./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-benchs/inv_square-2.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/float-benchs/inv_square-2.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 f1e69edbdce27e5f928ff7e136ee6812498ce7c35f38e45c8aa6d453823549eb --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-17 06:47:13,217 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-17 06:47:13,236 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-17 06:47:13,286 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-17 06:47:13,287 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-17 06:47:13,288 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-17 06:47:13,289 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-17 06:47:13,291 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-17 06:47:13,292 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-17 06:47:13,293 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-17 06:47:13,294 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-17 06:47:13,295 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-17 06:47:13,295 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-17 06:47:13,296 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-17 06:47:13,297 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-17 06:47:13,298 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-17 06:47:13,299 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-17 06:47:13,300 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-17 06:47:13,302 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-17 06:47:13,303 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-17 06:47:13,305 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-17 06:47:13,306 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-17 06:47:13,308 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-17 06:47:13,309 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-17 06:47:13,311 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-17 06:47:13,312 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-17 06:47:13,312 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-17 06:47:13,313 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-17 06:47:13,314 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-17 06:47:13,314 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-17 06:47:13,315 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-17 06:47:13,315 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-17 06:47:13,316 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-17 06:47:13,317 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-17 06:47:13,318 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-17 06:47:13,318 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-17 06:47:13,319 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-17 06:47:13,319 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-17 06:47:13,319 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-17 06:47:13,320 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-17 06:47:13,320 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-17 06:47:13,322 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-17 06:47:13,346 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-17 06:47:13,347 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-17 06:47:13,347 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-17 06:47:13,348 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-17 06:47:13,349 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-17 06:47:13,349 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-17 06:47:13,349 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-17 06:47:13,350 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-17 06:47:13,350 INFO L138 SettingsManager]: * Use SBE=true [2021-12-17 06:47:13,351 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-17 06:47:13,351 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-17 06:47:13,352 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-17 06:47:13,352 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-17 06:47:13,352 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-17 06:47:13,352 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-17 06:47:13,352 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-17 06:47:13,353 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-17 06:47:13,353 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-17 06:47:13,353 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-17 06:47:13,353 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-17 06:47:13,353 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-17 06:47:13,354 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-17 06:47:13,354 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-17 06:47:13,354 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-17 06:47:13,354 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 06:47:13,354 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-17 06:47:13,355 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-17 06:47:13,356 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-17 06:47:13,356 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-17 06:47:13,356 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-17 06:47:13,356 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-17 06:47:13,357 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-17 06:47:13,357 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-17 06:47:13,357 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-17 06:47:13,357 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f1e69edbdce27e5f928ff7e136ee6812498ce7c35f38e45c8aa6d453823549eb [2021-12-17 06:47:13,578 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-17 06:47:13,598 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-17 06:47:13,601 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-17 06:47:13,602 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-17 06:47:13,602 INFO L275 PluginConnector]: CDTParser initialized [2021-12-17 06:47:13,604 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/inv_square-2.c [2021-12-17 06:47:13,698 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2fd18aa41/2dbc40e3434f4c2aa54633e06972e59d/FLAG5c9c9e406 [2021-12-17 06:47:14,090 INFO L306 CDTParser]: Found 1 translation units. [2021-12-17 06:47:14,090 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/inv_square-2.c [2021-12-17 06:47:14,095 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2fd18aa41/2dbc40e3434f4c2aa54633e06972e59d/FLAG5c9c9e406 [2021-12-17 06:47:14,503 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2fd18aa41/2dbc40e3434f4c2aa54633e06972e59d [2021-12-17 06:47:14,505 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-17 06:47:14,507 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-17 06:47:14,515 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-17 06:47:14,515 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-17 06:47:14,518 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-17 06:47:14,519 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 06:47:14" (1/1) ... [2021-12-17 06:47:14,520 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24593672 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:47:14, skipping insertion in model container [2021-12-17 06:47:14,520 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 06:47:14" (1/1) ... [2021-12-17 06:47:14,529 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-17 06:47:14,542 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-17 06:47:14,673 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/float-benchs/inv_square-2.c[484,497] [2021-12-17 06:47:14,685 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 06:47:14,692 INFO L203 MainTranslator]: Completed pre-run [2021-12-17 06:47:14,703 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/float-benchs/inv_square-2.c[484,497] [2021-12-17 06:47:14,706 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 06:47:14,717 INFO L208 MainTranslator]: Completed translation [2021-12-17 06:47:14,718 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:47:14 WrapperNode [2021-12-17 06:47:14,718 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-17 06:47:14,719 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-17 06:47:14,720 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-17 06:47:14,720 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-17 06:47:14,727 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:47:14" (1/1) ... [2021-12-17 06:47:14,733 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:47:14" (1/1) ... [2021-12-17 06:47:14,747 INFO L137 Inliner]: procedures = 14, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 31 [2021-12-17 06:47:14,747 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-17 06:47:14,748 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-17 06:47:14,748 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-17 06:47:14,748 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-17 06:47:14,755 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:47:14" (1/1) ... [2021-12-17 06:47:14,755 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:47:14" (1/1) ... [2021-12-17 06:47:14,756 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:47:14" (1/1) ... [2021-12-17 06:47:14,757 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:47:14" (1/1) ... [2021-12-17 06:47:14,760 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:47:14" (1/1) ... [2021-12-17 06:47:14,762 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:47:14" (1/1) ... [2021-12-17 06:47:14,762 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:47:14" (1/1) ... [2021-12-17 06:47:14,764 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-17 06:47:14,764 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-17 06:47:14,765 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-17 06:47:14,765 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-17 06:47:14,766 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:47:14" (1/1) ... [2021-12-17 06:47:14,772 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 06:47:14,781 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 06:47:14,801 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 06:47:14,822 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 06:47:14,833 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-17 06:47:14,834 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-17 06:47:14,834 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-17 06:47:14,834 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-17 06:47:14,882 INFO L236 CfgBuilder]: Building ICFG [2021-12-17 06:47:14,884 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-17 06:47:14,995 INFO L277 CfgBuilder]: Performing block encoding [2021-12-17 06:47:15,002 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-17 06:47:15,002 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-17 06:47:15,004 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 06:47:15 BoogieIcfgContainer [2021-12-17 06:47:15,004 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-17 06:47:15,006 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-17 06:47:15,006 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-17 06:47:15,009 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-17 06:47:15,010 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.12 06:47:14" (1/3) ... [2021-12-17 06:47:15,011 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e181eac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 06:47:15, skipping insertion in model container [2021-12-17 06:47:15,011 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:47:14" (2/3) ... [2021-12-17 06:47:15,012 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e181eac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 06:47:15, skipping insertion in model container [2021-12-17 06:47:15,012 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 06:47:15" (3/3) ... [2021-12-17 06:47:15,013 INFO L111 eAbstractionObserver]: Analyzing ICFG inv_square-2.c [2021-12-17 06:47:15,018 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-17 06:47:15,019 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-17 06:47:15,055 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-17 06:47:15,062 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 06:47:15,062 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-17 06:47:15,073 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 12 states have internal predecessors, (15), 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 06:47:15,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-12-17 06:47:15,078 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 06:47:15,078 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-17 06:47:15,079 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 06:47:15,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 06:47:15,085 INFO L85 PathProgramCache]: Analyzing trace with hash 1804966375, now seen corresponding path program 1 times [2021-12-17 06:47:15,093 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 06:47:15,094 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438379810] [2021-12-17 06:47:15,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 06:47:15,095 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 06:47:15,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 06:47:15,223 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 06:47:15,224 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 06:47:15,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438379810] [2021-12-17 06:47:15,225 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438379810] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 06:47:15,225 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 06:47:15,226 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-17 06:47:15,227 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747562482] [2021-12-17 06:47:15,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 06:47:15,232 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-17 06:47:15,232 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 06:47:15,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-17 06:47:15,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-17 06:47:15,270 INFO L87 Difference]: Start difference. First operand has 13 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 12 states have internal predecessors, (15), 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 2 states, 2 states have (on average 3.5) internal successors, (7), 2 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 06:47:15,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 06:47:15,283 INFO L93 Difference]: Finished difference Result 23 states and 26 transitions. [2021-12-17 06:47:15,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-17 06:47:15,285 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 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 06:47:15,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 06:47:15,295 INFO L225 Difference]: With dead ends: 23 [2021-12-17 06:47:15,295 INFO L226 Difference]: Without dead ends: 8 [2021-12-17 06:47:15,298 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-17 06:47:15,303 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 06:47:15,305 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 06:47:15,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2021-12-17 06:47:15,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2021-12-17 06:47:15,330 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 06:47:15,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 7 transitions. [2021-12-17 06:47:15,332 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 7 transitions. Word has length 7 [2021-12-17 06:47:15,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 06:47:15,332 INFO L470 AbstractCegarLoop]: Abstraction has 8 states and 7 transitions. [2021-12-17 06:47:15,333 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 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 06:47:15,333 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 7 transitions. [2021-12-17 06:47:15,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-12-17 06:47:15,333 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 06:47:15,334 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-17 06:47:15,334 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-17 06:47:15,335 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 06:47:15,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 06:47:15,339 INFO L85 PathProgramCache]: Analyzing trace with hash 1806813417, now seen corresponding path program 1 times [2021-12-17 06:47:15,339 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 06:47:15,339 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384010062] [2021-12-17 06:47:15,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 06:47:15,340 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 06:47:15,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-17 06:47:15,366 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-17 06:47:15,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-17 06:47:15,395 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-17 06:47:15,395 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-17 06:47:15,397 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-17 06:47:15,398 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-17 06:47:15,401 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-12-17 06:47:15,403 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-17 06:47:15,441 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.12 06:47:15 BoogieIcfgContainer [2021-12-17 06:47:15,441 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-17 06:47:15,442 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-17 06:47:15,442 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-17 06:47:15,442 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-17 06:47:15,442 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 06:47:15" (3/4) ... [2021-12-17 06:47:15,445 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-12-17 06:47:15,445 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-17 06:47:15,446 INFO L158 Benchmark]: Toolchain (without parser) took 938.53ms. Allocated memory was 83.9MB in the beginning and 107.0MB in the end (delta: 23.1MB). Free memory was 54.1MB in the beginning and 75.4MB in the end (delta: -21.3MB). Peak memory consumption was 1.2MB. Max. memory is 16.1GB. [2021-12-17 06:47:15,446 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 83.9MB. Free memory is still 40.2MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-17 06:47:15,446 INFO L158 Benchmark]: CACSL2BoogieTranslator took 203.86ms. Allocated memory was 83.9MB in the beginning and 107.0MB in the end (delta: 23.1MB). Free memory was 54.1MB in the beginning and 83.9MB in the end (delta: -29.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-17 06:47:15,447 INFO L158 Benchmark]: Boogie Procedure Inliner took 28.20ms. Allocated memory is still 107.0MB. Free memory was 83.9MB in the beginning and 82.6MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-17 06:47:15,447 INFO L158 Benchmark]: Boogie Preprocessor took 15.52ms. Allocated memory is still 107.0MB. Free memory was 82.6MB in the beginning and 81.4MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-17 06:47:15,448 INFO L158 Benchmark]: RCFGBuilder took 240.09ms. Allocated memory is still 107.0MB. Free memory was 81.4MB in the beginning and 73.0MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-17 06:47:15,448 INFO L158 Benchmark]: TraceAbstraction took 434.97ms. Allocated memory is still 107.0MB. Free memory was 72.7MB in the beginning and 76.0MB in the end (delta: -3.3MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-17 06:47:15,449 INFO L158 Benchmark]: Witness Printer took 3.25ms. Allocated memory is still 107.0MB. Free memory was 76.0MB in the beginning and 75.4MB in the end (delta: 529.5kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-17 06:47:15,467 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 83.9MB. Free memory is still 40.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 203.86ms. Allocated memory was 83.9MB in the beginning and 107.0MB in the end (delta: 23.1MB). Free memory was 54.1MB in the beginning and 83.9MB in the end (delta: -29.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 28.20ms. Allocated memory is still 107.0MB. Free memory was 83.9MB in the beginning and 82.6MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 15.52ms. Allocated memory is still 107.0MB. Free memory was 82.6MB in the beginning and 81.4MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 240.09ms. Allocated memory is still 107.0MB. Free memory was 81.4MB in the beginning and 73.0MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 434.97ms. Allocated memory is still 107.0MB. Free memory was 72.7MB in the beginning and 76.0MB in the end (delta: -3.3MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 3.25ms. Allocated memory is still 107.0MB. Free memory was 76.0MB in the beginning and 75.4MB in the end (delta: 529.5kB). 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: 13]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 22, overapproximation of someBinaryArithmeticFLOAToperation at line 23. Possible FailurePath: [L17] float x, y, z; [L19] x = __VERIFIER_nondet_float() [L20] CALL assume_abort_if_not(x >= -1.f && x <= 1.f) [L11] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L20] RET assume_abort_if_not(x >= -1.f && x <= 1.f) [L22] COND TRUE x <= -1e-20f || x >= 1e-20f [L23] y = x * x [L24] CALL __VERIFIER_assert(y != 0.f) [L13] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L13] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 13 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 13 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 0 IncrementalHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 13 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 14 NumberOfCodeBlocks, 14 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 6 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-12-17 06:47:15,515 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/float-benchs/inv_square-2.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 f1e69edbdce27e5f928ff7e136ee6812498ce7c35f38e45c8aa6d453823549eb --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-17 06:47:17,485 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-17 06:47:17,488 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-17 06:47:17,527 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-17 06:47:17,528 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-17 06:47:17,531 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-17 06:47:17,532 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-17 06:47:17,536 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-17 06:47:17,538 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-17 06:47:17,542 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-17 06:47:17,543 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-17 06:47:17,547 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-17 06:47:17,547 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-17 06:47:17,549 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-17 06:47:17,551 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-17 06:47:17,554 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-17 06:47:17,555 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-17 06:47:17,556 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-17 06:47:17,559 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-17 06:47:17,565 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-17 06:47:17,567 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-17 06:47:17,567 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-17 06:47:17,569 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-17 06:47:17,570 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-17 06:47:17,576 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-17 06:47:17,576 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-17 06:47:17,576 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-17 06:47:17,578 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-17 06:47:17,579 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-17 06:47:17,579 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-17 06:47:17,579 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-17 06:47:17,580 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-17 06:47:17,581 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-17 06:47:17,582 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-17 06:47:17,583 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-17 06:47:17,583 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-17 06:47:17,584 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-17 06:47:17,584 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-17 06:47:17,584 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-17 06:47:17,586 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-17 06:47:17,586 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-17 06:47:17,587 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-12-17 06:47:17,618 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-17 06:47:17,619 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-17 06:47:17,619 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-17 06:47:17,620 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-17 06:47:17,621 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-17 06:47:17,621 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-17 06:47:17,622 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-17 06:47:17,622 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-17 06:47:17,622 INFO L138 SettingsManager]: * Use SBE=true [2021-12-17 06:47:17,623 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-17 06:47:17,623 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-17 06:47:17,624 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-17 06:47:17,624 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-17 06:47:17,624 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-17 06:47:17,624 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-17 06:47:17,624 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-17 06:47:17,625 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-17 06:47:17,625 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-17 06:47:17,625 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-17 06:47:17,630 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-17 06:47:17,630 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-17 06:47:17,631 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-17 06:47:17,631 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-17 06:47:17,631 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-17 06:47:17,631 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-17 06:47:17,631 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-17 06:47:17,632 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 06:47:17,632 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-17 06:47:17,635 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-17 06:47:17,635 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-17 06:47:17,635 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-17 06:47:17,635 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-17 06:47:17,636 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-17 06:47:17,636 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-17 06:47:17,636 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-17 06:47:17,636 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-17 06:47:17,636 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-17 06:47:17,637 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f1e69edbdce27e5f928ff7e136ee6812498ce7c35f38e45c8aa6d453823549eb [2021-12-17 06:47:17,946 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-17 06:47:17,968 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-17 06:47:17,971 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-17 06:47:17,972 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-17 06:47:17,972 INFO L275 PluginConnector]: CDTParser initialized [2021-12-17 06:47:17,973 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/inv_square-2.c [2021-12-17 06:47:18,027 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/23669748b/1ce517629d14412b8cc64b7572ba5b2c/FLAG6999cf6d2 [2021-12-17 06:47:18,454 INFO L306 CDTParser]: Found 1 translation units. [2021-12-17 06:47:18,455 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/inv_square-2.c [2021-12-17 06:47:18,460 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/23669748b/1ce517629d14412b8cc64b7572ba5b2c/FLAG6999cf6d2 [2021-12-17 06:47:18,471 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/23669748b/1ce517629d14412b8cc64b7572ba5b2c [2021-12-17 06:47:18,473 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-17 06:47:18,474 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-17 06:47:18,475 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-17 06:47:18,475 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-17 06:47:18,482 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-17 06:47:18,482 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 06:47:18" (1/1) ... [2021-12-17 06:47:18,484 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67992f3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:47:18, skipping insertion in model container [2021-12-17 06:47:18,484 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 06:47:18" (1/1) ... [2021-12-17 06:47:18,492 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-17 06:47:18,508 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-17 06:47:18,662 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/float-benchs/inv_square-2.c[484,497] [2021-12-17 06:47:18,676 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 06:47:18,687 INFO L203 MainTranslator]: Completed pre-run [2021-12-17 06:47:18,702 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/float-benchs/inv_square-2.c[484,497] [2021-12-17 06:47:18,707 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 06:47:18,741 INFO L208 MainTranslator]: Completed translation [2021-12-17 06:47:18,757 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:47:18 WrapperNode [2021-12-17 06:47:18,757 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-17 06:47:18,759 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-17 06:47:18,759 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-17 06:47:18,759 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-17 06:47:18,765 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:47:18" (1/1) ... [2021-12-17 06:47:18,775 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:47:18" (1/1) ... [2021-12-17 06:47:18,790 INFO L137 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 32 [2021-12-17 06:47:18,790 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-17 06:47:18,791 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-17 06:47:18,791 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-17 06:47:18,792 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-17 06:47:18,798 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:47:18" (1/1) ... [2021-12-17 06:47:18,799 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:47:18" (1/1) ... [2021-12-17 06:47:18,809 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:47:18" (1/1) ... [2021-12-17 06:47:18,809 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:47:18" (1/1) ... [2021-12-17 06:47:18,819 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:47:18" (1/1) ... [2021-12-17 06:47:18,825 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:47:18" (1/1) ... [2021-12-17 06:47:18,827 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:47:18" (1/1) ... [2021-12-17 06:47:18,829 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-17 06:47:18,832 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-17 06:47:18,832 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-17 06:47:18,833 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-17 06:47:18,833 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:47:18" (1/1) ... [2021-12-17 06:47:18,839 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 06:47:18,848 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 06:47:18,860 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 06:47:18,886 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 06:47:18,902 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-17 06:47:18,903 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-17 06:47:18,903 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-17 06:47:18,903 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-17 06:47:18,966 INFO L236 CfgBuilder]: Building ICFG [2021-12-17 06:47:18,968 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-17 06:47:19,899 INFO L277 CfgBuilder]: Performing block encoding [2021-12-17 06:47:19,904 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-17 06:47:19,904 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-17 06:47:19,905 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 06:47:19 BoogieIcfgContainer [2021-12-17 06:47:19,905 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-17 06:47:19,906 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-17 06:47:19,906 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-17 06:47:19,909 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-17 06:47:19,909 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.12 06:47:18" (1/3) ... [2021-12-17 06:47:19,910 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@598a0d3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 06:47:19, skipping insertion in model container [2021-12-17 06:47:19,910 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 06:47:18" (2/3) ... [2021-12-17 06:47:19,910 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@598a0d3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 06:47:19, skipping insertion in model container [2021-12-17 06:47:19,910 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 06:47:19" (3/3) ... [2021-12-17 06:47:19,912 INFO L111 eAbstractionObserver]: Analyzing ICFG inv_square-2.c [2021-12-17 06:47:19,916 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-17 06:47:19,916 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-17 06:47:19,955 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-17 06:47:19,960 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 06:47:19,960 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-17 06:47:19,969 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 12 states have internal predecessors, (15), 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 06:47:19,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-12-17 06:47:19,972 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 06:47:19,973 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-17 06:47:19,973 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 06:47:19,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 06:47:19,978 INFO L85 PathProgramCache]: Analyzing trace with hash 1804966375, now seen corresponding path program 1 times [2021-12-17 06:47:19,988 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-17 06:47:19,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [925363737] [2021-12-17 06:47:19,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 06:47:19,989 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-17 06:47:19,989 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-17 06:47:19,995 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 06:47:20,038 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 06:47:20,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 06:47:20,164 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 1 conjunts are in the unsatisfiable core [2021-12-17 06:47:20,167 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 06:47:20,205 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 06:47:20,206 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-17 06:47:20,206 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-17 06:47:20,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [925363737] [2021-12-17 06:47:20,207 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [925363737] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 06:47:20,207 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 06:47:20,207 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-17 06:47:20,209 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127531134] [2021-12-17 06:47:20,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 06:47:20,212 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-17 06:47:20,213 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-17 06:47:20,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-17 06:47:20,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-17 06:47:20,235 INFO L87 Difference]: Start difference. First operand has 13 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 12 states have internal predecessors, (15), 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 2 states, 2 states have (on average 3.5) internal successors, (7), 2 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 06:47:20,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 06:47:20,248 INFO L93 Difference]: Finished difference Result 23 states and 26 transitions. [2021-12-17 06:47:20,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-17 06:47:20,250 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 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 06:47:20,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 06:47:20,269 INFO L225 Difference]: With dead ends: 23 [2021-12-17 06:47:20,270 INFO L226 Difference]: Without dead ends: 8 [2021-12-17 06:47:20,272 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-17 06:47:20,275 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 06:47:20,275 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 06:47:20,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2021-12-17 06:47:20,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2021-12-17 06:47:20,312 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 06:47:20,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 7 transitions. [2021-12-17 06:47:20,314 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 7 transitions. Word has length 7 [2021-12-17 06:47:20,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 06:47:20,315 INFO L470 AbstractCegarLoop]: Abstraction has 8 states and 7 transitions. [2021-12-17 06:47:20,315 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 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 06:47:20,315 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 7 transitions. [2021-12-17 06:47:20,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-12-17 06:47:20,316 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 06:47:20,317 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-17 06:47:20,329 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 06:47:20,528 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 06:47:20,529 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 06:47:20,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 06:47:20,530 INFO L85 PathProgramCache]: Analyzing trace with hash 1806813417, now seen corresponding path program 1 times [2021-12-17 06:47:20,530 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-17 06:47:20,530 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [48860333] [2021-12-17 06:47:20,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 06:47:20,530 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-17 06:47:20,531 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-17 06:47:20,532 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 06:47:20,533 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 06:47:20,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 06:47:20,617 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-17 06:47:20,618 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 06:47:21,865 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 06:47:21,865 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-17 06:47:21,866 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-17 06:47:21,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [48860333] [2021-12-17 06:47:21,866 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [48860333] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 06:47:21,866 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 06:47:21,866 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-17 06:47:21,866 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851865089] [2021-12-17 06:47:21,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 06:47:21,868 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-17 06:47:21,868 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-17 06:47:21,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-17 06:47:21,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-17 06:47:21,869 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 06:47:22,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 06:47:22,219 INFO L93 Difference]: Finished difference Result 8 states and 7 transitions. [2021-12-17 06:47:22,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-17 06:47:22,219 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 06:47:22,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 06:47:22,219 INFO L225 Difference]: With dead ends: 8 [2021-12-17 06:47:22,219 INFO L226 Difference]: Without dead ends: 0 [2021-12-17 06:47:22,220 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-12-17 06:47:22,221 INFO L933 BasicCegarLoop]: 2 mSDtfsCounter, 5 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-17 06:47:22,222 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 4 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-17 06:47:22,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-12-17 06:47:22,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-12-17 06:47:22,223 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 06:47:22,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-12-17 06:47:22,223 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 7 [2021-12-17 06:47:22,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 06:47:22,223 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-17 06:47:22,224 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 06:47:22,224 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-12-17 06:47:22,224 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-12-17 06:47:22,226 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-17 06:47:22,239 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 06:47:22,427 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 06:47:22,429 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-12-17 06:47:22,434 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-12-17 06:47:22,434 INFO L861 garLoopResultBuilder]: At program point L27(lines 15 28) the Hoare annotation is: true [2021-12-17 06:47:22,434 INFO L858 garLoopResultBuilder]: For program point L13(line 13) no Hoare annotation was computed. [2021-12-17 06:47:22,434 INFO L858 garLoopResultBuilder]: For program point L13-1(line 13) no Hoare annotation was computed. [2021-12-17 06:47:22,435 INFO L858 garLoopResultBuilder]: For program point L11(line 11) no Hoare annotation was computed. [2021-12-17 06:47:22,435 INFO L861 garLoopResultBuilder]: At program point L13-3(line 13) the Hoare annotation is: true [2021-12-17 06:47:22,435 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-12-17 06:47:22,435 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-12-17 06:47:22,435 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-12-17 06:47:22,436 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2021-12-17 06:47:22,436 INFO L858 garLoopResultBuilder]: For program point L22(lines 22 26) no Hoare annotation was computed. [2021-12-17 06:47:22,436 INFO L858 garLoopResultBuilder]: For program point L22-2(lines 22 26) no Hoare annotation was computed. [2021-12-17 06:47:22,436 INFO L858 garLoopResultBuilder]: For program point L10(lines 10 12) no Hoare annotation was computed. [2021-12-17 06:47:22,439 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-12-17 06:47:22,440 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-17 06:47:22,450 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.12 06:47:22 BoogieIcfgContainer [2021-12-17 06:47:22,451 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-17 06:47:22,451 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-17 06:47:22,452 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-17 06:47:22,452 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-17 06:47:22,452 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 06:47:19" (3/4) ... [2021-12-17 06:47:22,455 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-12-17 06:47:22,464 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2021-12-17 06:47:22,465 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-12-17 06:47:22,465 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-12-17 06:47:22,465 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-12-17 06:47:22,501 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-12-17 06:47:22,502 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-17 06:47:22,503 INFO L158 Benchmark]: Toolchain (without parser) took 4028.81ms. Allocated memory was 60.8MB in the beginning and 73.4MB in the end (delta: 12.6MB). Free memory was 40.8MB in the beginning and 40.0MB in the end (delta: 803.0kB). Peak memory consumption was 13.6MB. Max. memory is 16.1GB. [2021-12-17 06:47:22,504 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 60.8MB. Free memory was 42.1MB in the beginning and 42.0MB in the end (delta: 44.4kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-17 06:47:22,504 INFO L158 Benchmark]: CACSL2BoogieTranslator took 282.31ms. Allocated memory is still 60.8MB. Free memory was 40.6MB in the beginning and 44.0MB in the end (delta: -3.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-12-17 06:47:22,504 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.72ms. Allocated memory is still 60.8MB. Free memory was 44.0MB in the beginning and 42.6MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-17 06:47:22,504 INFO L158 Benchmark]: Boogie Preprocessor took 39.79ms. Allocated memory is still 60.8MB. Free memory was 42.6MB in the beginning and 41.3MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-17 06:47:22,505 INFO L158 Benchmark]: RCFGBuilder took 1073.87ms. Allocated memory is still 60.8MB. Free memory was 41.3MB in the beginning and 33.2MB in the end (delta: 8.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-17 06:47:22,505 INFO L158 Benchmark]: TraceAbstraction took 2544.38ms. Allocated memory was 60.8MB in the beginning and 73.4MB in the end (delta: 12.6MB). Free memory was 32.6MB in the beginning and 42.4MB in the end (delta: -9.8MB). Peak memory consumption was 4.1MB. Max. memory is 16.1GB. [2021-12-17 06:47:22,506 INFO L158 Benchmark]: Witness Printer took 50.98ms. Allocated memory is still 73.4MB. Free memory was 42.1MB in the beginning and 40.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-17 06:47:22,508 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 60.8MB. Free memory was 42.1MB in the beginning and 42.0MB in the end (delta: 44.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 282.31ms. Allocated memory is still 60.8MB. Free memory was 40.6MB in the beginning and 44.0MB in the end (delta: -3.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 31.72ms. Allocated memory is still 60.8MB. Free memory was 44.0MB in the beginning and 42.6MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 39.79ms. Allocated memory is still 60.8MB. Free memory was 42.6MB in the beginning and 41.3MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 1073.87ms. Allocated memory is still 60.8MB. Free memory was 41.3MB in the beginning and 33.2MB in the end (delta: 8.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 2544.38ms. Allocated memory was 60.8MB in the beginning and 73.4MB in the end (delta: 12.6MB). Free memory was 32.6MB in the beginning and 42.4MB in the end (delta: -9.8MB). Peak memory consumption was 4.1MB. Max. memory is 16.1GB. * Witness Printer took 50.98ms. Allocated memory is still 73.4MB. Free memory was 42.1MB in the beginning and 40.0MB 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: 13]: 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, 13 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2.5s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 5 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 5 mSDsluCounter, 17 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 8 IncrementalHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 15 mSDtfsCounter, 8 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13occurred in iteration=0, InterpolantAutomatonStates: 8, 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, 2 LocationsWithAnnotation, 2 PreInvPairs, 4 NumberOfFragments, 2 HoareAnnotationTreeSize, 2 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 14 NumberOfCodeBlocks, 14 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 12 ConstructedInterpolants, 0 QuantifiedInterpolants, 81 SizeOfPredicates, 6 NumberOfNonLiveVariables, 50 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 - InvariantResult [Line: 15]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 13]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2021-12-17 06:47:22,566 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