./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1052c.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_1052c.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 94bd51eb56827c6c266b6ed4f7ea5182fc2e875c ....................................................................................................................................................................................................................................................................................................... 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_1052c.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 94bd51eb56827c6c266b6ed4f7ea5182fc2e875c ......................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 15:32:10,453 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-02 15:32:10,455 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-02 15:32:10,503 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-02 15:32:10,504 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-02 15:32:10,511 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-02 15:32:10,512 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-02 15:32:10,515 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-02 15:32:10,517 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-02 15:32:10,518 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-02 15:32:10,519 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-02 15:32:10,521 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-02 15:32:10,521 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-02 15:32:10,522 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-02 15:32:10,524 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-02 15:32:10,525 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-02 15:32:10,526 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-02 15:32:10,528 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-02 15:32:10,530 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-02 15:32:10,545 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-02 15:32:10,553 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-02 15:32:10,555 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-02 15:32:10,557 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-02 15:32:10,558 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-02 15:32:10,564 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-02 15:32:10,565 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-02 15:32:10,565 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-02 15:32:10,571 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-02 15:32:10,572 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-02 15:32:10,574 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-02 15:32:10,574 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-02 15:32:10,575 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-02 15:32:10,576 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-02 15:32:10,578 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-02 15:32:10,579 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-02 15:32:10,579 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-02 15:32:10,580 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-02 15:32:10,580 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-02 15:32:10,580 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-02 15:32:10,582 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-02 15:32:10,584 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-02 15:32:10,587 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-12-02 15:32:10,638 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-02 15:32:10,638 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-02 15:32:10,641 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-02 15:32:10,641 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-02 15:32:10,642 INFO L138 SettingsManager]: * Use SBE=true [2020-12-02 15:32:10,642 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-02 15:32:10,642 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-02 15:32:10,642 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-02 15:32:10,643 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-02 15:32:10,643 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-02 15:32:10,644 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-02 15:32:10,644 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-02 15:32:10,645 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-02 15:32:10,645 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-02 15:32:10,645 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-02 15:32:10,645 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-02 15:32:10,646 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-02 15:32:10,646 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-02 15:32:10,646 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-02 15:32:10,647 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-02 15:32:10,647 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-02 15:32:10,647 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-02 15:32:10,647 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-02 15:32:10,648 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-02 15:32:10,648 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-02 15:32:10,648 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-02 15:32:10,648 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-02 15:32:10,649 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-02 15:32:10,649 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-02 15:32:10,649 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 94bd51eb56827c6c266b6ed4f7ea5182fc2e875c [2020-12-02 15:32:11,117 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-02 15:32:11,150 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-02 15:32:11,155 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-02 15:32:11,156 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-02 15:32:11,157 INFO L275 PluginConnector]: CDTParser initialized [2020-12-02 15:32:11,159 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1052c.c [2020-12-02 15:32:11,236 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/179141584/b5f9e2728b5b478699889671f9ddee14/FLAGe857c8714 [2020-12-02 15:32:11,912 INFO L306 CDTParser]: Found 1 translation units. [2020-12-02 15:32:11,913 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1052c.c [2020-12-02 15:32:11,922 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/179141584/b5f9e2728b5b478699889671f9ddee14/FLAGe857c8714 [2020-12-02 15:32:12,256 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/179141584/b5f9e2728b5b478699889671f9ddee14 [2020-12-02 15:32:12,261 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-02 15:32:12,264 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-02 15:32:12,268 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-02 15:32:12,268 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-02 15:32:12,273 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-02 15:32:12,274 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:32:12" (1/1) ... [2020-12-02 15:32:12,283 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68ac2330 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:32:12, skipping insertion in model container [2020-12-02 15:32:12,283 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:32:12" (1/1) ... [2020-12-02 15:32:12,292 INFO L146 MainTranslator]: Starting translation in SV-COMP mode [2020-12-02 15:32:12,317 INFO L179 MainTranslator]: Built tables and reachable declarations [2020-12-02 15:32:12,608 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_1052c.c[2271,2284] [2020-12-02 15:32:12,611 INFO L211 PostProcessor]: Analyzing one entry point: main [2020-12-02 15:32:12,620 INFO L212 MainTranslator]: Completed pre-run [2020-12-02 15:32:12,653 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_1052c.c[2271,2284] [2020-12-02 15:32:12,654 INFO L211 PostProcessor]: Analyzing one entry point: main [2020-12-02 15:32:12,671 INFO L217 MainTranslator]: Completed translation [2020-12-02 15:32:12,671 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:32:12 WrapperNode [2020-12-02 15:32:12,671 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-02 15:32:12,673 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-02 15:32:12,673 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-02 15:32:12,673 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-02 15:32:12,681 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:32:12" (1/1) ... [2020-12-02 15:32:12,691 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:32:12" (1/1) ... [2020-12-02 15:32:12,718 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-02 15:32:12,719 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-02 15:32:12,719 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-02 15:32:12,719 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-02 15:32:12,728 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:32:12" (1/1) ... [2020-12-02 15:32:12,729 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:32:12" (1/1) ... [2020-12-02 15:32:12,732 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:32:12" (1/1) ... [2020-12-02 15:32:12,733 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:32:12" (1/1) ... [2020-12-02 15:32:12,742 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:32:12" (1/1) ... [2020-12-02 15:32:12,747 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:32:12" (1/1) ... [2020-12-02 15:32:12,750 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:32:12" (1/1) ... [2020-12-02 15:32:12,753 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-02 15:32:12,754 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-02 15:32:12,754 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-02 15:32:12,754 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-02 15:32:12,755 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:32:12" (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 15:32:12,850 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-02 15:32:12,850 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-02 15:32:12,850 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-12-02 15:32:12,850 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-02 15:32:12,850 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-12-02 15:32:12,851 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-02 15:32:12,851 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-02 15:32:12,851 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-02 15:32:12,851 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-02 15:32:13,264 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-02 15:32:13,264 INFO L298 CfgBuilder]: Removed 14 assume(true) statements. [2020-12-02 15:32:13,266 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:32:13 BoogieIcfgContainer [2020-12-02 15:32:13,266 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-02 15:32:13,267 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-02 15:32:13,268 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-02 15:32:13,274 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-02 15:32:13,275 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 03:32:12" (1/3) ... [2020-12-02 15:32:13,276 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@233c93d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:32:13, skipping insertion in model container [2020-12-02 15:32:13,276 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:32:12" (2/3) ... [2020-12-02 15:32:13,276 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@233c93d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:32:13, skipping insertion in model container [2020-12-02 15:32:13,276 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:32:13" (3/3) ... [2020-12-02 15:32:13,278 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1052c.c [2020-12-02 15:32:13,294 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-02 15:32:13,299 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-02 15:32:13,313 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-02 15:32:13,347 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-02 15:32:13,347 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-02 15:32:13,347 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-02 15:32:13,347 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-02 15:32:13,347 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-02 15:32:13,347 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-02 15:32:13,347 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-02 15:32:13,348 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-02 15:32:13,363 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states. [2020-12-02 15:32:13,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-02 15:32:13,369 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 15:32:13,369 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 15:32:13,370 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 15:32:13,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 15:32:13,376 INFO L82 PathProgramCache]: Analyzing trace with hash -1930029915, now seen corresponding path program 1 times [2020-12-02 15:32:13,387 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 15:32:13,388 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894393841] [2020-12-02 15:32:13,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 15:32:13,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 15:32:13,560 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 15:32:13,561 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894393841] [2020-12-02 15:32:13,562 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 15:32:13,562 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-02 15:32:13,563 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796662497] [2020-12-02 15:32:13,568 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-02 15:32:13,568 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 15:32:13,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-02 15:32:13,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-02 15:32:13,586 INFO L87 Difference]: Start difference. First operand 38 states. Second operand 2 states. [2020-12-02 15:32:13,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 15:32:13,608 INFO L93 Difference]: Finished difference Result 74 states and 118 transitions. [2020-12-02 15:32:13,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-02 15:32:13,610 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2020-12-02 15:32:13,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 15:32:13,621 INFO L225 Difference]: With dead ends: 74 [2020-12-02 15:32:13,621 INFO L226 Difference]: Without dead ends: 35 [2020-12-02 15:32:13,625 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 15:32:13,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-12-02 15:32:13,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-12-02 15:32:13,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-12-02 15:32:13,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 50 transitions. [2020-12-02 15:32:13,665 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 50 transitions. Word has length 11 [2020-12-02 15:32:13,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 15:32:13,666 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 50 transitions. [2020-12-02 15:32:13,666 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-02 15:32:13,666 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 50 transitions. [2020-12-02 15:32:13,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-02 15:32:13,667 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 15:32:13,668 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 15:32:13,668 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-02 15:32:13,668 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 15:32:13,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 15:32:13,669 INFO L82 PathProgramCache]: Analyzing trace with hash -1310108990, now seen corresponding path program 1 times [2020-12-02 15:32:13,669 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 15:32:13,670 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951241850] [2020-12-02 15:32:13,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 15:32:13,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-02 15:32:13,724 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-02 15:32:13,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-02 15:32:13,761 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-02 15:32:13,790 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-02 15:32:13,790 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-02 15:32:13,791 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-02 15:32:13,827 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 03:32:13 BoogieIcfgContainer [2020-12-02 15:32:13,827 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-02 15:32:13,828 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-02 15:32:13,828 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-02 15:32:13,828 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-02 15:32:13,829 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:32:13" (3/4) ... [2020-12-02 15:32:13,833 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-02 15:32:13,833 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-02 15:32:13,836 INFO L168 Benchmark]: Toolchain (without parser) took 1570.91 ms. Allocated memory was 56.6 MB in the beginning and 69.2 MB in the end (delta: 12.6 MB). Free memory was 35.3 MB in the beginning and 34.2 MB in the end (delta: 1.1 MB). Peak memory consumption was 13.8 MB. Max. memory is 16.1 GB. [2020-12-02 15:32:13,837 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 56.6 MB. Free memory was 37.9 MB in the beginning and 37.9 MB in the end (delta: 73.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-02 15:32:13,838 INFO L168 Benchmark]: CACSL2BoogieTranslator took 403.60 ms. Allocated memory is still 56.6 MB. Free memory was 35.1 MB in the beginning and 37.5 MB in the end (delta: -2.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-12-02 15:32:13,838 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.56 ms. Allocated memory is still 56.6 MB. Free memory was 37.3 MB in the beginning and 35.5 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-02 15:32:13,839 INFO L168 Benchmark]: Boogie Preprocessor took 34.44 ms. Allocated memory is still 56.6 MB. Free memory was 35.5 MB in the beginning and 34.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-02 15:32:13,840 INFO L168 Benchmark]: RCFGBuilder took 511.87 ms. Allocated memory is still 56.6 MB. Free memory was 33.8 MB in the beginning and 26.9 MB in the end (delta: 6.8 MB). Peak memory consumption was 14.6 MB. Max. memory is 16.1 GB. [2020-12-02 15:32:13,841 INFO L168 Benchmark]: TraceAbstraction took 559.90 ms. Allocated memory was 56.6 MB in the beginning and 69.2 MB in the end (delta: 12.6 MB). Free memory was 26.6 MB in the beginning and 34.6 MB in the end (delta: -7.9 MB). Peak memory consumption was 2.8 MB. Max. memory is 16.1 GB. [2020-12-02 15:32:13,842 INFO L168 Benchmark]: Witness Printer took 4.90 ms. Allocated memory is still 69.2 MB. Free memory was 34.6 MB in the beginning and 34.2 MB in the end (delta: 380.5 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-02 15:32:13,847 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 56.6 MB. Free memory was 37.9 MB in the beginning and 37.9 MB in the end (delta: 73.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 403.60 ms. Allocated memory is still 56.6 MB. Free memory was 35.1 MB in the beginning and 37.5 MB in the end (delta: -2.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 45.56 ms. Allocated memory is still 56.6 MB. Free memory was 37.3 MB in the beginning and 35.5 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 34.44 ms. Allocated memory is still 56.6 MB. Free memory was 35.5 MB in the beginning and 34.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 511.87 ms. Allocated memory is still 56.6 MB. Free memory was 33.8 MB in the beginning and 26.9 MB in the end (delta: 6.8 MB). Peak memory consumption was 14.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 559.90 ms. Allocated memory was 56.6 MB in the beginning and 69.2 MB in the end (delta: 12.6 MB). Free memory was 26.6 MB in the beginning and 34.6 MB in the end (delta: -7.9 MB). Peak memory consumption was 2.8 MB. Max. memory is 16.1 GB. * Witness Printer took 4.90 ms. Allocated memory is still 69.2 MB. Free memory was 34.6 MB in the beginning and 34.2 MB in the end (delta: 380.5 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 105]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someUnaryDOUBLE_SMToperation at line 100, overapproximation of shiftRight at line 39, overapproximation of bitwiseOr at line 40, overapproximation of bitwiseAnd at line 27, overapproximation of someBinaryDOUBLE_SMTComparisonOperation at line 104. Possible FailurePath: [L16] static const double huge_floor = 1.0e300; VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L100] double x = -0.0; [L19] __int32_t i0, i1, j0; [L20] __uint32_t i, j; VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L22] ieee_double_shape_type ew_u; [L23] ew_u.value = (x) [L24] EXPR ew_u.parts.msw [L24] (i0) = ew_u.parts.msw [L25] EXPR ew_u.parts.lsw [L25] (i1) = ew_u.parts.lsw [L27] j0 = ((i0 >> 20) & 0x7ff) - 0x3ff VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L28] COND TRUE j0 < 20 VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L29] COND FALSE !(j0 < 0) [L39] i = (0x000fffff) >> j0 VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L40] COND TRUE ((i0 & i) | i1) == 0 [L41] return x; VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L101] double res = floor_double(x); [L104] EXPR res == -0.0 && __signbit_double(res) == 1 VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L104] COND TRUE !(res == -0.0 && __signbit_double(res) == 1) [L105] reach_error() VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 38 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.4s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 53 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=38occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 23 NumberOfCodeBlocks, 23 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 100 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-2880296 [2020-12-02 15:32:16,549 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-02 15:32:16,553 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-02 15:32:16,613 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-02 15:32:16,614 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-02 15:32:16,619 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-02 15:32:16,621 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-02 15:32:16,628 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-02 15:32:16,632 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-02 15:32:16,638 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-02 15:32:16,640 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-02 15:32:16,644 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-02 15:32:16,645 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-02 15:32:16,648 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-02 15:32:16,649 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-02 15:32:16,651 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-02 15:32:16,652 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-02 15:32:16,655 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-02 15:32:16,659 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-02 15:32:16,667 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-02 15:32:16,668 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-02 15:32:16,670 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-02 15:32:16,672 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-02 15:32:16,674 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-02 15:32:16,683 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-02 15:32:16,684 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-02 15:32:16,684 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-02 15:32:16,686 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-02 15:32:16,687 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-02 15:32:16,688 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-02 15:32:16,688 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-02 15:32:16,689 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-02 15:32:16,691 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-02 15:32:16,692 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-02 15:32:16,693 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-02 15:32:16,694 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-02 15:32:16,694 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-02 15:32:16,695 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-02 15:32:16,695 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-02 15:32:16,697 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-02 15:32:16,698 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-02 15:32:16,699 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-12-02 15:32:16,758 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-02 15:32:16,759 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-02 15:32:16,762 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-02 15:32:16,762 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-02 15:32:16,763 INFO L138 SettingsManager]: * Use SBE=true [2020-12-02 15:32:16,763 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-02 15:32:16,763 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-02 15:32:16,763 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-02 15:32:16,764 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-02 15:32:16,764 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-02 15:32:16,766 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-02 15:32:16,766 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-02 15:32:16,766 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-12-02 15:32:16,766 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-12-02 15:32:16,767 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-02 15:32:16,767 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-02 15:32:16,767 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-02 15:32:16,768 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-02 15:32:16,768 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-02 15:32:16,768 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-02 15:32:16,769 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-02 15:32:16,769 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-02 15:32:16,769 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-02 15:32:16,770 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-02 15:32:16,770 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-02 15:32:16,770 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-02 15:32:16,770 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-12-02 15:32:16,771 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-12-02 15:32:16,771 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-02 15:32:16,771 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-02 15:32:16,771 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-02 15:32:16,772 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 94bd51eb56827c6c266b6ed4f7ea5182fc2e875c [2020-12-02 15:32:17,187 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-02 15:32:17,217 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-02 15:32:17,221 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-02 15:32:17,223 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-02 15:32:17,225 INFO L275 PluginConnector]: CDTParser initialized [2020-12-02 15:32:17,226 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1052c.c [2020-12-02 15:32:17,313 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f6acba4c1/63939c558b1d489b818e45e9f8645619/FLAG7c69e61c7 [2020-12-02 15:32:17,919 INFO L306 CDTParser]: Found 1 translation units. [2020-12-02 15:32:17,920 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1052c.c [2020-12-02 15:32:17,931 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f6acba4c1/63939c558b1d489b818e45e9f8645619/FLAG7c69e61c7 [2020-12-02 15:32:18,292 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f6acba4c1/63939c558b1d489b818e45e9f8645619 [2020-12-02 15:32:18,294 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-02 15:32:18,296 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-02 15:32:18,298 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-02 15:32:18,298 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-02 15:32:18,305 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-02 15:32:18,306 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:32:18" (1/1) ... [2020-12-02 15:32:18,310 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 03:32:18, skipping insertion in model container [2020-12-02 15:32:18,310 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:32:18" (1/1) ... [2020-12-02 15:32:18,318 INFO L146 MainTranslator]: Starting translation in SV-COMP mode [2020-12-02 15:32:18,346 INFO L179 MainTranslator]: Built tables and reachable declarations [2020-12-02 15:32:18,528 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_1052c.c[2271,2284] [2020-12-02 15:32:18,532 INFO L211 PostProcessor]: Analyzing one entry point: main [2020-12-02 15:32:18,550 INFO L212 MainTranslator]: Completed pre-run [2020-12-02 15:32:18,608 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_1052c.c[2271,2284] [2020-12-02 15:32:18,610 INFO L211 PostProcessor]: Analyzing one entry point: main [2020-12-02 15:32:18,640 INFO L217 MainTranslator]: Completed translation [2020-12-02 15:32:18,641 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:32:18 WrapperNode [2020-12-02 15:32:18,641 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-02 15:32:18,642 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-02 15:32:18,642 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-02 15:32:18,643 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-02 15:32:18,651 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:32:18" (1/1) ... [2020-12-02 15:32:18,665 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:32:18" (1/1) ... [2020-12-02 15:32:18,694 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-02 15:32:18,695 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-02 15:32:18,696 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-02 15:32:18,696 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-02 15:32:18,706 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:32:18" (1/1) ... [2020-12-02 15:32:18,706 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:32:18" (1/1) ... [2020-12-02 15:32:18,712 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:32:18" (1/1) ... [2020-12-02 15:32:18,713 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:32:18" (1/1) ... [2020-12-02 15:32:18,725 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:32:18" (1/1) ... [2020-12-02 15:32:18,731 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:32:18" (1/1) ... [2020-12-02 15:32:18,734 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:32:18" (1/1) ... [2020-12-02 15:32:18,739 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-02 15:32:18,740 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-02 15:32:18,740 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-02 15:32:18,740 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-02 15:32:18,741 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:32:18" (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 15:32:18,861 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.float_to_bitvec_DOUBLE [2020-12-02 15:32:18,862 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2020-12-02 15:32:18,862 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2020-12-02 15:32:18,863 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-12-02 15:32:18,863 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-02 15:32:18,863 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-12-02 15:32:18,863 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-02 15:32:18,864 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-02 15:32:18,864 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-12-02 15:32:18,864 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-02 15:32:20,358 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-02 15:32:20,359 INFO L298 CfgBuilder]: Removed 14 assume(true) statements. [2020-12-02 15:32:20,361 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:32:20 BoogieIcfgContainer [2020-12-02 15:32:20,361 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-02 15:32:20,363 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-02 15:32:20,363 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-02 15:32:20,366 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-02 15:32:20,367 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 03:32:18" (1/3) ... [2020-12-02 15:32:20,367 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3963dcdf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:32:20, skipping insertion in model container [2020-12-02 15:32:20,368 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:32:18" (2/3) ... [2020-12-02 15:32:20,368 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3963dcdf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:32:20, skipping insertion in model container [2020-12-02 15:32:20,368 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:32:20" (3/3) ... [2020-12-02 15:32:20,370 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1052c.c [2020-12-02 15:32:20,385 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-02 15:32:20,388 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-02 15:32:20,405 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-02 15:32:20,439 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-02 15:32:20,440 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-02 15:32:20,440 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-02 15:32:20,440 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-02 15:32:20,440 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-02 15:32:20,440 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-02 15:32:20,441 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-02 15:32:20,441 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-02 15:32:20,456 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states. [2020-12-02 15:32:20,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-02 15:32:20,462 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 15:32:20,463 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 15:32:20,463 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 15:32:20,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 15:32:20,470 INFO L82 PathProgramCache]: Analyzing trace with hash -1930029915, now seen corresponding path program 1 times [2020-12-02 15:32:20,484 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-02 15:32:20,484 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1459184374] [2020-12-02 15:32:20,485 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 15:32:20,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 15:32:20,603 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 1 conjunts are in the unsatisfiable core [2020-12-02 15:32:20,607 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-02 15:32:20,635 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 15:32:20,635 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-02 15:32:20,648 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 15:32:20,649 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1459184374] [2020-12-02 15:32:20,649 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-02 15:32:20,650 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-12-02 15:32:20,651 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856725754] [2020-12-02 15:32:20,656 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-02 15:32:20,656 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-02 15:32:20,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-02 15:32:20,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-02 15:32:20,683 INFO L87 Difference]: Start difference. First operand 38 states. Second operand 2 states. [2020-12-02 15:32:20,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 15:32:20,705 INFO L93 Difference]: Finished difference Result 74 states and 118 transitions. [2020-12-02 15:32:20,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-02 15:32:20,706 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2020-12-02 15:32:20,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 15:32:20,717 INFO L225 Difference]: With dead ends: 74 [2020-12-02 15:32:20,718 INFO L226 Difference]: Without dead ends: 35 [2020-12-02 15:32:20,721 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-02 15:32:20,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-12-02 15:32:20,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-12-02 15:32:20,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-12-02 15:32:20,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 50 transitions. [2020-12-02 15:32:20,760 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 50 transitions. Word has length 11 [2020-12-02 15:32:20,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 15:32:20,761 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 50 transitions. [2020-12-02 15:32:20,761 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-02 15:32:20,761 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 50 transitions. [2020-12-02 15:32:20,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-02 15:32:20,762 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 15:32:20,762 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 15:32:20,976 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-12-02 15:32:20,979 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 15:32:20,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 15:32:20,980 INFO L82 PathProgramCache]: Analyzing trace with hash -1310108990, now seen corresponding path program 1 times [2020-12-02 15:32:20,981 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-02 15:32:20,982 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [562103083] [2020-12-02 15:32:20,982 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 15:32:21,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 15:32:21,096 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-02 15:32:21,098 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-02 15:32:21,344 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 15:32:21,344 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-02 15:32:21,434 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 15:32:21,435 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [562103083] [2020-12-02 15:32:21,435 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-02 15:32:21,435 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2020-12-02 15:32:21,435 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850087137] [2020-12-02 15:32:21,437 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-02 15:32:21,437 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-02 15:32:21,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-02 15:32:21,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-12-02 15:32:21,439 INFO L87 Difference]: Start difference. First operand 35 states and 50 transitions. Second operand 8 states. [2020-12-02 15:32:22,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 15:32:22,097 INFO L93 Difference]: Finished difference Result 59 states and 74 transitions. [2020-12-02 15:32:22,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-02 15:32:22,098 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 12 [2020-12-02 15:32:22,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 15:32:22,099 INFO L225 Difference]: With dead ends: 59 [2020-12-02 15:32:22,100 INFO L226 Difference]: Without dead ends: 34 [2020-12-02 15:32:22,101 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2020-12-02 15:32:22,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-12-02 15:32:22,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 22. [2020-12-02 15:32:22,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-12-02 15:32:22,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2020-12-02 15:32:22,108 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 12 [2020-12-02 15:32:22,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 15:32:22,108 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2020-12-02 15:32:22,108 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-02 15:32:22,109 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2020-12-02 15:32:22,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-02 15:32:22,109 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 15:32:22,110 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 15:32:22,323 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-12-02 15:32:22,324 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 15:32:22,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 15:32:22,326 INFO L82 PathProgramCache]: Analyzing trace with hash -649381144, now seen corresponding path program 1 times [2020-12-02 15:32:22,328 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-02 15:32:22,328 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1902278947] [2020-12-02 15:32:22,328 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 15:32:22,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 15:32:22,486 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-02 15:32:22,488 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-02 15:32:23,246 WARN L197 SmtUtils]: Spent 457.00 ms on a formula simplification that was a NOOP. DAG size: 39 [2020-12-02 15:32:23,261 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 15:32:23,262 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-02 15:32:25,694 WARN L197 SmtUtils]: Spent 655.00 ms on a formula simplification that was a NOOP. DAG size: 30 [2020-12-02 15:32:28,408 WARN L197 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 40 [2020-12-02 15:32:28,410 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 15:32:28,411 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1902278947] [2020-12-02 15:32:28,411 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-02 15:32:28,411 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2020-12-02 15:32:28,411 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469462033] [2020-12-02 15:32:28,412 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-02 15:32:28,413 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-02 15:32:28,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-02 15:32:28,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-12-02 15:32:28,419 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand 8 states. [2020-12-02 15:32:31,686 WARN L197 SmtUtils]: Spent 2.82 s on a formula simplification that was a NOOP. DAG size: 45 [2020-12-02 15:32:32,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 15:32:32,504 INFO L93 Difference]: Finished difference Result 34 states and 36 transitions. [2020-12-02 15:32:32,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-02 15:32:32,516 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 15 [2020-12-02 15:32:32,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 15:32:32,517 INFO L225 Difference]: With dead ends: 34 [2020-12-02 15:32:32,517 INFO L226 Difference]: Without dead ends: 22 [2020-12-02 15:32:32,518 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 8.7s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2020-12-02 15:32:32,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-12-02 15:32:32,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2020-12-02 15:32:32,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-12-02 15:32:32,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2020-12-02 15:32:32,523 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 15 [2020-12-02 15:32:32,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 15:32:32,524 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2020-12-02 15:32:32,524 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-02 15:32:32,524 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2020-12-02 15:32:32,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-02 15:32:32,525 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 15:32:32,525 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 15:32:32,739 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-12-02 15:32:32,740 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 15:32:32,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 15:32:32,741 INFO L82 PathProgramCache]: Analyzing trace with hash 461150674, now seen corresponding path program 1 times [2020-12-02 15:32:32,741 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-02 15:32:32,741 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1301882728] [2020-12-02 15:32:32,741 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 [2020-12-02 15:32:33,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-02 15:32:33,012 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-02 15:32:33,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-02 15:32:33,195 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-02 15:32:33,256 INFO L173 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-12-02 15:32:33,256 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-02 15:32:33,457 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-12-02 15:32:33,497 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 03:32:33 BoogieIcfgContainer [2020-12-02 15:32:33,497 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-02 15:32:33,498 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-02 15:32:33,498 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-02 15:32:33,498 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-02 15:32:33,499 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:32:20" (3/4) ... [2020-12-02 15:32:33,501 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-02 15:32:33,555 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-12-02 15:32:33,556 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-02 15:32:33,557 INFO L168 Benchmark]: Toolchain (without parser) took 15260.52 ms. Allocated memory was 46.1 MB in the beginning and 60.8 MB in the end (delta: 14.7 MB). Free memory was 29.7 MB in the beginning and 36.6 MB in the end (delta: -6.9 MB). Peak memory consumption was 8.6 MB. Max. memory is 16.1 GB. [2020-12-02 15:32:33,558 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 37.7 MB. Free memory was 20.3 MB in the beginning and 20.2 MB in the end (delta: 56.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-02 15:32:33,559 INFO L168 Benchmark]: CACSL2BoogieTranslator took 343.23 ms. Allocated memory is still 46.1 MB. Free memory was 29.4 MB in the beginning and 28.6 MB in the end (delta: 877.6 kB). Peak memory consumption was 11.6 MB. Max. memory is 16.1 GB. [2020-12-02 15:32:33,560 INFO L168 Benchmark]: Boogie Procedure Inliner took 52.60 ms. Allocated memory is still 46.1 MB. Free memory was 28.4 MB in the beginning and 26.5 MB in the end (delta: 1.9 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-02 15:32:33,560 INFO L168 Benchmark]: Boogie Preprocessor took 43.67 ms. Allocated memory is still 46.1 MB. Free memory was 26.5 MB in the beginning and 24.7 MB in the end (delta: 1.8 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-02 15:32:33,561 INFO L168 Benchmark]: RCFGBuilder took 1620.96 ms. Allocated memory is still 46.1 MB. Free memory was 24.7 MB in the beginning and 20.7 MB in the end (delta: 3.9 MB). Peak memory consumption was 10.1 MB. Max. memory is 16.1 GB. [2020-12-02 15:32:33,562 INFO L168 Benchmark]: TraceAbstraction took 13134.77 ms. Allocated memory was 46.1 MB in the beginning and 60.8 MB in the end (delta: 14.7 MB). Free memory was 20.2 MB in the beginning and 39.1 MB in the end (delta: -19.0 MB). Peak memory consumption was 14.1 MB. Max. memory is 16.1 GB. [2020-12-02 15:32:33,563 INFO L168 Benchmark]: Witness Printer took 57.92 ms. Allocated memory is still 60.8 MB. Free memory was 39.1 MB in the beginning and 36.6 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-02 15:32:33,567 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 37.7 MB. Free memory was 20.3 MB in the beginning and 20.2 MB in the end (delta: 56.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 343.23 ms. Allocated memory is still 46.1 MB. Free memory was 29.4 MB in the beginning and 28.6 MB in the end (delta: 877.6 kB). Peak memory consumption was 11.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 52.60 ms. Allocated memory is still 46.1 MB. Free memory was 28.4 MB in the beginning and 26.5 MB in the end (delta: 1.9 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 43.67 ms. Allocated memory is still 46.1 MB. Free memory was 26.5 MB in the beginning and 24.7 MB in the end (delta: 1.8 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 1620.96 ms. Allocated memory is still 46.1 MB. Free memory was 24.7 MB in the beginning and 20.7 MB in the end (delta: 3.9 MB). Peak memory consumption was 10.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 13134.77 ms. Allocated memory was 46.1 MB in the beginning and 60.8 MB in the end (delta: 14.7 MB). Free memory was 20.2 MB in the beginning and 39.1 MB in the end (delta: -19.0 MB). Peak memory consumption was 14.1 MB. Max. memory is 16.1 GB. * Witness Printer took 57.92 ms. Allocated memory is still 60.8 MB. Free memory was 39.1 MB in the beginning and 36.6 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 105]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L16] EXPR 1.0e300 [L16] static const double huge_floor = 1.0e300; [L16] 1.0e300 VAL [huge_floor=9094988921128908188] [L100] EXPR 0.0 [L100] EXPR -0.0 [L100] double x = -0.0; [L19] __int32_t i0, i1, j0; [L20] __uint32_t i, j; VAL [huge_floor=9094988921128908188] [L22] ieee_double_shape_type ew_u; [L23] ew_u.value = (x) [L24] EXPR ew_u.parts.msw [L24] (i0) = ew_u.parts.msw [L25] EXPR ew_u.parts.lsw [L25] (i1) = ew_u.parts.lsw [L27] j0 = ((i0 >> 20) & 0x7ff) - 0x3ff VAL [huge_floor=9094988921128908188] [L28] COND TRUE j0 < 20 VAL [huge_floor=9094988921128908188] [L29] COND TRUE j0 < 0 [L30] EXPR huge_floor + x [L30] EXPR 0.0 VAL [huge_floor=9094988921128908188] [L30] COND TRUE huge_floor + x > 0.0 [L31] COND FALSE !(i0 >= 0) VAL [huge_floor=9094988921128908188] [L33] COND TRUE ((i0 & 0x7fffffff) | i1) != 0 [L34] i0 = 0xbff00000 [L35] i1 = 0 VAL [huge_floor=9094988921128908188] [L73] ieee_double_shape_type iw_u; [L74] iw_u.parts.msw = (i0) [L75] iw_u.parts.lsw = (i1) [L76] EXPR iw_u.value [L76] (x) = iw_u.value [L78] return x; VAL [huge_floor=9094988921128908188] [L101] double res = floor_double(x); [L104] EXPR 0.0 [L104] EXPR -0.0 [L104] EXPR res == -0.0 && __signbit_double(res) == 1 VAL [huge_floor=9094988921128908188] [L104] COND TRUE !(res == -0.0 && __signbit_double(res) == 1) [L105] reach_error() VAL [huge_floor=9094988921128908188] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 38 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 13.0s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 4.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 88 SDtfs, 118 SDslu, 76 SDs, 0 SdLazy, 32 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 75 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 9.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=38occurred 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, 12 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 6.3s InterpolantComputationTime, 55 NumberOfCodeBlocks, 55 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 70 ConstructedInterpolants, 17 QuantifiedInterpolants, 11809 SizeOfPredicates, 10 NumberOfNonLiveVariables, 148 ConjunctsInSsa, 17 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...