./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/floats-cbmc-regression/float3.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c3fed411 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/float3.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 bfc84f7de0a9f57990dc33f292919523a52aa1e7a1c1eca24395d6b28aed01b7 --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-17 06:13:39,372 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-17 06:13:39,374 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-17 06:13:39,419 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-17 06:13:39,419 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-17 06:13:39,422 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-17 06:13:39,424 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-17 06:13:39,429 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-17 06:13:39,431 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-17 06:13:39,435 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-17 06:13:39,436 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-17 06:13:39,437 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-17 06:13:39,437 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-17 06:13:39,439 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-17 06:13:39,441 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-17 06:13:39,445 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-17 06:13:39,446 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-17 06:13:39,446 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-17 06:13:39,447 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-17 06:13:39,448 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-17 06:13:39,449 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-17 06:13:39,464 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-17 06:13:39,465 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-17 06:13:39,465 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-17 06:13:39,466 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-17 06:13:39,468 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-17 06:13:39,468 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-17 06:13:39,469 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-17 06:13:39,469 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-17 06:13:39,470 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-17 06:13:39,470 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-17 06:13:39,471 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-17 06:13:39,472 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-17 06:13:39,472 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-17 06:13:39,473 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-17 06:13:39,474 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-17 06:13:39,474 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-17 06:13:39,474 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-17 06:13:39,475 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-17 06:13:39,475 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-17 06:13:39,475 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-17 06:13:39,476 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-17 06:13:39,495 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-17 06:13:39,495 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-17 06:13:39,495 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-17 06:13:39,496 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-17 06:13:39,496 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-17 06:13:39,496 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-17 06:13:39,497 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-17 06:13:39,497 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-17 06:13:39,497 INFO L138 SettingsManager]: * Use SBE=true [2021-12-17 06:13:39,497 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-17 06:13:39,498 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-17 06:13:39,498 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-17 06:13:39,498 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-17 06:13:39,498 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-17 06:13:39,499 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-17 06:13:39,499 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-17 06:13:39,499 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-17 06:13:39,499 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-17 06:13:39,499 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-17 06:13:39,499 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-17 06:13:39,500 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-17 06:13:39,500 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-17 06:13:39,500 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-17 06:13:39,500 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-17 06:13:39,500 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 06:13:39,500 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-17 06:13:39,500 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-17 06:13:39,501 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-17 06:13:39,501 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-17 06:13:39,501 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-17 06:13:39,501 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-17 06:13:39,501 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-17 06:13:39,501 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-17 06:13:39,502 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-17 06:13:39,502 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bfc84f7de0a9f57990dc33f292919523a52aa1e7a1c1eca24395d6b28aed01b7 [2021-12-17 06:13:39,696 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-17 06:13:39,714 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-17 06:13:39,716 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-17 06:13:39,716 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-17 06:13:39,717 INFO L275 PluginConnector]: CDTParser initialized [2021-12-17 06:13:39,718 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-cbmc-regression/float3.c [2021-12-17 06:13:39,782 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/86aba6771/8384824d08c64379b1df67963d41bc7d/FLAG5b350d69b [2021-12-17 06:13:40,157 INFO L306 CDTParser]: Found 1 translation units. [2021-12-17 06:13:40,157 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cbmc-regression/float3.c [2021-12-17 06:13:40,161 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/86aba6771/8384824d08c64379b1df67963d41bc7d/FLAG5b350d69b [2021-12-17 06:13:40,561 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/86aba6771/8384824d08c64379b1df67963d41bc7d [2021-12-17 06:13:40,564 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-17 06:13:40,565 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-17 06:13:40,566 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-17 06:13:40,567 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-17 06:13:40,569 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-17 06:13:40,569 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 06:13:40" (1/1) ... [2021-12-17 06:13:40,570 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b2d30c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:13:40, skipping insertion in model container [2021-12-17 06:13:40,570 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 06:13:40" (1/1) ... [2021-12-17 06:13:40,575 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-17 06:13:40,586 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-17 06:13:40,729 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/float3.c[465,478] [2021-12-17 06:13:40,733 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 06:13:40,745 INFO L203 MainTranslator]: Completed pre-run [2021-12-17 06:13:40,757 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/float3.c[465,478] [2021-12-17 06:13:40,758 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 06:13:40,767 INFO L208 MainTranslator]: Completed translation [2021-12-17 06:13:40,767 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:13:40 WrapperNode [2021-12-17 06:13:40,768 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-17 06:13:40,769 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-17 06:13:40,769 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-17 06:13:40,769 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-17 06:13:40,773 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:13:40" (1/1) ... [2021-12-17 06:13:40,780 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:13:40" (1/1) ... [2021-12-17 06:13:40,797 INFO L137 Inliner]: procedures = 13, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 24 [2021-12-17 06:13:40,797 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-17 06:13:40,806 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-17 06:13:40,807 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-17 06:13:40,807 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-17 06:13:40,812 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:13:40" (1/1) ... [2021-12-17 06:13:40,812 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:13:40" (1/1) ... [2021-12-17 06:13:40,813 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:13:40" (1/1) ... [2021-12-17 06:13:40,813 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:13:40" (1/1) ... [2021-12-17 06:13:40,815 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:13:40" (1/1) ... [2021-12-17 06:13:40,816 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:13:40" (1/1) ... [2021-12-17 06:13:40,816 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:13:40" (1/1) ... [2021-12-17 06:13:40,817 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-17 06:13:40,818 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-17 06:13:40,818 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-17 06:13:40,818 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-17 06:13:40,821 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:13:40" (1/1) ... [2021-12-17 06:13:40,826 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 06:13:40,834 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 06:13:40,857 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) [2021-12-17 06:13:40,875 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 [2021-12-17 06:13:40,885 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-17 06:13:40,885 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-17 06:13:40,885 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-17 06:13:40,885 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-17 06:13:40,930 INFO L236 CfgBuilder]: Building ICFG [2021-12-17 06:13:40,932 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-17 06:13:41,003 INFO L277 CfgBuilder]: Performing block encoding [2021-12-17 06:13:41,008 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-17 06:13:41,008 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-17 06:13:41,010 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 06:13:41 BoogieIcfgContainer [2021-12-17 06:13:41,010 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-17 06:13:41,018 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-17 06:13:41,018 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-17 06:13:41,023 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-17 06:13:41,023 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.12 06:13:40" (1/3) ... [2021-12-17 06:13:41,024 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2adf91e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 06:13:41, skipping insertion in model container [2021-12-17 06:13:41,024 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:13:40" (2/3) ... [2021-12-17 06:13:41,024 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2adf91e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 06:13:41, skipping insertion in model container [2021-12-17 06:13:41,025 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 06:13:41" (3/3) ... [2021-12-17 06:13:41,025 INFO L111 eAbstractionObserver]: Analyzing ICFG float3.c [2021-12-17 06:13:41,029 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-17 06:13:41,029 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-17 06:13:41,071 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-17 06:13:41,084 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-12-17 06:13:41,085 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-17 06:13:41,111 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 10 states have internal predecessors, (12), 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) [2021-12-17 06:13:41,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-12-17 06:13:41,114 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 06:13:41,115 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-17 06:13:41,115 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 06:13:41,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 06:13:41,119 INFO L85 PathProgramCache]: Analyzing trace with hash 1804965381, now seen corresponding path program 1 times [2021-12-17 06:13:41,124 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 06:13:41,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240037028] [2021-12-17 06:13:41,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 06:13:41,129 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 06:13:41,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-17 06:13:41,196 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-17 06:13:41,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-17 06:13:41,214 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-17 06:13:41,215 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-17 06:13:41,216 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-17 06:13:41,217 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-17 06:13:41,220 INFO L732 BasicCegarLoop]: Path program histogram: [1] [2021-12-17 06:13:41,222 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-17 06:13:41,233 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.12 06:13:41 BoogieIcfgContainer [2021-12-17 06:13:41,234 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-17 06:13:41,234 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-17 06:13:41,234 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-17 06:13:41,235 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-17 06:13:41,235 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 06:13:41" (3/4) ... [2021-12-17 06:13:41,237 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-12-17 06:13:41,237 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-17 06:13:41,238 INFO L158 Benchmark]: Toolchain (without parser) took 672.66ms. Allocated memory is still 111.1MB. Free memory was 77.7MB in the beginning and 62.7MB in the end (delta: 15.0MB). Peak memory consumption was 11.6MB. Max. memory is 16.1GB. [2021-12-17 06:13:41,238 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 79.7MB. Free memory is still 39.7MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-17 06:13:41,239 INFO L158 Benchmark]: CACSL2BoogieTranslator took 201.38ms. Allocated memory is still 111.1MB. Free memory was 77.5MB in the beginning and 86.7MB in the end (delta: -9.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-17 06:13:41,239 INFO L158 Benchmark]: Boogie Procedure Inliner took 28.97ms. Allocated memory is still 111.1MB. Free memory was 86.7MB in the beginning and 85.7MB in the end (delta: 937.1kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-17 06:13:41,239 INFO L158 Benchmark]: Boogie Preprocessor took 10.90ms. Allocated memory is still 111.1MB. Free memory was 85.7MB in the beginning and 84.6MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-17 06:13:41,240 INFO L158 Benchmark]: RCFGBuilder took 192.02ms. Allocated memory is still 111.1MB. Free memory was 84.6MB in the beginning and 76.2MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-17 06:13:41,240 INFO L158 Benchmark]: TraceAbstraction took 216.18ms. Allocated memory is still 111.1MB. Free memory was 75.6MB in the beginning and 63.0MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-12-17 06:13:41,241 INFO L158 Benchmark]: Witness Printer took 2.82ms. Allocated memory is still 111.1MB. Free memory was 63.0MB in the beginning and 62.7MB in the end (delta: 324.7kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-17 06:13:41,242 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 79.7MB. Free memory is still 39.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 201.38ms. Allocated memory is still 111.1MB. Free memory was 77.5MB in the beginning and 86.7MB in the end (delta: -9.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 28.97ms. Allocated memory is still 111.1MB. Free memory was 86.7MB in the beginning and 85.7MB in the end (delta: 937.1kB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 10.90ms. Allocated memory is still 111.1MB. Free memory was 85.7MB in the beginning and 84.6MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 192.02ms. Allocated memory is still 111.1MB. Free memory was 84.6MB in the beginning and 76.2MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 216.18ms. Allocated memory is still 111.1MB. Free memory was 75.6MB in the beginning and 63.0MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Witness Printer took 2.82ms. Allocated memory is still 111.1MB. Free memory was 63.0MB in the beginning and 62.7MB in the end (delta: 324.7kB). 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: 26]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 26, overapproximation of someBinaryArithmeticDOUBLEoperation at line 22. Possible FailurePath: [L6] double d = 0.0; VAL [d=0] [L15] int x = 2; [L17] COND TRUE __VERIFIER_nondet_int() [L18] x = 4 VAL [d=0, x=4] [L20] CALL f1() [L10] d = 1.0 VAL [d=1] [L20] RET f1() [L22] d += (x == 2) [L24] d += (x > 3) VAL [x=4] [L26] COND TRUE !(d == 2.0) VAL [x=4] [L26] reach_error() VAL [x=4] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 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, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11occurred 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, 7 NumberOfCodeBlocks, 7 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 [2021-12-17 06:13:41,287 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/float3.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 bfc84f7de0a9f57990dc33f292919523a52aa1e7a1c1eca24395d6b28aed01b7 --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-17 06:13:42,768 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-17 06:13:42,769 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-17 06:13:42,802 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-17 06:13:42,802 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-17 06:13:42,803 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-17 06:13:42,804 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-17 06:13:42,805 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-17 06:13:42,806 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-17 06:13:42,807 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-17 06:13:42,807 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-17 06:13:42,808 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-17 06:13:42,808 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-17 06:13:42,809 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-17 06:13:42,810 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-17 06:13:42,810 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-17 06:13:42,811 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-17 06:13:42,811 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-17 06:13:42,812 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-17 06:13:42,814 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-17 06:13:42,814 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-17 06:13:42,828 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-17 06:13:42,829 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-17 06:13:42,829 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-17 06:13:42,831 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-17 06:13:42,831 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-17 06:13:42,831 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-17 06:13:42,832 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-17 06:13:42,832 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-17 06:13:42,833 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-17 06:13:42,833 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-17 06:13:42,834 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-17 06:13:42,834 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-17 06:13:42,835 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-17 06:13:42,835 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-17 06:13:42,835 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-17 06:13:42,836 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-17 06:13:42,836 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-17 06:13:42,836 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-17 06:13:42,837 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-17 06:13:42,837 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-17 06:13:42,838 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-12-17 06:13:42,852 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-17 06:13:42,852 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-17 06:13:42,852 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-17 06:13:42,852 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-17 06:13:42,853 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-17 06:13:42,853 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-17 06:13:42,853 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-17 06:13:42,854 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-17 06:13:42,854 INFO L138 SettingsManager]: * Use SBE=true [2021-12-17 06:13:42,854 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-17 06:13:42,854 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-17 06:13:42,854 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-17 06:13:42,854 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-17 06:13:42,854 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-17 06:13:42,855 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-17 06:13:42,855 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-17 06:13:42,855 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-17 06:13:42,855 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-17 06:13:42,855 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-17 06:13:42,855 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-17 06:13:42,856 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-17 06:13:42,856 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-17 06:13:42,856 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-17 06:13:42,856 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-17 06:13:42,856 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-17 06:13:42,856 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-17 06:13:42,857 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 06:13:42,857 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-17 06:13:42,857 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-17 06:13:42,857 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-17 06:13:42,857 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-17 06:13:42,857 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-17 06:13:42,858 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-17 06:13:42,858 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-17 06:13:42,858 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-17 06:13:42,858 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-17 06:13:42,858 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-17 06:13:42,858 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bfc84f7de0a9f57990dc33f292919523a52aa1e7a1c1eca24395d6b28aed01b7 [2021-12-17 06:13:43,086 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-17 06:13:43,100 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-17 06:13:43,102 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-17 06:13:43,103 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-17 06:13:43,103 INFO L275 PluginConnector]: CDTParser initialized [2021-12-17 06:13:43,104 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-cbmc-regression/float3.c [2021-12-17 06:13:43,165 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2ce99a88b/55bbfd3ce45a4e898079e2177cd815b9/FLAG1e4fadec9 [2021-12-17 06:13:43,536 INFO L306 CDTParser]: Found 1 translation units. [2021-12-17 06:13:43,537 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cbmc-regression/float3.c [2021-12-17 06:13:43,541 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2ce99a88b/55bbfd3ce45a4e898079e2177cd815b9/FLAG1e4fadec9 [2021-12-17 06:13:43,551 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2ce99a88b/55bbfd3ce45a4e898079e2177cd815b9 [2021-12-17 06:13:43,553 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-17 06:13:43,554 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-17 06:13:43,555 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-17 06:13:43,555 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-17 06:13:43,557 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-17 06:13:43,558 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 06:13:43" (1/1) ... [2021-12-17 06:13:43,559 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16b39f7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:13:43, skipping insertion in model container [2021-12-17 06:13:43,559 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 06:13:43" (1/1) ... [2021-12-17 06:13:43,563 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-17 06:13:43,572 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-17 06:13:43,660 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/float3.c[465,478] [2021-12-17 06:13:43,663 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 06:13:43,673 INFO L203 MainTranslator]: Completed pre-run [2021-12-17 06:13:43,687 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/float3.c[465,478] [2021-12-17 06:13:43,687 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 06:13:43,698 INFO L208 MainTranslator]: Completed translation [2021-12-17 06:13:43,699 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:13:43 WrapperNode [2021-12-17 06:13:43,699 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-17 06:13:43,700 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-17 06:13:43,700 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-17 06:13:43,700 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-17 06:13:43,705 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:13:43" (1/1) ... [2021-12-17 06:13:43,710 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:13:43" (1/1) ... [2021-12-17 06:13:43,749 INFO L137 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 24 [2021-12-17 06:13:43,749 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-17 06:13:43,750 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-17 06:13:43,750 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-17 06:13:43,750 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-17 06:13:43,754 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:13:43" (1/1) ... [2021-12-17 06:13:43,755 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:13:43" (1/1) ... [2021-12-17 06:13:43,756 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:13:43" (1/1) ... [2021-12-17 06:13:43,756 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:13:43" (1/1) ... [2021-12-17 06:13:43,759 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:13:43" (1/1) ... [2021-12-17 06:13:43,760 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:13:43" (1/1) ... [2021-12-17 06:13:43,761 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:13:43" (1/1) ... [2021-12-17 06:13:43,762 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-17 06:13:43,763 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-17 06:13:43,763 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-17 06:13:43,763 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-17 06:13:43,764 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:13:43" (1/1) ... [2021-12-17 06:13:43,768 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 06:13:43,774 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 06:13:43,783 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) [2021-12-17 06:13:43,795 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 [2021-12-17 06:13:43,807 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-17 06:13:43,807 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-17 06:13:43,807 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-17 06:13:43,808 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-17 06:13:43,846 INFO L236 CfgBuilder]: Building ICFG [2021-12-17 06:13:43,847 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-17 06:13:44,689 INFO L277 CfgBuilder]: Performing block encoding [2021-12-17 06:13:44,693 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-17 06:13:44,693 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-17 06:13:44,694 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 06:13:44 BoogieIcfgContainer [2021-12-17 06:13:44,694 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-17 06:13:44,696 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-17 06:13:44,696 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-17 06:13:44,697 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-17 06:13:44,698 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.12 06:13:43" (1/3) ... [2021-12-17 06:13:44,698 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ce38758 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 06:13:44, skipping insertion in model container [2021-12-17 06:13:44,698 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:13:43" (2/3) ... [2021-12-17 06:13:44,699 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ce38758 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 06:13:44, skipping insertion in model container [2021-12-17 06:13:44,699 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 06:13:44" (3/3) ... [2021-12-17 06:13:44,699 INFO L111 eAbstractionObserver]: Analyzing ICFG float3.c [2021-12-17 06:13:44,703 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-17 06:13:44,703 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-17 06:13:44,745 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-17 06:13:44,750 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-12-17 06:13:44,751 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-17 06:13:44,761 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 10 states have internal predecessors, (12), 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) [2021-12-17 06:13:44,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-12-17 06:13:44,764 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 06:13:44,765 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-17 06:13:44,765 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 06:13:44,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 06:13:44,769 INFO L85 PathProgramCache]: Analyzing trace with hash 1804965381, now seen corresponding path program 1 times [2021-12-17 06:13:44,776 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-17 06:13:44,777 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [885674567] [2021-12-17 06:13:44,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 06:13:44,777 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-17 06:13:44,777 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-17 06:13:44,780 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) [2021-12-17 06:13:44,783 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-12-17 06:13:44,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 06:13:44,926 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-17 06:13:44,939 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 06:13:45,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 06:13:45,153 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-17 06:13:45,154 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-17 06:13:45,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [885674567] [2021-12-17 06:13:45,154 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [885674567] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 06:13:45,158 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 06:13:45,159 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-17 06:13:45,160 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720587020] [2021-12-17 06:13:45,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 06:13:45,163 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-17 06:13:45,164 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-17 06:13:45,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-17 06:13:45,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-12-17 06:13:45,190 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 10 states have internal predecessors, (12), 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 6 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 5 states have internal predecessors, (7), 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) [2021-12-17 06:13:47,388 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.81s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-17 06:13:47,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 06:13:47,447 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2021-12-17 06:13:47,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 06:13:47,450 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 5 states have internal predecessors, (7), 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 7 [2021-12-17 06:13:47,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 06:13:47,455 INFO L225 Difference]: With dead ends: 22 [2021-12-17 06:13:47,455 INFO L226 Difference]: Without dead ends: 8 [2021-12-17 06:13:47,457 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-12-17 06:13:47,461 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 15 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-12-17 06:13:47,463 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 19 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2021-12-17 06:13:47,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2021-12-17 06:13:47,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2021-12-17 06:13:47,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.0) internal successors, (7), 7 states have internal predecessors, (7), 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) [2021-12-17 06:13:47,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 7 transitions. [2021-12-17 06:13:47,483 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 7 transitions. Word has length 7 [2021-12-17 06:13:47,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 06:13:47,483 INFO L470 AbstractCegarLoop]: Abstraction has 8 states and 7 transitions. [2021-12-17 06:13:47,483 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 5 states have internal predecessors, (7), 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) [2021-12-17 06:13:47,483 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 7 transitions. [2021-12-17 06:13:47,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-12-17 06:13:47,484 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 06:13:47,484 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-17 06:13:47,495 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-12-17 06:13:47,686 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-17 06:13:47,686 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 06:13:47,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 06:13:47,687 INFO L85 PathProgramCache]: Analyzing trace with hash 1806812423, now seen corresponding path program 1 times [2021-12-17 06:13:47,687 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-17 06:13:47,688 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [155163573] [2021-12-17 06:13:47,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 06:13:47,688 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-17 06:13:47,688 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-17 06:13:47,690 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-17 06:13:47,691 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-12-17 06:13:47,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 06:13:47,816 INFO L263 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-17 06:13:47,817 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 06:13:47,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 06:13:47,942 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-17 06:13:47,942 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-17 06:13:47,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [155163573] [2021-12-17 06:13:47,943 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [155163573] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 06:13:47,943 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 06:13:47,943 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-17 06:13:47,943 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065774409] [2021-12-17 06:13:47,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 06:13:47,944 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-17 06:13:47,944 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-17 06:13:47,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-17 06:13:47,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-12-17 06:13:47,945 INFO L87 Difference]: Start difference. First operand 8 states and 7 transitions. Second operand has 6 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 5 states have internal predecessors, (7), 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) [2021-12-17 06:13:48,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 06:13:48,707 INFO L93 Difference]: Finished difference Result 8 states and 7 transitions. [2021-12-17 06:13:48,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-17 06:13:48,707 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 5 states have internal predecessors, (7), 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 7 [2021-12-17 06:13:48,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 06:13:48,707 INFO L225 Difference]: With dead ends: 8 [2021-12-17 06:13:48,707 INFO L226 Difference]: Without dead ends: 0 [2021-12-17 06:13:48,708 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-12-17 06:13:48,709 INFO L933 BasicCegarLoop]: 3 mSDtfsCounter, 4 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-17 06:13:48,709 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 6 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-17 06:13:48,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-12-17 06:13:48,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-12-17 06:13:48,710 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) [2021-12-17 06:13:48,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-12-17 06:13:48,718 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 7 [2021-12-17 06:13:48,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 06:13:48,718 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-17 06:13:48,718 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 5 states have internal predecessors, (7), 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) [2021-12-17 06:13:48,718 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-12-17 06:13:48,718 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-12-17 06:13:48,720 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-17 06:13:48,738 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-12-17 06:13:48,932 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-17 06:13:48,934 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-12-17 06:13:48,936 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-12-17 06:13:48,936 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-12-17 06:13:48,936 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-12-17 06:13:48,936 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-12-17 06:13:48,936 INFO L858 garLoopResultBuilder]: For program point L26(line 26) no Hoare annotation was computed. [2021-12-17 06:13:48,937 INFO L858 garLoopResultBuilder]: For program point L26-1(line 26) no Hoare annotation was computed. [2021-12-17 06:13:48,937 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 26) no Hoare annotation was computed. [2021-12-17 06:13:48,937 INFO L858 garLoopResultBuilder]: For program point L17(lines 17 18) no Hoare annotation was computed. [2021-12-17 06:13:48,937 INFO L858 garLoopResultBuilder]: For program point L17-2(lines 17 18) no Hoare annotation was computed. [2021-12-17 06:13:48,937 INFO L858 garLoopResultBuilder]: For program point L13(lines 13 27) no Hoare annotation was computed. [2021-12-17 06:13:48,937 INFO L858 garLoopResultBuilder]: For program point L8(lines 8 11) no Hoare annotation was computed. [2021-12-17 06:13:48,940 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-12-17 06:13:48,942 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-17 06:13:48,948 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.12 06:13:48 BoogieIcfgContainer [2021-12-17 06:13:48,949 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-17 06:13:48,950 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-17 06:13:48,950 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-17 06:13:48,950 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-17 06:13:48,951 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 06:13:44" (3/4) ... [2021-12-17 06:13:48,952 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-12-17 06:13:48,959 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2021-12-17 06:13:48,960 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-12-17 06:13:48,960 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-12-17 06:13:48,960 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-12-17 06:13:48,985 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-12-17 06:13:48,986 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-17 06:13:48,986 INFO L158 Benchmark]: Toolchain (without parser) took 5432.21ms. Allocated memory was 65.0MB in the beginning and 79.7MB in the end (delta: 14.7MB). Free memory was 46.5MB in the beginning and 57.9MB in the end (delta: -11.3MB). Peak memory consumption was 4.9MB. Max. memory is 16.1GB. [2021-12-17 06:13:48,987 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 65.0MB. Free memory was 47.9MB in the beginning and 47.8MB in the end (delta: 48.7kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-17 06:13:48,987 INFO L158 Benchmark]: CACSL2BoogieTranslator took 144.30ms. Allocated memory is still 65.0MB. Free memory was 46.2MB in the beginning and 36.4MB in the end (delta: 9.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-17 06:13:48,988 INFO L158 Benchmark]: Boogie Procedure Inliner took 49.18ms. Allocated memory is still 65.0MB. Free memory was 36.4MB in the beginning and 49.0MB in the end (delta: -12.6MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-12-17 06:13:48,988 INFO L158 Benchmark]: Boogie Preprocessor took 12.71ms. Allocated memory is still 65.0MB. Free memory was 49.0MB in the beginning and 47.9MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-17 06:13:48,988 INFO L158 Benchmark]: RCFGBuilder took 931.45ms. Allocated memory is still 65.0MB. Free memory was 47.9MB in the beginning and 39.8MB in the end (delta: 8.1MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-12-17 06:13:48,988 INFO L158 Benchmark]: TraceAbstraction took 4253.75ms. Allocated memory was 65.0MB in the beginning and 79.7MB in the end (delta: 14.7MB). Free memory was 39.3MB in the beginning and 60.5MB in the end (delta: -21.1MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-17 06:13:48,989 INFO L158 Benchmark]: Witness Printer took 35.90ms. Allocated memory is still 79.7MB. Free memory was 60.0MB in the beginning and 57.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-17 06:13:48,990 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 65.0MB. Free memory was 47.9MB in the beginning and 47.8MB in the end (delta: 48.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 144.30ms. Allocated memory is still 65.0MB. Free memory was 46.2MB in the beginning and 36.4MB in the end (delta: 9.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 49.18ms. Allocated memory is still 65.0MB. Free memory was 36.4MB in the beginning and 49.0MB in the end (delta: -12.6MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 12.71ms. Allocated memory is still 65.0MB. Free memory was 49.0MB in the beginning and 47.9MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 931.45ms. Allocated memory is still 65.0MB. Free memory was 47.9MB in the beginning and 39.8MB in the end (delta: 8.1MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * TraceAbstraction took 4253.75ms. Allocated memory was 65.0MB in the beginning and 79.7MB in the end (delta: 14.7MB). Free memory was 39.3MB in the beginning and 60.5MB in the end (delta: -21.1MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 35.90ms. Allocated memory is still 79.7MB. Free memory was 60.0MB in the beginning and 57.9MB in the end (delta: 2.1MB). 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: 26]: 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, 11 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 4.2s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 3.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 19 SdHoareTripleChecker+Valid, 2.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 19 mSDsluCounter, 25 SdHoareTripleChecker+Invalid, 2.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 15 mSDsCounter, 4 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 28 IncrementalHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4 mSolverCounterUnsat, 10 mSDtfsCounter, 28 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11occurred in iteration=0, InterpolantAutomatonStates: 13, 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, 2 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, 0.2s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 14 NumberOfCodeBlocks, 14 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 12 ConstructedInterpolants, 0 QuantifiedInterpolants, 94 SizeOfPredicates, 6 NumberOfNonLiveVariables, 45 ConjunctsInSsa, 10 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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! [2021-12-17 06:13:49,048 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