./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-newlib/double_req_bl_1210.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 54858612 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/float-newlib/double_req_bl_1210.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 85e5b86abce931d95696fba33e25199d528f9f0e ..................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/float-newlib/double_req_bl_1210.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 85e5b86abce931d95696fba33e25199d528f9f0e ........................................................................................................................................................................................................................................................................................................................................................................................................................... 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 0.2.0-5485861 [2020-10-25 21:53:40,903 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-25 21:53:40,907 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-25 21:53:40,957 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-25 21:53:40,958 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-25 21:53:40,959 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-25 21:53:40,961 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-25 21:53:40,964 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-25 21:53:40,966 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-25 21:53:40,968 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-25 21:53:40,969 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-25 21:53:40,971 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-25 21:53:40,971 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-25 21:53:40,973 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-25 21:53:40,974 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-25 21:53:40,976 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-25 21:53:40,977 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-25 21:53:40,978 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-25 21:53:40,981 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-25 21:53:40,983 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-25 21:53:40,985 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-25 21:53:40,988 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-25 21:53:40,989 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-25 21:53:40,990 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-25 21:53:40,993 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-25 21:53:40,994 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-25 21:53:40,994 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-25 21:53:40,996 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-25 21:53:40,996 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-25 21:53:40,998 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-25 21:53:40,998 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-25 21:53:40,999 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-25 21:53:41,000 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-25 21:53:41,001 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-25 21:53:41,003 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-25 21:53:41,003 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-25 21:53:41,004 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-25 21:53:41,005 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-25 21:53:41,005 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-25 21:53:41,006 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-25 21:53:41,007 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-25 21:53:41,013 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-25 21:53:41,068 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-25 21:53:41,069 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-25 21:53:41,071 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-25 21:53:41,071 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-25 21:53:41,071 INFO L138 SettingsManager]: * Use SBE=true [2020-10-25 21:53:41,072 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-25 21:53:41,072 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-25 21:53:41,072 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-25 21:53:41,073 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-25 21:53:41,073 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-25 21:53:41,073 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-25 21:53:41,073 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-25 21:53:41,074 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-25 21:53:41,074 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-25 21:53:41,074 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-25 21:53:41,074 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-25 21:53:41,075 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-25 21:53:41,075 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-25 21:53:41,075 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-25 21:53:41,076 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-25 21:53:41,076 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-25 21:53:41,076 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-25 21:53:41,077 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-25 21:53:41,077 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-25 21:53:41,077 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-25 21:53:41,077 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-25 21:53:41,078 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-25 21:53:41,078 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-25 21:53:41,078 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-25 21:53:41,079 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 85e5b86abce931d95696fba33e25199d528f9f0e [2020-10-25 21:53:41,442 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-25 21:53:41,473 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-25 21:53:41,476 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-25 21:53:41,478 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-25 21:53:41,479 INFO L275 PluginConnector]: CDTParser initialized [2020-10-25 21:53:41,480 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_1210.c [2020-10-25 21:53:41,555 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d96e9a585/850440f5ff4744dba25cdae85f5f0223/FLAG7b4c2fa9d [2020-10-25 21:53:42,151 INFO L306 CDTParser]: Found 1 translation units. [2020-10-25 21:53:42,151 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1210.c [2020-10-25 21:53:42,160 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d96e9a585/850440f5ff4744dba25cdae85f5f0223/FLAG7b4c2fa9d [2020-10-25 21:53:42,481 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d96e9a585/850440f5ff4744dba25cdae85f5f0223 [2020-10-25 21:53:42,487 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-25 21:53:42,495 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-25 21:53:42,498 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-25 21:53:42,499 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-25 21:53:42,503 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-25 21:53:42,504 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 09:53:42" (1/1) ... [2020-10-25 21:53:42,513 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c4c6329 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:53:42, skipping insertion in model container [2020-10-25 21:53:42,514 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 09:53:42" (1/1) ... [2020-10-25 21:53:42,523 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-25 21:53:42,565 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-25 21:53:42,841 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-25 21:53:42,852 INFO L203 MainTranslator]: Completed pre-run [2020-10-25 21:53:42,915 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-25 21:53:42,943 INFO L208 MainTranslator]: Completed translation [2020-10-25 21:53:42,943 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:53:42 WrapperNode [2020-10-25 21:53:42,944 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-25 21:53:42,947 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-25 21:53:42,948 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-25 21:53:42,948 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-25 21:53:42,957 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:53:42" (1/1) ... [2020-10-25 21:53:43,000 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:53:42" (1/1) ... [2020-10-25 21:53:43,072 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-25 21:53:43,073 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-25 21:53:43,073 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-25 21:53:43,074 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-25 21:53:43,089 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:53:42" (1/1) ... [2020-10-25 21:53:43,090 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:53:42" (1/1) ... [2020-10-25 21:53:43,113 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:53:42" (1/1) ... [2020-10-25 21:53:43,113 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:53:42" (1/1) ... [2020-10-25 21:53:43,147 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:53:42" (1/1) ... [2020-10-25 21:53:43,161 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:53:42" (1/1) ... [2020-10-25 21:53:43,164 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:53:42" (1/1) ... [2020-10-25 21:53:43,168 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-25 21:53:43,170 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-25 21:53:43,170 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-25 21:53:43,170 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-25 21:53:43,171 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:53:42" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-25 21:53:43,274 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-25 21:53:43,275 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-25 21:53:43,275 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-25 21:53:43,275 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-25 21:53:43,276 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-25 21:53:43,276 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-25 21:53:43,276 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-25 21:53:43,276 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-25 21:53:43,277 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-25 21:53:43,924 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-25 21:53:43,925 INFO L298 CfgBuilder]: Removed 32 assume(true) statements. [2020-10-25 21:53:43,927 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 09:53:43 BoogieIcfgContainer [2020-10-25 21:53:43,927 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-25 21:53:43,929 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-25 21:53:43,929 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-25 21:53:43,933 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-25 21:53:43,933 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.10 09:53:42" (1/3) ... [2020-10-25 21:53:43,934 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@796eefcb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 09:53:43, skipping insertion in model container [2020-10-25 21:53:43,935 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:53:42" (2/3) ... [2020-10-25 21:53:43,935 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@796eefcb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 09:53:43, skipping insertion in model container [2020-10-25 21:53:43,935 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 09:53:43" (3/3) ... [2020-10-25 21:53:43,937 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1210.c [2020-10-25 21:53:43,951 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-25 21:53:43,958 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-25 21:53:43,974 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-25 21:53:44,004 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-25 21:53:44,005 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-25 21:53:44,005 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-25 21:53:44,005 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-25 21:53:44,005 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-25 21:53:44,005 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-25 21:53:44,006 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-25 21:53:44,006 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-25 21:53:44,023 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states. [2020-10-25 21:53:44,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-25 21:53:44,030 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 21:53:44,031 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 21:53:44,031 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 21:53:44,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 21:53:44,039 INFO L82 PathProgramCache]: Analyzing trace with hash -1560975081, now seen corresponding path program 1 times [2020-10-25 21:53:44,050 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 21:53:44,051 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821490118] [2020-10-25 21:53:44,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 21:53:44,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 21:53:44,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 21:53:44,217 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821490118] [2020-10-25 21:53:44,218 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 21:53:44,218 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-25 21:53:44,219 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125992347] [2020-10-25 21:53:44,225 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-25 21:53:44,225 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 21:53:44,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-25 21:53:44,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-25 21:53:44,244 INFO L87 Difference]: Start difference. First operand 45 states. Second operand 2 states. [2020-10-25 21:53:44,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 21:53:44,271 INFO L93 Difference]: Finished difference Result 87 states and 139 transitions. [2020-10-25 21:53:44,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-25 21:53:44,273 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2020-10-25 21:53:44,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 21:53:44,285 INFO L225 Difference]: With dead ends: 87 [2020-10-25 21:53:44,285 INFO L226 Difference]: Without dead ends: 41 [2020-10-25 21:53:44,289 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 [2020-10-25 21:53:44,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-10-25 21:53:44,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2020-10-25 21:53:44,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-25 21:53:44,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 46 transitions. [2020-10-25 21:53:44,342 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 46 transitions. Word has length 13 [2020-10-25 21:53:44,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 21:53:44,342 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 46 transitions. [2020-10-25 21:53:44,342 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-25 21:53:44,343 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 46 transitions. [2020-10-25 21:53:44,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-25 21:53:44,344 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 21:53:44,344 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 21:53:44,345 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-25 21:53:44,345 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 21:53:44,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 21:53:44,346 INFO L82 PathProgramCache]: Analyzing trace with hash -11965906, now seen corresponding path program 1 times [2020-10-25 21:53:44,346 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 21:53:44,347 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559150837] [2020-10-25 21:53:44,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 21:53:44,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 21:53:44,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 21:53:44,459 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559150837] [2020-10-25 21:53:44,460 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 21:53:44,460 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-25 21:53:44,460 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461424271] [2020-10-25 21:53:44,462 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-25 21:53:44,464 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 21:53:44,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-25 21:53:44,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-25 21:53:44,467 INFO L87 Difference]: Start difference. First operand 41 states and 46 transitions. Second operand 3 states. [2020-10-25 21:53:44,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 21:53:44,511 INFO L93 Difference]: Finished difference Result 44 states and 48 transitions. [2020-10-25 21:53:44,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-25 21:53:44,514 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2020-10-25 21:53:44,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 21:53:44,515 INFO L225 Difference]: With dead ends: 44 [2020-10-25 21:53:44,515 INFO L226 Difference]: Without dead ends: 41 [2020-10-25 21:53:44,516 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 [2020-10-25 21:53:44,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-10-25 21:53:44,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2020-10-25 21:53:44,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-25 21:53:44,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2020-10-25 21:53:44,530 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 15 [2020-10-25 21:53:44,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 21:53:44,531 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2020-10-25 21:53:44,532 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-25 21:53:44,532 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2020-10-25 21:53:44,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-25 21:53:44,535 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 21:53:44,535 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 21:53:44,536 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-25 21:53:44,536 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 21:53:44,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 21:53:44,539 INFO L82 PathProgramCache]: Analyzing trace with hash -371067880, now seen corresponding path program 1 times [2020-10-25 21:53:44,539 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 21:53:44,539 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874571950] [2020-10-25 21:53:44,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 21:53:44,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-25 21:53:44,660 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-25 21:53:44,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-25 21:53:44,772 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-25 21:53:44,850 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-25 21:53:44,851 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-25 21:53:44,854 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-25 21:53:44,928 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.10 09:53:44 BoogieIcfgContainer [2020-10-25 21:53:44,929 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-25 21:53:44,930 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-25 21:53:44,931 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-25 21:53:44,932 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-25 21:53:44,933 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 09:53:43" (3/4) ... [2020-10-25 21:53:44,937 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-25 21:53:44,938 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-25 21:53:44,942 INFO L168 Benchmark]: Toolchain (without parser) took 2450.69 ms. Allocated memory was 44.0 MB in the beginning and 67.1 MB in the end (delta: 23.1 MB). Free memory was 21.8 MB in the beginning and 45.8 MB in the end (delta: -24.0 MB). Peak memory consumption was 1.9 MB. Max. memory is 16.1 GB. [2020-10-25 21:53:44,943 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 44.0 MB. Free memory was 31.5 MB in the beginning and 31.5 MB in the end (delta: 31.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-25 21:53:44,945 INFO L168 Benchmark]: CACSL2BoogieTranslator took 445.79 ms. Allocated memory is still 44.0 MB. Free memory was 21.0 MB in the beginning and 20.7 MB in the end (delta: 388.8 kB). Peak memory consumption was 3.4 MB. Max. memory is 16.1 GB. [2020-10-25 21:53:44,953 INFO L168 Benchmark]: Boogie Procedure Inliner took 125.56 ms. Allocated memory was 44.0 MB in the beginning and 54.5 MB in the end (delta: 10.5 MB). Free memory was 20.7 MB in the beginning and 38.8 MB in the end (delta: -18.1 MB). Peak memory consumption was 4.9 MB. Max. memory is 16.1 GB. [2020-10-25 21:53:44,955 INFO L168 Benchmark]: Boogie Preprocessor took 95.69 ms. Allocated memory is still 54.5 MB. Free memory was 38.8 MB in the beginning and 36.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-25 21:53:44,957 INFO L168 Benchmark]: RCFGBuilder took 757.46 ms. Allocated memory is still 54.5 MB. Free memory was 36.7 MB in the beginning and 36.3 MB in the end (delta: 316.7 kB). Peak memory consumption was 18.4 MB. Max. memory is 16.1 GB. [2020-10-25 21:53:44,965 INFO L168 Benchmark]: TraceAbstraction took 1000.29 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 36.0 MB in the beginning and 46.2 MB in the end (delta: -10.1 MB). Peak memory consumption was 18.8 MB. Max. memory is 16.1 GB. [2020-10-25 21:53:44,966 INFO L168 Benchmark]: Witness Printer took 8.54 ms. Allocated memory is still 67.1 MB. Free memory was 46.2 MB in the beginning and 45.8 MB in the end (delta: 392.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-25 21:53:44,981 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 44.0 MB. Free memory was 31.5 MB in the beginning and 31.5 MB in the end (delta: 31.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 445.79 ms. Allocated memory is still 44.0 MB. Free memory was 21.0 MB in the beginning and 20.7 MB in the end (delta: 388.8 kB). Peak memory consumption was 3.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 125.56 ms. Allocated memory was 44.0 MB in the beginning and 54.5 MB in the end (delta: 10.5 MB). Free memory was 20.7 MB in the beginning and 38.8 MB in the end (delta: -18.1 MB). Peak memory consumption was 4.9 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 95.69 ms. Allocated memory is still 54.5 MB. Free memory was 38.8 MB in the beginning and 36.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 757.46 ms. Allocated memory is still 54.5 MB. Free memory was 36.7 MB in the beginning and 36.3 MB in the end (delta: 316.7 kB). Peak memory consumption was 18.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1000.29 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 36.0 MB in the beginning and 46.2 MB in the end (delta: -10.1 MB). Peak memory consumption was 18.8 MB. Max. memory is 16.1 GB. * Witness Printer took 8.54 ms. Allocated memory is still 67.1 MB. Free memory was 46.2 MB in the beginning and 45.8 MB in the end (delta: 392.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 17, overapproximation of someBinaryArithmeticDOUBLEoperation at line 118, overapproximation of bitwiseAnd at line 35. Possible FailurePath: [L19] static const double one_modf = 1.0; VAL [one_modf=1] [L118] double x = 0.0 / 0.0; [L119] double iptr; [L22] __int32_t i0, i1, j0; [L23] __uint32_t i; VAL [one_modf=1] [L25] ieee_double_shape_type ew_u; [L26] ew_u.value = (x) [L27] EXPR ew_u.parts.msw [L27] (i0) = ew_u.parts.msw [L28] EXPR ew_u.parts.lsw [L28] (i1) = ew_u.parts.lsw [L30] j0 = ((i0 >> 20) & 0x7ff) - 0x3ff VAL [one_modf=1] [L31] COND TRUE j0 < 20 VAL [one_modf=1] [L32] COND TRUE j0 < 0 VAL [one_modf=1] [L34] ieee_double_shape_type iw_u; [L35] iw_u.parts.msw = (i0 & 0x80000000) [L36] iw_u.parts.lsw = (0) [L37] EXPR iw_u.value [L37] (*iptr) = iw_u.value [L39] return x; VAL [one_modf=1] [L120] double res = modf_double(x, &iptr); [L123] EXPR \read(iptr) [L17] return x != x; VAL [one_modf=1] [L123] isnan_double(iptr) && !isnan_double(res) [L17] return x != x; VAL [one_modf=1] [L123] isnan_double(iptr) && !isnan_double(res) VAL [one_modf=1] [L123] COND TRUE isnan_double(iptr) && !isnan_double(res) [L3] __assert_fail("0", "double_req_bl_1210.c", 3, "reach_error") VAL [one_modf=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 45 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: 95 SDtfs, 0 SDslu, 40 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=45occurred 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, 0.1s 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 0.2.0-5485861 [2020-10-25 21:53:47,659 INFO L177 SettingsManager]: Resetting all preferences to default values... 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[2020-10-25 21:53:47,746 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-25 21:53:47,752 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-25 21:53:47,753 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-25 21:53:47,755 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-25 21:53:47,761 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-25 21:53:47,761 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-25 21:53:47,762 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-25 21:53:47,762 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-25 21:53:47,763 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-25 21:53:47,766 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-25 21:53:47,768 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-25 21:53:47,769 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-10-25 21:53:47,818 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-25 21:53:47,818 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-25 21:53:47,821 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-25 21:53:47,821 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-25 21:53:47,821 INFO L138 SettingsManager]: * Use SBE=true [2020-10-25 21:53:47,822 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-25 21:53:47,822 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-25 21:53:47,822 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-25 21:53:47,822 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-25 21:53:47,822 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-25 21:53:47,824 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-25 21:53:47,824 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-25 21:53:47,824 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-10-25 21:53:47,824 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-10-25 21:53:47,824 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-25 21:53:47,825 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-25 21:53:47,825 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-25 21:53:47,825 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-25 21:53:47,825 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-25 21:53:47,825 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-25 21:53:47,826 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-25 21:53:47,826 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-25 21:53:47,826 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-25 21:53:47,826 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-25 21:53:47,826 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-25 21:53:47,827 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-25 21:53:47,827 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-10-25 21:53:47,827 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-10-25 21:53:47,827 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-25 21:53:47,827 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-25 21:53:47,827 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-25 21:53:47,828 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 85e5b86abce931d95696fba33e25199d528f9f0e [2020-10-25 21:53:48,282 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-25 21:53:48,311 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-25 21:53:48,317 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-25 21:53:48,319 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-25 21:53:48,320 INFO L275 PluginConnector]: CDTParser initialized [2020-10-25 21:53:48,321 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_1210.c [2020-10-25 21:53:48,422 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0ef2bfa9f/31c8b2633ff84845a998b399da49add9/FLAG924e94e49 [2020-10-25 21:53:49,049 INFO L306 CDTParser]: Found 1 translation units. [2020-10-25 21:53:49,050 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1210.c [2020-10-25 21:53:49,060 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0ef2bfa9f/31c8b2633ff84845a998b399da49add9/FLAG924e94e49 [2020-10-25 21:53:49,438 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0ef2bfa9f/31c8b2633ff84845a998b399da49add9 [2020-10-25 21:53:49,445 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-25 21:53:49,455 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-25 21:53:49,458 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-25 21:53:49,458 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-25 21:53:49,463 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-25 21:53:49,464 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 09:53:49" (1/1) ... [2020-10-25 21:53:49,469 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e60096a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:53:49, skipping insertion in model container [2020-10-25 21:53:49,469 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 09:53:49" (1/1) ... [2020-10-25 21:53:49,479 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-25 21:53:49,519 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-25 21:53:49,809 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-25 21:53:49,830 INFO L203 MainTranslator]: Completed pre-run [2020-10-25 21:53:49,903 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-25 21:53:49,933 INFO L208 MainTranslator]: Completed translation [2020-10-25 21:53:49,934 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:53:49 WrapperNode [2020-10-25 21:53:49,934 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-25 21:53:49,936 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-25 21:53:49,936 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-25 21:53:49,938 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-25 21:53:49,947 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:53:49" (1/1) ... [2020-10-25 21:53:49,977 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:53:49" (1/1) ... [2020-10-25 21:53:50,040 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-25 21:53:50,043 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-25 21:53:50,043 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-25 21:53:50,043 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-25 21:53:50,056 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:53:49" (1/1) ... [2020-10-25 21:53:50,057 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:53:49" (1/1) ... [2020-10-25 21:53:50,076 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:53:49" (1/1) ... [2020-10-25 21:53:50,077 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:53:49" (1/1) ... [2020-10-25 21:53:50,107 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:53:49" (1/1) ... [2020-10-25 21:53:50,124 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:53:49" (1/1) ... [2020-10-25 21:53:50,131 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:53:49" (1/1) ... [2020-10-25 21:53:50,143 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-25 21:53:50,144 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-25 21:53:50,145 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-25 21:53:50,145 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-25 21:53:50,149 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:53:49" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-25 21:53:50,255 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2020-10-25 21:53:50,256 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2020-10-25 21:53:50,256 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-10-25 21:53:50,257 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-25 21:53:50,257 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-10-25 21:53:50,258 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-25 21:53:50,258 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-25 21:53:50,259 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-10-25 21:53:50,259 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-25 21:53:51,679 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-25 21:53:51,680 INFO L298 CfgBuilder]: Removed 32 assume(true) statements. [2020-10-25 21:53:51,682 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 09:53:51 BoogieIcfgContainer [2020-10-25 21:53:51,682 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-25 21:53:51,684 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-25 21:53:51,684 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-25 21:53:51,687 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-25 21:53:51,688 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.10 09:53:49" (1/3) ... [2020-10-25 21:53:51,688 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31d8bcf7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 09:53:51, skipping insertion in model container [2020-10-25 21:53:51,689 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:53:49" (2/3) ... [2020-10-25 21:53:51,689 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31d8bcf7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 09:53:51, skipping insertion in model container [2020-10-25 21:53:51,689 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 09:53:51" (3/3) ... [2020-10-25 21:53:51,691 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1210.c [2020-10-25 21:53:51,707 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-25 21:53:51,714 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-25 21:53:51,728 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-25 21:53:51,758 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-25 21:53:51,758 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-25 21:53:51,758 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-25 21:53:51,758 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-25 21:53:51,759 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-25 21:53:51,759 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-25 21:53:51,759 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-25 21:53:51,759 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-25 21:53:51,776 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states. [2020-10-25 21:53:51,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-25 21:53:51,783 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 21:53:51,783 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 21:53:51,784 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 21:53:51,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 21:53:51,790 INFO L82 PathProgramCache]: Analyzing trace with hash -1560975081, now seen corresponding path program 1 times [2020-10-25 21:53:51,804 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-25 21:53:51,804 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1255312319] [2020-10-25 21:53:51,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-25 21:53:51,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 21:53:51,945 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 1 conjunts are in the unsatisfiable core [2020-10-25 21:53:51,951 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-25 21:53:51,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 21:53:51,974 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-25 21:53:51,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 21:53:51,981 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1255312319] [2020-10-25 21:53:51,982 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-25 21:53:51,982 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-10-25 21:53:51,983 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045327154] [2020-10-25 21:53:51,989 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-25 21:53:51,990 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-25 21:53:52,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-25 21:53:52,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-25 21:53:52,017 INFO L87 Difference]: Start difference. First operand 45 states. Second operand 2 states. [2020-10-25 21:53:52,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 21:53:52,082 INFO L93 Difference]: Finished difference Result 87 states and 139 transitions. [2020-10-25 21:53:52,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-25 21:53:52,084 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2020-10-25 21:53:52,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 21:53:52,110 INFO L225 Difference]: With dead ends: 87 [2020-10-25 21:53:52,113 INFO L226 Difference]: Without dead ends: 41 [2020-10-25 21:53:52,123 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 [2020-10-25 21:53:52,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-10-25 21:53:52,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2020-10-25 21:53:52,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-25 21:53:52,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 46 transitions. [2020-10-25 21:53:52,178 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 46 transitions. Word has length 13 [2020-10-25 21:53:52,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 21:53:52,179 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 46 transitions. [2020-10-25 21:53:52,179 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-25 21:53:52,179 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 46 transitions. [2020-10-25 21:53:52,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-25 21:53:52,180 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 21:53:52,180 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 21:53:52,394 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-10-25 21:53:52,395 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 21:53:52,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 21:53:52,398 INFO L82 PathProgramCache]: Analyzing trace with hash -11965906, now seen corresponding path program 1 times [2020-10-25 21:53:52,399 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-25 21:53:52,399 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [327402980] [2020-10-25 21:53:52,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-25 21:53:52,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 21:53:52,544 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-25 21:53:52,547 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-25 21:53:52,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 21:53:52,744 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-25 21:53:52,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 21:53:52,939 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [327402980] [2020-10-25 21:53:52,939 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-25 21:53:52,940 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2020-10-25 21:53:52,940 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326870453] [2020-10-25 21:53:52,942 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-25 21:53:52,943 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-25 21:53:52,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-25 21:53:52,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-25 21:53:52,945 INFO L87 Difference]: Start difference. First operand 41 states and 46 transitions. Second operand 8 states. [2020-10-25 21:53:53,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 21:53:53,787 INFO L93 Difference]: Finished difference Result 48 states and 53 transitions. [2020-10-25 21:53:53,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-25 21:53:53,789 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 15 [2020-10-25 21:53:53,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 21:53:53,789 INFO L225 Difference]: With dead ends: 48 [2020-10-25 21:53:53,790 INFO L226 Difference]: Without dead ends: 19 [2020-10-25 21:53:53,791 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 [2020-10-25 21:53:53,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-10-25 21:53:53,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2020-10-25 21:53:53,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-10-25 21:53:53,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2020-10-25 21:53:53,797 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 15 [2020-10-25 21:53:53,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 21:53:53,797 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2020-10-25 21:53:53,798 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-25 21:53:53,798 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2020-10-25 21:53:53,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-25 21:53:53,798 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 21:53:53,799 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 21:53:54,013 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-10-25 21:53:54,014 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 21:53:54,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 21:53:54,016 INFO L82 PathProgramCache]: Analyzing trace with hash 1834889353, now seen corresponding path program 1 times [2020-10-25 21:53:54,017 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-25 21:53:54,017 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1577138104] [2020-10-25 21:53:54,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-25 21:53:54,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 21:53:54,550 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-25 21:53:54,552 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-25 21:53:54,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 21:53:54,562 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-25 21:53:54,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 21:53:54,565 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1577138104] [2020-10-25 21:53:54,565 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-25 21:53:54,565 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2020-10-25 21:53:54,565 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257014647] [2020-10-25 21:53:54,568 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-25 21:53:54,568 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-25 21:53:54,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-25 21:53:54,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-25 21:53:54,570 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 3 states. [2020-10-25 21:53:54,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 21:53:54,599 INFO L93 Difference]: Finished difference Result 22 states and 21 transitions. [2020-10-25 21:53:54,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-25 21:53:54,600 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-10-25 21:53:54,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 21:53:54,601 INFO L225 Difference]: With dead ends: 22 [2020-10-25 21:53:54,601 INFO L226 Difference]: Without dead ends: 19 [2020-10-25 21:53:54,601 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-25 21:53:54,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-10-25 21:53:54,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2020-10-25 21:53:54,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-10-25 21:53:54,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 18 transitions. [2020-10-25 21:53:54,607 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 18 transitions. Word has length 17 [2020-10-25 21:53:54,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 21:53:54,607 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 18 transitions. [2020-10-25 21:53:54,607 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-25 21:53:54,608 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 18 transitions. [2020-10-25 21:53:54,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-25 21:53:54,608 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 21:53:54,608 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 21:53:54,819 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-10-25 21:53:54,820 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 21:53:54,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 21:53:54,822 INFO L82 PathProgramCache]: Analyzing trace with hash 1046870301, now seen corresponding path program 1 times [2020-10-25 21:53:54,823 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-25 21:53:54,823 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1160930508] [2020-10-25 21:53:54,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-10-25 21:53:55,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-25 21:53:55,430 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-25 21:53:55,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-25 21:53:55,923 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-25 21:53:56,022 INFO L173 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-10-25 21:53:56,023 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-25 21:53:56,224 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-10-25 21:53:56,268 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.10 09:53:56 BoogieIcfgContainer [2020-10-25 21:53:56,268 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-25 21:53:56,269 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-25 21:53:56,269 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-25 21:53:56,270 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-25 21:53:56,270 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 09:53:51" (3/4) ... [2020-10-25 21:53:56,272 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-10-25 21:53:56,337 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-25 21:53:56,337 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-25 21:53:56,340 INFO L168 Benchmark]: Toolchain (without parser) took 6890.63 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 31.2 MB in the beginning and 39.3 MB in the end (delta: -8.1 MB). Peak memory consumption was 7.9 MB. Max. memory is 16.1 GB. [2020-10-25 21:53:56,341 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 39.8 MB. Free memory was 18.0 MB in the beginning and 17.9 MB in the end (delta: 32.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-25 21:53:56,342 INFO L168 Benchmark]: CACSL2BoogieTranslator took 476.40 ms. Allocated memory is still 54.5 MB. Free memory was 30.7 MB in the beginning and 31.3 MB in the end (delta: -688.4 kB). Peak memory consumption was 5.7 MB. Max. memory is 16.1 GB. [2020-10-25 21:53:56,342 INFO L168 Benchmark]: Boogie Procedure Inliner took 104.01 ms. Allocated memory is still 54.5 MB. Free memory was 31.3 MB in the beginning and 29.1 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-25 21:53:56,343 INFO L168 Benchmark]: Boogie Preprocessor took 100.83 ms. Allocated memory is still 54.5 MB. Free memory was 29.1 MB in the beginning and 27.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-25 21:53:56,344 INFO L168 Benchmark]: RCFGBuilder took 1537.59 ms. Allocated memory is still 54.5 MB. Free memory was 26.8 MB in the beginning and 23.5 MB in the end (delta: 3.3 MB). Peak memory consumption was 6.8 MB. Max. memory is 16.1 GB. [2020-10-25 21:53:56,345 INFO L168 Benchmark]: TraceAbstraction took 4584.94 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 23.1 MB in the beginning and 42.0 MB in the end (delta: -19.0 MB). Peak memory consumption was 12.2 MB. Max. memory is 16.1 GB. [2020-10-25 21:53:56,346 INFO L168 Benchmark]: Witness Printer took 68.26 ms. Allocated memory is still 67.1 MB. Free memory was 42.0 MB in the beginning and 39.3 MB in the end (delta: 2.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-10-25 21:53:56,350 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 39.8 MB. Free memory was 18.0 MB in the beginning and 17.9 MB in the end (delta: 32.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 476.40 ms. Allocated memory is still 54.5 MB. Free memory was 30.7 MB in the beginning and 31.3 MB in the end (delta: -688.4 kB). Peak memory consumption was 5.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 104.01 ms. Allocated memory is still 54.5 MB. Free memory was 31.3 MB in the beginning and 29.1 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 100.83 ms. Allocated memory is still 54.5 MB. Free memory was 29.1 MB in the beginning and 27.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1537.59 ms. Allocated memory is still 54.5 MB. Free memory was 26.8 MB in the beginning and 23.5 MB in the end (delta: 3.3 MB). Peak memory consumption was 6.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4584.94 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 23.1 MB in the beginning and 42.0 MB in the end (delta: -19.0 MB). Peak memory consumption was 12.2 MB. Max. memory is 16.1 GB. * Witness Printer took 68.26 ms. Allocated memory is still 67.1 MB. Free memory was 42.0 MB in the beginning and 39.3 MB in the end (delta: 2.7 MB). Peak memory consumption was 4.2 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: [L19] static const double one_modf = 1.0; VAL [one_modf=1.0] [L118] double x = 0.0 / 0.0; [L119] double iptr; [L22] __int32_t i0, i1, j0; [L23] __uint32_t i; VAL [one_modf=1.0] [L25] ieee_double_shape_type ew_u; [L26] ew_u.value = (x) [L27] EXPR ew_u.parts.msw [L27] (i0) = ew_u.parts.msw [L28] EXPR ew_u.parts.lsw [L28] (i1) = ew_u.parts.lsw [L30] j0 = ((i0 >> 20) & 0x7ff) - 0x3ff VAL [one_modf=1.0] [L31] COND FALSE !(j0 < 20) VAL [one_modf=1.0] [L67] COND TRUE j0 > 51 [L68] __uint32_t high; [L69] *iptr = x * one_modf VAL [one_modf=1.0] [L71] ieee_double_shape_type gh_u; [L72] gh_u.value = (x) [L73] EXPR gh_u.parts.msw [L73] (high) = gh_u.parts.msw [L76] ieee_double_shape_type iw_u; [L77] iw_u.parts.msw = (high & 0x80000000) [L78] iw_u.parts.lsw = (0) [L79] EXPR iw_u.value [L79] (x) = iw_u.value [L81] return x; VAL [one_modf=1.0] [L120] double res = modf_double(x, &iptr); [L123] EXPR \read(iptr) [L17] return x != x; VAL [one_modf=1.0] [L123] isnan_double(iptr) && !isnan_double(res) [L17] return x != x; VAL [one_modf=1.0] [L123] isnan_double(iptr) && !isnan_double(res) VAL [one_modf=1.0] [L123] COND TRUE isnan_double(iptr) && !isnan_double(res) [L3] __assert_fail("0", "double_req_bl_1210.c", 3, "reach_error") VAL [one_modf=1.0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 45 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 4.4s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 82 SDtfs, 50 SDslu, 35 SDs, 0 SdLazy, 18 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 87 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=45occurred 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, 1.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 63 NumberOfCodeBlocks, 63 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 84 ConstructedInterpolants, 5 QuantifiedInterpolants, 2708 SizeOfPredicates, 8 NumberOfNonLiveVariables, 209 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...