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:42:25,732 INFO L93 Difference]: Finished difference Result 67 states and 103 transitions. [2020-11-30 00:42:25,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-30 00:42:25,734 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2020-11-30 00:42:25,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:42:25,747 INFO L225 Difference]: With dead ends: 67 [2020-11-30 00:42:25,747 INFO L226 Difference]: Without dead ends: 31 [2020-11-30 00:42:25,751 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-30 00:42:25,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-11-30 00:42:25,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-11-30 00:42:25,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-11-30 00:42:25,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2020-11-30 00:42:25,805 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 13 [2020-11-30 00:42:25,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:42:25,806 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2020-11-30 00:42:25,806 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-30 00:42:25,806 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2020-11-30 00:42:25,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-30 00:42:25,807 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:42:25,807 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:42:25,808 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-30 00:42:25,808 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:42:25,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:42:25,809 INFO L82 PathProgramCache]: Analyzing trace with hash -56818241, now seen corresponding path program 1 times [2020-11-30 00:42:25,810 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:42:25,810 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490927282] [2020-11-30 00:42:25,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:42:25,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:42:26,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:42:26,031 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490927282] [2020-11-30 00:42:26,031 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:42:26,031 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 00:42:26,031 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506159936] [2020-11-30 00:42:26,033 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 00:42:26,033 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:42:26,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 00:42:26,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:42:26,035 INFO L87 Difference]: Start difference. First operand 31 states and 34 transitions. Second operand 3 states. [2020-11-30 00:42:26,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:42:26,082 INFO L93 Difference]: Finished difference Result 34 states and 36 transitions. [2020-11-30 00:42:26,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 00:42:26,085 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2020-11-30 00:42:26,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:42:26,087 INFO L225 Difference]: With dead ends: 34 [2020-11-30 00:42:26,087 INFO L226 Difference]: Without dead ends: 31 [2020-11-30 00:42:26,088 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:42:26,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-11-30 00:42:26,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-11-30 00:42:26,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-11-30 00:42:26,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 33 transitions. [2020-11-30 00:42:26,100 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 33 transitions. Word has length 15 [2020-11-30 00:42:26,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:42:26,100 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 33 transitions. [2020-11-30 00:42:26,102 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 00:42:26,102 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 33 transitions. [2020-11-30 00:42:26,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-30 00:42:26,106 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:42:26,107 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:42:26,108 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-30 00:42:26,109 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:42:26,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:42:26,113 INFO L82 PathProgramCache]: Analyzing trace with hash -1761490312, now seen corresponding path program 1 times [2020-11-30 00:42:26,113 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:42:26,113 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268676084] [2020-11-30 00:42:26,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:42:26,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:42:26,238 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:42:26,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:42:26,287 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:42:26,334 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:42:26,335 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-30 00:42:26,339 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-30 00:42:26,410 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 12:42:26 BoogieIcfgContainer [2020-11-30 00:42:26,410 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 00:42:26,411 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 00:42:26,411 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 00:42:26,411 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 00:42:26,412 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:42:25" (3/4) ... [2020-11-30 00:42:26,418 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-30 00:42:26,419 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 00:42:26,421 INFO L168 Benchmark]: Toolchain (without parser) took 2336.00 ms. Allocated memory was 86.0 MB in the beginning and 107.0 MB in the end (delta: 21.0 MB). Free memory was 50.6 MB in the beginning and 68.1 MB in the end (delta: -17.5 MB). Peak memory consumption was 2.4 MB. Max. memory is 16.1 GB. [2020-11-30 00:42:26,422 INFO L168 Benchmark]: CDTParser took 0.47 ms. Allocated memory is still 86.0 MB. Free memory is still 51.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:42:26,425 INFO L168 Benchmark]: CACSL2BoogieTranslator took 346.36 ms. Allocated memory was 86.0 MB in the beginning and 107.0 MB in the end (delta: 21.0 MB). Free memory was 50.4 MB in the beginning and 85.4 MB in the end (delta: -35.0 MB). Peak memory consumption was 12.9 MB. Max. memory is 16.1 GB. [2020-11-30 00:42:26,427 INFO L168 Benchmark]: Boogie Procedure Inliner took 86.68 ms. Allocated memory is still 107.0 MB. Free memory was 85.4 MB in the beginning and 85.8 MB in the end (delta: -381.5 kB). Peak memory consumption was 4.0 MB. Max. memory is 16.1 GB. [2020-11-30 00:42:26,428 INFO L168 Benchmark]: Boogie Preprocessor took 46.36 ms. Allocated memory is still 107.0 MB. Free memory was 85.8 MB in the beginning and 83.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:42:26,428 INFO L168 Benchmark]: RCFGBuilder took 807.37 ms. Allocated memory is still 107.0 MB. Free memory was 83.7 MB in the beginning and 60.6 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:42:26,429 INFO L168 Benchmark]: TraceAbstraction took 1025.40 ms. Allocated memory is still 107.0 MB. Free memory was 60.6 MB in the beginning and 68.1 MB in the end (delta: -7.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:42:26,430 INFO L168 Benchmark]: Witness Printer took 8.15 ms. Allocated memory is still 107.0 MB. Free memory is still 68.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:42:26,434 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.47 ms. Allocated memory is still 86.0 MB. Free memory is still 51.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 346.36 ms. Allocated memory was 86.0 MB in the beginning and 107.0 MB in the end (delta: 21.0 MB). Free memory was 50.4 MB in the beginning and 85.4 MB in the end (delta: -35.0 MB). Peak memory consumption was 12.9 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 86.68 ms. Allocated memory is still 107.0 MB. Free memory was 85.4 MB in the beginning and 85.8 MB in the end (delta: -381.5 kB). Peak memory consumption was 4.0 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 46.36 ms. Allocated memory is still 107.0 MB. Free memory was 85.8 MB in the beginning and 83.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 807.37 ms. Allocated memory is still 107.0 MB. Free memory was 83.7 MB in the beginning and 60.6 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1025.40 ms. Allocated memory is still 107.0 MB. Free memory was 60.6 MB in the beginning and 68.1 MB in the end (delta: -7.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 8.15 ms. Allocated memory is still 107.0 MB. Free memory is still 68.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 75, overapproximation of someBinaryArithmeticFLOAToperation at line 82, overapproximation of bitwiseAnd at line 28. Possible FailurePath: [L13] static const float one_modf = 1.0; VAL [one_modf=1] [L82] float x = 0.0f / 0.0f; [L83] float iptr; [L16] __int32_t i0, j0; [L17] __uint32_t i; VAL [one_modf=1] [L19] ieee_float_shape_type gf_u; [L20] gf_u.value = (x) [L21] EXPR gf_u.word [L21] (i0) = gf_u.word [L23] j0 = ((i0 >> 23) & 0xff) - 0x7f VAL [one_modf=1] [L24] COND TRUE j0 < 23 VAL [one_modf=1] [L25] COND TRUE j0 < 0 VAL [one_modf=1] [L27] ieee_float_shape_type sf_u; [L28] sf_u.word = (i0 & 0x80000000) [L29] EXPR sf_u.value [L29] (*iptr) = sf_u.value [L31] return x; VAL [one_modf=1] [L84] float res = modf_float(x, &iptr); [L87] EXPR \read(iptr) [L75] return x != x; VAL [one_modf=1] [L87] isnan_float(iptr) && !isnan_float(res) [L75] return x != x; VAL [one_modf=1] [L87] isnan_float(iptr) && !isnan_float(res) VAL [one_modf=1] [L87] COND TRUE isnan_float(iptr) && !isnan_float(res) [L3] __assert_fail("0", "float_req_bl_1210.c", 3, "reach_error") VAL [one_modf=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 35 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.8s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 71 SDtfs, 0 SDslu, 28 SDs, 0 SdLazy, 5 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=35occurred 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 44 NumberOfCodeBlocks, 44 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 26 ConstructedInterpolants, 0 QuantifiedInterpolants, 354 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 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 could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-a4ecdab [2020-11-30 00:42:29,538 INFO L177 SettingsManager]: Resetting all preferences to default values... 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[2020-11-30 00:42:29,676 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 00:42:29,677 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 00:42:29,678 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 00:42:29,681 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 00:42:29,684 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 00:42:29,686 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 00:42:29,687 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 00:42:29,687 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 00:42:29,688 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 00:42:29,689 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 00:42:29,692 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 00:42:29,693 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_20b6e602-2dfd-41a2-97e7-35f13e48d344/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-11-30 00:42:29,761 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 00:42:29,762 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 00:42:29,766 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-30 00:42:29,766 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-30 00:42:29,766 INFO L138 SettingsManager]: * Use SBE=true [2020-11-30 00:42:29,767 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 00:42:29,767 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 00:42:29,767 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 00:42:29,768 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 00:42:29,768 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 00:42:29,769 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 00:42:29,770 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 00:42:29,770 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-30 00:42:29,770 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-30 00:42:29,771 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 00:42:29,771 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 00:42:29,771 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 00:42:29,772 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 00:42:29,772 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 00:42:29,772 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-30 00:42:29,773 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 00:42:29,773 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 00:42:29,773 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 00:42:29,774 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 00:42:29,774 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 00:42:29,774 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 00:42:29,774 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-11-30 00:42:29,775 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-30 00:42:29,775 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 00:42:29,775 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 00:42:29,776 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-30 00:42:29,776 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_20b6e602-2dfd-41a2-97e7-35f13e48d344/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_20b6e602-2dfd-41a2-97e7-35f13e48d344/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6a2ce6cad1ff26c462bd542dafb3ac3798055daa [2020-11-30 00:42:30,333 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 00:42:30,386 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 00:42:30,392 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 00:42:30,394 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 00:42:30,395 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 00:42:30,397 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_20b6e602-2dfd-41a2-97e7-35f13e48d344/bin/uautomizer/../../sv-benchmarks/c/float-newlib/float_req_bl_1210.c [2020-11-30 00:42:30,499 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_20b6e602-2dfd-41a2-97e7-35f13e48d344/bin/uautomizer/data/a77a691d3/a744887f4e634bb2b518346e59afeac7/FLAGaf3b931a1 [2020-11-30 00:42:31,214 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 00:42:31,219 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_20b6e602-2dfd-41a2-97e7-35f13e48d344/sv-benchmarks/c/float-newlib/float_req_bl_1210.c [2020-11-30 00:42:31,229 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_20b6e602-2dfd-41a2-97e7-35f13e48d344/bin/uautomizer/data/a77a691d3/a744887f4e634bb2b518346e59afeac7/FLAGaf3b931a1 [2020-11-30 00:42:31,515 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_20b6e602-2dfd-41a2-97e7-35f13e48d344/bin/uautomizer/data/a77a691d3/a744887f4e634bb2b518346e59afeac7 [2020-11-30 00:42:31,520 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 00:42:31,522 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 00:42:31,524 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 00:42:31,524 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 00:42:31,529 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 00:42:31,530 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:42:31" (1/1) ... [2020-11-30 00:42:31,533 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2fe49b14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:42:31, skipping insertion in model container [2020-11-30 00:42:31,533 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:42:31" (1/1) ... [2020-11-30 00:42:31,544 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 00:42:31,567 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 00:42:31,803 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:42:31,822 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 00:42:31,933 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:42:31,981 INFO L208 MainTranslator]: Completed translation [2020-11-30 00:42:31,982 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:42:31 WrapperNode [2020-11-30 00:42:31,982 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 00:42:31,985 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 00:42:31,986 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 00:42:31,986 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 00:42:31,995 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:42:31" (1/1) ... [2020-11-30 00:42:32,011 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:42:31" (1/1) ... [2020-11-30 00:42:32,044 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 00:42:32,045 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 00:42:32,045 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 00:42:32,045 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 00:42:32,060 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:42:31" (1/1) ... [2020-11-30 00:42:32,061 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:42:31" (1/1) ... [2020-11-30 00:42:32,087 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:42:31" (1/1) ... [2020-11-30 00:42:32,088 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:42:31" (1/1) ... [2020-11-30 00:42:32,101 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:42:31" (1/1) ... [2020-11-30 00:42:32,123 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:42:31" (1/1) ... [2020-11-30 00:42:32,129 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:42:31" (1/1) ... [2020-11-30 00:42:32,141 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 00:42:32,150 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 00:42:32,150 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 00:42:32,151 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 00:42:32,152 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:42:31" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_20b6e602-2dfd-41a2-97e7-35f13e48d344/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 [2020-11-30 00:42:32,237 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-30 00:42:32,238 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 00:42:32,238 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2020-11-30 00:42:32,238 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-11-30 00:42:32,238 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 00:42:32,238 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 00:42:32,239 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2020-11-30 00:42:32,239 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-11-30 00:42:32,239 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-30 00:42:33,241 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 00:42:33,242 INFO L298 CfgBuilder]: Removed 26 assume(true) statements. [2020-11-30 00:42:33,244 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:42:33 BoogieIcfgContainer [2020-11-30 00:42:33,244 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 00:42:33,246 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 00:42:33,247 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 00:42:33,251 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 00:42:33,252 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 12:42:31" (1/3) ... [2020-11-30 00:42:33,253 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ee4df30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 12:42:33, skipping insertion in model container [2020-11-30 00:42:33,253 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:42:31" (2/3) ... [2020-11-30 00:42:33,254 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ee4df30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 12:42:33, skipping insertion in model container [2020-11-30 00:42:33,254 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:42:33" (3/3) ... [2020-11-30 00:42:33,256 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1210.c [2020-11-30 00:42:33,272 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 00:42:33,279 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-30 00:42:33,295 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-30 00:42:33,326 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 00:42:33,326 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 00:42:33,327 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 00:42:33,327 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 00:42:33,327 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 00:42:33,327 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 00:42:33,328 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 00:42:33,328 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 00:42:33,346 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2020-11-30 00:42:33,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-30 00:42:33,354 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:42:33,355 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:42:33,356 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:42:33,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:42:33,365 INFO L82 PathProgramCache]: Analyzing trace with hash -556426464, now seen corresponding path program 1 times [2020-11-30 00:42:33,383 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 00:42:33,384 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2001803593] [2020-11-30 00:42:33,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_20b6e602-2dfd-41a2-97e7-35f13e48d344/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 [2020-11-30 00:42:33,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:42:33,707 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 1 conjunts are in the unsatisfiable core [2020-11-30 00:42:33,726 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:42:33,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:42:33,757 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 00:42:33,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:42:33,769 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2001803593] [2020-11-30 00:42:33,770 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:42:33,771 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-11-30 00:42:33,772 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235670695] [2020-11-30 00:42:33,778 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-30 00:42:33,779 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-30 00:42:33,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-30 00:42:33,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-30 00:42:33,807 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 2 states. [2020-11-30 00:42:33,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:42:33,862 INFO L93 Difference]: Finished difference Result 67 states and 103 transitions. [2020-11-30 00:42:33,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-30 00:42:33,864 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2020-11-30 00:42:33,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:42:33,876 INFO L225 Difference]: With dead ends: 67 [2020-11-30 00:42:33,880 INFO L226 Difference]: Without dead ends: 31 [2020-11-30 00:42:33,885 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 [2020-11-30 00:42:33,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-11-30 00:42:33,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-11-30 00:42:33,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-11-30 00:42:33,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2020-11-30 00:42:33,942 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 13 [2020-11-30 00:42:33,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:42:33,944 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2020-11-30 00:42:33,944 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-30 00:42:33,944 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2020-11-30 00:42:33,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-30 00:42:33,945 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:42:33,946 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:42:34,159 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-30 00:42:34,160 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:42:34,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:42:34,161 INFO L82 PathProgramCache]: Analyzing trace with hash -56818241, now seen corresponding path program 1 times [2020-11-30 00:42:34,162 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 00:42:34,162 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [74117857] [2020-11-30 00:42:34,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_20b6e602-2dfd-41a2-97e7-35f13e48d344/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 [2020-11-30 00:42:34,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:42:34,296 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-30 00:42:34,299 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:42:34,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:42:34,547 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 00:42:34,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:42:34,776 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [74117857] [2020-11-30 00:42:34,776 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:42:34,776 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2020-11-30 00:42:34,777 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15959337] [2020-11-30 00:42:34,778 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-30 00:42:34,779 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-30 00:42:34,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-30 00:42:34,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-11-30 00:42:34,784 INFO L87 Difference]: Start difference. First operand 31 states and 34 transitions. Second operand 8 states. [2020-11-30 00:42:35,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:42:35,299 INFO L93 Difference]: Finished difference Result 38 states and 41 transitions. [2020-11-30 00:42:35,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-30 00:42:35,301 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 15 [2020-11-30 00:42:35,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:42:35,302 INFO L225 Difference]: With dead ends: 38 [2020-11-30 00:42:35,302 INFO L226 Difference]: Without dead ends: 18 [2020-11-30 00:42:35,303 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-11-30 00:42:35,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-11-30 00:42:35,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2020-11-30 00:42:35,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-11-30 00:42:35,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2020-11-30 00:42:35,310 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 15 [2020-11-30 00:42:35,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:42:35,311 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2020-11-30 00:42:35,311 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-30 00:42:35,311 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2020-11-30 00:42:35,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-30 00:42:35,312 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:42:35,312 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:42:35,534 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-30 00:42:35,535 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:42:35,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:42:35,536 INFO L82 PathProgramCache]: Analyzing trace with hash 1951048762, now seen corresponding path program 1 times [2020-11-30 00:42:35,537 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 00:42:35,537 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [690546940] [2020-11-30 00:42:35,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_20b6e602-2dfd-41a2-97e7-35f13e48d344/bin/uautomizer/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-11-30 00:42:35,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:42:35,749 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-30 00:42:35,751 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:42:35,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:42:35,763 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 00:42:35,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:42:35,766 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [690546940] [2020-11-30 00:42:35,766 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:42:35,766 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2020-11-30 00:42:35,767 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196692555] [2020-11-30 00:42:35,767 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 00:42:35,767 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-30 00:42:35,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 00:42:35,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:42:35,768 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand 3 states. [2020-11-30 00:42:35,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:42:35,811 INFO L93 Difference]: Finished difference Result 21 states and 20 transitions. [2020-11-30 00:42:35,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 00:42:35,812 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2020-11-30 00:42:35,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:42:35,813 INFO L225 Difference]: With dead ends: 21 [2020-11-30 00:42:35,813 INFO L226 Difference]: Without dead ends: 18 [2020-11-30 00:42:35,814 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:42:35,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-11-30 00:42:35,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2020-11-30 00:42:35,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-11-30 00:42:35,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 17 transitions. [2020-11-30 00:42:35,820 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 17 transitions. Word has length 16 [2020-11-30 00:42:35,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:42:35,821 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 17 transitions. [2020-11-30 00:42:35,821 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 00:42:35,821 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 17 transitions. [2020-11-30 00:42:35,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-30 00:42:35,822 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:42:35,822 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:42:36,037 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-11-30 00:42:36,038 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:42:36,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:42:36,038 INFO L82 PathProgramCache]: Analyzing trace with hash 352844637, now seen corresponding path program 1 times [2020-11-30 00:42:36,039 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 00:42:36,039 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [859827125] [2020-11-30 00:42:36,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_20b6e602-2dfd-41a2-97e7-35f13e48d344/bin/uautomizer/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2020-11-30 00:42:36,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:42:36,396 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:42:36,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:42:36,740 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:42:36,836 INFO L173 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-11-30 00:42:36,837 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-30 00:42:37,037 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-11-30 00:42:37,091 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 12:42:37 BoogieIcfgContainer [2020-11-30 00:42:37,092 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 00:42:37,093 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 00:42:37,093 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 00:42:37,093 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 00:42:37,094 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:42:33" (3/4) ... [2020-11-30 00:42:37,097 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-30 00:42:37,164 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_20b6e602-2dfd-41a2-97e7-35f13e48d344/bin/uautomizer/witness.graphml [2020-11-30 00:42:37,164 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 00:42:37,175 INFO L168 Benchmark]: Toolchain (without parser) took 5651.96 ms. Allocated memory was 62.9 MB in the beginning and 83.9 MB in the end (delta: 21.0 MB). Free memory was 44.6 MB in the beginning and 57.4 MB in the end (delta: -12.7 MB). Peak memory consumption was 6.6 MB. Max. memory is 16.1 GB. [2020-11-30 00:42:37,176 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 62.9 MB. Free memory is still 45.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:42:37,177 INFO L168 Benchmark]: CACSL2BoogieTranslator took 460.28 ms. Allocated memory is still 62.9 MB. Free memory was 44.5 MB in the beginning and 46.6 MB in the end (delta: -2.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-30 00:42:37,177 INFO L168 Benchmark]: Boogie Procedure Inliner took 58.56 ms. Allocated memory is still 62.9 MB. Free memory was 46.4 MB in the beginning and 44.5 MB in the end (delta: 1.9 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:42:37,178 INFO L168 Benchmark]: Boogie Preprocessor took 104.37 ms. Allocated memory is still 62.9 MB. Free memory was 44.5 MB in the beginning and 42.7 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:42:37,178 INFO L168 Benchmark]: RCFGBuilder took 1094.27 ms. Allocated memory was 62.9 MB in the beginning and 83.9 MB in the end (delta: 21.0 MB). Free memory was 42.7 MB in the beginning and 57.7 MB in the end (delta: -15.0 MB). Peak memory consumption was 18.2 MB. Max. memory is 16.1 GB. [2020-11-30 00:42:37,179 INFO L168 Benchmark]: TraceAbstraction took 3845.56 ms. Allocated memory is still 83.9 MB. Free memory was 57.3 MB in the beginning and 60.1 MB in the end (delta: -2.8 MB). Peak memory consumption was 29.2 MB. Max. memory is 16.1 GB. [2020-11-30 00:42:37,179 INFO L168 Benchmark]: Witness Printer took 79.89 ms. Allocated memory is still 83.9 MB. Free memory was 60.1 MB in the beginning and 57.4 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:42:37,183 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34 ms. Allocated memory is still 62.9 MB. Free memory is still 45.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 460.28 ms. Allocated memory is still 62.9 MB. Free memory was 44.5 MB in the beginning and 46.6 MB in the end (delta: -2.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 58.56 ms. Allocated memory is still 62.9 MB. Free memory was 46.4 MB in the beginning and 44.5 MB in the end (delta: 1.9 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 104.37 ms. Allocated memory is still 62.9 MB. Free memory was 44.5 MB in the beginning and 42.7 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1094.27 ms. Allocated memory was 62.9 MB in the beginning and 83.9 MB in the end (delta: 21.0 MB). Free memory was 42.7 MB in the beginning and 57.7 MB in the end (delta: -15.0 MB). Peak memory consumption was 18.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3845.56 ms. Allocated memory is still 83.9 MB. Free memory was 57.3 MB in the beginning and 60.1 MB in the end (delta: -2.8 MB). Peak memory consumption was 29.2 MB. Max. memory is 16.1 GB. * Witness Printer took 79.89 ms. Allocated memory is still 83.9 MB. Free memory was 60.1 MB in the beginning and 57.4 MB in the end (delta: 2.8 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: [L13] static const float one_modf = 1.0; VAL [one_modf=1.0] [L82] float x = 0.0f / 0.0f; [L83] float iptr; [L16] __int32_t i0, j0; [L17] __uint32_t i; VAL [one_modf=1.0] [L19] ieee_float_shape_type gf_u; [L20] gf_u.value = (x) [L21] EXPR gf_u.word [L21] (i0) = gf_u.word [L23] j0 = ((i0 >> 23) & 0xff) - 0x7f VAL [one_modf=1.0] [L24] COND FALSE !(j0 < 23) [L58] __uint32_t ix; [L59] *iptr = x * one_modf VAL [one_modf=1.0] [L61] ieee_float_shape_type gf_u; [L62] gf_u.value = (x) [L63] EXPR gf_u.word [L63] (ix) = gf_u.word [L66] ieee_float_shape_type sf_u; [L67] sf_u.word = (ix & 0x80000000) [L68] EXPR sf_u.value [L68] (x) = sf_u.value [L70] return x; VAL [one_modf=1.0] [L84] float res = modf_float(x, &iptr); [L87] EXPR \read(iptr) [L75] return x != x; VAL [one_modf=1.0] [L87] isnan_float(iptr) && !isnan_float(res) [L75] return x != x; VAL [one_modf=1.0] [L87] isnan_float(iptr) && !isnan_float(res) VAL [one_modf=1.0] [L87] COND TRUE isnan_float(iptr) && !isnan_float(res) [L3] __assert_fail("0", "float_req_bl_1210.c", 3, "reach_error") VAL [one_modf=1.0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 35 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 3.7s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 69 SDtfs, 46 SDslu, 34 SDs, 0 SdLazy, 17 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 85 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=35occurred 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, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 61 NumberOfCodeBlocks, 61 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 82 ConstructedInterpolants, 5 QuantifiedInterpolants, 2476 SizeOfPredicates, 8 NumberOfNonLiveVariables, 204 ConjunctsInSsa, 11 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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...