./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/double_req_bl_1012b.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_41c1fae3-1f24-4b7d-8aef-c988123c66bf/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_41c1fae3-1f24-4b7d-8aef-c988123c66bf/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_41c1fae3-1f24-4b7d-8aef-c988123c66bf/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_41c1fae3-1f24-4b7d-8aef-c988123c66bf/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1012b.c -s /tmp/vcloud-vcloud-master/worker/run_dir_41c1fae3-1f24-4b7d-8aef-c988123c66bf/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_41c1fae3-1f24-4b7d-8aef-c988123c66bf/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 375bec20b72ecdcbd44e4f617a51a92835ad48e7 ................................................................................................................................................................................................................................................................................................... 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_41c1fae3-1f24-4b7d-8aef-c988123c66bf/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_41c1fae3-1f24-4b7d-8aef-c988123c66bf/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_41c1fae3-1f24-4b7d-8aef-c988123c66bf/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_41c1fae3-1f24-4b7d-8aef-c988123c66bf/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1012b.c -s /tmp/vcloud-vcloud-master/worker/run_dir_41c1fae3-1f24-4b7d-8aef-c988123c66bf/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_41c1fae3-1f24-4b7d-8aef-c988123c66bf/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 375bec20b72ecdcbd44e4f617a51a92835ad48e7 ............................................................................................................................................................................................................................................................................................................... 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 03:13:49,832 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 03:13:49,834 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 03:13:49,914 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 03:13:49,915 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 03:13:49,919 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 03:13:49,923 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 03:13:49,927 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 03:13:49,929 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 03:13:49,935 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 03:13:49,936 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 03:13:49,938 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 03:13:49,939 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 03:13:49,942 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 03:13:49,944 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 03:13:49,946 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 03:13:49,947 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 03:13:49,949 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 03:13:49,955 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 03:13:49,962 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 03:13:49,964 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 03:13:49,965 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 03:13:49,968 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 03:13:49,969 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 03:13:49,981 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 03:13:49,981 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 03:13:49,982 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 03:13:49,984 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 03:13:49,985 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 03:13:49,986 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 03:13:49,987 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 03:13:49,988 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 03:13:49,990 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 03:13:49,991 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 03:13:49,992 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 03:13:49,992 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 03:13:49,993 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 03:13:49,994 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 03:13:49,994 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 03:13:49,996 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 03:13:49,997 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 03:13:49,999 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_41c1fae3-1f24-4b7d-8aef-c988123c66bf/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-28 03:13:50,042 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 03:13:50,042 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 03:13:50,044 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 03:13:50,045 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 03:13:50,045 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 03:13:50,045 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 03:13:50,045 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 03:13:50,046 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 03:13:50,046 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 03:13:50,046 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 03:13:50,047 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 03:13:50,048 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 03:13:50,048 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 03:13:50,048 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 03:13:50,049 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 03:13:50,049 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 03:13:50,049 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 03:13:50,050 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 03:13:50,050 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 03:13:50,050 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 03:13:50,050 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 03:13:50,051 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 03:13:50,051 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 03:13:50,051 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 03:13:50,052 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 03:13:50,052 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 03:13:50,052 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 03:13:50,053 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 03:13:50,053 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 03:13:50,053 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_41c1fae3-1f24-4b7d-8aef-c988123c66bf/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_41c1fae3-1f24-4b7d-8aef-c988123c66bf/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 375bec20b72ecdcbd44e4f617a51a92835ad48e7 [2020-11-28 03:13:50,314 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 03:13:50,339 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 03:13:50,343 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 03:13:50,345 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 03:13:50,346 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 03:13:50,347 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_41c1fae3-1f24-4b7d-8aef-c988123c66bf/bin/uautomizer/../../sv-benchmarks/c/float-newlib/double_req_bl_1012b.c [2020-11-28 03:13:50,431 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_41c1fae3-1f24-4b7d-8aef-c988123c66bf/bin/uautomizer/data/3bcfc939e/e68034f6eee8450c9944bf0cdd7fa8be/FLAG167d968b9 [2020-11-28 03:13:50,928 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 03:13:50,928 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_41c1fae3-1f24-4b7d-8aef-c988123c66bf/sv-benchmarks/c/float-newlib/double_req_bl_1012b.c [2020-11-28 03:13:50,934 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_41c1fae3-1f24-4b7d-8aef-c988123c66bf/bin/uautomizer/data/3bcfc939e/e68034f6eee8450c9944bf0cdd7fa8be/FLAG167d968b9 [2020-11-28 03:13:51,317 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_41c1fae3-1f24-4b7d-8aef-c988123c66bf/bin/uautomizer/data/3bcfc939e/e68034f6eee8450c9944bf0cdd7fa8be [2020-11-28 03:13:51,319 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 03:13:51,320 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 03:13:51,322 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 03:13:51,322 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 03:13:51,326 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 03:13:51,327 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:13:51" (1/1) ... [2020-11-28 03:13:51,329 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a8ac3f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:13:51, skipping insertion in model container [2020-11-28 03:13:51,329 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:13:51" (1/1) ... [2020-11-28 03:13:51,336 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 03:13:51,353 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 03:13:51,565 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:13:51,573 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 03:13:51,612 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:13:51,625 INFO L208 MainTranslator]: Completed translation [2020-11-28 03:13:51,626 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:13:51 WrapperNode [2020-11-28 03:13:51,626 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 03:13:51,627 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 03:13:51,627 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 03:13:51,627 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 03:13:51,634 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:13:51" (1/1) ... [2020-11-28 03:13:51,642 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:13:51" (1/1) ... [2020-11-28 03:13:51,663 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 03:13:51,664 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 03:13:51,664 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 03:13:51,664 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 03:13:51,673 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:13:51" (1/1) ... [2020-11-28 03:13:51,673 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:13:51" (1/1) ... [2020-11-28 03:13:51,676 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:13:51" (1/1) ... [2020-11-28 03:13:51,676 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:13:51" (1/1) ... [2020-11-28 03:13:51,685 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:13:51" (1/1) ... [2020-11-28 03:13:51,689 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:13:51" (1/1) ... [2020-11-28 03:13:51,691 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:13:51" (1/1) ... [2020-11-28 03:13:51,693 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 03:13:51,694 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 03:13:51,694 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 03:13:51,694 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 03:13:51,695 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:13:51" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_41c1fae3-1f24-4b7d-8aef-c988123c66bf/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 03:13:51,771 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 03:13:51,771 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 03:13:51,771 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-11-28 03:13:51,772 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-28 03:13:51,772 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-11-28 03:13:51,772 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 03:13:51,772 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 03:13:51,772 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-28 03:13:51,772 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-28 03:13:52,118 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 03:13:52,119 INFO L298 CfgBuilder]: Removed 16 assume(true) statements. [2020-11-28 03:13:52,120 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:13:52 BoogieIcfgContainer [2020-11-28 03:13:52,120 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 03:13:52,122 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 03:13:52,122 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 03:13:52,144 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 03:13:52,144 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:13:51" (1/3) ... [2020-11-28 03:13:52,145 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@774044d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:13:52, skipping insertion in model container [2020-11-28 03:13:52,145 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:13:51" (2/3) ... [2020-11-28 03:13:52,145 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@774044d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:13:52, skipping insertion in model container [2020-11-28 03:13:52,145 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:13:52" (3/3) ... [2020-11-28 03:13:52,147 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1012b.c [2020-11-28 03:13:52,157 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 03:13:52,162 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-28 03:13:52,191 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-28 03:13:52,236 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 03:13:52,236 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 03:13:52,236 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 03:13:52,236 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 03:13:52,236 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 03:13:52,237 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 03:13:52,237 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 03:13:52,237 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 03:13:52,249 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2020-11-28 03:13:52,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-28 03:13:52,254 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:13:52,255 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:13:52,256 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:13:52,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:13:52,261 INFO L82 PathProgramCache]: Analyzing trace with hash -969083750, now seen corresponding path program 1 times [2020-11-28 03:13:52,270 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:13:52,270 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360293287] [2020-11-28 03:13:52,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:13:52,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:13:52,397 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 03:13:52,397 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360293287] [2020-11-28 03:13:52,398 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:13:52,398 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 03:13:52,399 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942158256] [2020-11-28 03:13:52,403 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-28 03:13:52,404 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:13:52,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-28 03:13:52,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 03:13:52,419 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 2 states. [2020-11-28 03:13:52,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:13:52,434 INFO L93 Difference]: Finished difference Result 35 states and 47 transitions. [2020-11-28 03:13:52,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-28 03:13:52,436 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2020-11-28 03:13:52,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:13:52,444 INFO L225 Difference]: With dead ends: 35 [2020-11-28 03:13:52,444 INFO L226 Difference]: Without dead ends: 15 [2020-11-28 03:13:52,447 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 03:13:52,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2020-11-28 03:13:52,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2020-11-28 03:13:52,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-11-28 03:13:52,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 14 transitions. [2020-11-28 03:13:52,477 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 14 transitions. Word has length 11 [2020-11-28 03:13:52,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:13:52,478 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 14 transitions. [2020-11-28 03:13:52,478 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-28 03:13:52,478 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 14 transitions. [2020-11-28 03:13:52,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-28 03:13:52,479 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:13:52,479 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:13:52,479 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 03:13:52,479 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:13:52,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:13:52,480 INFO L82 PathProgramCache]: Analyzing trace with hash 657368916, now seen corresponding path program 1 times [2020-11-28 03:13:52,481 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:13:52,481 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046031779] [2020-11-28 03:13:52,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:13:52,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:13:52,605 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:13:52,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:13:52,703 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:13:52,764 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:13:52,764 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-28 03:13:52,765 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 03:13:52,805 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 03:13:52 BoogieIcfgContainer [2020-11-28 03:13:52,805 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 03:13:52,806 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 03:13:52,806 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 03:13:52,807 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 03:13:52,807 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:13:52" (3/4) ... [2020-11-28 03:13:52,810 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-28 03:13:52,810 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 03:13:52,814 INFO L168 Benchmark]: Toolchain (without parser) took 1490.77 ms. Allocated memory is still 100.7 MB. Free memory was 67.1 MB in the beginning and 72.9 MB in the end (delta: -5.8 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:13:52,816 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 75.5 MB. Free memory was 49.4 MB in the beginning and 49.4 MB in the end (delta: 28.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:13:52,817 INFO L168 Benchmark]: CACSL2BoogieTranslator took 304.01 ms. Allocated memory is still 100.7 MB. Free memory was 67.0 MB in the beginning and 77.1 MB in the end (delta: -10.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 03:13:52,818 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.46 ms. Allocated memory is still 100.7 MB. Free memory was 77.0 MB in the beginning and 75.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:13:52,819 INFO L168 Benchmark]: Boogie Preprocessor took 29.36 ms. Allocated memory is still 100.7 MB. Free memory was 75.0 MB in the beginning and 74.0 MB in the end (delta: 1.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:13:52,820 INFO L168 Benchmark]: RCFGBuilder took 426.02 ms. Allocated memory is still 100.7 MB. Free memory was 73.5 MB in the beginning and 56.7 MB in the end (delta: 16.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2020-11-28 03:13:52,822 INFO L168 Benchmark]: TraceAbstraction took 683.90 ms. Allocated memory is still 100.7 MB. Free memory was 56.2 MB in the beginning and 72.9 MB in the end (delta: -16.7 MB). Peak memory consumption was 28.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:13:52,822 INFO L168 Benchmark]: Witness Printer took 4.44 ms. Allocated memory is still 100.7 MB. Free memory is still 72.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:13:52,832 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 75.5 MB. Free memory was 49.4 MB in the beginning and 49.4 MB in the end (delta: 28.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 304.01 ms. Allocated memory is still 100.7 MB. Free memory was 67.0 MB in the beginning and 77.1 MB in the end (delta: -10.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 36.46 ms. Allocated memory is still 100.7 MB. Free memory was 77.0 MB in the beginning and 75.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 29.36 ms. Allocated memory is still 100.7 MB. Free memory was 75.0 MB in the beginning and 74.0 MB in the end (delta: 1.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 426.02 ms. Allocated memory is still 100.7 MB. Free memory was 73.5 MB in the beginning and 56.7 MB in the end (delta: 16.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 683.90 ms. Allocated memory is still 100.7 MB. Free memory was 56.2 MB in the beginning and 72.9 MB in the end (delta: -16.7 MB). Peak memory consumption was 28.1 MB. Max. memory is 16.1 GB. * Witness Printer took 4.44 ms. Allocated memory is still 100.7 MB. Free memory is still 72.9 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 bitwiseOr at line 41, overapproximation of someBinaryArithmeticDOUBLEoperation at line 70, overapproximation of bitwiseAnd at line 40. Possible FailurePath: [L70] double x = -1.0 / 0.0; [L47] __uint32_t high; [L49] ieee_double_shape_type gh_u; [L50] gh_u.value = (x) [L51] EXPR gh_u.parts.msw [L51] (high) = gh_u.parts.msw [L54] ieee_double_shape_type sh_u; [L55] sh_u.value = (x) [L56] sh_u.parts.msw = (high & 0x7fffffff) [L57] EXPR sh_u.value [L57] (x) = sh_u.value [L59] return x; [L71] double res = fabs_double(x); [L33] __int32_t hx, lx; [L35] ieee_double_shape_type ew_u; [L36] ew_u.value = (x) [L37] EXPR ew_u.parts.msw [L37] (hx) = ew_u.parts.msw [L38] EXPR ew_u.parts.lsw [L38] (lx) = ew_u.parts.lsw [L40] hx &= 0x7fffffff [L41] hx |= (__uint32_t)(lx | (-lx)) >> 31 [L42] hx = 0x7ff00000 - hx [L43] return 1 - (int)((__uint32_t)(hx | (-hx)) >> 31); [L74] COND TRUE !isinf_double(res) [L3] __assert_fail("0", "double_req_bl_1012b.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 19 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: 17 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=19occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 25 NumberOfCodeBlocks, 25 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 03:13:55,291 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 03:13:55,295 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 03:13:55,348 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 03:13:55,349 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 03:13:55,353 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 03:13:55,354 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 03:13:55,357 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 03:13:55,359 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 03:13:55,361 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 03:13:55,362 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 03:13:55,377 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 03:13:55,377 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 03:13:55,379 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 03:13:55,380 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 03:13:55,382 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 03:13:55,383 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 03:13:55,384 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 03:13:55,386 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 03:13:55,389 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 03:13:55,391 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 03:13:55,393 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 03:13:55,394 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 03:13:55,395 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 03:13:55,399 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 03:13:55,400 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 03:13:55,400 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 03:13:55,401 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 03:13:55,402 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 03:13:55,403 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 03:13:55,404 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 03:13:55,405 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 03:13:55,406 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 03:13:55,407 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 03:13:55,408 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 03:13:55,409 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 03:13:55,410 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 03:13:55,410 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 03:13:55,410 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 03:13:55,412 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 03:13:55,413 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 03:13:55,414 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_41c1fae3-1f24-4b7d-8aef-c988123c66bf/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-11-28 03:13:55,440 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 03:13:55,441 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 03:13:55,442 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 03:13:55,443 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 03:13:55,443 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 03:13:55,443 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 03:13:55,444 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 03:13:55,444 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 03:13:55,444 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 03:13:55,444 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 03:13:55,444 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 03:13:55,445 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 03:13:55,445 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-28 03:13:55,445 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-28 03:13:55,445 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 03:13:55,446 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 03:13:55,446 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 03:13:55,446 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 03:13:55,447 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 03:13:55,447 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 03:13:55,447 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 03:13:55,447 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 03:13:55,447 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 03:13:55,448 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 03:13:55,448 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 03:13:55,448 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 03:13:55,449 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-11-28 03:13:55,449 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-28 03:13:55,449 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 03:13:55,449 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 03:13:55,449 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-28 03:13:55,450 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_41c1fae3-1f24-4b7d-8aef-c988123c66bf/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_41c1fae3-1f24-4b7d-8aef-c988123c66bf/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 375bec20b72ecdcbd44e4f617a51a92835ad48e7 [2020-11-28 03:13:55,803 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 03:13:55,828 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 03:13:55,832 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 03:13:55,834 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 03:13:55,834 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 03:13:55,835 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_41c1fae3-1f24-4b7d-8aef-c988123c66bf/bin/uautomizer/../../sv-benchmarks/c/float-newlib/double_req_bl_1012b.c [2020-11-28 03:13:55,907 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_41c1fae3-1f24-4b7d-8aef-c988123c66bf/bin/uautomizer/data/4f694ddb9/67082149c1364c1b973a745a4214b607/FLAG49bb83682 [2020-11-28 03:13:56,407 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 03:13:56,408 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_41c1fae3-1f24-4b7d-8aef-c988123c66bf/sv-benchmarks/c/float-newlib/double_req_bl_1012b.c [2020-11-28 03:13:56,416 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_41c1fae3-1f24-4b7d-8aef-c988123c66bf/bin/uautomizer/data/4f694ddb9/67082149c1364c1b973a745a4214b607/FLAG49bb83682 [2020-11-28 03:13:56,757 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_41c1fae3-1f24-4b7d-8aef-c988123c66bf/bin/uautomizer/data/4f694ddb9/67082149c1364c1b973a745a4214b607 [2020-11-28 03:13:56,759 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 03:13:56,761 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 03:13:56,762 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 03:13:56,763 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 03:13:56,766 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 03:13:56,767 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:13:56" (1/1) ... [2020-11-28 03:13:56,768 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3da5319b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:13:56, skipping insertion in model container [2020-11-28 03:13:56,769 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:13:56" (1/1) ... [2020-11-28 03:13:56,776 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 03:13:56,791 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 03:13:56,952 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:13:56,965 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 03:13:56,992 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:13:57,027 INFO L208 MainTranslator]: Completed translation [2020-11-28 03:13:57,028 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:13:57 WrapperNode [2020-11-28 03:13:57,028 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 03:13:57,029 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 03:13:57,029 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 03:13:57,029 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 03:13:57,036 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:13:57" (1/1) ... [2020-11-28 03:13:57,080 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:13:57" (1/1) ... [2020-11-28 03:13:57,098 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 03:13:57,099 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 03:13:57,099 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 03:13:57,099 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 03:13:57,107 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:13:57" (1/1) ... [2020-11-28 03:13:57,108 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:13:57" (1/1) ... [2020-11-28 03:13:57,112 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:13:57" (1/1) ... [2020-11-28 03:13:57,112 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:13:57" (1/1) ... [2020-11-28 03:13:57,123 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:13:57" (1/1) ... [2020-11-28 03:13:57,127 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:13:57" (1/1) ... [2020-11-28 03:13:57,130 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:13:57" (1/1) ... [2020-11-28 03:13:57,133 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 03:13:57,134 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 03:13:57,134 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 03:13:57,134 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 03:13:57,135 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:13:57" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_41c1fae3-1f24-4b7d-8aef-c988123c66bf/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 03:13:57,208 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2020-11-28 03:13:57,210 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2020-11-28 03:13:57,210 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-28 03:13:57,210 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 03:13:57,211 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-11-28 03:13:57,211 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 03:13:57,211 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 03:13:57,213 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-11-28 03:13:57,214 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-28 03:13:57,680 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 03:13:57,680 INFO L298 CfgBuilder]: Removed 16 assume(true) statements. [2020-11-28 03:13:57,681 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:13:57 BoogieIcfgContainer [2020-11-28 03:13:57,682 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 03:13:57,686 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 03:13:57,686 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 03:13:57,689 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 03:13:57,689 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:13:56" (1/3) ... [2020-11-28 03:13:57,690 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38050baa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:13:57, skipping insertion in model container [2020-11-28 03:13:57,690 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:13:57" (2/3) ... [2020-11-28 03:13:57,690 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38050baa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:13:57, skipping insertion in model container [2020-11-28 03:13:57,691 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:13:57" (3/3) ... [2020-11-28 03:13:57,692 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1012b.c [2020-11-28 03:13:57,705 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 03:13:57,710 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-28 03:13:57,722 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-28 03:13:57,759 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 03:13:57,760 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 03:13:57,760 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 03:13:57,760 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 03:13:57,760 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 03:13:57,760 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 03:13:57,760 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 03:13:57,760 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 03:13:57,774 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2020-11-28 03:13:57,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-28 03:13:57,780 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:13:57,780 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:13:57,781 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:13:57,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:13:57,787 INFO L82 PathProgramCache]: Analyzing trace with hash -969083750, now seen corresponding path program 1 times [2020-11-28 03:13:57,800 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-28 03:13:57,801 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1160465472] [2020-11-28 03:13:57,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_41c1fae3-1f24-4b7d-8aef-c988123c66bf/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 03:13:57,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:13:57,928 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 1 conjunts are in the unsatisfiable core [2020-11-28 03:13:57,932 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:13:57,948 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 03:13:57,948 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 03:13:57,952 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 03:13:57,953 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1160465472] [2020-11-28 03:13:57,954 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:13:57,954 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-11-28 03:13:57,955 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580714123] [2020-11-28 03:13:57,958 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-28 03:13:57,959 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-28 03:13:57,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-28 03:13:57,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 03:13:57,973 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 2 states. [2020-11-28 03:13:57,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:13:57,988 INFO L93 Difference]: Finished difference Result 35 states and 47 transitions. [2020-11-28 03:13:57,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-28 03:13:57,989 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2020-11-28 03:13:57,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:13:57,997 INFO L225 Difference]: With dead ends: 35 [2020-11-28 03:13:57,997 INFO L226 Difference]: Without dead ends: 15 [2020-11-28 03:13:57,999 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 03:13:58,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2020-11-28 03:13:58,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2020-11-28 03:13:58,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-11-28 03:13:58,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 14 transitions. [2020-11-28 03:13:58,028 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 14 transitions. Word has length 11 [2020-11-28 03:13:58,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:13:58,029 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 14 transitions. [2020-11-28 03:13:58,029 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-28 03:13:58,029 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 14 transitions. [2020-11-28 03:13:58,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-28 03:13:58,030 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:13:58,030 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:13:58,243 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-28 03:13:58,243 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:13:58,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:13:58,244 INFO L82 PathProgramCache]: Analyzing trace with hash 657368916, now seen corresponding path program 1 times [2020-11-28 03:13:58,248 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-28 03:13:58,248 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2026885682] [2020-11-28 03:13:58,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_41c1fae3-1f24-4b7d-8aef-c988123c66bf/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 03:13:58,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:13:58,511 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:13:58,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:13:58,686 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:13:58,736 INFO L173 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-11-28 03:13:58,736 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-28 03:13:58,937 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-28 03:13:58,965 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 03:13:58 BoogieIcfgContainer [2020-11-28 03:13:58,965 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 03:13:58,965 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 03:13:58,966 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 03:13:58,966 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 03:13:58,966 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:13:57" (3/4) ... [2020-11-28 03:13:58,969 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-28 03:13:59,027 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_41c1fae3-1f24-4b7d-8aef-c988123c66bf/bin/uautomizer/witness.graphml [2020-11-28 03:13:59,030 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 03:13:59,033 INFO L168 Benchmark]: Toolchain (without parser) took 2270.89 ms. Allocated memory was 58.7 MB in the beginning and 77.6 MB in the end (delta: 18.9 MB). Free memory was 44.1 MB in the beginning and 45.5 MB in the end (delta: -1.4 MB). Peak memory consumption was 17.4 MB. Max. memory is 16.1 GB. [2020-11-28 03:13:59,034 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 46.1 MB. Free memory was 29.0 MB in the beginning and 28.9 MB in the end (delta: 31.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:13:59,034 INFO L168 Benchmark]: CACSL2BoogieTranslator took 265.68 ms. Allocated memory is still 58.7 MB. Free memory was 44.0 MB in the beginning and 43.0 MB in the end (delta: 926.4 kB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-11-28 03:13:59,037 INFO L168 Benchmark]: Boogie Procedure Inliner took 69.31 ms. Allocated memory is still 58.7 MB. Free memory was 43.0 MB in the beginning and 41.4 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:13:59,038 INFO L168 Benchmark]: Boogie Preprocessor took 34.53 ms. Allocated memory is still 58.7 MB. Free memory was 41.4 MB in the beginning and 39.8 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:13:59,039 INFO L168 Benchmark]: RCFGBuilder took 547.69 ms. Allocated memory is still 58.7 MB. Free memory was 39.8 MB in the beginning and 36.7 MB in the end (delta: 3.1 MB). Peak memory consumption was 17.8 MB. Max. memory is 16.1 GB. [2020-11-28 03:13:59,040 INFO L168 Benchmark]: TraceAbstraction took 1279.36 ms. Allocated memory was 58.7 MB in the beginning and 77.6 MB in the end (delta: 18.9 MB). Free memory was 36.2 MB in the beginning and 48.1 MB in the end (delta: -11.8 MB). Peak memory consumption was 7.0 MB. Max. memory is 16.1 GB. [2020-11-28 03:13:59,041 INFO L168 Benchmark]: Witness Printer took 65.38 ms. Allocated memory is still 77.6 MB. Free memory was 47.6 MB in the beginning and 45.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:13:59,044 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 46.1 MB. Free memory was 29.0 MB in the beginning and 28.9 MB in the end (delta: 31.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 265.68 ms. Allocated memory is still 58.7 MB. Free memory was 44.0 MB in the beginning and 43.0 MB in the end (delta: 926.4 kB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 69.31 ms. Allocated memory is still 58.7 MB. Free memory was 43.0 MB in the beginning and 41.4 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 34.53 ms. Allocated memory is still 58.7 MB. Free memory was 41.4 MB in the beginning and 39.8 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 547.69 ms. Allocated memory is still 58.7 MB. Free memory was 39.8 MB in the beginning and 36.7 MB in the end (delta: 3.1 MB). Peak memory consumption was 17.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1279.36 ms. Allocated memory was 58.7 MB in the beginning and 77.6 MB in the end (delta: 18.9 MB). Free memory was 36.2 MB in the beginning and 48.1 MB in the end (delta: -11.8 MB). Peak memory consumption was 7.0 MB. Max. memory is 16.1 GB. * Witness Printer took 65.38 ms. Allocated memory is still 77.6 MB. Free memory was 47.6 MB in the beginning and 45.5 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: [L70] double x = -1.0 / 0.0; [L47] __uint32_t high; [L49] ieee_double_shape_type gh_u; [L50] gh_u.value = (x) [L51] EXPR gh_u.parts.msw [L51] (high) = gh_u.parts.msw [L54] ieee_double_shape_type sh_u; [L55] sh_u.value = (x) [L56] sh_u.parts.msw = (high & 0x7fffffff) [L57] EXPR sh_u.value [L57] (x) = sh_u.value [L59] return x; [L71] double res = fabs_double(x); [L33] __int32_t hx, lx; [L35] ieee_double_shape_type ew_u; [L36] ew_u.value = (x) [L37] EXPR ew_u.parts.msw [L37] (hx) = ew_u.parts.msw [L38] EXPR ew_u.parts.lsw [L38] (lx) = ew_u.parts.lsw [L40] hx &= 0x7fffffff [L41] hx |= (__uint32_t)(lx | (-lx)) >> 31 [L42] hx = 0x7ff00000 - hx [L43] return 1 - (int)((__uint32_t)(hx | (-hx)) >> 31); [L74] COND TRUE !isinf_double(res) [L3] __assert_fail("0", "double_req_bl_1012b.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 19 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.1s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 17 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=19occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 25 NumberOfCodeBlocks, 25 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 20 ConstructedInterpolants, 0 QuantifiedInterpolants, 200 SizeOfPredicates, 0 NumberOfNonLiveVariables, 37 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...