./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/floats-cbmc-regression/float-no-simp1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6c24879c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/floats-cbmc-regression/float-no-simp1.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 6be8c61124ae7b0d434e1a6e7e7df1be3e3bca0c1d0e7a5376e369656416ef61 --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 02:21:31,362 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 02:21:31,364 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 02:21:31,422 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 02:21:31,423 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 02:21:31,424 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 02:21:31,426 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 02:21:31,428 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 02:21:31,429 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 02:21:31,433 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 02:21:31,434 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 02:21:31,436 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 02:21:31,437 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 02:21:31,439 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 02:21:31,440 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 02:21:31,443 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 02:21:31,444 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 02:21:31,446 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 02:21:31,447 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 02:21:31,460 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 02:21:31,461 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 02:21:31,462 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 02:21:31,462 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 02:21:31,463 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 02:21:31,465 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 02:21:31,468 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 02:21:31,471 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 02:21:31,471 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 02:21:31,472 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 02:21:31,473 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 02:21:31,474 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 02:21:31,474 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 02:21:31,476 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 02:21:31,476 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 02:21:31,477 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 02:21:31,478 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 02:21:31,478 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 02:21:31,479 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 02:21:31,479 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 02:21:31,479 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 02:21:31,480 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 02:21:31,481 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 02:21:31,482 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-12 02:21:31,506 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 02:21:31,507 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 02:21:31,507 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 02:21:31,507 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 02:21:31,508 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 02:21:31,508 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 02:21:31,508 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 02:21:31,509 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 02:21:31,509 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 02:21:31,510 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 02:21:31,510 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 02:21:31,510 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 02:21:31,510 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 02:21:31,510 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 02:21:31,511 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 02:21:31,511 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 02:21:31,511 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 02:21:31,511 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 02:21:31,511 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 02:21:31,511 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 02:21:31,512 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 02:21:31,512 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 02:21:31,512 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 02:21:31,512 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 02:21:31,513 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 02:21:31,513 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 02:21:31,513 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 02:21:31,513 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 02:21:31,513 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 02:21:31,514 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 02:21:31,514 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 02:21:31,514 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 02:21:31,514 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 02:21:31,514 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6be8c61124ae7b0d434e1a6e7e7df1be3e3bca0c1d0e7a5376e369656416ef61 [2022-07-12 02:21:31,780 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 02:21:31,805 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 02:21:31,808 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 02:21:31,809 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 02:21:31,814 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 02:21:31,816 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-cbmc-regression/float-no-simp1.c [2022-07-12 02:21:31,902 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3d16cf14a/940762fa03804229a9f094b927732ee0/FLAG800822c81 [2022-07-12 02:21:32,293 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 02:21:32,294 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cbmc-regression/float-no-simp1.c [2022-07-12 02:21:32,297 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3d16cf14a/940762fa03804229a9f094b927732ee0/FLAG800822c81 [2022-07-12 02:21:32,733 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3d16cf14a/940762fa03804229a9f094b927732ee0 [2022-07-12 02:21:32,735 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 02:21:32,736 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 02:21:32,737 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 02:21:32,738 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 02:21:32,740 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 02:21:32,741 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 02:21:32" (1/1) ... [2022-07-12 02:21:32,742 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@312a9678 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:21:32, skipping insertion in model container [2022-07-12 02:21:32,743 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 02:21:32" (1/1) ... [2022-07-12 02:21:32,749 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 02:21:32,763 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 02:21:32,897 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cbmc-regression/float-no-simp1.c[352,365] [2022-07-12 02:21:32,902 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 02:21:32,912 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 02:21:32,926 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cbmc-regression/float-no-simp1.c[352,365] [2022-07-12 02:21:32,927 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 02:21:32,943 INFO L208 MainTranslator]: Completed translation [2022-07-12 02:21:32,944 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:21:32 WrapperNode [2022-07-12 02:21:32,944 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 02:21:32,945 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 02:21:32,945 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 02:21:32,945 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 02:21:32,962 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:21:32" (1/1) ... [2022-07-12 02:21:32,969 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:21:32" (1/1) ... [2022-07-12 02:21:32,994 INFO L137 Inliner]: procedures = 11, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 19 [2022-07-12 02:21:32,995 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 02:21:32,995 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 02:21:32,996 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 02:21:32,996 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 02:21:33,002 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:21:32" (1/1) ... [2022-07-12 02:21:33,003 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:21:32" (1/1) ... [2022-07-12 02:21:33,005 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:21:32" (1/1) ... [2022-07-12 02:21:33,006 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:21:32" (1/1) ... [2022-07-12 02:21:33,010 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:21:32" (1/1) ... [2022-07-12 02:21:33,012 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:21:32" (1/1) ... [2022-07-12 02:21:33,012 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:21:32" (1/1) ... [2022-07-12 02:21:33,018 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 02:21:33,019 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 02:21:33,020 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 02:21:33,020 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 02:21:33,021 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:21:32" (1/1) ... [2022-07-12 02:21:33,028 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 02:21:33,038 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 02:21:33,070 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-12 02:21:33,095 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-12 02:21:33,113 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 02:21:33,113 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 02:21:33,113 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 02:21:33,113 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 02:21:33,169 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 02:21:33,171 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 02:21:33,263 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 02:21:33,271 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 02:21:33,272 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-12 02:21:33,274 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 02:21:33 BoogieIcfgContainer [2022-07-12 02:21:33,274 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 02:21:33,278 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 02:21:33,279 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 02:21:33,283 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 02:21:33,283 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 02:21:32" (1/3) ... [2022-07-12 02:21:33,284 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b015c0f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 02:21:33, skipping insertion in model container [2022-07-12 02:21:33,284 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:21:32" (2/3) ... [2022-07-12 02:21:33,285 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b015c0f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 02:21:33, skipping insertion in model container [2022-07-12 02:21:33,285 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 02:21:33" (3/3) ... [2022-07-12 02:21:33,286 INFO L111 eAbstractionObserver]: Analyzing ICFG float-no-simp1.c [2022-07-12 02:21:33,305 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 02:21:33,305 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-12 02:21:33,366 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 02:21:33,375 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@2e6dbda4, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@115792c [2022-07-12 02:21:33,375 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-12 02:21:33,380 INFO L276 IsEmpty]: Start isEmpty. Operand has 8 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 7 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 02:21:33,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-07-12 02:21:33,394 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 02:21:33,395 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-07-12 02:21:33,397 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 02:21:33,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 02:21:33,403 INFO L85 PathProgramCache]: Analyzing trace with hash 925604, now seen corresponding path program 1 times [2022-07-12 02:21:33,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 02:21:33,411 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704476135] [2022-07-12 02:21:33,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 02:21:33,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 02:21:33,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-12 02:21:33,485 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-12 02:21:33,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-12 02:21:33,518 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-12 02:21:33,519 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-12 02:21:33,520 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-07-12 02:21:33,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 02:21:33,526 INFO L356 BasicCegarLoop]: Path program histogram: [1] [2022-07-12 02:21:33,530 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-12 02:21:33,545 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.07 02:21:33 BoogieIcfgContainer [2022-07-12 02:21:33,545 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-12 02:21:33,546 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-12 02:21:33,546 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-12 02:21:33,546 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-12 02:21:33,546 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 02:21:33" (3/4) ... [2022-07-12 02:21:33,549 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-07-12 02:21:33,549 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-12 02:21:33,550 INFO L158 Benchmark]: Toolchain (without parser) took 813.92ms. Allocated memory is still 102.8MB. Free memory was 64.4MB in the beginning and 54.3MB in the end (delta: 10.1MB). Peak memory consumption was 7.8MB. Max. memory is 16.1GB. [2022-07-12 02:21:33,551 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 102.8MB. Free memory is still 81.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-12 02:21:33,551 INFO L158 Benchmark]: CACSL2BoogieTranslator took 206.89ms. Allocated memory is still 102.8MB. Free memory was 64.2MB in the beginning and 77.9MB in the end (delta: -13.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-12 02:21:33,552 INFO L158 Benchmark]: Boogie Procedure Inliner took 49.81ms. Allocated memory is still 102.8MB. Free memory was 77.9MB in the beginning and 76.5MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-12 02:21:33,553 INFO L158 Benchmark]: Boogie Preprocessor took 22.97ms. Allocated memory is still 102.8MB. Free memory was 76.5MB in the beginning and 75.5MB in the end (delta: 947.7kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-12 02:21:33,556 INFO L158 Benchmark]: RCFGBuilder took 254.84ms. Allocated memory is still 102.8MB. Free memory was 75.5MB in the beginning and 67.7MB in the end (delta: 7.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-12 02:21:33,556 INFO L158 Benchmark]: TraceAbstraction took 266.77ms. Allocated memory is still 102.8MB. Free memory was 67.2MB in the beginning and 54.6MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-07-12 02:21:33,557 INFO L158 Benchmark]: Witness Printer took 3.72ms. Allocated memory is still 102.8MB. Free memory was 54.6MB in the beginning and 54.3MB in the end (delta: 391.8kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-12 02:21:33,572 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 102.8MB. Free memory is still 81.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 206.89ms. Allocated memory is still 102.8MB. Free memory was 64.2MB in the beginning and 77.9MB in the end (delta: -13.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 49.81ms. Allocated memory is still 102.8MB. Free memory was 77.9MB in the beginning and 76.5MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 22.97ms. Allocated memory is still 102.8MB. Free memory was 76.5MB in the beginning and 75.5MB in the end (delta: 947.7kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 254.84ms. Allocated memory is still 102.8MB. Free memory was 75.5MB in the beginning and 67.7MB in the end (delta: 7.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 266.77ms. Allocated memory is still 102.8MB. Free memory was 67.2MB in the beginning and 54.6MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Witness Printer took 3.72ms. Allocated memory is still 102.8MB. Free memory was 54.6MB in the beginning and 54.3MB in the end (delta: 391.8kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 12]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of to_int at line 9, overapproximation of to_real at line 10. Possible FailurePath: [L6] unsigned int i, j; [L7] double d; [L9] i=100.0 [L10] d=i [L11] j=d [L12] COND TRUE !(j==100) VAL [j=0] [L12] reach_error() VAL [j=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 8 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=8occurred in iteration=0, InterpolantAutomatonStates: 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 [2022-07-12 02:21:33,621 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/floats-cbmc-regression/float-no-simp1.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 6be8c61124ae7b0d434e1a6e7e7df1be3e3bca0c1d0e7a5376e369656416ef61 --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 02:21:35,484 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 02:21:35,486 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 02:21:35,518 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 02:21:35,519 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 02:21:35,520 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 02:21:35,523 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 02:21:35,525 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 02:21:35,527 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 02:21:35,536 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 02:21:35,537 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 02:21:35,542 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 02:21:35,543 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 02:21:35,545 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 02:21:35,546 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 02:21:35,549 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 02:21:35,550 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 02:21:35,551 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 02:21:35,553 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 02:21:35,560 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 02:21:35,561 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 02:21:35,562 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 02:21:35,565 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 02:21:35,566 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 02:21:35,567 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 02:21:35,576 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 02:21:35,576 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 02:21:35,576 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 02:21:35,577 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 02:21:35,577 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 02:21:35,578 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 02:21:35,578 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 02:21:35,579 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 02:21:35,579 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 02:21:35,580 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 02:21:35,580 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 02:21:35,580 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 02:21:35,581 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 02:21:35,581 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 02:21:35,595 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 02:21:35,596 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 02:21:35,597 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 02:21:35,597 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-07-12 02:21:35,629 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 02:21:35,630 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 02:21:35,630 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 02:21:35,631 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 02:21:35,632 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 02:21:35,632 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 02:21:35,633 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 02:21:35,633 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 02:21:35,633 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 02:21:35,634 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 02:21:35,634 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 02:21:35,635 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 02:21:35,635 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 02:21:35,635 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 02:21:35,635 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 02:21:35,636 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 02:21:35,636 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-12 02:21:35,636 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-07-12 02:21:35,636 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-07-12 02:21:35,637 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 02:21:35,637 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 02:21:35,637 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 02:21:35,638 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 02:21:35,638 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 02:21:35,638 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 02:21:35,638 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 02:21:35,638 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 02:21:35,639 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 02:21:35,639 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 02:21:35,639 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 02:21:35,640 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-07-12 02:21:35,640 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-07-12 02:21:35,640 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 02:21:35,640 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 02:21:35,641 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 02:21:35,641 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-07-12 02:21:35,641 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6be8c61124ae7b0d434e1a6e7e7df1be3e3bca0c1d0e7a5376e369656416ef61 [2022-07-12 02:21:35,997 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 02:21:36,026 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 02:21:36,028 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 02:21:36,029 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 02:21:36,031 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 02:21:36,032 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-cbmc-regression/float-no-simp1.c [2022-07-12 02:21:36,080 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8bde1f1e8/9c7904ef31a14feeabce7b82595b7a96/FLAGf899d36e8 [2022-07-12 02:21:36,469 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 02:21:36,472 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cbmc-regression/float-no-simp1.c [2022-07-12 02:21:36,477 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8bde1f1e8/9c7904ef31a14feeabce7b82595b7a96/FLAGf899d36e8 [2022-07-12 02:21:36,920 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8bde1f1e8/9c7904ef31a14feeabce7b82595b7a96 [2022-07-12 02:21:36,923 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 02:21:36,924 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 02:21:36,925 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 02:21:36,926 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 02:21:36,929 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 02:21:36,930 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 02:21:36" (1/1) ... [2022-07-12 02:21:36,932 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@327d68b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:21:36, skipping insertion in model container [2022-07-12 02:21:36,932 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 02:21:36" (1/1) ... [2022-07-12 02:21:36,939 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 02:21:36,952 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 02:21:37,089 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cbmc-regression/float-no-simp1.c[352,365] [2022-07-12 02:21:37,092 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 02:21:37,107 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 02:21:37,122 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cbmc-regression/float-no-simp1.c[352,365] [2022-07-12 02:21:37,123 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 02:21:37,143 INFO L208 MainTranslator]: Completed translation [2022-07-12 02:21:37,144 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:21:37 WrapperNode [2022-07-12 02:21:37,144 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 02:21:37,145 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 02:21:37,145 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 02:21:37,145 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 02:21:37,164 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:21:37" (1/1) ... [2022-07-12 02:21:37,172 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:21:37" (1/1) ... [2022-07-12 02:21:37,188 INFO L137 Inliner]: procedures = 12, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 20 [2022-07-12 02:21:37,188 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 02:21:37,189 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 02:21:37,190 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 02:21:37,190 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 02:21:37,197 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:21:37" (1/1) ... [2022-07-12 02:21:37,198 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:21:37" (1/1) ... [2022-07-12 02:21:37,208 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:21:37" (1/1) ... [2022-07-12 02:21:37,209 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:21:37" (1/1) ... [2022-07-12 02:21:37,214 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:21:37" (1/1) ... [2022-07-12 02:21:37,215 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:21:37" (1/1) ... [2022-07-12 02:21:37,216 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:21:37" (1/1) ... [2022-07-12 02:21:37,228 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 02:21:37,229 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 02:21:37,229 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 02:21:37,229 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 02:21:37,230 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:21:37" (1/1) ... [2022-07-12 02:21:37,236 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 02:21:37,245 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 02:21:37,290 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-12 02:21:37,359 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-12 02:21:37,397 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 02:21:37,397 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 02:21:37,397 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 02:21:37,398 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-07-12 02:21:37,471 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 02:21:37,472 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 02:21:37,659 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 02:21:37,664 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 02:21:37,664 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-12 02:21:37,666 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 02:21:37 BoogieIcfgContainer [2022-07-12 02:21:37,666 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 02:21:37,670 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 02:21:37,670 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 02:21:37,673 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 02:21:37,674 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 02:21:36" (1/3) ... [2022-07-12 02:21:37,674 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72ad3ddd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 02:21:37, skipping insertion in model container [2022-07-12 02:21:37,675 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:21:37" (2/3) ... [2022-07-12 02:21:37,675 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72ad3ddd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 02:21:37, skipping insertion in model container [2022-07-12 02:21:37,675 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 02:21:37" (3/3) ... [2022-07-12 02:21:37,677 INFO L111 eAbstractionObserver]: Analyzing ICFG float-no-simp1.c [2022-07-12 02:21:37,692 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 02:21:37,692 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-12 02:21:37,752 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 02:21:37,762 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@2b1c48b6, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@23a449ff [2022-07-12 02:21:37,763 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-12 02:21:37,767 INFO L276 IsEmpty]: Start isEmpty. Operand has 8 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 7 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 02:21:37,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-07-12 02:21:37,779 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 02:21:37,779 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-07-12 02:21:37,780 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 02:21:37,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 02:21:37,794 INFO L85 PathProgramCache]: Analyzing trace with hash 925604, now seen corresponding path program 1 times [2022-07-12 02:21:37,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 02:21:37,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [830383937] [2022-07-12 02:21:37,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 02:21:37,806 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 02:21:37,807 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 02:21:37,825 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-12 02:21:37,863 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-07-12 02:21:37,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 02:21:37,916 INFO L263 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-12 02:21:37,920 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 02:21:38,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 02:21:38,036 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 02:21:38,037 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 02:21:38,037 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [830383937] [2022-07-12 02:21:38,038 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [830383937] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 02:21:38,038 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 02:21:38,038 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 02:21:38,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470403703] [2022-07-12 02:21:38,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 02:21:38,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 02:21:38,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 02:21:38,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 02:21:38,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 02:21:38,079 INFO L87 Difference]: Start difference. First operand has 8 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 7 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 02:21:38,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 02:21:38,087 INFO L93 Difference]: Finished difference Result 11 states and 10 transitions. [2022-07-12 02:21:38,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 02:21:38,089 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-07-12 02:21:38,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 02:21:38,095 INFO L225 Difference]: With dead ends: 11 [2022-07-12 02:21:38,096 INFO L226 Difference]: Without dead ends: 0 [2022-07-12 02:21:38,098 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 02:21:38,103 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 0 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 02:21:38,104 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 7 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 1 Unchecked, 0.0s Time] [2022-07-12 02:21:38,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-07-12 02:21:38,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-07-12 02:21:38,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 02:21:38,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-07-12 02:21:38,121 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 4 [2022-07-12 02:21:38,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 02:21:38,121 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-12 02:21:38,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 02:21:38,122 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-07-12 02:21:38,122 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-07-12 02:21:38,125 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-07-12 02:21:38,133 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2022-07-12 02:21:38,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 02:21:38,335 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-07-12 02:21:38,337 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-07-12 02:21:38,338 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-07-12 02:21:38,338 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-07-12 02:21:38,338 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-07-12 02:21:38,338 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2022-07-12 02:21:38,338 INFO L899 garLoopResultBuilder]: For program point L12(line 12) no Hoare annotation was computed. [2022-07-12 02:21:38,339 INFO L899 garLoopResultBuilder]: For program point L12-1(line 12) no Hoare annotation was computed. [2022-07-12 02:21:38,339 INFO L899 garLoopResultBuilder]: For program point L4(lines 4 13) no Hoare annotation was computed. [2022-07-12 02:21:38,342 INFO L356 BasicCegarLoop]: Path program histogram: [1] [2022-07-12 02:21:38,344 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-12 02:21:38,348 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.07 02:21:38 BoogieIcfgContainer [2022-07-12 02:21:38,348 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-12 02:21:38,349 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-12 02:21:38,349 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-12 02:21:38,349 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-12 02:21:38,349 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 02:21:37" (3/4) ... [2022-07-12 02:21:38,352 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-07-12 02:21:38,360 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2022-07-12 02:21:38,361 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-07-12 02:21:38,361 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-07-12 02:21:38,361 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-07-12 02:21:38,386 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-12 02:21:38,386 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-12 02:21:38,387 INFO L158 Benchmark]: Toolchain (without parser) took 1462.38ms. Allocated memory was 54.5MB in the beginning and 71.3MB in the end (delta: 16.8MB). Free memory was 31.9MB in the beginning and 45.9MB in the end (delta: -14.0MB). Peak memory consumption was 2.9MB. Max. memory is 16.1GB. [2022-07-12 02:21:38,387 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 54.5MB. Free memory is still 36.4MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-12 02:21:38,388 INFO L158 Benchmark]: CACSL2BoogieTranslator took 218.80ms. Allocated memory was 54.5MB in the beginning and 71.3MB in the end (delta: 16.8MB). Free memory was 31.7MB in the beginning and 55.9MB in the end (delta: -24.2MB). Peak memory consumption was 7.8MB. Max. memory is 16.1GB. [2022-07-12 02:21:38,388 INFO L158 Benchmark]: Boogie Procedure Inliner took 43.40ms. Allocated memory is still 71.3MB. Free memory was 55.9MB in the beginning and 54.5MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-12 02:21:38,388 INFO L158 Benchmark]: Boogie Preprocessor took 39.25ms. Allocated memory is still 71.3MB. Free memory was 54.5MB in the beginning and 53.4MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-12 02:21:38,389 INFO L158 Benchmark]: RCFGBuilder took 436.73ms. Allocated memory is still 71.3MB. Free memory was 53.1MB in the beginning and 45.7MB in the end (delta: 7.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-12 02:21:38,389 INFO L158 Benchmark]: TraceAbstraction took 678.00ms. Allocated memory is still 71.3MB. Free memory was 45.1MB in the beginning and 48.4MB in the end (delta: -3.3MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-12 02:21:38,390 INFO L158 Benchmark]: Witness Printer took 37.64ms. Allocated memory is still 71.3MB. Free memory was 48.4MB in the beginning and 45.9MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-12 02:21:38,391 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 54.5MB. Free memory is still 36.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 218.80ms. Allocated memory was 54.5MB in the beginning and 71.3MB in the end (delta: 16.8MB). Free memory was 31.7MB in the beginning and 55.9MB in the end (delta: -24.2MB). Peak memory consumption was 7.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 43.40ms. Allocated memory is still 71.3MB. Free memory was 55.9MB in the beginning and 54.5MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 39.25ms. Allocated memory is still 71.3MB. Free memory was 54.5MB in the beginning and 53.4MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 436.73ms. Allocated memory is still 71.3MB. Free memory was 53.1MB in the beginning and 45.7MB in the end (delta: 7.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 678.00ms. Allocated memory is still 71.3MB. Free memory was 45.1MB in the beginning and 48.4MB in the end (delta: -3.3MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 37.64ms. Allocated memory is still 71.3MB. Free memory was 48.4MB in the beginning and 45.9MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 12]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 8 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.6s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 7 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 1 IncrementalHoareTripleChecker+Unchecked, 3 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 0 IncrementalHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 4 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=8occurred in iteration=0, InterpolantAutomatonStates: 3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 0 LocationsWithAnnotation, 0 PreInvPairs, 0 NumberOfFragments, 0 HoareAnnotationTreeSize, 0 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 0 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 3 ConstructedInterpolants, 1 QuantifiedInterpolants, 14 SizeOfPredicates, 4 NumberOfNonLiveVariables, 20 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-07-12 02:21:38,462 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE