./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/floats-cbmc-regression/float2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2880296f Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/floats-cbmc-regression/float2.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 069e404bf7b01a351383c4004538ba52022db96a ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/floats-cbmc-regression/float2.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 069e404bf7b01a351383c4004538ba52022db96a ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-2880296 [2020-12-02 14:11:23,875 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-02 14:11:23,880 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-02 14:11:23,937 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-02 14:11:23,938 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-02 14:11:23,943 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-02 14:11:23,946 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-02 14:11:23,953 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-02 14:11:23,960 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-02 14:11:23,967 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-02 14:11:23,969 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-02 14:11:23,970 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-02 14:11:23,971 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-02 14:11:23,974 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-02 14:11:23,975 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-02 14:11:23,977 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-02 14:11:23,978 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-02 14:11:23,982 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-02 14:11:23,985 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-02 14:11:23,992 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-02 14:11:23,994 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-02 14:11:23,996 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-02 14:11:23,999 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-02 14:11:24,000 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-02 14:11:24,009 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-02 14:11:24,010 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-02 14:11:24,010 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-02 14:11:24,012 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-02 14:11:24,013 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-02 14:11:24,014 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-02 14:11:24,015 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-02 14:11:24,016 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-02 14:11:24,019 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-02 14:11:24,019 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-02 14:11:24,021 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-02 14:11:24,021 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-02 14:11:24,022 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-02 14:11:24,023 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-02 14:11:24,023 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-02 14:11:24,026 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-02 14:11:24,027 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-02 14:11:24,028 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-12-02 14:11:24,097 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-02 14:11:24,097 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-02 14:11:24,099 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-02 14:11:24,099 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-02 14:11:24,100 INFO L138 SettingsManager]: * Use SBE=true [2020-12-02 14:11:24,100 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-02 14:11:24,101 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-02 14:11:24,101 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-02 14:11:24,101 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-02 14:11:24,102 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-02 14:11:24,103 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-02 14:11:24,103 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-02 14:11:24,103 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-02 14:11:24,104 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-02 14:11:24,104 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-02 14:11:24,104 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-02 14:11:24,104 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-02 14:11:24,105 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-02 14:11:24,105 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-02 14:11:24,105 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-02 14:11:24,106 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-02 14:11:24,106 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-02 14:11:24,106 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-02 14:11:24,107 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-02 14:11:24,107 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-02 14:11:24,107 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-02 14:11:24,107 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-02 14:11:24,108 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-02 14:11:24,108 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-02 14:11:24,108 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 069e404bf7b01a351383c4004538ba52022db96a [2020-12-02 14:11:24,823 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-02 14:11:24,879 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-02 14:11:24,891 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-02 14:11:24,894 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-02 14:11:24,896 INFO L275 PluginConnector]: CDTParser initialized [2020-12-02 14:11:24,897 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/floats-cbmc-regression/float2.c [2020-12-02 14:11:25,030 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c2ddb491d/dbf8bc96a9e1471ebaa0dfe37cfe9767/FLAGd9bff1496 [2020-12-02 14:11:25,702 INFO L306 CDTParser]: Found 1 translation units. [2020-12-02 14:11:25,703 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/floats-cbmc-regression/float2.c [2020-12-02 14:11:25,710 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c2ddb491d/dbf8bc96a9e1471ebaa0dfe37cfe9767/FLAGd9bff1496 [2020-12-02 14:11:26,090 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c2ddb491d/dbf8bc96a9e1471ebaa0dfe37cfe9767 [2020-12-02 14:11:26,093 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-02 14:11:26,098 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-02 14:11:26,100 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-02 14:11:26,101 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-02 14:11:26,113 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-02 14:11:26,115 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 02:11:26" (1/1) ... [2020-12-02 14:11:26,118 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74b7049c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:11:26, skipping insertion in model container [2020-12-02 14:11:26,119 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 02:11:26" (1/1) ... [2020-12-02 14:11:26,136 INFO L146 MainTranslator]: Starting translation in SV-COMP mode [2020-12-02 14:11:26,163 INFO L179 MainTranslator]: Built tables and reachable declarations [2020-12-02 14:11:26,470 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/floats-cbmc-regression/float2.c[366,379] [2020-12-02 14:11:26,481 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/floats-cbmc-regression/float2.c[420,433] [2020-12-02 14:11:26,485 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/floats-cbmc-regression/float2.c[493,506] [2020-12-02 14:11:26,490 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/floats-cbmc-regression/float2.c[557,570] [2020-12-02 14:11:26,492 INFO L211 PostProcessor]: Analyzing one entry point: main [2020-12-02 14:11:26,509 INFO L212 MainTranslator]: Completed pre-run [2020-12-02 14:11:26,534 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/floats-cbmc-regression/float2.c[366,379] [2020-12-02 14:11:26,549 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/floats-cbmc-regression/float2.c[420,433] [2020-12-02 14:11:26,552 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/floats-cbmc-regression/float2.c[493,506] [2020-12-02 14:11:26,554 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/floats-cbmc-regression/float2.c[557,570] [2020-12-02 14:11:26,555 INFO L211 PostProcessor]: Analyzing one entry point: main [2020-12-02 14:11:26,592 INFO L217 MainTranslator]: Completed translation [2020-12-02 14:11:26,592 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:11:26 WrapperNode [2020-12-02 14:11:26,593 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-02 14:11:26,594 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-02 14:11:26,594 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-02 14:11:26,595 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-02 14:11:26,611 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:11:26" (1/1) ... [2020-12-02 14:11:26,636 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:11:26" (1/1) ... [2020-12-02 14:11:26,672 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-02 14:11:26,673 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-02 14:11:26,673 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-02 14:11:26,673 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-02 14:11:26,688 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:11:26" (1/1) ... [2020-12-02 14:11:26,688 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:11:26" (1/1) ... [2020-12-02 14:11:26,697 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:11:26" (1/1) ... [2020-12-02 14:11:26,698 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:11:26" (1/1) ... [2020-12-02 14:11:26,707 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:11:26" (1/1) ... [2020-12-02 14:11:26,713 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:11:26" (1/1) ... [2020-12-02 14:11:26,714 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:11:26" (1/1) ... [2020-12-02 14:11:26,716 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-02 14:11:26,717 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-02 14:11:26,719 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-02 14:11:26,719 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-02 14:11:26,720 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:11:26" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-02 14:11:26,891 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-02 14:11:26,895 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-02 14:11:26,895 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-02 14:11:26,896 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-02 14:11:27,281 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-02 14:11:27,285 INFO L298 CfgBuilder]: Removed 4 assume(true) statements. [2020-12-02 14:11:27,290 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 02:11:27 BoogieIcfgContainer [2020-12-02 14:11:27,290 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-02 14:11:27,295 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-02 14:11:27,296 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-02 14:11:27,303 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-02 14:11:27,304 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 02:11:26" (1/3) ... [2020-12-02 14:11:27,305 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f8a2876 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 02:11:27, skipping insertion in model container [2020-12-02 14:11:27,308 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:11:26" (2/3) ... [2020-12-02 14:11:27,309 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f8a2876 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 02:11:27, skipping insertion in model container [2020-12-02 14:11:27,309 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 02:11:27" (3/3) ... [2020-12-02 14:11:27,312 INFO L111 eAbstractionObserver]: Analyzing ICFG float2.c [2020-12-02 14:11:27,354 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-02 14:11:27,358 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2020-12-02 14:11:27,392 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-12-02 14:11:27,457 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-02 14:11:27,457 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-02 14:11:27,457 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-02 14:11:27,457 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-02 14:11:27,458 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-02 14:11:27,458 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-02 14:11:27,458 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-02 14:11:27,458 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-02 14:11:27,511 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2020-12-02 14:11:27,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-12-02 14:11:27,521 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 14:11:27,525 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-12-02 14:11:27,526 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 14:11:27,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 14:11:27,537 INFO L82 PathProgramCache]: Analyzing trace with hash 925604, now seen corresponding path program 1 times [2020-12-02 14:11:27,557 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 14:11:27,558 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418472147] [2020-12-02 14:11:27,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 14:11:27,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-02 14:11:27,743 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-02 14:11:27,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-02 14:11:27,787 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-02 14:11:27,847 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-02 14:11:27,850 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-02 14:11:27,851 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-02 14:11:27,893 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 02:11:27 BoogieIcfgContainer [2020-12-02 14:11:27,894 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-02 14:11:27,895 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-02 14:11:27,896 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-02 14:11:27,896 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-02 14:11:27,897 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 02:11:27" (3/4) ... [2020-12-02 14:11:27,901 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-02 14:11:27,902 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-02 14:11:27,907 INFO L168 Benchmark]: Toolchain (without parser) took 1805.50 ms. Allocated memory is still 60.8 MB. Free memory was 37.9 MB in the beginning and 36.9 MB in the end (delta: 1.0 MB). Peak memory consumption was 2.9 MB. Max. memory is 16.1 GB. [2020-12-02 14:11:27,909 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 60.8 MB. Free memory is still 45.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-02 14:11:27,911 INFO L168 Benchmark]: CACSL2BoogieTranslator took 492.98 ms. Allocated memory is still 60.8 MB. Free memory was 37.7 MB in the beginning and 45.3 MB in the end (delta: -7.6 MB). Peak memory consumption was 14.2 MB. Max. memory is 16.1 GB. [2020-12-02 14:11:27,914 INFO L168 Benchmark]: Boogie Procedure Inliner took 77.75 ms. Allocated memory is still 60.8 MB. Free memory was 45.1 MB in the beginning and 43.9 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-02 14:11:27,916 INFO L168 Benchmark]: Boogie Preprocessor took 43.27 ms. Allocated memory is still 60.8 MB. Free memory was 43.9 MB in the beginning and 42.8 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-02 14:11:27,917 INFO L168 Benchmark]: RCFGBuilder took 573.55 ms. Allocated memory is still 60.8 MB. Free memory was 42.8 MB in the beginning and 31.5 MB in the end (delta: 11.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-12-02 14:11:27,920 INFO L168 Benchmark]: TraceAbstraction took 598.54 ms. Allocated memory is still 60.8 MB. Free memory was 31.1 MB in the beginning and 37.4 MB in the end (delta: -6.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-02 14:11:27,921 INFO L168 Benchmark]: Witness Printer took 6.37 ms. Allocated memory is still 60.8 MB. Free memory was 37.1 MB in the beginning and 36.9 MB in the end (delta: 256.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-02 14:11:27,936 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34 ms. Allocated memory is still 60.8 MB. Free memory is still 45.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 492.98 ms. Allocated memory is still 60.8 MB. Free memory was 37.7 MB in the beginning and 45.3 MB in the end (delta: -7.6 MB). Peak memory consumption was 14.2 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 77.75 ms. Allocated memory is still 60.8 MB. Free memory was 45.1 MB in the beginning and 43.9 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 43.27 ms. Allocated memory is still 60.8 MB. Free memory was 43.9 MB in the beginning and 42.8 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 573.55 ms. Allocated memory is still 60.8 MB. Free memory was 42.8 MB in the beginning and 31.5 MB in the end (delta: 11.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 598.54 ms. Allocated memory is still 60.8 MB. Free memory was 31.1 MB in the beginning and 37.4 MB in the end (delta: -6.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 6.37 ms. Allocated memory is still 60.8 MB. Free memory was 37.1 MB in the beginning and 36.9 MB in the end (delta: 256.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 12]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryDOUBLE_SMTComparisonOperation at line 12. Possible FailurePath: [L7] float a; [L8] double b; [L11] a=1.25L [L12] COND TRUE !(a==1.25) [L12] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 20 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.4s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-2880296 [2020-12-02 14:11:31,903 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-02 14:11:31,906 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-02 14:11:31,965 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-02 14:11:31,965 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-02 14:11:31,967 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-02 14:11:31,969 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-02 14:11:31,971 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-02 14:11:31,973 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-02 14:11:31,975 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-02 14:11:31,976 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-02 14:11:31,978 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-02 14:11:31,978 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-02 14:11:31,979 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-02 14:11:31,981 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-02 14:11:31,982 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-02 14:11:31,983 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-02 14:11:31,984 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-02 14:11:31,986 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-02 14:11:31,989 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-02 14:11:31,991 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-02 14:11:31,992 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-02 14:11:31,994 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-02 14:11:31,995 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-02 14:11:31,998 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-02 14:11:31,999 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-02 14:11:31,999 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-02 14:11:32,000 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-02 14:11:32,001 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-02 14:11:32,002 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-02 14:11:32,003 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-02 14:11:32,004 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-02 14:11:32,005 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-02 14:11:32,006 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-02 14:11:32,007 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-02 14:11:32,008 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-02 14:11:32,009 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-02 14:11:32,009 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-02 14:11:32,009 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-02 14:11:32,011 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-02 14:11:32,012 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-02 14:11:32,013 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-12-02 14:11:32,048 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-02 14:11:32,049 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-02 14:11:32,050 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-02 14:11:32,051 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-02 14:11:32,051 INFO L138 SettingsManager]: * Use SBE=true [2020-12-02 14:11:32,052 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-02 14:11:32,052 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-02 14:11:32,052 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-02 14:11:32,053 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-02 14:11:32,054 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-02 14:11:32,054 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-02 14:11:32,057 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-02 14:11:32,057 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-12-02 14:11:32,058 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-12-02 14:11:32,058 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-02 14:11:32,058 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-02 14:11:32,059 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-02 14:11:32,059 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-02 14:11:32,062 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-02 14:11:32,062 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-02 14:11:32,063 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-02 14:11:32,063 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-02 14:11:32,063 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-02 14:11:32,064 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-02 14:11:32,064 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-02 14:11:32,064 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-02 14:11:32,065 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-12-02 14:11:32,066 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-12-02 14:11:32,067 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-02 14:11:32,067 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-02 14:11:32,067 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-02 14:11:32,069 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 069e404bf7b01a351383c4004538ba52022db96a [2020-12-02 14:11:32,918 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-02 14:11:32,998 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-02 14:11:33,002 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-02 14:11:33,008 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-02 14:11:33,011 INFO L275 PluginConnector]: CDTParser initialized [2020-12-02 14:11:33,012 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/floats-cbmc-regression/float2.c [2020-12-02 14:11:33,147 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7027cd12a/1249086831574d52be25541263c2ea13/FLAG3d3bbca8c [2020-12-02 14:11:33,859 INFO L306 CDTParser]: Found 1 translation units. [2020-12-02 14:11:33,862 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/floats-cbmc-regression/float2.c [2020-12-02 14:11:33,877 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7027cd12a/1249086831574d52be25541263c2ea13/FLAG3d3bbca8c [2020-12-02 14:11:34,209 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7027cd12a/1249086831574d52be25541263c2ea13 [2020-12-02 14:11:34,218 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-02 14:11:34,230 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-02 14:11:34,233 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-02 14:11:34,240 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-02 14:11:34,247 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-02 14:11:34,258 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 02:11:34" (1/1) ... [2020-12-02 14:11:34,272 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35649923 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:11:34, skipping insertion in model container [2020-12-02 14:11:34,272 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 02:11:34" (1/1) ... [2020-12-02 14:11:34,297 INFO L146 MainTranslator]: Starting translation in SV-COMP mode [2020-12-02 14:11:34,333 INFO L179 MainTranslator]: Built tables and reachable declarations [2020-12-02 14:11:34,620 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/floats-cbmc-regression/float2.c[366,379] [2020-12-02 14:11:34,632 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/floats-cbmc-regression/float2.c[420,433] [2020-12-02 14:11:34,634 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/floats-cbmc-regression/float2.c[493,506] [2020-12-02 14:11:34,637 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/floats-cbmc-regression/float2.c[557,570] [2020-12-02 14:11:34,641 INFO L211 PostProcessor]: Analyzing one entry point: main [2020-12-02 14:11:34,672 INFO L212 MainTranslator]: Completed pre-run [2020-12-02 14:11:34,688 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/floats-cbmc-regression/float2.c[366,379] [2020-12-02 14:11:34,690 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/floats-cbmc-regression/float2.c[420,433] [2020-12-02 14:11:34,693 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/floats-cbmc-regression/float2.c[493,506] [2020-12-02 14:11:34,697 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/floats-cbmc-regression/float2.c[557,570] [2020-12-02 14:11:34,706 INFO L211 PostProcessor]: Analyzing one entry point: main [2020-12-02 14:11:34,736 INFO L217 MainTranslator]: Completed translation [2020-12-02 14:11:34,737 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:11:34 WrapperNode [2020-12-02 14:11:34,737 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-02 14:11:34,740 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-02 14:11:34,740 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-02 14:11:34,740 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-02 14:11:34,749 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:11:34" (1/1) ... [2020-12-02 14:11:34,777 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:11:34" (1/1) ... [2020-12-02 14:11:34,807 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-02 14:11:34,809 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-02 14:11:34,809 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-02 14:11:34,809 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-02 14:11:34,828 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:11:34" (1/1) ... [2020-12-02 14:11:34,830 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:11:34" (1/1) ... [2020-12-02 14:11:34,835 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:11:34" (1/1) ... [2020-12-02 14:11:34,835 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:11:34" (1/1) ... [2020-12-02 14:11:34,852 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:11:34" (1/1) ... [2020-12-02 14:11:34,854 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:11:34" (1/1) ... [2020-12-02 14:11:34,859 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:11:34" (1/1) ... [2020-12-02 14:11:34,866 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-02 14:11:34,867 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-02 14:11:34,867 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-02 14:11:34,867 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-02 14:11:34,882 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:11:34" (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 [2020-12-02 14:11:35,049 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.float_to_bitvec_DOUBLE [2020-12-02 14:11:35,049 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.float_to_bitvec_LONGDOUBLE [2020-12-02 14:11:35,050 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-12-02 14:11:35,050 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-02 14:11:35,050 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-02 14:11:35,050 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-02 14:11:35,051 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.float_to_bitvec_FLOAT [2020-12-02 14:11:35,686 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-02 14:11:35,687 INFO L298 CfgBuilder]: Removed 4 assume(true) statements. [2020-12-02 14:11:35,688 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 02:11:35 BoogieIcfgContainer [2020-12-02 14:11:35,691 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-02 14:11:35,693 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-02 14:11:35,696 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-02 14:11:35,700 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-02 14:11:35,703 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 02:11:34" (1/3) ... [2020-12-02 14:11:35,705 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d70a5b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 02:11:35, skipping insertion in model container [2020-12-02 14:11:35,705 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:11:34" (2/3) ... [2020-12-02 14:11:35,705 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d70a5b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 02:11:35, skipping insertion in model container [2020-12-02 14:11:35,708 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 02:11:35" (3/3) ... [2020-12-02 14:11:35,711 INFO L111 eAbstractionObserver]: Analyzing ICFG float2.c [2020-12-02 14:11:35,741 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-02 14:11:35,745 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2020-12-02 14:11:35,759 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-12-02 14:11:35,787 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-02 14:11:35,788 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-02 14:11:35,788 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-02 14:11:35,788 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-02 14:11:35,788 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-02 14:11:35,788 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-02 14:11:35,789 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-02 14:11:35,789 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-02 14:11:35,805 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2020-12-02 14:11:35,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-12-02 14:11:35,812 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 14:11:35,813 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-12-02 14:11:35,813 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 14:11:35,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 14:11:35,829 INFO L82 PathProgramCache]: Analyzing trace with hash 925604, now seen corresponding path program 1 times [2020-12-02 14:11:35,882 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-02 14:11:35,883 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1596969261] [2020-12-02 14:11:35,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-12-02 14:11:36,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 14:11:36,170 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-02 14:11:36,178 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-02 14:11:37,903 WARN L197 SmtUtils]: Spent 1.39 s on a formula simplification that was a NOOP. DAG size: 28 [2020-12-02 14:11:37,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 14:11:37,916 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-02 14:11:39,711 WARN L197 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2020-12-02 14:11:40,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 14:11:40,277 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1596969261] [2020-12-02 14:11:40,278 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-02 14:11:40,278 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2020-12-02 14:11:40,279 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607920571] [2020-12-02 14:11:40,287 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-02 14:11:40,288 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-02 14:11:40,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-02 14:11:40,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-02 14:11:40,331 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 5 states. [2020-12-02 14:11:42,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 14:11:42,570 INFO L93 Difference]: Finished difference Result 35 states and 40 transitions. [2020-12-02 14:11:42,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-02 14:11:42,577 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 4 [2020-12-02 14:11:42,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 14:11:42,589 INFO L225 Difference]: With dead ends: 35 [2020-12-02 14:11:42,590 INFO L226 Difference]: Without dead ends: 15 [2020-12-02 14:11:42,600 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-02 14:11:42,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2020-12-02 14:11:42,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2020-12-02 14:11:42,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-12-02 14:11:42,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 14 transitions. [2020-12-02 14:11:42,649 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 14 transitions. Word has length 4 [2020-12-02 14:11:42,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 14:11:42,650 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 14 transitions. [2020-12-02 14:11:42,651 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-02 14:11:42,651 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 14 transitions. [2020-12-02 14:11:42,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-02 14:11:42,652 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 14:11:42,652 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-02 14:11:42,871 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-12-02 14:11:42,887 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 14:11:42,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 14:11:42,895 INFO L82 PathProgramCache]: Analyzing trace with hash 889629862, now seen corresponding path program 1 times [2020-12-02 14:11:42,902 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-02 14:11:42,903 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1387018858] [2020-12-02 14:11:42,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-12-02 14:11:43,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 14:11:43,168 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-02 14:11:43,172 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-02 14:11:43,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 14:11:43,228 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-02 14:11:43,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 14:11:43,286 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1387018858] [2020-12-02 14:11:43,287 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-02 14:11:43,290 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-12-02 14:11:43,290 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347495718] [2020-12-02 14:11:43,295 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-02 14:11:43,295 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-02 14:11:43,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-02 14:11:43,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-02 14:11:43,301 INFO L87 Difference]: Start difference. First operand 15 states and 14 transitions. Second operand 4 states. [2020-12-02 14:11:43,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 14:11:43,325 INFO L93 Difference]: Finished difference Result 15 states and 14 transitions. [2020-12-02 14:11:43,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-02 14:11:43,329 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2020-12-02 14:11:43,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 14:11:43,330 INFO L225 Difference]: With dead ends: 15 [2020-12-02 14:11:43,330 INFO L226 Difference]: Without dead ends: 13 [2020-12-02 14:11:43,338 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-02 14:11:43,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2020-12-02 14:11:43,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2020-12-02 14:11:43,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-12-02 14:11:43,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 12 transitions. [2020-12-02 14:11:43,342 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 12 transitions. Word has length 6 [2020-12-02 14:11:43,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 14:11:43,343 INFO L481 AbstractCegarLoop]: Abstraction has 13 states and 12 transitions. [2020-12-02 14:11:43,343 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-02 14:11:43,343 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 12 transitions. [2020-12-02 14:11:43,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-02 14:11:43,346 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 14:11:43,347 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 14:11:43,548 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-12-02 14:11:43,549 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 14:11:43,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 14:11:43,550 INFO L82 PathProgramCache]: Analyzing trace with hash 235930184, now seen corresponding path program 1 times [2020-12-02 14:11:43,550 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-02 14:11:43,551 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [316975785] [2020-12-02 14:11:43,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-12-02 14:11:43,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 14:11:43,785 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-02 14:11:43,788 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-02 14:11:44,914 WARN L197 SmtUtils]: Spent 834.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-12-02 14:11:44,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 14:11:44,935 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-02 14:11:45,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 14:11:45,356 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [316975785] [2020-12-02 14:11:45,356 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-02 14:11:45,357 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2020-12-02 14:11:45,357 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140106531] [2020-12-02 14:11:45,358 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-02 14:11:45,359 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-02 14:11:45,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-02 14:11:45,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-02 14:11:45,360 INFO L87 Difference]: Start difference. First operand 13 states and 12 transitions. Second operand 5 states. [2020-12-02 14:11:50,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 14:11:50,554 INFO L93 Difference]: Finished difference Result 13 states and 12 transitions. [2020-12-02 14:11:50,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-02 14:11:50,555 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2020-12-02 14:11:50,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 14:11:50,556 INFO L225 Difference]: With dead ends: 13 [2020-12-02 14:11:50,556 INFO L226 Difference]: Without dead ends: 11 [2020-12-02 14:11:50,557 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-02 14:11:50,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2020-12-02 14:11:50,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2020-12-02 14:11:50,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-12-02 14:11:50,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 10 transitions. [2020-12-02 14:11:50,560 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 10 transitions. Word has length 8 [2020-12-02 14:11:50,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 14:11:50,561 INFO L481 AbstractCegarLoop]: Abstraction has 11 states and 10 transitions. [2020-12-02 14:11:50,561 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-02 14:11:50,561 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 10 transitions. [2020-12-02 14:11:50,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-02 14:11:50,562 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 14:11:50,562 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 14:11:50,771 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-12-02 14:11:50,778 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 14:11:50,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 14:11:50,784 INFO L82 PathProgramCache]: Analyzing trace with hash -904234870, now seen corresponding path program 1 times [2020-12-02 14:11:50,784 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-02 14:11:50,785 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [869302472] [2020-12-02 14:11:50,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2020-12-02 14:11:51,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 14:11:51,243 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-02 14:11:51,244 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-02 14:11:52,097 WARN L197 SmtUtils]: Spent 526.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-12-02 14:11:52,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 14:11:52,104 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-02 14:11:52,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 14:11:52,257 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [869302472] [2020-12-02 14:11:52,257 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-02 14:11:52,258 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2020-12-02 14:11:52,258 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336887425] [2020-12-02 14:11:52,258 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-02 14:11:52,259 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-02 14:11:52,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-02 14:11:52,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-02 14:11:52,260 INFO L87 Difference]: Start difference. First operand 11 states and 10 transitions. Second operand 5 states. [2020-12-02 14:11:55,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 14:11:55,930 INFO L93 Difference]: Finished difference Result 11 states and 10 transitions. [2020-12-02 14:11:55,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-02 14:11:55,931 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-12-02 14:11:55,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 14:11:55,932 INFO L225 Difference]: With dead ends: 11 [2020-12-02 14:11:55,932 INFO L226 Difference]: Without dead ends: 0 [2020-12-02 14:11:55,933 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-02 14:11:55,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-02 14:11:55,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-02 14:11:55,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-02 14:11:55,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-02 14:11:55,934 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2020-12-02 14:11:55,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 14:11:55,934 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-02 14:11:55,934 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-02 14:11:55,934 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-02 14:11:55,934 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-02 14:11:56,136 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-12-02 14:11:56,142 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-02 14:11:56,146 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-02 14:11:56,146 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 15) no Hoare annotation was computed. [2020-12-02 14:11:56,146 INFO L262 CegarLoopResult]: For program point L23(line 23) no Hoare annotation was computed. [2020-12-02 14:11:56,147 INFO L262 CegarLoopResult]: For program point L23-1(line 23) no Hoare annotation was computed. [2020-12-02 14:11:56,166 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 23) no Hoare annotation was computed. [2020-12-02 14:11:56,167 INFO L262 CegarLoopResult]: For program point L19(line 19) no Hoare annotation was computed. [2020-12-02 14:11:56,167 INFO L262 CegarLoopResult]: For program point L19-1(line 19) no Hoare annotation was computed. [2020-12-02 14:11:56,167 INFO L262 CegarLoopResult]: For program point L19-3(line 19) no Hoare annotation was computed. [2020-12-02 14:11:56,167 INFO L262 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-12-02 14:11:56,168 INFO L262 CegarLoopResult]: For program point L15-1(line 15) no Hoare annotation was computed. [2020-12-02 14:11:56,168 INFO L262 CegarLoopResult]: For program point L15-3(line 15) no Hoare annotation was computed. [2020-12-02 14:11:56,168 INFO L262 CegarLoopResult]: For program point L5(lines 5 24) no Hoare annotation was computed. [2020-12-02 14:11:56,168 INFO L262 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-12-02 14:11:56,171 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-02 14:11:56,171 INFO L262 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-12-02 14:11:56,171 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-12-02 14:11:56,172 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2020-12-02 14:11:56,172 INFO L262 CegarLoopResult]: For program point L12(line 12) no Hoare annotation was computed. [2020-12-02 14:11:56,172 INFO L262 CegarLoopResult]: For program point L12-1(line 12) no Hoare annotation was computed. [2020-12-02 14:11:56,172 INFO L262 CegarLoopResult]: For program point L12-3(line 12) no Hoare annotation was computed. [2020-12-02 14:11:56,205 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 02:11:56 BoogieIcfgContainer [2020-12-02 14:11:56,205 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-02 14:11:56,206 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-02 14:11:56,206 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-02 14:11:56,207 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-02 14:11:56,211 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 02:11:35" (3/4) ... [2020-12-02 14:11:56,217 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-02 14:11:56,260 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2020-12-02 14:11:56,260 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-02 14:11:56,262 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-12-02 14:11:56,263 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-02 14:11:56,384 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-12-02 14:11:56,389 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-02 14:11:56,392 INFO L168 Benchmark]: Toolchain (without parser) took 22163.52 ms. Allocated memory was 44.0 MB in the beginning and 71.3 MB in the end (delta: 27.3 MB). Free memory was 21.1 MB in the beginning and 51.5 MB in the end (delta: -30.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-02 14:11:56,393 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 44.0 MB. Free memory was 28.1 MB in the beginning and 28.0 MB in the end (delta: 42.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-02 14:11:56,394 INFO L168 Benchmark]: CACSL2BoogieTranslator took 504.74 ms. Allocated memory is still 44.0 MB. Free memory was 21.0 MB in the beginning and 21.7 MB in the end (delta: -734.2 kB). Peak memory consumption was 7.6 MB. Max. memory is 16.1 GB. [2020-12-02 14:11:56,395 INFO L168 Benchmark]: Boogie Procedure Inliner took 68.20 ms. Allocated memory is still 44.0 MB. Free memory was 21.7 MB in the beginning and 20.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-02 14:11:56,395 INFO L168 Benchmark]: Boogie Preprocessor took 57.37 ms. Allocated memory is still 44.0 MB. Free memory was 20.1 MB in the beginning and 19.0 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-02 14:11:56,396 INFO L168 Benchmark]: RCFGBuilder took 824.03 ms. Allocated memory was 44.0 MB in the beginning and 58.7 MB in the end (delta: 14.7 MB). Free memory was 18.9 MB in the beginning and 29.6 MB in the end (delta: -10.8 MB). Peak memory consumption was 4.9 MB. Max. memory is 16.1 GB. [2020-12-02 14:11:56,400 INFO L168 Benchmark]: TraceAbstraction took 20512.61 ms. Allocated memory was 58.7 MB in the beginning and 71.3 MB in the end (delta: 12.6 MB). Free memory was 29.2 MB in the beginning and 53.6 MB in the end (delta: -24.4 MB). Peak memory consumption was 14.1 MB. Max. memory is 16.1 GB. [2020-12-02 14:11:56,400 INFO L168 Benchmark]: Witness Printer took 183.65 ms. Allocated memory is still 71.3 MB. Free memory was 53.6 MB in the beginning and 51.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-02 14:11:56,406 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 44.0 MB. Free memory was 28.1 MB in the beginning and 28.0 MB in the end (delta: 42.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 504.74 ms. Allocated memory is still 44.0 MB. Free memory was 21.0 MB in the beginning and 21.7 MB in the end (delta: -734.2 kB). Peak memory consumption was 7.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 68.20 ms. Allocated memory is still 44.0 MB. Free memory was 21.7 MB in the beginning and 20.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 57.37 ms. Allocated memory is still 44.0 MB. Free memory was 20.1 MB in the beginning and 19.0 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 824.03 ms. Allocated memory was 44.0 MB in the beginning and 58.7 MB in the end (delta: 14.7 MB). Free memory was 18.9 MB in the beginning and 29.6 MB in the end (delta: -10.8 MB). Peak memory consumption was 4.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 20512.61 ms. Allocated memory was 58.7 MB in the beginning and 71.3 MB in the end (delta: 12.6 MB). Free memory was 29.2 MB in the beginning and 53.6 MB in the end (delta: -24.4 MB). Peak memory consumption was 14.1 MB. Max. memory is 16.1 GB. * Witness Printer took 183.65 ms. Allocated memory is still 71.3 MB. Free memory was 53.6 MB in the beginning and 51.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 15]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 23]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 12]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 20 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 20.3s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 11.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 24 SDtfs, 21 SDslu, 29 SDs, 0 SdLazy, 65 SolverSat, 2 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 10.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 48 GetRequests, 34 SyntacticMatches, 3 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 6.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred 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, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 0 LocationsWithAnnotation, 0 PreInvPairs, 0 NumberOfFragments, 0 HoareAnnotationTreeSize, 0 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 0 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 6.8s InterpolantComputationTime, 28 NumberOfCodeBlocks, 28 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 48 ConstructedInterpolants, 4 QuantifiedInterpolants, 1583 SizeOfPredicates, 9 NumberOfNonLiveVariables, 126 ConjunctsInSsa, 16 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...