./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-newlib/double_req_bl_1092b.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 096883e9 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/float-newlib/double_req_bl_1092b.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 716c28290dbb6f2a00a15a2121f6ea544c27813b ...................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/float-newlib/double_req_bl_1092b.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 716c28290dbb6f2a00a15a2121f6ea544c27813b ........................................................................................................................................................................................................................................................................................................................................................................................................................ 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 0.2.0-096883e [2020-12-01 23:20:32,864 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-01 23:20:32,867 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-01 23:20:32,903 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-01 23:20:32,904 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-01 23:20:32,905 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-01 23:20:32,907 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-01 23:20:32,909 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-01 23:20:32,911 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-01 23:20:32,912 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-01 23:20:32,913 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-01 23:20:32,915 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-01 23:20:32,915 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-01 23:20:32,916 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-01 23:20:32,918 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-01 23:20:32,919 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-01 23:20:32,920 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-01 23:20:32,921 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-01 23:20:32,923 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-01 23:20:32,925 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-01 23:20:32,927 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-01 23:20:32,928 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-01 23:20:32,930 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-01 23:20:32,931 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-01 23:20:32,934 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-01 23:20:32,934 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-01 23:20:32,935 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-01 23:20:32,936 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-01 23:20:32,936 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-01 23:20:32,937 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-01 23:20:32,938 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-01 23:20:32,939 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-01 23:20:32,940 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-01 23:20:32,941 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-01 23:20:32,942 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-01 23:20:32,942 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-01 23:20:32,943 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-01 23:20:32,944 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-01 23:20:32,944 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-01 23:20:32,946 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-01 23:20:32,947 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-01 23:20:32,948 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-12-01 23:20:33,000 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-01 23:20:33,000 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-01 23:20:33,002 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-01 23:20:33,003 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-01 23:20:33,003 INFO L138 SettingsManager]: * Use SBE=true [2020-12-01 23:20:33,003 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-01 23:20:33,003 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-01 23:20:33,003 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-01 23:20:33,004 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-01 23:20:33,004 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-01 23:20:33,005 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-01 23:20:33,005 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-01 23:20:33,005 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-01 23:20:33,006 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-01 23:20:33,006 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-01 23:20:33,006 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-01 23:20:33,006 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-01 23:20:33,006 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-01 23:20:33,007 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-01 23:20:33,007 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-01 23:20:33,007 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-01 23:20:33,007 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-01 23:20:33,008 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-01 23:20:33,008 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-01 23:20:33,008 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-01 23:20:33,008 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-01 23:20:33,008 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-01 23:20:33,009 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-01 23:20:33,009 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-01 23:20:33,009 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 716c28290dbb6f2a00a15a2121f6ea544c27813b [2020-12-01 23:20:33,373 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-01 23:20:33,401 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-01 23:20:33,404 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-01 23:20:33,406 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-01 23:20:33,407 INFO L275 PluginConnector]: CDTParser initialized [2020-12-01 23:20:33,408 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_1092b.c [2020-12-01 23:20:33,490 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0a06f69eb/16c97520e4554c4d9d3202240dce6c11/FLAG813a3de60 [2020-12-01 23:20:34,091 INFO L306 CDTParser]: Found 1 translation units. [2020-12-01 23:20:34,092 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1092b.c [2020-12-01 23:20:34,105 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0a06f69eb/16c97520e4554c4d9d3202240dce6c11/FLAG813a3de60 [2020-12-01 23:20:34,451 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0a06f69eb/16c97520e4554c4d9d3202240dce6c11 [2020-12-01 23:20:34,456 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-01 23:20:34,458 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-01 23:20:34,460 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-01 23:20:34,462 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-01 23:20:34,466 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-01 23:20:34,466 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 11:20:34" (1/1) ... [2020-12-01 23:20:34,471 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5674020d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:20:34, skipping insertion in model container [2020-12-01 23:20:34,471 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 11:20:34" (1/1) ... [2020-12-01 23:20:34,493 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-01 23:20:34,536 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-01 23:20:34,703 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1092b.c[2109,2122] [2020-12-01 23:20:34,706 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 23:20:34,715 INFO L203 MainTranslator]: Completed pre-run [2020-12-01 23:20:34,746 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1092b.c[2109,2122] [2020-12-01 23:20:34,747 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 23:20:34,763 INFO L208 MainTranslator]: Completed translation [2020-12-01 23:20:34,764 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:20:34 WrapperNode [2020-12-01 23:20:34,764 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-01 23:20:34,766 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-01 23:20:34,766 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-01 23:20:34,766 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-01 23:20:34,775 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:20:34" (1/1) ... [2020-12-01 23:20:34,784 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:20:34" (1/1) ... [2020-12-01 23:20:34,809 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-01 23:20:34,810 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-01 23:20:34,811 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-01 23:20:34,811 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-01 23:20:34,820 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:20:34" (1/1) ... [2020-12-01 23:20:34,820 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:20:34" (1/1) ... [2020-12-01 23:20:34,823 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:20:34" (1/1) ... [2020-12-01 23:20:34,824 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:20:34" (1/1) ... [2020-12-01 23:20:34,832 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:20:34" (1/1) ... [2020-12-01 23:20:34,842 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:20:34" (1/1) ... [2020-12-01 23:20:34,844 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:20:34" (1/1) ... [2020-12-01 23:20:34,851 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-01 23:20:34,852 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-01 23:20:34,858 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-01 23:20:34,858 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-01 23:20:34,859 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:20:34" (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 [2020-12-01 23:20:34,971 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-01 23:20:34,973 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-01 23:20:34,974 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-12-01 23:20:34,974 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-01 23:20:34,974 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-12-01 23:20:34,975 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-01 23:20:34,975 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-01 23:20:34,977 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-01 23:20:34,977 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-01 23:20:35,396 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-01 23:20:35,396 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-12-01 23:20:35,398 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 11:20:35 BoogieIcfgContainer [2020-12-01 23:20:35,398 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-01 23:20:35,400 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-01 23:20:35,400 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-01 23:20:35,404 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-01 23:20:35,404 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.12 11:20:34" (1/3) ... [2020-12-01 23:20:35,405 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c12be36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 11:20:35, skipping insertion in model container [2020-12-01 23:20:35,406 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:20:34" (2/3) ... [2020-12-01 23:20:35,406 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c12be36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 11:20:35, skipping insertion in model container [2020-12-01 23:20:35,407 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 11:20:35" (3/3) ... [2020-12-01 23:20:35,408 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1092b.c [2020-12-01 23:20:35,428 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-01 23:20:35,432 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-01 23:20:35,445 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-01 23:20:35,471 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-01 23:20:35,472 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-01 23:20:35,472 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-01 23:20:35,472 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-01 23:20:35,472 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-01 23:20:35,472 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-01 23:20:35,473 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-01 23:20:35,473 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-01 23:20:35,487 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2020-12-01 23:20:35,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-01 23:20:35,494 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 23:20:35,495 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 23:20:35,496 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 23:20:35,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 23:20:35,502 INFO L82 PathProgramCache]: Analyzing trace with hash 1046119076, now seen corresponding path program 1 times [2020-12-01 23:20:35,513 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 23:20:35,513 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247756894] [2020-12-01 23:20:35,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 23:20:35,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 23:20:35,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 23:20:35,694 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247756894] [2020-12-01 23:20:35,695 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 23:20:35,696 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-01 23:20:35,696 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595320718] [2020-12-01 23:20:35,704 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-01 23:20:35,704 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 23:20:35,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-01 23:20:35,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-01 23:20:35,722 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 2 states. [2020-12-01 23:20:35,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 23:20:35,753 INFO L93 Difference]: Finished difference Result 64 states and 102 transitions. [2020-12-01 23:20:35,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-01 23:20:35,754 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-12-01 23:20:35,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 23:20:35,764 INFO L225 Difference]: With dead ends: 64 [2020-12-01 23:20:35,765 INFO L226 Difference]: Without dead ends: 30 [2020-12-01 23:20:35,768 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 [2020-12-01 23:20:35,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-12-01 23:20:35,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-12-01 23:20:35,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-12-01 23:20:35,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 44 transitions. [2020-12-01 23:20:35,805 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 44 transitions. Word has length 10 [2020-12-01 23:20:35,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 23:20:35,806 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 44 transitions. [2020-12-01 23:20:35,806 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-01 23:20:35,806 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 44 transitions. [2020-12-01 23:20:35,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-01 23:20:35,807 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 23:20:35,807 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 23:20:35,808 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-01 23:20:35,808 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 23:20:35,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 23:20:35,809 INFO L82 PathProgramCache]: Analyzing trace with hash -1289188121, now seen corresponding path program 1 times [2020-12-01 23:20:35,809 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 23:20:35,809 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391451824] [2020-12-01 23:20:35,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 23:20:35,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 23:20:35,899 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 23:20:35,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 23:20:35,961 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 23:20:35,987 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-01 23:20:35,987 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-01 23:20:35,988 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-01 23:20:36,020 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.12 11:20:36 BoogieIcfgContainer [2020-12-01 23:20:36,020 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-01 23:20:36,021 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-01 23:20:36,021 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-01 23:20:36,022 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-01 23:20:36,022 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 11:20:35" (3/4) ... [2020-12-01 23:20:36,026 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-01 23:20:36,026 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-01 23:20:36,029 INFO L168 Benchmark]: Toolchain (without parser) took 1569.43 ms. Allocated memory was 41.9 MB in the beginning and 52.4 MB in the end (delta: 10.5 MB). Free memory was 18.7 MB in the beginning and 24.5 MB in the end (delta: -5.8 MB). Peak memory consumption was 6.2 MB. Max. memory is 16.1 GB. [2020-12-01 23:20:36,030 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 41.9 MB. Free memory is still 21.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 23:20:36,031 INFO L168 Benchmark]: CACSL2BoogieTranslator took 304.98 ms. Allocated memory was 41.9 MB in the beginning and 52.4 MB in the end (delta: 10.5 MB). Free memory was 18.5 MB in the beginning and 27.5 MB in the end (delta: -9.0 MB). Peak memory consumption was 3.2 MB. Max. memory is 16.1 GB. [2020-12-01 23:20:36,032 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.91 ms. Allocated memory is still 52.4 MB. Free memory was 27.5 MB in the beginning and 25.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 23:20:36,033 INFO L168 Benchmark]: Boogie Preprocessor took 41.11 ms. Allocated memory is still 52.4 MB. Free memory was 25.7 MB in the beginning and 24.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 23:20:36,034 INFO L168 Benchmark]: RCFGBuilder took 545.95 ms. Allocated memory is still 52.4 MB. Free memory was 24.3 MB in the beginning and 31.6 MB in the end (delta: -7.3 MB). Peak memory consumption was 6.5 MB. Max. memory is 16.1 GB. [2020-12-01 23:20:36,035 INFO L168 Benchmark]: TraceAbstraction took 620.25 ms. Allocated memory is still 52.4 MB. Free memory was 31.2 MB in the beginning and 24.8 MB in the end (delta: 6.4 MB). Peak memory consumption was 4.8 MB. Max. memory is 16.1 GB. [2020-12-01 23:20:36,035 INFO L168 Benchmark]: Witness Printer took 5.31 ms. Allocated memory is still 52.4 MB. Free memory was 24.8 MB in the beginning and 24.5 MB in the end (delta: 275.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 23:20:36,040 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 41.9 MB. Free memory is still 21.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 304.98 ms. Allocated memory was 41.9 MB in the beginning and 52.4 MB in the end (delta: 10.5 MB). Free memory was 18.5 MB in the beginning and 27.5 MB in the end (delta: -9.0 MB). Peak memory consumption was 3.2 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 43.91 ms. Allocated memory is still 52.4 MB. Free memory was 27.5 MB in the beginning and 25.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 41.11 ms. Allocated memory is still 52.4 MB. Free memory was 25.7 MB in the beginning and 24.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 545.95 ms. Allocated memory is still 52.4 MB. Free memory was 24.3 MB in the beginning and 31.6 MB in the end (delta: -7.3 MB). Peak memory consumption was 6.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 620.25 ms. Allocated memory is still 52.4 MB. Free memory was 31.2 MB in the beginning and 24.8 MB in the end (delta: 6.4 MB). Peak memory consumption was 4.8 MB. Max. memory is 16.1 GB. * Witness Printer took 5.31 ms. Allocated memory is still 52.4 MB. Free memory was 24.8 MB in the beginning and 24.5 MB in the end (delta: 275.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 98]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of shiftRight at line 43, overapproximation of bitwiseOr at line 44, overapproximation of bitwiseAnd at line 30, overapproximation of someBinaryDOUBLEComparisonOperation at line 97. Possible FailurePath: [L19] static const double huge_ceil = 1.0e300; VAL [huge_ceil=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L93] double x = 0.0; [L22] __int32_t i0, i1, j0; [L23] __uint32_t i, j; VAL [huge_ceil=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L25] ieee_double_shape_type ew_u; [L26] ew_u.value = (x) [L27] EXPR ew_u.parts.msw [L27] (i0) = ew_u.parts.msw [L28] EXPR ew_u.parts.lsw [L28] (i1) = ew_u.parts.lsw [L30] j0 = ((i0 >> 20) & 0x7ff) - 0x3ff VAL [huge_ceil=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L31] COND TRUE j0 < 20 VAL [huge_ceil=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L32] COND FALSE !(j0 < 0) [L43] i = (0x000fffff) >> j0 VAL [huge_ceil=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L44] COND TRUE ((i0 & i) | i1) == 0 [L45] return x; VAL [huge_ceil=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L94] double res = ceil_double(x); [L97] COND TRUE res != x VAL [huge_ceil=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L98] reach_error() VAL [huge_ceil=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 33 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.5s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 47 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=33occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 21 NumberOfCodeBlocks, 21 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 81 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 0.2.0-096883e [2020-12-01 23:20:38,576 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-01 23:20:38,580 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-01 23:20:38,634 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-01 23:20:38,634 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-01 23:20:38,640 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-01 23:20:38,642 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-01 23:20:38,649 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-01 23:20:38,656 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-01 23:20:38,662 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-01 23:20:38,664 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-01 23:20:38,665 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-01 23:20:38,666 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-01 23:20:38,669 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-01 23:20:38,670 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-01 23:20:38,672 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-01 23:20:38,673 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-01 23:20:38,677 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-01 23:20:38,680 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-01 23:20:38,687 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-01 23:20:38,689 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-01 23:20:38,690 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-01 23:20:38,693 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-01 23:20:38,694 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-01 23:20:38,702 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-01 23:20:38,703 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-01 23:20:38,703 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-01 23:20:38,705 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-01 23:20:38,706 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-01 23:20:38,707 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-01 23:20:38,708 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-01 23:20:38,709 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-01 23:20:38,711 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-01 23:20:38,712 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-01 23:20:38,713 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-01 23:20:38,714 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-01 23:20:38,714 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-01 23:20:38,715 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-01 23:20:38,715 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-01 23:20:38,717 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-01 23:20:38,718 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-01 23:20:38,719 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-12-01 23:20:38,768 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-01 23:20:38,769 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-01 23:20:38,772 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-01 23:20:38,773 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-01 23:20:38,773 INFO L138 SettingsManager]: * Use SBE=true [2020-12-01 23:20:38,773 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-01 23:20:38,774 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-01 23:20:38,774 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-01 23:20:38,774 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-01 23:20:38,775 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-01 23:20:38,776 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-01 23:20:38,776 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-01 23:20:38,776 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-12-01 23:20:38,776 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-12-01 23:20:38,777 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-01 23:20:38,777 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-01 23:20:38,777 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-01 23:20:38,777 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-01 23:20:38,778 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-01 23:20:38,778 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-01 23:20:38,778 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-01 23:20:38,779 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-01 23:20:38,779 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-01 23:20:38,779 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-01 23:20:38,779 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-01 23:20:38,780 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-01 23:20:38,780 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-12-01 23:20:38,780 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-12-01 23:20:38,780 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-01 23:20:38,781 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-01 23:20:38,781 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-01 23:20:38,781 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 716c28290dbb6f2a00a15a2121f6ea544c27813b [2020-12-01 23:20:39,202 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-01 23:20:39,236 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-01 23:20:39,240 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-01 23:20:39,242 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-01 23:20:39,243 INFO L275 PluginConnector]: CDTParser initialized [2020-12-01 23:20:39,244 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_1092b.c [2020-12-01 23:20:39,330 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/56eb6aca2/aa4fb911421945deb7cfb8413b1e8e44/FLAGfd564b063 [2020-12-01 23:20:39,930 INFO L306 CDTParser]: Found 1 translation units. [2020-12-01 23:20:39,931 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1092b.c [2020-12-01 23:20:39,939 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/56eb6aca2/aa4fb911421945deb7cfb8413b1e8e44/FLAGfd564b063 [2020-12-01 23:20:40,303 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/56eb6aca2/aa4fb911421945deb7cfb8413b1e8e44 [2020-12-01 23:20:40,306 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-01 23:20:40,308 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-01 23:20:40,310 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-01 23:20:40,310 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-01 23:20:40,314 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-01 23:20:40,314 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 11:20:40" (1/1) ... [2020-12-01 23:20:40,318 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a0f1795 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:20:40, skipping insertion in model container [2020-12-01 23:20:40,318 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 11:20:40" (1/1) ... [2020-12-01 23:20:40,326 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-01 23:20:40,344 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-01 23:20:40,615 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1092b.c[2109,2122] [2020-12-01 23:20:40,620 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 23:20:40,642 INFO L203 MainTranslator]: Completed pre-run [2020-12-01 23:20:40,705 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1092b.c[2109,2122] [2020-12-01 23:20:40,706 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 23:20:40,737 INFO L208 MainTranslator]: Completed translation [2020-12-01 23:20:40,737 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:20:40 WrapperNode [2020-12-01 23:20:40,738 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-01 23:20:40,739 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-01 23:20:40,739 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-01 23:20:40,739 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-01 23:20:40,747 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:20:40" (1/1) ... [2020-12-01 23:20:40,759 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:20:40" (1/1) ... [2020-12-01 23:20:40,782 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-01 23:20:40,783 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-01 23:20:40,783 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-01 23:20:40,783 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-01 23:20:40,792 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:20:40" (1/1) ... [2020-12-01 23:20:40,793 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:20:40" (1/1) ... [2020-12-01 23:20:40,798 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:20:40" (1/1) ... [2020-12-01 23:20:40,798 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:20:40" (1/1) ... [2020-12-01 23:20:40,808 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:20:40" (1/1) ... [2020-12-01 23:20:40,813 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:20:40" (1/1) ... [2020-12-01 23:20:40,816 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:20:40" (1/1) ... [2020-12-01 23:20:40,826 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-01 23:20:40,827 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-01 23:20:40,827 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-01 23:20:40,827 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-01 23:20:40,828 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:20:40" (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 [2020-12-01 23:20:40,928 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2020-12-01 23:20:40,928 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2020-12-01 23:20:40,928 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-12-01 23:20:40,929 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-01 23:20:40,929 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-12-01 23:20:40,929 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-01 23:20:40,929 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-01 23:20:40,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-12-01 23:20:40,929 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-01 23:20:42,990 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-01 23:20:42,990 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-12-01 23:20:42,992 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 11:20:42 BoogieIcfgContainer [2020-12-01 23:20:42,992 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-01 23:20:42,993 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-01 23:20:42,993 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-01 23:20:42,997 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-01 23:20:42,997 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.12 11:20:40" (1/3) ... [2020-12-01 23:20:42,998 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@180d3a58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 11:20:42, skipping insertion in model container [2020-12-01 23:20:42,998 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:20:40" (2/3) ... [2020-12-01 23:20:42,998 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@180d3a58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 11:20:42, skipping insertion in model container [2020-12-01 23:20:42,998 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 11:20:42" (3/3) ... [2020-12-01 23:20:43,000 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1092b.c [2020-12-01 23:20:43,014 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-01 23:20:43,018 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-01 23:20:43,030 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-01 23:20:43,055 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-01 23:20:43,055 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-01 23:20:43,056 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-01 23:20:43,056 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-01 23:20:43,056 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-01 23:20:43,056 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-01 23:20:43,056 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-01 23:20:43,056 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-01 23:20:43,070 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2020-12-01 23:20:43,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-01 23:20:43,075 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 23:20:43,076 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 23:20:43,076 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 23:20:43,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 23:20:43,082 INFO L82 PathProgramCache]: Analyzing trace with hash 1046119076, now seen corresponding path program 1 times [2020-12-01 23:20:43,092 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-01 23:20:43,092 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [45873861] [2020-12-01 23:20:43,092 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 [2020-12-01 23:20:43,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 23:20:43,188 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 1 conjunts are in the unsatisfiable core [2020-12-01 23:20:43,193 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 23:20:43,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 23:20:43,221 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-01 23:20:43,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 23:20:43,234 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [45873861] [2020-12-01 23:20:43,235 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-01 23:20:43,235 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-12-01 23:20:43,236 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302442995] [2020-12-01 23:20:43,241 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-01 23:20:43,241 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-01 23:20:43,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-01 23:20:43,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-01 23:20:43,259 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 2 states. [2020-12-01 23:20:43,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 23:20:43,279 INFO L93 Difference]: Finished difference Result 64 states and 102 transitions. [2020-12-01 23:20:43,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-01 23:20:43,281 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-12-01 23:20:43,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 23:20:43,291 INFO L225 Difference]: With dead ends: 64 [2020-12-01 23:20:43,291 INFO L226 Difference]: Without dead ends: 30 [2020-12-01 23:20:43,294 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-01 23:20:43,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-12-01 23:20:43,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-12-01 23:20:43,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-12-01 23:20:43,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 44 transitions. [2020-12-01 23:20:43,331 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 44 transitions. Word has length 10 [2020-12-01 23:20:43,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 23:20:43,331 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 44 transitions. [2020-12-01 23:20:43,331 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-01 23:20:43,331 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 44 transitions. [2020-12-01 23:20:43,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-01 23:20:43,332 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 23:20:43,332 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 23:20:43,544 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-12-01 23:20:43,545 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 23:20:43,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 23:20:43,547 INFO L82 PathProgramCache]: Analyzing trace with hash -1289188121, now seen corresponding path program 1 times [2020-12-01 23:20:43,548 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-01 23:20:43,549 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [196256711] [2020-12-01 23:20:43,549 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 [2020-12-01 23:20:43,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 23:20:43,638 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 8 conjunts are in the unsatisfiable core [2020-12-01 23:20:43,641 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 23:20:43,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 23:20:43,808 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-01 23:20:43,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 23:20:43,919 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [196256711] [2020-12-01 23:20:43,919 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-01 23:20:43,920 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2020-12-01 23:20:43,920 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012999423] [2020-12-01 23:20:43,923 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-01 23:20:43,923 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-01 23:20:43,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-01 23:20:43,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-12-01 23:20:43,928 INFO L87 Difference]: Start difference. First operand 30 states and 44 transitions. Second operand 8 states. [2020-12-01 23:20:44,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 23:20:44,815 INFO L93 Difference]: Finished difference Result 44 states and 56 transitions. [2020-12-01 23:20:44,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-01 23:20:44,816 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 11 [2020-12-01 23:20:44,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 23:20:44,817 INFO L225 Difference]: With dead ends: 44 [2020-12-01 23:20:44,817 INFO L226 Difference]: Without dead ends: 24 [2020-12-01 23:20:44,818 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2020-12-01 23:20:44,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-12-01 23:20:44,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 17. [2020-12-01 23:20:44,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-12-01 23:20:44,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2020-12-01 23:20:44,823 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 11 [2020-12-01 23:20:44,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 23:20:44,823 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2020-12-01 23:20:44,824 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-01 23:20:44,824 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2020-12-01 23:20:44,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-01 23:20:44,824 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 23:20:44,824 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 23:20:45,037 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-12-01 23:20:45,042 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 23:20:45,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 23:20:45,044 INFO L82 PathProgramCache]: Analyzing trace with hash -713684991, now seen corresponding path program 1 times [2020-12-01 23:20:45,045 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-01 23:20:45,045 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [850667268] [2020-12-01 23:20:45,046 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 [2020-12-01 23:20:45,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 23:20:45,218 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-01 23:20:45,220 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 23:20:45,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 23:20:45,333 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-01 23:20:46,878 WARN L197 SmtUtils]: Spent 493.00 ms on a formula simplification that was a NOOP. DAG size: 6 [2020-12-01 23:20:47,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 23:20:47,524 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [850667268] [2020-12-01 23:20:47,525 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-01 23:20:47,525 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2020-12-01 23:20:47,525 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324123119] [2020-12-01 23:20:47,526 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-01 23:20:47,526 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-01 23:20:47,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-01 23:20:47,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-01 23:20:47,528 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand 6 states. [2020-12-01 23:20:48,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 23:20:48,589 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2020-12-01 23:20:48,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-01 23:20:48,596 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-12-01 23:20:48,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 23:20:48,596 INFO L225 Difference]: With dead ends: 24 [2020-12-01 23:20:48,597 INFO L226 Difference]: Without dead ends: 17 [2020-12-01 23:20:48,597 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-01 23:20:48,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2020-12-01 23:20:48,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2020-12-01 23:20:48,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-12-01 23:20:48,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2020-12-01 23:20:48,601 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 14 [2020-12-01 23:20:48,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 23:20:48,602 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2020-12-01 23:20:48,602 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-01 23:20:48,602 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2020-12-01 23:20:48,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-01 23:20:48,603 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 23:20:48,603 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 23:20:48,807 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-12-01 23:20:48,808 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 23:20:48,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 23:20:48,810 INFO L82 PathProgramCache]: Analyzing trace with hash -1786240041, now seen corresponding path program 1 times [2020-12-01 23:20:48,811 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-01 23:20:48,811 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [42659935] [2020-12-01 23:20:48,812 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 [2020-12-01 23:20:49,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 23:20:49,021 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 23:20:49,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 23:20:49,159 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 23:20:49,206 INFO L173 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-12-01 23:20:49,206 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-01 23:20:49,407 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-12-01 23:20:49,446 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.12 11:20:49 BoogieIcfgContainer [2020-12-01 23:20:49,446 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-01 23:20:49,447 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-01 23:20:49,447 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-01 23:20:49,447 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-01 23:20:49,448 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 11:20:42" (3/4) ... [2020-12-01 23:20:49,450 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-01 23:20:49,529 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-12-01 23:20:49,531 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-01 23:20:49,532 INFO L168 Benchmark]: Toolchain (without parser) took 9224.36 ms. Allocated memory was 50.3 MB in the beginning and 60.8 MB in the end (delta: 10.5 MB). Free memory was 27.0 MB in the beginning and 41.9 MB in the end (delta: -14.9 MB). Peak memory consumption was 21.8 MB. Max. memory is 16.1 GB. [2020-12-01 23:20:49,534 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 39.8 MB. Free memory was 17.8 MB in the beginning and 17.7 MB in the end (delta: 70.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 23:20:49,536 INFO L168 Benchmark]: CACSL2BoogieTranslator took 428.48 ms. Allocated memory is still 50.3 MB. Free memory was 26.8 MB in the beginning and 26.4 MB in the end (delta: 430.1 kB). Peak memory consumption was 5.7 MB. Max. memory is 16.1 GB. [2020-12-01 23:20:49,537 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.54 ms. Allocated memory is still 50.3 MB. Free memory was 26.4 MB in the beginning and 24.7 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 23:20:49,538 INFO L168 Benchmark]: Boogie Preprocessor took 42.93 ms. Allocated memory is still 50.3 MB. Free memory was 24.7 MB in the beginning and 34.5 MB in the end (delta: -9.8 MB). Peak memory consumption was 7.4 MB. Max. memory is 16.1 GB. [2020-12-01 23:20:49,541 INFO L168 Benchmark]: RCFGBuilder took 2165.08 ms. Allocated memory is still 50.3 MB. Free memory was 34.5 MB in the beginning and 27.6 MB in the end (delta: 6.9 MB). Peak memory consumption was 15.8 MB. Max. memory is 16.1 GB. [2020-12-01 23:20:49,542 INFO L168 Benchmark]: TraceAbstraction took 6452.95 ms. Allocated memory was 50.3 MB in the beginning and 60.8 MB in the end (delta: 10.5 MB). Free memory was 27.4 MB in the beginning and 21.4 MB in the end (delta: 6.0 MB). Peak memory consumption was 18.1 MB. Max. memory is 16.1 GB. [2020-12-01 23:20:49,543 INFO L168 Benchmark]: Witness Printer took 84.44 ms. Allocated memory is still 60.8 MB. Free memory was 21.4 MB in the beginning and 41.9 MB in the end (delta: -20.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 23:20:49,549 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 39.8 MB. Free memory was 17.8 MB in the beginning and 17.7 MB in the end (delta: 70.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 428.48 ms. Allocated memory is still 50.3 MB. Free memory was 26.8 MB in the beginning and 26.4 MB in the end (delta: 430.1 kB). Peak memory consumption was 5.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 43.54 ms. Allocated memory is still 50.3 MB. Free memory was 26.4 MB in the beginning and 24.7 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 42.93 ms. Allocated memory is still 50.3 MB. Free memory was 24.7 MB in the beginning and 34.5 MB in the end (delta: -9.8 MB). Peak memory consumption was 7.4 MB. Max. memory is 16.1 GB. * RCFGBuilder took 2165.08 ms. Allocated memory is still 50.3 MB. Free memory was 34.5 MB in the beginning and 27.6 MB in the end (delta: 6.9 MB). Peak memory consumption was 15.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 6452.95 ms. Allocated memory was 50.3 MB in the beginning and 60.8 MB in the end (delta: 10.5 MB). Free memory was 27.4 MB in the beginning and 21.4 MB in the end (delta: 6.0 MB). Peak memory consumption was 18.1 MB. Max. memory is 16.1 GB. * Witness Printer took 84.44 ms. Allocated memory is still 60.8 MB. Free memory was 21.4 MB in the beginning and 41.9 MB in the end (delta: -20.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 98]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L19] static const double huge_ceil = 1.0e300; VAL [huge_ceil=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L93] double x = 0.0; [L22] __int32_t i0, i1, j0; [L23] __uint32_t i, j; VAL [huge_ceil=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L25] ieee_double_shape_type ew_u; [L26] ew_u.value = (x) [L27] EXPR ew_u.parts.msw [L27] (i0) = ew_u.parts.msw [L28] EXPR ew_u.parts.lsw [L28] (i1) = ew_u.parts.lsw [L30] j0 = ((i0 >> 20) & 0x7ff) - 0x3ff VAL [huge_ceil=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L31] COND TRUE j0 < 20 VAL [huge_ceil=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L32] COND TRUE j0 < 0 VAL [huge_ceil=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L33] COND TRUE huge_ceil + x > 0.0 VAL [huge_ceil=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L34] COND FALSE !(i0 < 0) VAL [huge_ceil=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L37] COND TRUE (i0 | i1) != 0 [L38] i0 = 0x3ff00000 [L39] i1 = 0 VAL [huge_ceil=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L77] ieee_double_shape_type iw_u; [L78] iw_u.parts.msw = (i0) [L79] iw_u.parts.lsw = (i1) [L80] EXPR iw_u.value [L80] (x) = iw_u.value [L82] return x; VAL [huge_ceil=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L94] double res = ceil_double(x); [L97] COND TRUE res != x VAL [huge_ceil=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L98] reach_error() VAL [huge_ceil=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 33 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 6.3s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 2.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 69 SDtfs, 119 SDslu, 21 SDs, 0 SdLazy, 25 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 68 GetRequests, 53 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 2.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred 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, 7 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.6s InterpolantComputationTime, 51 NumberOfCodeBlocks, 51 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 64 ConstructedInterpolants, 5 QuantifiedInterpolants, 3227 SizeOfPredicates, 11 NumberOfNonLiveVariables, 141 ConjunctsInSsa, 15 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...