./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1032c.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2880296f 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 ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1032c.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 dc0a2ba7c478f7aa42412993fd58e9bd96a2d03f ........................................................................................................................................................................................................................................................................................................ 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 ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1032c.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 dc0a2ba7c478f7aa42412993fd58e9bd96a2d03f ............................................................................................................................................................................................................................................................................................................................................................................ 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 0.2.0-2880296 [2020-12-02 15:30:42,283 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-02 15:30:42,291 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-02 15:30:42,346 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-02 15:30:42,347 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-02 15:30:42,352 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-02 15:30:42,355 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-02 15:30:42,361 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-02 15:30:42,367 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-02 15:30:42,373 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-02 15:30:42,375 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-02 15:30:42,376 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-02 15:30:42,376 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-02 15:30:42,380 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-02 15:30:42,381 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-02 15:30:42,384 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-02 15:30:42,385 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-02 15:30:42,388 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-02 15:30:42,391 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-02 15:30:42,401 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-02 15:30:42,403 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-02 15:30:42,404 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-02 15:30:42,407 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-02 15:30:42,408 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-02 15:30:42,417 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-02 15:30:42,417 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-02 15:30:42,418 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-02 15:30:42,419 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-02 15:30:42,419 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-02 15:30:42,420 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-02 15:30:42,421 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-02 15:30:42,422 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-02 15:30:42,423 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-02 15:30:42,423 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-02 15:30:42,424 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-02 15:30:42,425 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-02 15:30:42,425 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-02 15:30:42,426 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-02 15:30:42,426 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-02 15:30:42,427 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-02 15:30:42,428 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-02 15:30:42,429 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-12-02 15:30:42,457 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-02 15:30:42,457 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-02 15:30:42,458 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-02 15:30:42,459 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-02 15:30:42,459 INFO L138 SettingsManager]: * Use SBE=true [2020-12-02 15:30:42,459 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-02 15:30:42,459 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-02 15:30:42,459 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-02 15:30:42,460 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-02 15:30:42,460 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-02 15:30:42,460 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-02 15:30:42,460 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-02 15:30:42,460 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-02 15:30:42,461 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-02 15:30:42,461 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-02 15:30:42,461 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-02 15:30:42,461 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-02 15:30:42,462 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-02 15:30:42,462 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-02 15:30:42,462 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-02 15:30:42,462 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-02 15:30:42,462 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-02 15:30:42,463 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-02 15:30:42,463 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-02 15:30:42,463 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-02 15:30:42,463 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-02 15:30:42,463 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-02 15:30:42,464 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-02 15:30:42,464 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-02 15:30:42,464 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dc0a2ba7c478f7aa42412993fd58e9bd96a2d03f [2020-12-02 15:30:42,846 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-02 15:30:42,878 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-02 15:30:42,880 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-02 15:30:42,882 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-02 15:30:42,886 INFO L275 PluginConnector]: CDTParser initialized [2020-12-02 15:30:42,887 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1032c.c [2020-12-02 15:30:42,970 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/71153c5c8/dce6f736e7b847dcbcca0d8a70570dfb/FLAG0a2e3a354 [2020-12-02 15:30:43,590 INFO L306 CDTParser]: Found 1 translation units. [2020-12-02 15:30:43,591 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1032c.c [2020-12-02 15:30:43,601 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/71153c5c8/dce6f736e7b847dcbcca0d8a70570dfb/FLAG0a2e3a354 [2020-12-02 15:30:43,890 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/71153c5c8/dce6f736e7b847dcbcca0d8a70570dfb [2020-12-02 15:30:43,893 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-02 15:30:43,895 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-02 15:30:43,897 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-02 15:30:43,897 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-02 15:30:43,903 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-02 15:30:43,904 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:30:43" (1/1) ... [2020-12-02 15:30:43,913 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@675b2773 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:30:43, skipping insertion in model container [2020-12-02 15:30:43,913 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:30:43" (1/1) ... [2020-12-02 15:30:43,922 INFO L146 MainTranslator]: Starting translation in SV-COMP mode [2020-12-02 15:30:43,942 INFO L179 MainTranslator]: Built tables and reachable declarations [2020-12-02 15:30:44,125 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1032c.c[2355,2368] [2020-12-02 15:30:44,129 INFO L211 PostProcessor]: Analyzing one entry point: main [2020-12-02 15:30:44,138 INFO L212 MainTranslator]: Completed pre-run [2020-12-02 15:30:44,173 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1032c.c[2355,2368] [2020-12-02 15:30:44,174 INFO L211 PostProcessor]: Analyzing one entry point: main [2020-12-02 15:30:44,193 INFO L217 MainTranslator]: Completed translation [2020-12-02 15:30:44,194 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:30:44 WrapperNode [2020-12-02 15:30:44,194 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-02 15:30:44,196 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-02 15:30:44,196 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-02 15:30:44,196 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-02 15:30:44,204 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:30:44" (1/1) ... [2020-12-02 15:30:44,213 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:30:44" (1/1) ... [2020-12-02 15:30:44,240 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-02 15:30:44,241 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-02 15:30:44,241 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-02 15:30:44,241 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-02 15:30:44,251 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:30:44" (1/1) ... [2020-12-02 15:30:44,251 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:30:44" (1/1) ... [2020-12-02 15:30:44,255 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:30:44" (1/1) ... [2020-12-02 15:30:44,256 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:30:44" (1/1) ... [2020-12-02 15:30:44,265 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:30:44" (1/1) ... [2020-12-02 15:30:44,270 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:30:44" (1/1) ... [2020-12-02 15:30:44,272 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:30:44" (1/1) ... [2020-12-02 15:30:44,276 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-02 15:30:44,277 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-02 15:30:44,277 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-02 15:30:44,277 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-02 15:30:44,278 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:30:44" (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 [2020-12-02 15:30:44,379 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-02 15:30:44,379 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-02 15:30:44,380 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-12-02 15:30:44,380 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-02 15:30:44,380 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-12-02 15:30:44,380 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-02 15:30:44,380 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-02 15:30:44,380 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-02 15:30:44,381 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-02 15:30:44,912 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-02 15:30:44,915 INFO L298 CfgBuilder]: Removed 14 assume(true) statements. [2020-12-02 15:30:44,929 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:30:44 BoogieIcfgContainer [2020-12-02 15:30:44,929 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-02 15:30:44,931 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-02 15:30:44,931 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-02 15:30:44,938 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-02 15:30:44,939 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 03:30:43" (1/3) ... [2020-12-02 15:30:44,939 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78399ef0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:30:44, skipping insertion in model container [2020-12-02 15:30:44,940 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:30:44" (2/3) ... [2020-12-02 15:30:44,940 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78399ef0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:30:44, skipping insertion in model container [2020-12-02 15:30:44,940 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:30:44" (3/3) ... [2020-12-02 15:30:44,945 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1032c.c [2020-12-02 15:30:44,969 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-02 15:30:44,977 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-02 15:30:44,991 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-02 15:30:45,038 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-02 15:30:45,038 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-02 15:30:45,038 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-02 15:30:45,039 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-02 15:30:45,039 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-02 15:30:45,039 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-02 15:30:45,039 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-02 15:30:45,040 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-02 15:30:45,058 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2020-12-02 15:30:45,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-02 15:30:45,067 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 15:30:45,068 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 15:30:45,068 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 15:30:45,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 15:30:45,076 INFO L82 PathProgramCache]: Analyzing trace with hash -1058195810, now seen corresponding path program 1 times [2020-12-02 15:30:45,086 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 15:30:45,087 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911874996] [2020-12-02 15:30:45,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 15:30:45,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 15:30:45,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 15:30:45,289 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911874996] [2020-12-02 15:30:45,290 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 15:30:45,291 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-02 15:30:45,292 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856999066] [2020-12-02 15:30:45,297 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-02 15:30:45,298 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 15:30:45,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-02 15:30:45,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-02 15:30:45,317 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 2 states. [2020-12-02 15:30:45,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 15:30:45,340 INFO L93 Difference]: Finished difference Result 56 states and 84 transitions. [2020-12-02 15:30:45,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-02 15:30:45,342 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2020-12-02 15:30:45,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 15:30:45,365 INFO L225 Difference]: With dead ends: 56 [2020-12-02 15:30:45,365 INFO L226 Difference]: Without dead ends: 26 [2020-12-02 15:30:45,370 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 [2020-12-02 15:30:45,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-12-02 15:30:45,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-12-02 15:30:45,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-12-02 15:30:45,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 33 transitions. [2020-12-02 15:30:45,403 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 33 transitions. Word has length 13 [2020-12-02 15:30:45,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 15:30:45,404 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 33 transitions. [2020-12-02 15:30:45,404 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-02 15:30:45,404 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 33 transitions. [2020-12-02 15:30:45,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-02 15:30:45,412 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 15:30:45,412 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 15:30:45,412 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-02 15:30:45,413 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 15:30:45,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 15:30:45,413 INFO L82 PathProgramCache]: Analyzing trace with hash 1055488069, now seen corresponding path program 1 times [2020-12-02 15:30:45,414 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 15:30:45,414 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866241809] [2020-12-02 15:30:45,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 15:30:45,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-02 15:30:45,517 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-02 15:30:45,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-02 15:30:45,629 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-02 15:30:45,690 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-02 15:30:45,691 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-02 15:30:45,692 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-02 15:30:45,744 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 03:30:45 BoogieIcfgContainer [2020-12-02 15:30:45,744 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-02 15:30:45,745 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-02 15:30:45,745 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-02 15:30:45,745 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-02 15:30:45,746 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:30:44" (3/4) ... [2020-12-02 15:30:45,751 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-02 15:30:45,751 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-02 15:30:45,757 INFO L168 Benchmark]: Toolchain (without parser) took 1857.37 ms. Allocated memory was 48.2 MB in the beginning and 58.7 MB in the end (delta: 10.5 MB). Free memory was 24.2 MB in the beginning and 28.7 MB in the end (delta: -4.6 MB). Peak memory consumption was 8.7 MB. Max. memory is 16.1 GB. [2020-12-02 15:30:45,758 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 48.2 MB. Free memory was 28.0 MB in the beginning and 28.0 MB in the end (delta: 63.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-02 15:30:45,760 INFO L168 Benchmark]: CACSL2BoogieTranslator took 297.56 ms. Allocated memory was 48.2 MB in the beginning and 58.7 MB in the end (delta: 10.5 MB). Free memory was 24.0 MB in the beginning and 34.7 MB in the end (delta: -10.7 MB). Peak memory consumption was 5.5 MB. Max. memory is 16.1 GB. [2020-12-02 15:30:45,761 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.81 ms. Allocated memory is still 58.7 MB. Free memory was 34.7 MB in the beginning and 32.8 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-02 15:30:45,762 INFO L168 Benchmark]: Boogie Preprocessor took 34.86 ms. Allocated memory is still 58.7 MB. Free memory was 32.8 MB in the beginning and 31.3 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-02 15:30:45,765 INFO L168 Benchmark]: RCFGBuilder took 652.67 ms. Allocated memory is still 58.7 MB. Free memory was 31.1 MB in the beginning and 41.0 MB in the end (delta: -9.9 MB). Peak memory consumption was 6.8 MB. Max. memory is 16.1 GB. [2020-12-02 15:30:45,767 INFO L168 Benchmark]: TraceAbstraction took 813.09 ms. Allocated memory is still 58.7 MB. Free memory was 40.7 MB in the beginning and 29.3 MB in the end (delta: 11.4 MB). Peak memory consumption was 11.1 MB. Max. memory is 16.1 GB. [2020-12-02 15:30:45,769 INFO L168 Benchmark]: Witness Printer took 5.87 ms. Allocated memory is still 58.7 MB. Free memory was 29.3 MB in the beginning and 28.7 MB in the end (delta: 579.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-02 15:30:45,785 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 48.2 MB. Free memory was 28.0 MB in the beginning and 28.0 MB in the end (delta: 63.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 297.56 ms. Allocated memory was 48.2 MB in the beginning and 58.7 MB in the end (delta: 10.5 MB). Free memory was 24.0 MB in the beginning and 34.7 MB in the end (delta: -10.7 MB). Peak memory consumption was 5.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 44.81 ms. Allocated memory is still 58.7 MB. Free memory was 34.7 MB in the beginning and 32.8 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 34.86 ms. Allocated memory is still 58.7 MB. Free memory was 32.8 MB in the beginning and 31.3 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 652.67 ms. Allocated memory is still 58.7 MB. Free memory was 31.1 MB in the beginning and 41.0 MB in the end (delta: -9.9 MB). Peak memory consumption was 6.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 813.09 ms. Allocated memory is still 58.7 MB. Free memory was 40.7 MB in the beginning and 29.3 MB in the end (delta: 11.4 MB). Peak memory consumption was 11.1 MB. Max. memory is 16.1 GB. * Witness Printer took 5.87 ms. Allocated memory is still 58.7 MB. Free memory was 29.3 MB in the beginning and 28.7 MB in the end (delta: 579.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 93]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of shiftRight at line 33, overapproximation of bitwiseOr at line 75, overapproximation of bitwiseAnd at line 74, overapproximation of someBinaryArithmeticDOUBLE_SMToperation at line 88. Possible FailurePath: [L88] double x = 1.0 / 0.0; [L17] __int32_t msw, exponent_less_1023; [L18] __uint32_t lsw; [L20] ieee_double_shape_type ew_u; [L21] ew_u.value = (x) [L22] EXPR ew_u.parts.msw [L22] (msw) = ew_u.parts.msw [L23] EXPR ew_u.parts.lsw [L23] (lsw) = ew_u.parts.lsw [L25] exponent_less_1023 = ((msw & 0x7ff00000) >> 20) - 1023 [L26] COND TRUE exponent_less_1023 < 20 [L27] COND FALSE !(exponent_less_1023 < 0) [L33] __uint32_t exponent_mask = 0x000fffff >> exponent_less_1023; [L34] COND TRUE (msw & exponent_mask) == 0 && lsw == 0 [L35] return x; [L89] double res = round_double(x); [L67] __int32_t hx, lx; [L69] ieee_double_shape_type ew_u; [L70] ew_u.value = (x) [L71] EXPR ew_u.parts.msw [L71] (hx) = ew_u.parts.msw [L72] EXPR ew_u.parts.lsw [L72] (lx) = ew_u.parts.lsw [L74] hx &= 0x7fffffff [L75] hx |= (__uint32_t)(lx | (-lx)) >> 31 [L76] hx = 0x7ff00000 - hx [L77] return 1 - (int)((__uint32_t)(hx | (-hx)) >> 31); [L92] COND TRUE !isinf_double(res) [L93] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 29 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.6s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 36 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=29occurred 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, 28 NumberOfCodeBlocks, 28 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 12 ConstructedInterpolants, 0 QuantifiedInterpolants, 144 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-2880296 [2020-12-02 15:30:48,116 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-02 15:30:48,118 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-02 15:30:48,160 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-02 15:30:48,161 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-02 15:30:48,167 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-02 15:30:48,169 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-02 15:30:48,175 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-02 15:30:48,179 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-02 15:30:48,186 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-02 15:30:48,188 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-02 15:30:48,193 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-02 15:30:48,194 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-02 15:30:48,195 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-02 15:30:48,197 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-02 15:30:48,199 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-02 15:30:48,200 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-02 15:30:48,204 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-02 15:30:48,208 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-02 15:30:48,214 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-02 15:30:48,216 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-02 15:30:48,220 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-02 15:30:48,222 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-02 15:30:48,223 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-02 15:30:48,229 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-02 15:30:48,229 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-02 15:30:48,230 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-02 15:30:48,233 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-02 15:30:48,234 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-02 15:30:48,235 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-02 15:30:48,235 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-02 15:30:48,237 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-02 15:30:48,239 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-02 15:30:48,240 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-02 15:30:48,241 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-02 15:30:48,241 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-02 15:30:48,242 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-02 15:30:48,242 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-02 15:30:48,243 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-02 15:30:48,245 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-02 15:30:48,246 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-02 15:30:48,247 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-12-02 15:30:48,301 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-02 15:30:48,302 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-02 15:30:48,304 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-02 15:30:48,304 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-02 15:30:48,304 INFO L138 SettingsManager]: * Use SBE=true [2020-12-02 15:30:48,305 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-02 15:30:48,305 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-02 15:30:48,305 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-02 15:30:48,305 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-02 15:30:48,306 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-02 15:30:48,306 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-02 15:30:48,306 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-02 15:30:48,307 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-12-02 15:30:48,307 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-12-02 15:30:48,307 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-02 15:30:48,307 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-02 15:30:48,308 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-02 15:30:48,308 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-02 15:30:48,308 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-02 15:30:48,309 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-02 15:30:48,309 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-02 15:30:48,309 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-02 15:30:48,309 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-02 15:30:48,310 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-02 15:30:48,310 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-02 15:30:48,310 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-02 15:30:48,311 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-12-02 15:30:48,311 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-12-02 15:30:48,311 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-02 15:30:48,311 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-02 15:30:48,312 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-02 15:30:48,312 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dc0a2ba7c478f7aa42412993fd58e9bd96a2d03f [2020-12-02 15:30:48,672 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-02 15:30:48,716 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-02 15:30:48,722 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-02 15:30:48,724 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-02 15:30:48,725 INFO L275 PluginConnector]: CDTParser initialized [2020-12-02 15:30:48,726 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1032c.c [2020-12-02 15:30:48,796 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e8ba61726/e2f271e1dc62478487e10a1ea8f9add0/FLAGe752bee28 [2020-12-02 15:30:49,365 INFO L306 CDTParser]: Found 1 translation units. [2020-12-02 15:30:49,366 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1032c.c [2020-12-02 15:30:49,379 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e8ba61726/e2f271e1dc62478487e10a1ea8f9add0/FLAGe752bee28 [2020-12-02 15:30:49,731 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e8ba61726/e2f271e1dc62478487e10a1ea8f9add0 [2020-12-02 15:30:49,734 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-02 15:30:49,736 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-02 15:30:49,738 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-02 15:30:49,738 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-02 15:30:49,746 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-02 15:30:49,747 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:30:49" (1/1) ... [2020-12-02 15:30:49,752 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ea6da36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:30:49, skipping insertion in model container [2020-12-02 15:30:49,752 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:30:49" (1/1) ... [2020-12-02 15:30:49,764 INFO L146 MainTranslator]: Starting translation in SV-COMP mode [2020-12-02 15:30:49,782 INFO L179 MainTranslator]: Built tables and reachable declarations [2020-12-02 15:30:49,974 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1032c.c[2355,2368] [2020-12-02 15:30:49,977 INFO L211 PostProcessor]: Analyzing one entry point: main [2020-12-02 15:30:49,993 INFO L212 MainTranslator]: Completed pre-run [2020-12-02 15:30:50,030 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1032c.c[2355,2368] [2020-12-02 15:30:50,032 INFO L211 PostProcessor]: Analyzing one entry point: main [2020-12-02 15:30:50,060 INFO L217 MainTranslator]: Completed translation [2020-12-02 15:30:50,062 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:30:50 WrapperNode [2020-12-02 15:30:50,062 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-02 15:30:50,065 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-02 15:30:50,066 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-02 15:30:50,066 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-02 15:30:50,076 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:30:50" (1/1) ... [2020-12-02 15:30:50,109 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:30:50" (1/1) ... [2020-12-02 15:30:50,161 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-02 15:30:50,161 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-02 15:30:50,162 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-02 15:30:50,162 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-02 15:30:50,172 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:30:50" (1/1) ... [2020-12-02 15:30:50,172 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:30:50" (1/1) ... [2020-12-02 15:30:50,194 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:30:50" (1/1) ... [2020-12-02 15:30:50,195 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:30:50" (1/1) ... [2020-12-02 15:30:50,206 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:30:50" (1/1) ... [2020-12-02 15:30:50,211 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:30:50" (1/1) ... [2020-12-02 15:30:50,214 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:30:50" (1/1) ... [2020-12-02 15:30:50,219 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-02 15:30:50,220 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-02 15:30:50,220 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-02 15:30:50,220 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-02 15:30:50,221 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:30:50" (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 [2020-12-02 15:30:50,318 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.float_to_bitvec_DOUBLE [2020-12-02 15:30:50,318 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2020-12-02 15:30:50,318 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2020-12-02 15:30:50,318 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-12-02 15:30:50,319 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-02 15:30:50,319 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-12-02 15:30:50,319 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-02 15:30:50,319 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-02 15:30:50,319 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-12-02 15:30:50,319 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-02 15:30:50,870 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-02 15:30:50,870 INFO L298 CfgBuilder]: Removed 14 assume(true) statements. [2020-12-02 15:30:50,872 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:30:50 BoogieIcfgContainer [2020-12-02 15:30:50,873 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-02 15:30:50,875 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-02 15:30:50,875 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-02 15:30:50,879 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-02 15:30:50,879 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 03:30:49" (1/3) ... [2020-12-02 15:30:50,880 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d59472d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:30:50, skipping insertion in model container [2020-12-02 15:30:50,881 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:30:50" (2/3) ... [2020-12-02 15:30:50,881 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d59472d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:30:50, skipping insertion in model container [2020-12-02 15:30:50,881 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:30:50" (3/3) ... [2020-12-02 15:30:50,883 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1032c.c [2020-12-02 15:30:50,900 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-02 15:30:50,906 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-02 15:30:50,920 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-02 15:30:50,949 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-02 15:30:50,950 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-02 15:30:50,950 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-02 15:30:50,950 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-02 15:30:50,950 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-02 15:30:50,951 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-02 15:30:50,951 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-02 15:30:50,951 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-02 15:30:50,969 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2020-12-02 15:30:50,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-02 15:30:50,979 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 15:30:50,980 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 15:30:50,982 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 15:30:50,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 15:30:50,990 INFO L82 PathProgramCache]: Analyzing trace with hash -1058195810, now seen corresponding path program 1 times [2020-12-02 15:30:51,003 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-02 15:30:51,003 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [371160343] [2020-12-02 15:30:51,003 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 [2020-12-02 15:30:51,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 15:30:51,852 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 1 conjunts are in the unsatisfiable core [2020-12-02 15:30:51,857 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-02 15:30:51,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 15:30:51,887 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-02 15:30:51,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 15:30:51,903 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [371160343] [2020-12-02 15:30:51,904 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-02 15:30:51,904 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-12-02 15:30:51,905 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762845964] [2020-12-02 15:30:51,910 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-02 15:30:51,910 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-02 15:30:51,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-02 15:30:51,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-02 15:30:51,927 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 2 states. [2020-12-02 15:30:51,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 15:30:51,946 INFO L93 Difference]: Finished difference Result 56 states and 84 transitions. [2020-12-02 15:30:51,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-02 15:30:51,948 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2020-12-02 15:30:51,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 15:30:51,958 INFO L225 Difference]: With dead ends: 56 [2020-12-02 15:30:51,959 INFO L226 Difference]: Without dead ends: 26 [2020-12-02 15:30:51,962 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 [2020-12-02 15:30:51,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-12-02 15:30:51,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-12-02 15:30:51,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-12-02 15:30:51,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 33 transitions. [2020-12-02 15:30:52,001 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 33 transitions. Word has length 13 [2020-12-02 15:30:52,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 15:30:52,001 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 33 transitions. [2020-12-02 15:30:52,002 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-02 15:30:52,002 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 33 transitions. [2020-12-02 15:30:52,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-02 15:30:52,003 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 15:30:52,003 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 15:30:52,216 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-12-02 15:30:52,217 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 15:30:52,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 15:30:52,218 INFO L82 PathProgramCache]: Analyzing trace with hash 1055488069, now seen corresponding path program 1 times [2020-12-02 15:30:52,219 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-02 15:30:52,220 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1769139588] [2020-12-02 15:30:52,223 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 [2020-12-02 15:30:53,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 15:30:53,470 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-02 15:30:53,475 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-02 15:30:59,254 WARN L197 SmtUtils]: Spent 2.14 s on a formula simplification that was a NOOP. DAG size: 25 [2020-12-02 15:31:01,398 WARN L838 $PredicateComparison]: unable to prove that (exists ((ULTIMATE.start_round_double_~x (_ BitVec 64)) (|v_ULTIMATE.start_main_#t~nondet18_6| (_ BitVec 64)) (|v_ULTIMATE.start_main_#t~nondet19_6| (_ BitVec 64))) (let ((.cse0 (fp ((_ extract 63 63) |v_ULTIMATE.start_main_#t~nondet18_6|) ((_ extract 62 52) |v_ULTIMATE.start_main_#t~nondet18_6|) ((_ extract 51 0) |v_ULTIMATE.start_main_#t~nondet18_6|))) (.cse1 (fp ((_ extract 63 63) |v_ULTIMATE.start_main_#t~nondet19_6|) ((_ extract 62 52) |v_ULTIMATE.start_main_#t~nondet19_6|) ((_ extract 51 0) |v_ULTIMATE.start_main_#t~nondet19_6|)))) (and (= ((_ extract 63 32) ULTIMATE.start_round_double_~x) c_ULTIMATE.start_round_double_~msw~0) (= (fp.div roundNearestTiesToEven .cse0 .cse1) (fp ((_ extract 63 63) ULTIMATE.start_round_double_~x) ((_ extract 62 52) ULTIMATE.start_round_double_~x) ((_ extract 51 0) ULTIMATE.start_round_double_~x))) (= .cse0 ((_ to_fp 11 53) roundNearestTiesToEven 1.0)) (= (_ +zero 11 53) .cse1)))) is different from false [2020-12-02 15:31:12,685 WARN L197 SmtUtils]: Spent 2.13 s on a formula simplification that was a NOOP. DAG size: 34 [2020-12-02 15:31:12,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 15:31:12,712 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-02 15:31:24,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 15:31:24,685 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1769139588] [2020-12-02 15:31:24,685 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-02 15:31:24,685 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2020-12-02 15:31:24,685 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254551660] [2020-12-02 15:31:24,687 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-02 15:31:24,688 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-02 15:31:24,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-02 15:31:24,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=38, Unknown=5, NotChecked=12, Total=72 [2020-12-02 15:31:24,690 INFO L87 Difference]: Start difference. First operand 26 states and 33 transitions. Second operand 9 states. [2020-12-02 15:31:39,325 WARN L197 SmtUtils]: Spent 5.09 s on a formula simplification that was a NOOP. DAG size: 28 [2020-12-02 15:31:43,002 WARN L838 $PredicateComparison]: unable to prove that (and (exists ((ULTIMATE.start_round_double_~x (_ BitVec 64)) (|v_ULTIMATE.start_main_#t~nondet18_6| (_ BitVec 64)) (|v_ULTIMATE.start_main_#t~nondet19_6| (_ BitVec 64))) (let ((.cse0 (fp ((_ extract 63 63) |v_ULTIMATE.start_main_#t~nondet18_6|) ((_ extract 62 52) |v_ULTIMATE.start_main_#t~nondet18_6|) ((_ extract 51 0) |v_ULTIMATE.start_main_#t~nondet18_6|))) (.cse1 (fp ((_ extract 63 63) |v_ULTIMATE.start_main_#t~nondet19_6|) ((_ extract 62 52) |v_ULTIMATE.start_main_#t~nondet19_6|) ((_ extract 51 0) |v_ULTIMATE.start_main_#t~nondet19_6|)))) (and (= ((_ extract 63 32) ULTIMATE.start_round_double_~x) c_ULTIMATE.start_round_double_~msw~0) (= (fp.div roundNearestTiesToEven .cse0 .cse1) (fp ((_ extract 63 63) ULTIMATE.start_round_double_~x) ((_ extract 62 52) ULTIMATE.start_round_double_~x) ((_ extract 51 0) ULTIMATE.start_round_double_~x))) (= .cse0 ((_ to_fp 11 53) roundNearestTiesToEven 1.0)) (= (_ +zero 11 53) .cse1)))) (= roundNearestTiesToEven c_~CRM) (exists ((|v_ULTIMATE.start_main_#t~nondet18_6| (_ BitVec 64)) (|v_ULTIMATE.start_main_#t~nondet19_6| (_ BitVec 64))) (let ((.cse2 (fp ((_ extract 63 63) |v_ULTIMATE.start_main_#t~nondet18_6|) ((_ extract 62 52) |v_ULTIMATE.start_main_#t~nondet18_6|) ((_ extract 51 0) |v_ULTIMATE.start_main_#t~nondet18_6|))) (.cse3 (fp ((_ extract 63 63) |v_ULTIMATE.start_main_#t~nondet19_6|) ((_ extract 62 52) |v_ULTIMATE.start_main_#t~nondet19_6|) ((_ extract 51 0) |v_ULTIMATE.start_main_#t~nondet19_6|)))) (and (= (fp.div roundNearestTiesToEven .cse2 .cse3) (fp ((_ extract 63 63) c_ULTIMATE.start_round_double_~x) ((_ extract 62 52) c_ULTIMATE.start_round_double_~x) ((_ extract 51 0) c_ULTIMATE.start_round_double_~x))) (= .cse2 ((_ to_fp 11 53) roundNearestTiesToEven 1.0)) (= (_ +zero 11 53) .cse3)))) (not (bvslt (bvadd (bvashr (bvand (_ bv2146435072 32) c_ULTIMATE.start_round_double_~msw~0) (_ bv20 32)) (_ bv4294966273 32)) (_ bv20 32)))) is different from false [2020-12-02 15:31:45,135 WARN L838 $PredicateComparison]: unable to prove that (and (exists ((ULTIMATE.start_round_double_~x (_ BitVec 64)) (|v_ULTIMATE.start_main_#t~nondet18_6| (_ BitVec 64)) (|v_ULTIMATE.start_main_#t~nondet19_6| (_ BitVec 64))) (let ((.cse0 (fp ((_ extract 63 63) |v_ULTIMATE.start_main_#t~nondet18_6|) ((_ extract 62 52) |v_ULTIMATE.start_main_#t~nondet18_6|) ((_ extract 51 0) |v_ULTIMATE.start_main_#t~nondet18_6|))) (.cse1 (fp ((_ extract 63 63) |v_ULTIMATE.start_main_#t~nondet19_6|) ((_ extract 62 52) |v_ULTIMATE.start_main_#t~nondet19_6|) ((_ extract 51 0) |v_ULTIMATE.start_main_#t~nondet19_6|)))) (and (= ((_ extract 63 32) ULTIMATE.start_round_double_~x) c_ULTIMATE.start_round_double_~msw~0) (= (fp.div roundNearestTiesToEven .cse0 .cse1) (fp ((_ extract 63 63) ULTIMATE.start_round_double_~x) ((_ extract 62 52) ULTIMATE.start_round_double_~x) ((_ extract 51 0) ULTIMATE.start_round_double_~x))) (= .cse0 ((_ to_fp 11 53) roundNearestTiesToEven 1.0)) (= (_ +zero 11 53) .cse1)))) (not (bvslt (bvadd (bvashr (bvand (_ bv2146435072 32) c_ULTIMATE.start_round_double_~msw~0) (_ bv20 32)) (_ bv4294966273 32)) (_ bv20 32)))) is different from false [2020-12-02 15:32:04,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 15:32:04,502 INFO L93 Difference]: Finished difference Result 34 states and 40 transitions. [2020-12-02 15:32:04,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-02 15:32:04,739 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 15 [2020-12-02 15:32:04,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 15:32:04,739 INFO L225 Difference]: With dead ends: 34 [2020-12-02 15:32:04,740 INFO L226 Difference]: Without dead ends: 16 [2020-12-02 15:32:04,741 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 50.3s TimeCoverageRelationStatistics Valid=26, Invalid=51, Unknown=7, NotChecked=48, Total=132 [2020-12-02 15:32:04,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-12-02 15:32:04,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-12-02 15:32:04,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-12-02 15:32:04,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 15 transitions. [2020-12-02 15:32:04,745 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 15 transitions. Word has length 15 [2020-12-02 15:32:04,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 15:32:04,745 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 15 transitions. [2020-12-02 15:32:04,745 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-02 15:32:04,746 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 15 transitions. [2020-12-02 15:32:04,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-02 15:32:04,747 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 15:32:04,747 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 15:32:04,948 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-12-02 15:32:04,949 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 15:32:04,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 15:32:04,951 INFO L82 PathProgramCache]: Analyzing trace with hash 709099857, now seen corresponding path program 1 times [2020-12-02 15:32:04,952 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-02 15:32:04,952 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [727533213] [2020-12-02 15:32:04,952 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 [2020-12-02 15:32:06,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-02 15:32:06,109 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-02 15:32:07,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-02 15:32:07,152 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-02 15:32:07,324 INFO L173 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-12-02 15:32:07,324 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-02 15:32:07,531 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-12-02 15:32:07,568 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 03:32:07 BoogieIcfgContainer [2020-12-02 15:32:07,569 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-02 15:32:07,570 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-02 15:32:07,570 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-02 15:32:07,570 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-02 15:32:07,571 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:30:50" (3/4) ... [2020-12-02 15:32:07,573 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-02 15:32:07,625 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-12-02 15:32:07,625 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-02 15:32:07,627 INFO L168 Benchmark]: Toolchain (without parser) took 77890.04 ms. Allocated memory was 56.6 MB in the beginning and 75.5 MB in the end (delta: 18.9 MB). Free memory was 33.3 MB in the beginning and 53.3 MB in the end (delta: -20.0 MB). Peak memory consumption was 500.7 kB. Max. memory is 16.1 GB. [2020-12-02 15:32:07,627 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 56.6 MB. Free memory was 40.2 MB in the beginning and 40.1 MB in the end (delta: 40.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-02 15:32:07,628 INFO L168 Benchmark]: CACSL2BoogieTranslator took 325.51 ms. Allocated memory is still 56.6 MB. Free memory was 33.0 MB in the beginning and 34.4 MB in the end (delta: -1.4 MB). Peak memory consumption was 9.7 MB. Max. memory is 16.1 GB. [2020-12-02 15:32:07,629 INFO L168 Benchmark]: Boogie Procedure Inliner took 95.39 ms. Allocated memory is still 56.6 MB. Free memory was 34.4 MB in the beginning and 32.6 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-02 15:32:07,630 INFO L168 Benchmark]: Boogie Preprocessor took 57.68 ms. Allocated memory is still 56.6 MB. Free memory was 32.6 MB in the beginning and 30.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-02 15:32:07,631 INFO L168 Benchmark]: RCFGBuilder took 652.69 ms. Allocated memory was 56.6 MB in the beginning and 75.5 MB in the end (delta: 18.9 MB). Free memory was 30.8 MB in the beginning and 44.1 MB in the end (delta: -13.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-12-02 15:32:07,632 INFO L168 Benchmark]: TraceAbstraction took 76694.13 ms. Allocated memory is still 75.5 MB. Free memory was 43.5 MB in the beginning and 55.8 MB in the end (delta: -12.3 MB). Peak memory consumption was 12.1 MB. Max. memory is 16.1 GB. [2020-12-02 15:32:07,633 INFO L168 Benchmark]: Witness Printer took 55.64 ms. Allocated memory is still 75.5 MB. Free memory was 55.8 MB in the beginning and 53.3 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-02 15:32:07,638 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 56.6 MB. Free memory was 40.2 MB in the beginning and 40.1 MB in the end (delta: 40.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 325.51 ms. Allocated memory is still 56.6 MB. Free memory was 33.0 MB in the beginning and 34.4 MB in the end (delta: -1.4 MB). Peak memory consumption was 9.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 95.39 ms. Allocated memory is still 56.6 MB. Free memory was 34.4 MB in the beginning and 32.6 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 57.68 ms. Allocated memory is still 56.6 MB. Free memory was 32.6 MB in the beginning and 30.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 652.69 ms. Allocated memory was 56.6 MB in the beginning and 75.5 MB in the end (delta: 18.9 MB). Free memory was 30.8 MB in the beginning and 44.1 MB in the end (delta: -13.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 76694.13 ms. Allocated memory is still 75.5 MB. Free memory was 43.5 MB in the beginning and 55.8 MB in the end (delta: -12.3 MB). Peak memory consumption was 12.1 MB. Max. memory is 16.1 GB. * Witness Printer took 55.64 ms. Allocated memory is still 75.5 MB. Free memory was 55.8 MB in the beginning and 53.3 MB in the end (delta: 2.4 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: 93]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L88] EXPR 1.0 [L88] EXPR 0.0 [L88] EXPR 1.0 / 0.0 [L88] double x = 1.0 / 0.0; [L17] __int32_t msw, exponent_less_1023; [L18] __uint32_t lsw; [L20] ieee_double_shape_type ew_u; [L21] ew_u.value = (x) [L22] EXPR ew_u.parts.msw [L22] (msw) = ew_u.parts.msw [L23] EXPR ew_u.parts.lsw [L23] (lsw) = ew_u.parts.lsw [L25] exponent_less_1023 = ((msw & 0x7ff00000) >> 20) - 1023 [L26] COND FALSE !(exponent_less_1023 < 20) [L40] COND TRUE exponent_less_1023 > 51 [L41] COND TRUE exponent_less_1023 == 1024 [L42] EXPR x + x [L42] return x + x; [L89] double res = round_double(x); [L67] __int32_t hx, lx; [L69] ieee_double_shape_type ew_u; [L70] ew_u.value = (x) [L71] EXPR ew_u.parts.msw [L71] (hx) = ew_u.parts.msw [L72] EXPR ew_u.parts.lsw [L72] (lx) = ew_u.parts.lsw [L74] hx &= 0x7fffffff [L75] hx |= (__uint32_t)(lx | (-lx)) >> 31 [L76] hx = 0x7ff00000 - hx [L77] return 1 - (int)((__uint32_t)(hx | (-hx)) >> 31); [L92] COND TRUE !isinf_double(res) [L93] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 29 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 76.5s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 40.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 44 SDtfs, 23 SDslu, 19 SDs, 0 SdLazy, 33 SolverSat, 2 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 18.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 55 GetRequests, 44 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 50.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=29occurred 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, 2.9s SatisfiabilityAnalysisTime, 31.3s InterpolantComputationTime, 43 NumberOfCodeBlocks, 43 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 52 ConstructedInterpolants, 4 QuantifiedInterpolants, 3914 SizeOfPredicates, 6 NumberOfNonLiveVariables, 104 ConjunctsInSsa, 10 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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! [MP z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process Received shutdown request...