./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/floats-cbmc-regression/float1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 54a68f41 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/floats-cbmc-regression/float1.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 9558f99275cc5124f556ee48cb271fffdec36102 ........................................................................................................................................................................................................................................ 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/floats-cbmc-regression/float1.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 9558f99275cc5124f556ee48cb271fffdec36102 ................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-54a68f4 [2020-12-03 17:52:47,465 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-03 17:52:47,472 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-03 17:52:47,528 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-03 17:52:47,528 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-03 17:52:47,534 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-03 17:52:47,536 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-03 17:52:47,543 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-03 17:52:47,546 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-03 17:52:47,552 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-03 17:52:47,554 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-03 17:52:47,558 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-03 17:52:47,559 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-03 17:52:47,562 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-03 17:52:47,564 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-03 17:52:47,565 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-03 17:52:47,566 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-03 17:52:47,569 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-03 17:52:47,573 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-03 17:52:47,580 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-03 17:52:47,582 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-03 17:52:47,584 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-03 17:52:47,586 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-03 17:52:47,587 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-03 17:52:47,589 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-03 17:52:47,590 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-03 17:52:47,590 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-03 17:52:47,591 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-03 17:52:47,592 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-03 17:52:47,593 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-03 17:52:47,593 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-03 17:52:47,594 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-03 17:52:47,595 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-03 17:52:47,595 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-03 17:52:47,597 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-03 17:52:47,597 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-03 17:52:47,598 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-03 17:52:47,598 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-03 17:52:47,598 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-03 17:52:47,599 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-03 17:52:47,600 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-03 17:52:47,601 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-12-03 17:52:47,629 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-03 17:52:47,629 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-03 17:52:47,630 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-03 17:52:47,631 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-03 17:52:47,631 INFO L138 SettingsManager]: * Use SBE=true [2020-12-03 17:52:47,631 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-03 17:52:47,631 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-03 17:52:47,631 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-03 17:52:47,632 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-03 17:52:47,632 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-03 17:52:47,632 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-03 17:52:47,632 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-03 17:52:47,632 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-03 17:52:47,633 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-03 17:52:47,633 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-03 17:52:47,633 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-03 17:52:47,633 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-03 17:52:47,633 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-03 17:52:47,634 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-03 17:52:47,634 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-03 17:52:47,634 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-03 17:52:47,634 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-03 17:52:47,634 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-03 17:52:47,635 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-03 17:52:47,635 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-03 17:52:47,635 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-03 17:52:47,635 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-03 17:52:47,635 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-03 17:52:47,635 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9558f99275cc5124f556ee48cb271fffdec36102 [2020-12-03 17:52:48,003 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-03 17:52:48,039 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-03 17:52:48,042 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-03 17:52:48,044 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-03 17:52:48,044 INFO L275 PluginConnector]: CDTParser initialized [2020-12-03 17:52:48,045 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/floats-cbmc-regression/float1.c [2020-12-03 17:52:48,126 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/086cc2029/0d5191ac39634b3ebcecdb7a8a6733fd/FLAG708b1c1a0 [2020-12-03 17:52:48,725 INFO L306 CDTParser]: Found 1 translation units. [2020-12-03 17:52:48,726 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/floats-cbmc-regression/float1.c [2020-12-03 17:52:48,734 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/086cc2029/0d5191ac39634b3ebcecdb7a8a6733fd/FLAG708b1c1a0 [2020-12-03 17:52:49,110 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/086cc2029/0d5191ac39634b3ebcecdb7a8a6733fd [2020-12-03 17:52:49,113 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-03 17:52:49,116 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-03 17:52:49,117 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-03 17:52:49,117 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-03 17:52:49,123 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-03 17:52:49,124 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.12 05:52:49" (1/1) ... [2020-12-03 17:52:49,128 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d369219 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 05:52:49, skipping insertion in model container [2020-12-03 17:52:49,128 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.12 05:52:49" (1/1) ... [2020-12-03 17:52:49,137 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-03 17:52:49,150 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-03 17:52:49,307 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/floats-cbmc-regression/float1.c[371,384] [2020-12-03 17:52:49,312 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/floats-cbmc-regression/float1.c[525,538] [2020-12-03 17:52:49,314 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-03 17:52:49,323 INFO L203 MainTranslator]: Completed pre-run [2020-12-03 17:52:49,339 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/floats-cbmc-regression/float1.c[371,384] [2020-12-03 17:52:49,340 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/floats-cbmc-regression/float1.c[525,538] [2020-12-03 17:52:49,341 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-03 17:52:49,357 INFO L208 MainTranslator]: Completed translation [2020-12-03 17:52:49,357 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 05:52:49 WrapperNode [2020-12-03 17:52:49,358 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-03 17:52:49,359 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-03 17:52:49,359 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-03 17:52:49,360 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-03 17:52:49,368 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 05:52:49" (1/1) ... [2020-12-03 17:52:49,376 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 05:52:49" (1/1) ... [2020-12-03 17:52:49,394 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-03 17:52:49,395 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-03 17:52:49,396 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-03 17:52:49,396 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-03 17:52:49,410 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 05:52:49" (1/1) ... [2020-12-03 17:52:49,411 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 05:52:49" (1/1) ... [2020-12-03 17:52:49,413 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 05:52:49" (1/1) ... [2020-12-03 17:52:49,414 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 05:52:49" (1/1) ... [2020-12-03 17:52:49,421 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 05:52:49" (1/1) ... [2020-12-03 17:52:49,423 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 05:52:49" (1/1) ... [2020-12-03 17:52:49,430 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 05:52:49" (1/1) ... [2020-12-03 17:52:49,432 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-03 17:52:49,434 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-03 17:52:49,434 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-03 17:52:49,435 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-03 17:52:49,435 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 05:52:49" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-03 17:52:49,525 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-03 17:52:49,526 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-03 17:52:49,526 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-03 17:52:49,526 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-03 17:52:49,728 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-03 17:52:49,729 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2020-12-03 17:52:49,730 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 05:52:49 BoogieIcfgContainer [2020-12-03 17:52:49,731 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-03 17:52:49,733 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-03 17:52:49,733 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-03 17:52:49,737 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-03 17:52:49,737 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.12 05:52:49" (1/3) ... [2020-12-03 17:52:49,738 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1624b5ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.12 05:52:49, skipping insertion in model container [2020-12-03 17:52:49,738 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 05:52:49" (2/3) ... [2020-12-03 17:52:49,739 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1624b5ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.12 05:52:49, skipping insertion in model container [2020-12-03 17:52:49,739 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 05:52:49" (3/3) ... [2020-12-03 17:52:49,741 INFO L111 eAbstractionObserver]: Analyzing ICFG float1.c [2020-12-03 17:52:49,758 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-03 17:52:49,762 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-12-03 17:52:49,778 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-12-03 17:52:49,809 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-03 17:52:49,810 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-03 17:52:49,810 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-03 17:52:49,810 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-03 17:52:49,810 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-03 17:52:49,810 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-03 17:52:49,811 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-03 17:52:49,811 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-03 17:52:49,833 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states. [2020-12-03 17:52:49,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-12-03 17:52:49,846 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 17:52:49,847 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-12-03 17:52:49,849 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-03 17:52:49,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 17:52:49,864 INFO L82 PathProgramCache]: Analyzing trace with hash 925604, now seen corresponding path program 1 times [2020-12-03 17:52:49,887 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-03 17:52:49,890 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006381738] [2020-12-03 17:52:49,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-03 17:52:50,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-03 17:52:50,055 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-03 17:52:50,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-03 17:52:50,073 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-03 17:52:50,103 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-03 17:52:50,104 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-03 17:52:50,104 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-03 17:52:50,131 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.12 05:52:50 BoogieIcfgContainer [2020-12-03 17:52:50,131 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-03 17:52:50,132 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-03 17:52:50,132 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-03 17:52:50,133 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-03 17:52:50,133 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 05:52:49" (3/4) ... [2020-12-03 17:52:50,137 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-03 17:52:50,138 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-03 17:52:50,141 INFO L168 Benchmark]: Toolchain (without parser) took 1023.91 ms. Allocated memory is still 44.0 MB. Free memory was 28.9 MB in the beginning and 26.2 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-03 17:52:50,142 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 35.7 MB. Free memory was 23.1 MB in the beginning and 23.1 MB in the end (delta: 26.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-03 17:52:50,143 INFO L168 Benchmark]: CACSL2BoogieTranslator took 241.16 ms. Allocated memory is still 44.0 MB. Free memory was 28.7 MB in the beginning and 19.4 MB in the end (delta: 9.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-12-03 17:52:50,144 INFO L168 Benchmark]: Boogie Procedure Inliner took 35.32 ms. Allocated memory is still 44.0 MB. Free memory was 19.4 MB in the beginning and 18.0 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-03 17:52:50,145 INFO L168 Benchmark]: Boogie Preprocessor took 37.05 ms. Allocated memory is still 44.0 MB. Free memory was 18.0 MB in the beginning and 29.0 MB in the end (delta: -11.1 MB). Peak memory consumption was 4.8 MB. Max. memory is 16.1 GB. [2020-12-03 17:52:50,146 INFO L168 Benchmark]: RCFGBuilder took 296.94 ms. Allocated memory is still 44.0 MB. Free memory was 29.0 MB in the beginning and 28.5 MB in the end (delta: 545.4 kB). Peak memory consumption was 11.4 MB. Max. memory is 16.1 GB. [2020-12-03 17:52:50,147 INFO L168 Benchmark]: TraceAbstraction took 398.39 ms. Allocated memory is still 44.0 MB. Free memory was 28.0 MB in the beginning and 26.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 11.0 MB. Max. memory is 16.1 GB. [2020-12-03 17:52:50,148 INFO L168 Benchmark]: Witness Printer took 5.61 ms. Allocated memory is still 44.0 MB. Free memory was 26.6 MB in the beginning and 26.2 MB in the end (delta: 368.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-03 17:52:50,153 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 35.7 MB. Free memory was 23.1 MB in the beginning and 23.1 MB in the end (delta: 26.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 241.16 ms. Allocated memory is still 44.0 MB. Free memory was 28.7 MB in the beginning and 19.4 MB in the end (delta: 9.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 35.32 ms. Allocated memory is still 44.0 MB. Free memory was 19.4 MB in the beginning and 18.0 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 37.05 ms. Allocated memory is still 44.0 MB. Free memory was 18.0 MB in the beginning and 29.0 MB in the end (delta: -11.1 MB). Peak memory consumption was 4.8 MB. Max. memory is 16.1 GB. * RCFGBuilder took 296.94 ms. Allocated memory is still 44.0 MB. Free memory was 29.0 MB in the beginning and 28.5 MB in the end (delta: 545.4 kB). Peak memory consumption was 11.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 398.39 ms. Allocated memory is still 44.0 MB. Free memory was 28.0 MB in the beginning and 26.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 11.0 MB. Max. memory is 16.1 GB. * Witness Printer took 5.61 ms. Allocated memory is still 44.0 MB. Free memory was 26.6 MB in the beginning and 26.2 MB in the end (delta: 368.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 12]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of to_int at line 10, overapproximation of someBinaryArithmeticDOUBLEoperation at line 9, overapproximation of to_real at line 8. Possible FailurePath: [L5] double x; [L6] int y; [L8] x=2 [L9] x-=0.6 [L10] y=x [L12] COND TRUE !(y==1) [L12] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 12 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=12occurred 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: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 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 0.2.1-54a68f4 [2020-12-03 17:52:52,737 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-03 17:52:52,739 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-03 17:52:52,777 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-03 17:52:52,778 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-03 17:52:52,779 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-03 17:52:52,781 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-03 17:52:52,783 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-03 17:52:52,785 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-03 17:52:52,786 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-03 17:52:52,787 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-03 17:52:52,789 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-03 17:52:52,789 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-03 17:52:52,790 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-03 17:52:52,791 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-03 17:52:52,793 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-03 17:52:52,794 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-03 17:52:52,795 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-03 17:52:52,797 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-03 17:52:52,799 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-03 17:52:52,806 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-03 17:52:52,813 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-03 17:52:52,815 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-03 17:52:52,817 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-03 17:52:52,823 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-03 17:52:52,825 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-03 17:52:52,825 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-03 17:52:52,827 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-03 17:52:52,828 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-03 17:52:52,831 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-03 17:52:52,833 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-03 17:52:52,834 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-03 17:52:52,835 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-03 17:52:52,838 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-03 17:52:52,839 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-03 17:52:52,840 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-03 17:52:52,842 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-03 17:52:52,842 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-03 17:52:52,842 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-03 17:52:52,845 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-03 17:52:52,846 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-03 17:52:52,847 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-12-03 17:52:52,898 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-03 17:52:52,898 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-03 17:52:52,900 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-03 17:52:52,901 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-03 17:52:52,901 INFO L138 SettingsManager]: * Use SBE=true [2020-12-03 17:52:52,902 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-03 17:52:52,902 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-03 17:52:52,902 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-03 17:52:52,902 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-03 17:52:52,903 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-03 17:52:52,904 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-03 17:52:52,904 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-03 17:52:52,904 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-12-03 17:52:52,905 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-12-03 17:52:52,905 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-03 17:52:52,905 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-03 17:52:52,905 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-03 17:52:52,906 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-03 17:52:52,906 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-03 17:52:52,906 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-03 17:52:52,906 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-03 17:52:52,907 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-03 17:52:52,907 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-03 17:52:52,907 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-03 17:52:52,907 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-03 17:52:52,908 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-12-03 17:52:52,908 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2020-12-03 17:52:52,908 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-03 17:52:52,908 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-03 17:52:52,908 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-03 17:52:52,909 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9558f99275cc5124f556ee48cb271fffdec36102 [2020-12-03 17:52:53,298 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-03 17:52:53,350 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-03 17:52:53,355 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-03 17:52:53,357 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-03 17:52:53,358 INFO L275 PluginConnector]: CDTParser initialized [2020-12-03 17:52:53,359 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/floats-cbmc-regression/float1.c [2020-12-03 17:52:53,417 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3b3d9d0db/80ae3625c5144445a010f3ea9377542c/FLAG28549e10c [2020-12-03 17:52:54,075 INFO L306 CDTParser]: Found 1 translation units. [2020-12-03 17:52:54,076 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/floats-cbmc-regression/float1.c [2020-12-03 17:52:54,087 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3b3d9d0db/80ae3625c5144445a010f3ea9377542c/FLAG28549e10c [2020-12-03 17:52:54,442 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3b3d9d0db/80ae3625c5144445a010f3ea9377542c [2020-12-03 17:52:54,445 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-03 17:52:54,448 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-03 17:52:54,449 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-03 17:52:54,449 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-03 17:52:54,455 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-03 17:52:54,456 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.12 05:52:54" (1/1) ... [2020-12-03 17:52:54,460 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39321eb2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 05:52:54, skipping insertion in model container [2020-12-03 17:52:54,460 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.12 05:52:54" (1/1) ... [2020-12-03 17:52:54,494 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-03 17:52:54,508 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-03 17:52:54,659 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/floats-cbmc-regression/float1.c[371,384] [2020-12-03 17:52:54,664 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/floats-cbmc-regression/float1.c[525,538] [2020-12-03 17:52:54,666 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-03 17:52:54,684 INFO L203 MainTranslator]: Completed pre-run [2020-12-03 17:52:54,697 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/floats-cbmc-regression/float1.c[371,384] [2020-12-03 17:52:54,698 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/floats-cbmc-regression/float1.c[525,538] [2020-12-03 17:52:54,699 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-03 17:52:54,716 INFO L208 MainTranslator]: Completed translation [2020-12-03 17:52:54,717 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 05:52:54 WrapperNode [2020-12-03 17:52:54,717 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-03 17:52:54,718 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-03 17:52:54,718 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-03 17:52:54,718 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-03 17:52:54,727 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 05:52:54" (1/1) ... [2020-12-03 17:52:54,737 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 05:52:54" (1/1) ... [2020-12-03 17:52:54,761 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-03 17:52:54,762 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-03 17:52:54,763 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-03 17:52:54,763 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-03 17:52:54,772 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 05:52:54" (1/1) ... [2020-12-03 17:52:54,772 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 05:52:54" (1/1) ... [2020-12-03 17:52:54,775 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 05:52:54" (1/1) ... [2020-12-03 17:52:54,775 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 05:52:54" (1/1) ... [2020-12-03 17:52:54,782 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 05:52:54" (1/1) ... [2020-12-03 17:52:54,784 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 05:52:54" (1/1) ... [2020-12-03 17:52:54,786 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 05:52:54" (1/1) ... [2020-12-03 17:52:54,788 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-03 17:52:54,789 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-03 17:52:54,790 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-03 17:52:54,790 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-03 17:52:54,791 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 05:52:54" (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 [2020-12-03 17:52:54,894 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-03 17:52:54,894 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-03 17:52:54,894 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-12-03 17:52:54,894 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-03 17:52:56,220 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-03 17:52:56,221 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2020-12-03 17:52:56,223 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 05:52:56 BoogieIcfgContainer [2020-12-03 17:52:56,223 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-03 17:52:56,225 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-03 17:52:56,225 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-03 17:52:56,229 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-03 17:52:56,229 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.12 05:52:54" (1/3) ... [2020-12-03 17:52:56,230 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74cdf3b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.12 05:52:56, skipping insertion in model container [2020-12-03 17:52:56,230 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 05:52:54" (2/3) ... [2020-12-03 17:52:56,231 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74cdf3b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.12 05:52:56, skipping insertion in model container [2020-12-03 17:52:56,231 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 05:52:56" (3/3) ... [2020-12-03 17:52:56,233 INFO L111 eAbstractionObserver]: Analyzing ICFG float1.c [2020-12-03 17:52:56,248 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-03 17:52:56,251 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-12-03 17:52:56,269 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-12-03 17:52:56,298 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-03 17:52:56,298 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-03 17:52:56,298 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-03 17:52:56,298 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-03 17:52:56,299 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-03 17:52:56,299 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-03 17:52:56,299 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-03 17:52:56,299 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-03 17:52:56,314 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states. [2020-12-03 17:52:56,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-12-03 17:52:56,319 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 17:52:56,320 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-12-03 17:52:56,321 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-03 17:52:56,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 17:52:56,328 INFO L82 PathProgramCache]: Analyzing trace with hash 925604, now seen corresponding path program 1 times [2020-12-03 17:52:56,341 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-03 17:52:56,342 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [948458969] [2020-12-03 17:52:56,343 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 [2020-12-03 17:52:56,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 17:52:56,542 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-03 17:52:56,548 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-03 17:52:56,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-03 17:52:56,621 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-03 17:52:56,622 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [948458969] [2020-12-03 17:52:56,622 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-03 17:52:56,623 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-03 17:52:56,624 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182599606] [2020-12-03 17:52:56,628 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-03 17:52:56,629 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-03 17:52:56,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-03 17:52:56,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-03 17:52:56,646 INFO L87 Difference]: Start difference. First operand 12 states. Second operand 4 states. [2020-12-03 17:52:57,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 17:52:57,139 INFO L93 Difference]: Finished difference Result 17 states and 18 transitions. [2020-12-03 17:52:57,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-03 17:52:57,142 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2020-12-03 17:52:57,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 17:52:57,149 INFO L225 Difference]: With dead ends: 17 [2020-12-03 17:52:57,149 INFO L226 Difference]: Without dead ends: 0 [2020-12-03 17:52:57,152 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-03 17:52:57,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-03 17:52:57,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-03 17:52:57,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-03 17:52:57,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-03 17:52:57,187 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 4 [2020-12-03 17:52:57,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 17:52:57,188 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-03 17:52:57,188 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-03 17:52:57,188 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-03 17:52:57,188 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-03 17:52:57,405 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-12-03 17:52:57,408 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-03 17:52:57,411 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-03 17:52:57,411 INFO L262 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-12-03 17:52:57,412 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-03 17:52:57,412 INFO L262 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-12-03 17:52:57,412 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2020-12-03 17:52:57,412 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-12-03 17:52:57,412 INFO L262 CegarLoopResult]: For program point L19(line 19) no Hoare annotation was computed. [2020-12-03 17:52:57,412 INFO L262 CegarLoopResult]: For program point L19-1(line 19) no Hoare annotation was computed. [2020-12-03 17:52:57,412 INFO L262 CegarLoopResult]: For program point L12(line 12) no Hoare annotation was computed. [2020-12-03 17:52:57,412 INFO L262 CegarLoopResult]: For program point L12-1(line 12) no Hoare annotation was computed. [2020-12-03 17:52:57,413 INFO L262 CegarLoopResult]: For program point L12-3(line 12) no Hoare annotation was computed. [2020-12-03 17:52:57,413 INFO L262 CegarLoopResult]: For program point L4(lines 4 20) no Hoare annotation was computed. [2020-12-03 17:52:57,418 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.12 05:52:57 BoogieIcfgContainer [2020-12-03 17:52:57,418 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-03 17:52:57,419 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-03 17:52:57,419 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-03 17:52:57,419 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-03 17:52:57,420 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 05:52:56" (3/4) ... [2020-12-03 17:52:57,423 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-03 17:52:57,432 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2020-12-03 17:52:57,432 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-03 17:52:57,433 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-12-03 17:52:57,433 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-03 17:52:57,466 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-12-03 17:52:57,467 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-03 17:52:57,471 INFO L168 Benchmark]: Toolchain (without parser) took 3021.54 ms. Allocated memory was 44.0 MB in the beginning and 54.5 MB in the end (delta: 10.5 MB). Free memory was 21.8 MB in the beginning and 33.6 MB in the end (delta: -11.8 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-03 17:52:57,474 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 44.0 MB. Free memory was 31.5 MB in the beginning and 31.5 MB in the end (delta: 42.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-03 17:52:57,476 INFO L168 Benchmark]: CACSL2BoogieTranslator took 268.06 ms. Allocated memory is still 44.0 MB. Free memory was 21.7 MB in the beginning and 21.0 MB in the end (delta: 658.6 kB). Peak memory consumption was 3.4 MB. Max. memory is 16.1 GB. [2020-12-03 17:52:57,477 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.46 ms. Allocated memory was 44.0 MB in the beginning and 54.5 MB in the end (delta: 10.5 MB). Free memory was 20.9 MB in the beginning and 39.9 MB in the end (delta: -19.1 MB). Peak memory consumption was 4.7 MB. Max. memory is 16.1 GB. [2020-12-03 17:52:57,479 INFO L168 Benchmark]: Boogie Preprocessor took 26.24 ms. Allocated memory is still 54.5 MB. Free memory was 39.9 MB in the beginning and 38.9 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-03 17:52:57,481 INFO L168 Benchmark]: RCFGBuilder took 1433.74 ms. Allocated memory is still 54.5 MB. Free memory was 38.9 MB in the beginning and 28.1 MB in the end (delta: 10.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-12-03 17:52:57,483 INFO L168 Benchmark]: TraceAbstraction took 1193.24 ms. Allocated memory is still 54.5 MB. Free memory was 27.6 MB in the beginning and 36.1 MB in the end (delta: -8.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-03 17:52:57,485 INFO L168 Benchmark]: Witness Printer took 49.04 ms. Allocated memory is still 54.5 MB. Free memory was 35.8 MB in the beginning and 33.6 MB in the end (delta: 2.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-03 17:52:57,492 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 44.0 MB. Free memory was 31.5 MB in the beginning and 31.5 MB in the end (delta: 42.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 268.06 ms. Allocated memory is still 44.0 MB. Free memory was 21.7 MB in the beginning and 21.0 MB in the end (delta: 658.6 kB). Peak memory consumption was 3.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 43.46 ms. Allocated memory was 44.0 MB in the beginning and 54.5 MB in the end (delta: 10.5 MB). Free memory was 20.9 MB in the beginning and 39.9 MB in the end (delta: -19.1 MB). Peak memory consumption was 4.7 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 26.24 ms. Allocated memory is still 54.5 MB. Free memory was 39.9 MB in the beginning and 38.9 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 1433.74 ms. Allocated memory is still 54.5 MB. Free memory was 38.9 MB in the beginning and 28.1 MB in the end (delta: 10.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1193.24 ms. Allocated memory is still 54.5 MB. Free memory was 27.6 MB in the beginning and 36.1 MB in the end (delta: -8.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 49.04 ms. Allocated memory is still 54.5 MB. Free memory was 35.8 MB in the beginning and 33.6 MB in the end (delta: 2.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 12]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 12 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.1s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 3 SDtfs, 9 SDslu, 1 SDs, 0 SdLazy, 4 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=12occurred 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: 0.0s HoareAnnotationTime, 0 LocationsWithAnnotation, 0 PreInvPairs, 0 NumberOfFragments, 0 HoareAnnotationTreeSize, 0 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 0 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 3 ConstructedInterpolants, 0 QuantifiedInterpolants, 48 SizeOfPredicates, 3 NumberOfNonLiveVariables, 26 ConjunctsInSsa, 4 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 proved your program to be correct! Received shutdown request...