./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/floats-cbmc-regression/float-no-simp6.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/float-no-simp6.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 6a5ffd33a79ac0f158a6e6ff96de12eae93b56cb ......................................................................................................................................................................................................................................... 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/float-no-simp6.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 6a5ffd33a79ac0f158a6e6ff96de12eae93b56cb ................................................................................................................................................................................................................................................................................................................................................................................................. 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 14:09:54,882 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-02 14:09:54,885 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-02 14:09:54,932 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-02 14:09:54,933 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-02 14:09:54,938 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-02 14:09:54,941 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-02 14:09:54,947 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-02 14:09:54,951 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-02 14:09:54,959 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-02 14:09:54,960 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-02 14:09:54,961 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-02 14:09:54,961 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-02 14:09:54,963 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-02 14:09:54,964 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-02 14:09:54,965 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-02 14:09:54,966 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-02 14:09:54,967 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-02 14:09:54,969 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-02 14:09:54,971 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-02 14:09:54,972 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-02 14:09:54,977 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-02 14:09:54,978 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-02 14:09:54,979 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-02 14:09:54,982 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-02 14:09:54,983 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-02 14:09:54,983 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-02 14:09:54,984 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-02 14:09:54,985 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-02 14:09:54,986 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-02 14:09:54,986 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-02 14:09:54,987 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-02 14:09:54,988 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-02 14:09:54,989 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-02 14:09:54,990 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-02 14:09:54,991 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-02 14:09:54,992 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-02 14:09:54,992 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-02 14:09:54,992 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-02 14:09:54,993 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-02 14:09:54,994 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-02 14:09:54,999 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-12-02 14:09:55,025 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-02 14:09:55,032 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-02 14:09:55,034 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-02 14:09:55,034 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-02 14:09:55,035 INFO L138 SettingsManager]: * Use SBE=true [2020-12-02 14:09:55,035 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-02 14:09:55,035 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-02 14:09:55,036 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-02 14:09:55,036 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-02 14:09:55,036 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-02 14:09:55,036 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-02 14:09:55,037 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-02 14:09:55,037 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-02 14:09:55,037 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-02 14:09:55,037 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-02 14:09:55,038 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-02 14:09:55,038 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-02 14:09:55,038 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-02 14:09:55,039 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-02 14:09:55,039 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-02 14:09:55,039 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-02 14:09:55,040 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-02 14:09:55,040 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-02 14:09:55,040 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-02 14:09:55,040 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-02 14:09:55,041 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-02 14:09:55,041 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-02 14:09:55,041 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-02 14:09:55,041 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-02 14:09:55,042 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6a5ffd33a79ac0f158a6e6ff96de12eae93b56cb [2020-12-02 14:09:55,468 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-02 14:09:55,498 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-02 14:09:55,502 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-02 14:09:55,503 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-02 14:09:55,504 INFO L275 PluginConnector]: CDTParser initialized [2020-12-02 14:09:55,505 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/floats-cbmc-regression/float-no-simp6.c [2020-12-02 14:09:55,587 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4effe301d/c55ef81823f644b4a949f7dec31efd42/FLAG5c551a24c [2020-12-02 14:09:56,196 INFO L306 CDTParser]: Found 1 translation units. [2020-12-02 14:09:56,196 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/floats-cbmc-regression/float-no-simp6.c [2020-12-02 14:09:56,204 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4effe301d/c55ef81823f644b4a949f7dec31efd42/FLAG5c551a24c [2020-12-02 14:09:56,580 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4effe301d/c55ef81823f644b4a949f7dec31efd42 [2020-12-02 14:09:56,583 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-02 14:09:56,585 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-02 14:09:56,587 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-02 14:09:56,587 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-02 14:09:56,593 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-02 14:09:56,594 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 02:09:56" (1/1) ... [2020-12-02 14:09:56,598 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b0fee24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:09:56, skipping insertion in model container [2020-12-02 14:09:56,598 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 02:09:56" (1/1) ... [2020-12-02 14:09:56,606 INFO L146 MainTranslator]: Starting translation in SV-COMP mode [2020-12-02 14:09:56,628 INFO L179 MainTranslator]: Built tables and reachable declarations [2020-12-02 14:09:56,839 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/float-no-simp6.c[1010,1023] [2020-12-02 14:09:56,861 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/float-no-simp6.c[1167,1180] [2020-12-02 14:09:56,871 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/float-no-simp6.c[1293,1306] [2020-12-02 14:09:56,873 INFO L211 PostProcessor]: Analyzing one entry point: main [2020-12-02 14:09:56,886 INFO L212 MainTranslator]: Completed pre-run [2020-12-02 14:09:56,907 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/float-no-simp6.c[1010,1023] [2020-12-02 14:09:56,914 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/float-no-simp6.c[1167,1180] [2020-12-02 14:09:56,918 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/float-no-simp6.c[1293,1306] [2020-12-02 14:09:56,921 INFO L211 PostProcessor]: Analyzing one entry point: main [2020-12-02 14:09:56,942 INFO L217 MainTranslator]: Completed translation [2020-12-02 14:09:56,943 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:09:56 WrapperNode [2020-12-02 14:09:56,943 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-02 14:09:56,945 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-02 14:09:56,945 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-02 14:09:56,946 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-02 14:09:56,955 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:09:56" (1/1) ... [2020-12-02 14:09:56,964 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:09:56" (1/1) ... [2020-12-02 14:09:56,995 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-02 14:09:56,997 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-02 14:09:56,997 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-02 14:09:56,997 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-02 14:09:57,007 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:09:56" (1/1) ... [2020-12-02 14:09:57,007 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:09:56" (1/1) ... [2020-12-02 14:09:57,010 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:09:56" (1/1) ... [2020-12-02 14:09:57,010 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:09:56" (1/1) ... [2020-12-02 14:09:57,018 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:09:56" (1/1) ... [2020-12-02 14:09:57,021 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:09:56" (1/1) ... [2020-12-02 14:09:57,027 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:09:56" (1/1) ... [2020-12-02 14:09:57,029 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-02 14:09:57,031 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-02 14:09:57,032 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-02 14:09:57,032 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-02 14:09:57,033 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:09:56" (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 14:09:57,139 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-02 14:09:57,139 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-02 14:09:57,139 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-02 14:09:57,140 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-02 14:09:57,375 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-02 14:09:57,379 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-12-02 14:09:57,384 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 02:09:57 BoogieIcfgContainer [2020-12-02 14:09:57,385 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-02 14:09:57,387 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-02 14:09:57,387 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-02 14:09:57,397 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-02 14:09:57,400 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 02:09:56" (1/3) ... [2020-12-02 14:09:57,402 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@704bc650 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 02:09:57, skipping insertion in model container [2020-12-02 14:09:57,405 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:09:56" (2/3) ... [2020-12-02 14:09:57,406 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@704bc650 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 02:09:57, skipping insertion in model container [2020-12-02 14:09:57,406 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 02:09:57" (3/3) ... [2020-12-02 14:09:57,408 INFO L111 eAbstractionObserver]: Analyzing ICFG float-no-simp6.c [2020-12-02 14:09:57,450 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-02 14:09:57,457 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-12-02 14:09:57,485 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-12-02 14:09:57,528 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-02 14:09:57,528 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-02 14:09:57,529 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-02 14:09:57,529 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-02 14:09:57,529 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-02 14:09:57,529 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-02 14:09:57,529 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-02 14:09:57,530 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-02 14:09:57,546 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2020-12-02 14:09:57,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-12-02 14:09:57,552 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 14:09:57,553 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-12-02 14:09:57,554 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 14:09:57,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 14:09:57,560 INFO L82 PathProgramCache]: Analyzing trace with hash 925604, now seen corresponding path program 1 times [2020-12-02 14:09:57,572 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 14:09:57,573 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762549559] [2020-12-02 14:09:57,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 14:09:57,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-02 14:09:57,690 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-02 14:09:57,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-02 14:09:57,710 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-02 14:09:57,734 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-02 14:09:57,735 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-02 14:09:57,736 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-02 14:09:57,759 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 02:09:57 BoogieIcfgContainer [2020-12-02 14:09:57,759 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-02 14:09:57,760 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-02 14:09:57,760 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-02 14:09:57,760 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-02 14:09:57,761 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 02:09:57" (3/4) ... [2020-12-02 14:09:57,765 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-02 14:09:57,765 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-02 14:09:57,768 INFO L168 Benchmark]: Toolchain (without parser) took 1181.83 ms. Allocated memory was 44.0 MB in the beginning and 54.5 MB in the end (delta: 10.5 MB). Free memory was 21.3 MB in the beginning and 29.1 MB in the end (delta: -7.8 MB). Peak memory consumption was 4.9 MB. Max. memory is 16.1 GB. [2020-12-02 14:09:57,769 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 44.0 MB. Free memory was 31.0 MB in the beginning and 31.0 MB in the end (delta: 31.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-02 14:09:57,771 INFO L168 Benchmark]: CACSL2BoogieTranslator took 356.47 ms. Allocated memory is still 44.0 MB. Free memory was 21.1 MB in the beginning and 20.6 MB in the end (delta: 454.1 kB). Peak memory consumption was 7.7 MB. Max. memory is 16.1 GB. [2020-12-02 14:09:57,772 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.62 ms. Allocated memory was 44.0 MB in the beginning and 54.5 MB in the end (delta: 10.5 MB). Free memory was 20.6 MB in the beginning and 39.7 MB in the end (delta: -19.1 MB). Peak memory consumption was 2.5 MB. Max. memory is 16.1 GB. [2020-12-02 14:09:57,773 INFO L168 Benchmark]: Boogie Preprocessor took 33.22 ms. Allocated memory is still 54.5 MB. Free memory was 39.7 MB in the beginning and 38.8 MB in the end (delta: 924.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-02 14:09:57,773 INFO L168 Benchmark]: RCFGBuilder took 353.70 ms. Allocated memory is still 54.5 MB. Free memory was 38.8 MB in the beginning and 27.7 MB in the end (delta: 11.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-12-02 14:09:57,774 INFO L168 Benchmark]: TraceAbstraction took 372.55 ms. Allocated memory is still 54.5 MB. Free memory was 27.3 MB in the beginning and 29.6 MB in the end (delta: -2.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-02 14:09:57,775 INFO L168 Benchmark]: Witness Printer took 5.67 ms. Allocated memory is still 54.5 MB. Free memory was 29.3 MB in the beginning and 29.1 MB in the end (delta: 268.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-02 14:09:57,780 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 44.0 MB. Free memory was 31.0 MB in the beginning and 31.0 MB in the end (delta: 31.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 356.47 ms. Allocated memory is still 44.0 MB. Free memory was 21.1 MB in the beginning and 20.6 MB in the end (delta: 454.1 kB). Peak memory consumption was 7.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 50.62 ms. Allocated memory was 44.0 MB in the beginning and 54.5 MB in the end (delta: 10.5 MB). Free memory was 20.6 MB in the beginning and 39.7 MB in the end (delta: -19.1 MB). Peak memory consumption was 2.5 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 33.22 ms. Allocated memory is still 54.5 MB. Free memory was 39.7 MB in the beginning and 38.8 MB in the end (delta: 924.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 353.70 ms. Allocated memory is still 54.5 MB. Free memory was 38.8 MB in the beginning and 27.7 MB in the end (delta: 11.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 372.55 ms. Allocated memory is still 54.5 MB. Free memory was 27.3 MB in the beginning and 29.6 MB in the end (delta: -2.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 5.67 ms. Allocated memory is still 54.5 MB. Free memory was 29.3 MB in the beginning and 29.1 MB in the end (delta: 268.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 25]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryArithmeticFLOAT_SMToperation at line 23, overapproximation of someBinaryFLOAT_SMTComparisonOperation at line 25. Possible FailurePath: [L20] float f1=0x1.000000p-1f; [L21] float f2=0x1.fffffep-126f; [L23] float res = f1 * f2; [L25] COND TRUE !(res == 0x1.0p-126f) [L25] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 16 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=16occurred 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 14:10:00,278 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-02 14:10:00,281 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-02 14:10:00,328 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-02 14:10:00,329 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-02 14:10:00,334 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-02 14:10:00,337 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-02 14:10:00,343 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-02 14:10:00,347 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-02 14:10:00,353 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-02 14:10:00,355 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-02 14:10:00,361 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-02 14:10:00,361 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-02 14:10:00,364 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-02 14:10:00,366 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-02 14:10:00,368 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-02 14:10:00,370 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-02 14:10:00,374 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-02 14:10:00,376 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-02 14:10:00,384 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-02 14:10:00,386 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-02 14:10:00,387 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-02 14:10:00,389 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-02 14:10:00,391 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-02 14:10:00,397 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-02 14:10:00,399 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-02 14:10:00,400 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-02 14:10:00,401 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-02 14:10:00,402 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-02 14:10:00,403 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-02 14:10:00,404 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-02 14:10:00,405 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-02 14:10:00,407 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-02 14:10:00,408 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-02 14:10:00,409 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-02 14:10:00,410 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-02 14:10:00,410 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-02 14:10:00,411 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-02 14:10:00,411 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-02 14:10:00,413 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-02 14:10:00,416 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-02 14:10:00,417 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-12-02 14:10:00,472 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-02 14:10:00,472 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-02 14:10:00,474 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-02 14:10:00,474 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-02 14:10:00,475 INFO L138 SettingsManager]: * Use SBE=true [2020-12-02 14:10:00,475 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-02 14:10:00,475 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-02 14:10:00,475 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-02 14:10:00,476 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-02 14:10:00,476 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-02 14:10:00,476 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-02 14:10:00,477 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-02 14:10:00,477 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-12-02 14:10:00,477 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-12-02 14:10:00,477 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-02 14:10:00,478 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-02 14:10:00,478 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-02 14:10:00,478 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-02 14:10:00,478 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-02 14:10:00,479 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-02 14:10:00,479 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-02 14:10:00,479 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-02 14:10:00,479 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-02 14:10:00,480 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-02 14:10:00,480 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-02 14:10:00,480 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-02 14:10:00,481 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-12-02 14:10:00,481 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-12-02 14:10:00,481 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-02 14:10:00,481 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-02 14:10:00,482 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-02 14:10:00,482 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6a5ffd33a79ac0f158a6e6ff96de12eae93b56cb [2020-12-02 14:10:00,840 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-02 14:10:00,875 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-02 14:10:00,879 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-02 14:10:00,881 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-02 14:10:00,882 INFO L275 PluginConnector]: CDTParser initialized [2020-12-02 14:10:00,883 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/floats-cbmc-regression/float-no-simp6.c [2020-12-02 14:10:00,960 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/872088fe0/098a45d647194859bda72169c1c3dd4f/FLAGa6c38fe36 [2020-12-02 14:10:01,555 INFO L306 CDTParser]: Found 1 translation units. [2020-12-02 14:10:01,556 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/floats-cbmc-regression/float-no-simp6.c [2020-12-02 14:10:01,563 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/872088fe0/098a45d647194859bda72169c1c3dd4f/FLAGa6c38fe36 [2020-12-02 14:10:01,944 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/872088fe0/098a45d647194859bda72169c1c3dd4f [2020-12-02 14:10:01,948 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-02 14:10:01,950 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-02 14:10:01,952 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-02 14:10:01,953 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-02 14:10:01,957 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-02 14:10:01,959 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 02:10:01" (1/1) ... [2020-12-02 14:10:01,967 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3bbbaee3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:10:01, skipping insertion in model container [2020-12-02 14:10:01,968 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 02:10:01" (1/1) ... [2020-12-02 14:10:01,978 INFO L146 MainTranslator]: Starting translation in SV-COMP mode [2020-12-02 14:10:01,997 INFO L179 MainTranslator]: Built tables and reachable declarations [2020-12-02 14:10:02,253 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/float-no-simp6.c[1010,1023] [2020-12-02 14:10:02,269 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/float-no-simp6.c[1167,1180] [2020-12-02 14:10:02,276 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/float-no-simp6.c[1293,1306] [2020-12-02 14:10:02,278 INFO L211 PostProcessor]: Analyzing one entry point: main [2020-12-02 14:10:02,296 INFO L212 MainTranslator]: Completed pre-run [2020-12-02 14:10:02,316 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/float-no-simp6.c[1010,1023] [2020-12-02 14:10:02,324 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/float-no-simp6.c[1167,1180] [2020-12-02 14:10:02,328 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/float-no-simp6.c[1293,1306] [2020-12-02 14:10:02,331 INFO L211 PostProcessor]: Analyzing one entry point: main [2020-12-02 14:10:02,357 INFO L217 MainTranslator]: Completed translation [2020-12-02 14:10:02,358 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:10:02 WrapperNode [2020-12-02 14:10:02,358 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-02 14:10:02,359 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-02 14:10:02,359 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-02 14:10:02,360 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-02 14:10:02,368 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:10:02" (1/1) ... [2020-12-02 14:10:02,379 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:10:02" (1/1) ... [2020-12-02 14:10:02,400 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-02 14:10:02,401 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-02 14:10:02,401 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-02 14:10:02,402 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-02 14:10:02,411 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:10:02" (1/1) ... [2020-12-02 14:10:02,411 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:10:02" (1/1) ... [2020-12-02 14:10:02,415 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:10:02" (1/1) ... [2020-12-02 14:10:02,415 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:10:02" (1/1) ... [2020-12-02 14:10:02,423 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:10:02" (1/1) ... [2020-12-02 14:10:02,425 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:10:02" (1/1) ... [2020-12-02 14:10:02,427 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:10:02" (1/1) ... [2020-12-02 14:10:02,430 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-02 14:10:02,431 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-02 14:10:02,431 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-02 14:10:02,431 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-02 14:10:02,432 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:10:02" (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 14:10:02,538 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.float_to_bitvec_DOUBLE [2020-12-02 14:10:02,538 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-12-02 14:10:02,538 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-02 14:10:02,539 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-02 14:10:02,539 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-02 14:10:02,539 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.float_to_bitvec_FLOAT [2020-12-02 14:10:02,777 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-02 14:10:02,777 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-12-02 14:10:02,779 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 02:10:02 BoogieIcfgContainer [2020-12-02 14:10:02,779 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-02 14:10:02,781 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-02 14:10:02,782 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-02 14:10:02,785 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-02 14:10:02,785 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 02:10:01" (1/3) ... [2020-12-02 14:10:02,786 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@253183c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 02:10:02, skipping insertion in model container [2020-12-02 14:10:02,788 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:10:02" (2/3) ... [2020-12-02 14:10:02,788 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@253183c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 02:10:02, skipping insertion in model container [2020-12-02 14:10:02,789 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 02:10:02" (3/3) ... [2020-12-02 14:10:02,790 INFO L111 eAbstractionObserver]: Analyzing ICFG float-no-simp6.c [2020-12-02 14:10:02,825 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-02 14:10:02,831 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-12-02 14:10:02,863 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-12-02 14:10:02,918 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-02 14:10:02,919 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-02 14:10:02,919 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-02 14:10:02,919 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-02 14:10:02,920 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-02 14:10:02,920 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-02 14:10:02,920 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-02 14:10:02,920 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-02 14:10:02,936 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2020-12-02 14:10:02,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-12-02 14:10:02,943 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 14:10:02,944 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-12-02 14:10:02,944 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 14:10:02,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 14:10:02,959 INFO L82 PathProgramCache]: Analyzing trace with hash 925604, now seen corresponding path program 1 times [2020-12-02 14:10:02,974 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-02 14:10:02,975 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2085315549] [2020-12-02 14:10:02,975 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 14:10:03,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 14:10:03,245 INFO L263 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-02 14:10:03,250 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-02 14:10:04,059 WARN L197 SmtUtils]: Spent 351.00 ms on a formula simplification that was a NOOP. DAG size: 35 [2020-12-02 14:10:04,074 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 14:10:04,075 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-02 14:10:04,747 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 14:10:04,748 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2085315549] [2020-12-02 14:10:04,749 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-02 14:10:04,755 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2020-12-02 14:10:04,756 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891519311] [2020-12-02 14:10:04,760 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-02 14:10:04,761 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-02 14:10:04,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-02 14:10:04,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-02 14:10:04,779 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 6 states. [2020-12-02 14:10:05,275 WARN L197 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 37 [2020-12-02 14:10:05,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 14:10:05,399 INFO L93 Difference]: Finished difference Result 27 states and 30 transitions. [2020-12-02 14:10:05,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-02 14:10:05,401 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 4 [2020-12-02 14:10:05,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 14:10:05,410 INFO L225 Difference]: With dead ends: 27 [2020-12-02 14:10:05,410 INFO L226 Difference]: Without dead ends: 11 [2020-12-02 14:10:05,413 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-02 14:10:05,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2020-12-02 14:10:05,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2020-12-02 14:10:05,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-12-02 14:10:05,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 10 transitions. [2020-12-02 14:10:05,444 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 10 transitions. Word has length 4 [2020-12-02 14:10:05,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 14:10:05,445 INFO L481 AbstractCegarLoop]: Abstraction has 11 states and 10 transitions. [2020-12-02 14:10:05,445 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-02 14:10:05,445 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 10 transitions. [2020-12-02 14:10:05,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-02 14:10:05,446 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 14:10:05,446 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-02 14:10:05,660 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-12-02 14:10:05,661 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 14:10:05,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 14:10:05,663 INFO L82 PathProgramCache]: Analyzing trace with hash 889629862, now seen corresponding path program 1 times [2020-12-02 14:10:05,664 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-02 14:10:05,665 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1759195587] [2020-12-02 14:10:05,669 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 14:10:05,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 14:10:05,977 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-02 14:10:05,979 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-02 14:10:08,971 WARN L197 SmtUtils]: Spent 1.67 s on a formula simplification that was a NOOP. DAG size: 35 [2020-12-02 14:10:08,985 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 14:10:08,985 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-02 14:10:11,936 WARN L197 SmtUtils]: Spent 611.00 ms on a formula simplification that was a NOOP. DAG size: 39 [2020-12-02 14:10:11,960 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 14:10:11,961 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1759195587] [2020-12-02 14:10:11,961 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-02 14:10:11,961 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2020-12-02 14:10:11,962 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479000082] [2020-12-02 14:10:11,963 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-02 14:10:11,963 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-02 14:10:11,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-02 14:10:11,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-02 14:10:11,965 INFO L87 Difference]: Start difference. First operand 11 states and 10 transitions. Second operand 6 states. [2020-12-02 14:10:14,418 WARN L197 SmtUtils]: Spent 1.93 s on a formula simplification that was a NOOP. DAG size: 37 [2020-12-02 14:10:14,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 14:10:14,890 INFO L93 Difference]: Finished difference Result 11 states and 10 transitions. [2020-12-02 14:10:14,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-02 14:10:14,891 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 6 [2020-12-02 14:10:14,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 14:10:14,892 INFO L225 Difference]: With dead ends: 11 [2020-12-02 14:10:14,892 INFO L226 Difference]: Without dead ends: 9 [2020-12-02 14:10:14,893 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 8.3s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-02 14:10:14,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2020-12-02 14:10:14,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2020-12-02 14:10:14,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-12-02 14:10:14,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 8 transitions. [2020-12-02 14:10:14,895 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 8 transitions. Word has length 6 [2020-12-02 14:10:14,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 14:10:14,896 INFO L481 AbstractCegarLoop]: Abstraction has 9 states and 8 transitions. [2020-12-02 14:10:14,896 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-02 14:10:14,896 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 8 transitions. [2020-12-02 14:10:14,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-02 14:10:14,897 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 14:10:14,897 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 14:10:15,105 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-12-02 14:10:15,106 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-02 14:10:15,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 14:10:15,108 INFO L82 PathProgramCache]: Analyzing trace with hash 235930184, now seen corresponding path program 1 times [2020-12-02 14:10:15,109 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-02 14:10:15,110 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1122184287] [2020-12-02 14:10:15,110 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 14:10:15,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 14:10:15,390 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-02 14:10:15,391 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-02 14:10:16,127 WARN L197 SmtUtils]: Spent 508.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-12-02 14:10:16,134 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 14:10:16,134 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-02 14:10:16,794 WARN L197 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 30 [2020-12-02 14:10:16,826 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 14:10:16,827 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1122184287] [2020-12-02 14:10:16,827 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-02 14:10:16,827 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2020-12-02 14:10:16,828 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460648639] [2020-12-02 14:10:16,828 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-02 14:10:16,828 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-02 14:10:16,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-02 14:10:16,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-02 14:10:16,830 INFO L87 Difference]: Start difference. First operand 9 states and 8 transitions. Second operand 6 states. [2020-12-02 14:10:17,261 WARN L197 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 29 [2020-12-02 14:10:17,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 14:10:17,262 INFO L93 Difference]: Finished difference Result 9 states and 8 transitions. [2020-12-02 14:10:17,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-02 14:10:17,262 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 8 [2020-12-02 14:10:17,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 14:10:17,263 INFO L225 Difference]: With dead ends: 9 [2020-12-02 14:10:17,263 INFO L226 Difference]: Without dead ends: 0 [2020-12-02 14:10:17,263 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-02 14:10:17,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-02 14:10:17,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-02 14:10:17,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-02 14:10:17,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-02 14:10:17,264 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 8 [2020-12-02 14:10:17,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 14:10:17,264 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-02 14:10:17,264 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-02 14:10:17,265 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-02 14:10:17,265 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-02 14:10:17,466 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-12-02 14:10:17,470 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-02 14:10:17,473 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-02 14:10:17,473 INFO L262 CegarLoopResult]: For program point L25(line 25) no Hoare annotation was computed. [2020-12-02 14:10:17,473 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 35) no Hoare annotation was computed. [2020-12-02 14:10:17,473 INFO L262 CegarLoopResult]: For program point L25-1(line 25) no Hoare annotation was computed. [2020-12-02 14:10:17,473 INFO L262 CegarLoopResult]: For program point L44(line 44) no Hoare annotation was computed. [2020-12-02 14:10:17,473 INFO L262 CegarLoopResult]: For program point L44-1(line 44) no Hoare annotation was computed. [2020-12-02 14:10:17,474 INFO L262 CegarLoopResult]: For program point L38(lines 1 52) no Hoare annotation was computed. [2020-12-02 14:10:17,474 INFO L262 CegarLoopResult]: For program point L5(lines 5 26) no Hoare annotation was computed. [2020-12-02 14:10:17,474 INFO L262 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-12-02 14:10:17,474 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-02 14:10:17,474 INFO L262 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-12-02 14:10:17,474 INFO L262 CegarLoopResult]: For program point L28(lines 28 36) no Hoare annotation was computed. [2020-12-02 14:10:17,474 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 25) no Hoare annotation was computed. [2020-12-02 14:10:17,474 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 44) no Hoare annotation was computed. [2020-12-02 14:10:17,475 INFO L262 CegarLoopResult]: For program point L35(line 35) no Hoare annotation was computed. [2020-12-02 14:10:17,475 INFO L262 CegarLoopResult]: For program point L35-1(line 35) no Hoare annotation was computed. [2020-12-02 14:10:17,479 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 02:10:17 BoogieIcfgContainer [2020-12-02 14:10:17,479 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-02 14:10:17,480 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-02 14:10:17,480 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-02 14:10:17,481 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-02 14:10:17,481 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 02:10:02" (3/4) ... [2020-12-02 14:10:17,484 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-02 14:10:17,495 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2020-12-02 14:10:17,495 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-02 14:10:17,496 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-02 14:10:17,496 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-02 14:10:17,542 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-12-02 14:10:17,542 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-02 14:10:17,544 INFO L168 Benchmark]: Toolchain (without parser) took 15593.42 ms. Allocated memory was 46.1 MB in the beginning and 56.6 MB in the end (delta: 10.5 MB). Free memory was 24.4 MB in the beginning and 24.3 MB in the end (delta: 155.8 kB). Peak memory consumption was 9.7 MB. Max. memory is 16.1 GB. [2020-12-02 14:10:17,545 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 46.1 MB. Free memory was 31.5 MB in the beginning and 31.5 MB in the end (delta: 23.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-02 14:10:17,545 INFO L168 Benchmark]: CACSL2BoogieTranslator took 405.75 ms. Allocated memory was 46.1 MB in the beginning and 56.6 MB in the end (delta: 10.5 MB). Free memory was 24.3 MB in the beginning and 30.5 MB in the end (delta: -6.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-12-02 14:10:17,546 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.49 ms. Allocated memory is still 56.6 MB. Free memory was 30.5 MB in the beginning and 28.9 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-02 14:10:17,547 INFO L168 Benchmark]: Boogie Preprocessor took 28.69 ms. Allocated memory is still 56.6 MB. Free memory was 28.8 MB in the beginning and 27.7 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-02 14:10:17,548 INFO L168 Benchmark]: RCFGBuilder took 348.82 ms. Allocated memory is still 56.6 MB. Free memory was 27.7 MB in the beginning and 28.1 MB in the end (delta: -493.6 kB). Peak memory consumption was 5.1 MB. Max. memory is 16.1 GB. [2020-12-02 14:10:17,548 INFO L168 Benchmark]: TraceAbstraction took 14698.26 ms. Allocated memory is still 56.6 MB. Free memory was 27.7 MB in the beginning and 26.7 MB in the end (delta: 961.3 kB). Peak memory consumption was 1.8 MB. Max. memory is 16.1 GB. [2020-12-02 14:10:17,549 INFO L168 Benchmark]: Witness Printer took 62.02 ms. Allocated memory is still 56.6 MB. Free memory was 26.7 MB in the beginning and 24.3 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-02 14:10:17,553 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 46.1 MB. Free memory was 31.5 MB in the beginning and 31.5 MB in the end (delta: 23.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 405.75 ms. Allocated memory was 46.1 MB in the beginning and 56.6 MB in the end (delta: 10.5 MB). Free memory was 24.3 MB in the beginning and 30.5 MB in the end (delta: -6.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 41.49 ms. Allocated memory is still 56.6 MB. Free memory was 30.5 MB in the beginning and 28.9 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 28.69 ms. Allocated memory is still 56.6 MB. Free memory was 28.8 MB in the beginning and 27.7 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 348.82 ms. Allocated memory is still 56.6 MB. Free memory was 27.7 MB in the beginning and 28.1 MB in the end (delta: -493.6 kB). Peak memory consumption was 5.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 14698.26 ms. Allocated memory is still 56.6 MB. Free memory was 27.7 MB in the beginning and 26.7 MB in the end (delta: 961.3 kB). Peak memory consumption was 1.8 MB. Max. memory is 16.1 GB. * Witness Printer took 62.02 ms. Allocated memory is still 56.6 MB. Free memory was 26.7 MB in the beginning and 24.3 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 35]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 25]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 44]: 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 3 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 16 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 14.5s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 4.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 16 SDtfs, 21 SDslu, 23 SDs, 0 SdLazy, 24 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 11.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=16occurred 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, 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, 8.9s InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 30 ConstructedInterpolants, 12 QuantifiedInterpolants, 4657 SizeOfPredicates, 11 NumberOfNonLiveVariables, 98 ConjunctsInSsa, 17 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...