./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/square_5+soft_float_5a.c.cil.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/combinations/square_5+soft_float_5a.c.cil.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 6ee45b2e6127ec54444d337a03ade6c3159ccf77c3fcc0ba8ab9ed7cc07fa235 --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-16 02:37:57,413 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-16 02:37:57,415 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-16 02:37:57,451 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-16 02:37:57,451 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-16 02:37:57,454 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-16 02:37:57,455 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-16 02:37:57,459 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-16 02:37:57,461 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-16 02:37:57,465 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-16 02:37:57,466 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-16 02:37:57,467 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-16 02:37:57,467 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-16 02:37:57,470 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-16 02:37:57,471 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-16 02:37:57,477 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-16 02:37:57,477 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-16 02:37:57,478 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-16 02:37:57,480 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-16 02:37:57,485 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-16 02:37:57,486 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-16 02:37:57,487 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-16 02:37:57,488 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-16 02:37:57,489 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-16 02:37:57,495 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-16 02:37:57,495 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-16 02:37:57,495 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-16 02:37:57,496 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-16 02:37:57,497 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-16 02:37:57,497 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-16 02:37:57,498 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-16 02:37:57,499 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-16 02:37:57,500 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-16 02:37:57,501 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-16 02:37:57,502 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-16 02:37:57,502 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-16 02:37:57,502 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-16 02:37:57,503 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-16 02:37:57,503 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-16 02:37:57,503 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-16 02:37:57,504 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-16 02:37:57,508 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-16 02:37:57,540 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-16 02:37:57,540 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-16 02:37:57,541 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-16 02:37:57,541 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-16 02:37:57,542 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-16 02:37:57,542 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-16 02:37:57,543 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-16 02:37:57,543 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-16 02:37:57,543 INFO L138 SettingsManager]: * Use SBE=true [2021-12-16 02:37:57,544 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-16 02:37:57,544 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-16 02:37:57,544 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-16 02:37:57,545 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-16 02:37:57,545 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-16 02:37:57,545 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-16 02:37:57,545 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-16 02:37:57,545 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-16 02:37:57,545 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-16 02:37:57,546 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-16 02:37:57,546 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-16 02:37:57,546 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-16 02:37:57,546 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-16 02:37:57,546 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-16 02:37:57,547 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-16 02:37:57,547 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 02:37:57,547 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-16 02:37:57,547 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-16 02:37:57,547 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-16 02:37:57,548 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-16 02:37:57,548 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-16 02:37:57,548 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-16 02:37:57,548 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-16 02:37:57,548 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-16 02:37:57,549 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-16 02:37:57,549 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6ee45b2e6127ec54444d337a03ade6c3159ccf77c3fcc0ba8ab9ed7cc07fa235 [2021-12-16 02:37:57,750 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-16 02:37:57,770 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-16 02:37:57,773 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-16 02:37:57,774 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-16 02:37:57,774 INFO L275 PluginConnector]: CDTParser initialized [2021-12-16 02:37:57,775 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/square_5+soft_float_5a.c.cil.c [2021-12-16 02:37:57,828 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/320641d92/fd4ca1cc90234d2c831d86ce84d3063c/FLAG3e4755d50 [2021-12-16 02:37:58,230 INFO L306 CDTParser]: Found 1 translation units. [2021-12-16 02:37:58,231 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/square_5+soft_float_5a.c.cil.c [2021-12-16 02:37:58,240 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/320641d92/fd4ca1cc90234d2c831d86ce84d3063c/FLAG3e4755d50 [2021-12-16 02:37:58,250 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/320641d92/fd4ca1cc90234d2c831d86ce84d3063c [2021-12-16 02:37:58,253 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-16 02:37:58,254 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-16 02:37:58,255 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-16 02:37:58,255 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-16 02:37:58,258 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-16 02:37:58,258 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 02:37:58" (1/1) ... [2021-12-16 02:37:58,259 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38898a83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:37:58, skipping insertion in model container [2021-12-16 02:37:58,259 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 02:37:58" (1/1) ... [2021-12-16 02:37:58,265 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-16 02:37:58,289 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-16 02:37:58,426 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/combinations/square_5+soft_float_5a.c.cil.c[1998,2011] [2021-12-16 02:37:58,430 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/combinations/square_5+soft_float_5a.c.cil.c[2367,2380] [2021-12-16 02:37:58,482 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 02:37:58,498 INFO L203 MainTranslator]: Completed pre-run [2021-12-16 02:37:58,509 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/combinations/square_5+soft_float_5a.c.cil.c[1998,2011] [2021-12-16 02:37:58,510 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/combinations/square_5+soft_float_5a.c.cil.c[2367,2380] [2021-12-16 02:37:58,535 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 02:37:58,551 INFO L208 MainTranslator]: Completed translation [2021-12-16 02:37:58,552 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:37:58 WrapperNode [2021-12-16 02:37:58,552 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-16 02:37:58,553 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-16 02:37:58,553 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-16 02:37:58,553 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-16 02:37:58,559 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:37:58" (1/1) ... [2021-12-16 02:37:58,566 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:37:58" (1/1) ... [2021-12-16 02:37:58,587 INFO L137 Inliner]: procedures = 27, calls = 17, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 133 [2021-12-16 02:37:58,588 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-16 02:37:58,588 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-16 02:37:58,589 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-16 02:37:58,589 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-16 02:37:58,598 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:37:58" (1/1) ... [2021-12-16 02:37:58,599 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:37:58" (1/1) ... [2021-12-16 02:37:58,601 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:37:58" (1/1) ... [2021-12-16 02:37:58,602 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:37:58" (1/1) ... [2021-12-16 02:37:58,609 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:37:58" (1/1) ... [2021-12-16 02:37:58,626 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:37:58" (1/1) ... [2021-12-16 02:37:58,627 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:37:58" (1/1) ... [2021-12-16 02:37:58,629 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-16 02:37:58,630 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-16 02:37:58,630 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-16 02:37:58,630 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-16 02:37:58,631 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:37:58" (1/1) ... [2021-12-16 02:37:58,652 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 02:37:58,660 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 02:37:58,669 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) [2021-12-16 02:37:58,671 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 [2021-12-16 02:37:58,696 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-16 02:37:58,697 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2021-12-16 02:37:58,697 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2021-12-16 02:37:58,697 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-16 02:37:58,697 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-16 02:37:58,697 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-16 02:37:58,697 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-16 02:37:58,697 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-16 02:37:58,754 INFO L236 CfgBuilder]: Building ICFG [2021-12-16 02:37:58,755 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-16 02:37:59,002 INFO L277 CfgBuilder]: Performing block encoding [2021-12-16 02:37:59,009 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-16 02:37:59,009 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-16 02:37:59,010 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 02:37:59 BoogieIcfgContainer [2021-12-16 02:37:59,010 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-16 02:37:59,012 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-16 02:37:59,012 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-16 02:37:59,015 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-16 02:37:59,015 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 02:37:58" (1/3) ... [2021-12-16 02:37:59,016 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cbf2635 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 02:37:59, skipping insertion in model container [2021-12-16 02:37:59,016 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:37:58" (2/3) ... [2021-12-16 02:37:59,016 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cbf2635 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 02:37:59, skipping insertion in model container [2021-12-16 02:37:59,016 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 02:37:59" (3/3) ... [2021-12-16 02:37:59,017 INFO L111 eAbstractionObserver]: Analyzing ICFG square_5+soft_float_5a.c.cil.c [2021-12-16 02:37:59,021 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-16 02:37:59,022 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-16 02:37:59,075 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-16 02:37:59,088 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 [2021-12-16 02:37:59,088 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-16 02:37:59,116 INFO L276 IsEmpty]: Start isEmpty. Operand has 61 states, 51 states have (on average 1.5490196078431373) internal successors, (79), 54 states have internal predecessors, (79), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-12-16 02:37:59,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-12-16 02:37:59,119 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:37:59,120 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:37:59,130 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:37:59,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:37:59,135 INFO L85 PathProgramCache]: Analyzing trace with hash -548115930, now seen corresponding path program 1 times [2021-12-16 02:37:59,143 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:37:59,143 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832445790] [2021-12-16 02:37:59,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:37:59,145 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:37:59,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:37:59,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:37:59,281 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:37:59,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832445790] [2021-12-16 02:37:59,282 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1832445790] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:37:59,282 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:37:59,282 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-16 02:37:59,284 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342031063] [2021-12-16 02:37:59,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:37:59,287 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-16 02:37:59,288 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:37:59,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-16 02:37:59,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-16 02:37:59,320 INFO L87 Difference]: Start difference. First operand has 61 states, 51 states have (on average 1.5490196078431373) internal successors, (79), 54 states have internal predecessors, (79), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) 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) [2021-12-16 02:37:59,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:37:59,354 INFO L93 Difference]: Finished difference Result 117 states and 175 transitions. [2021-12-16 02:37:59,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-16 02:37:59,357 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 [2021-12-16 02:37:59,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:37:59,365 INFO L225 Difference]: With dead ends: 117 [2021-12-16 02:37:59,365 INFO L226 Difference]: Without dead ends: 52 [2021-12-16 02:37:59,368 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 [2021-12-16 02:37:59,372 INFO L933 BasicCegarLoop]: 82 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, 82 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 [2021-12-16 02:37:59,373 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 02:37:59,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-12-16 02:37:59,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2021-12-16 02:37:59,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 44 states have (on average 1.4090909090909092) internal successors, (62), 45 states have internal predecessors, (62), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-16 02:37:59,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 71 transitions. [2021-12-16 02:37:59,418 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 71 transitions. Word has length 7 [2021-12-16 02:37:59,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:37:59,418 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 71 transitions. [2021-12-16 02:37:59,419 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) [2021-12-16 02:37:59,419 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 71 transitions. [2021-12-16 02:37:59,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-12-16 02:37:59,420 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:37:59,420 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:37:59,421 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-16 02:37:59,421 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:37:59,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:37:59,423 INFO L85 PathProgramCache]: Analyzing trace with hash -548056348, now seen corresponding path program 1 times [2021-12-16 02:37:59,423 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:37:59,423 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362944191] [2021-12-16 02:37:59,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:37:59,424 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:37:59,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-16 02:37:59,442 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-16 02:37:59,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-16 02:37:59,474 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-16 02:37:59,475 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-16 02:37:59,476 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2021-12-16 02:37:59,477 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2021-12-16 02:37:59,478 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-16 02:37:59,480 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-12-16 02:37:59,482 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-16 02:37:59,504 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 02:37:59 BoogieIcfgContainer [2021-12-16 02:37:59,504 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-16 02:37:59,505 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-16 02:37:59,505 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-16 02:37:59,506 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-16 02:37:59,506 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 02:37:59" (3/4) ... [2021-12-16 02:37:59,509 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-12-16 02:37:59,509 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-16 02:37:59,510 INFO L158 Benchmark]: Toolchain (without parser) took 1255.37ms. Allocated memory was 100.7MB in the beginning and 123.7MB in the end (delta: 23.1MB). Free memory was 71.1MB in the beginning and 83.0MB in the end (delta: -11.9MB). Peak memory consumption was 12.4MB. Max. memory is 16.1GB. [2021-12-16 02:37:59,511 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 100.7MB. Free memory is still 56.7MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-16 02:37:59,514 INFO L158 Benchmark]: CACSL2BoogieTranslator took 297.32ms. Allocated memory is still 100.7MB. Free memory was 70.8MB in the beginning and 73.2MB in the end (delta: -2.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-16 02:37:59,514 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.76ms. Allocated memory is still 100.7MB. Free memory was 73.2MB in the beginning and 71.2MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-16 02:37:59,517 INFO L158 Benchmark]: Boogie Preprocessor took 40.65ms. Allocated memory is still 100.7MB. Free memory was 71.2MB in the beginning and 69.8MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-16 02:37:59,517 INFO L158 Benchmark]: RCFGBuilder took 380.81ms. Allocated memory is still 100.7MB. Free memory was 69.8MB in the beginning and 56.2MB in the end (delta: 13.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-12-16 02:37:59,518 INFO L158 Benchmark]: TraceAbstraction took 492.36ms. Allocated memory was 100.7MB in the beginning and 123.7MB in the end (delta: 23.1MB). Free memory was 55.8MB in the beginning and 83.6MB in the end (delta: -27.8MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-16 02:37:59,518 INFO L158 Benchmark]: Witness Printer took 3.81ms. Allocated memory is still 123.7MB. Free memory was 83.6MB in the beginning and 83.0MB in the end (delta: 609.7kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-16 02:37:59,524 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 100.7MB. Free memory is still 56.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 297.32ms. Allocated memory is still 100.7MB. Free memory was 70.8MB in the beginning and 73.2MB in the end (delta: -2.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 34.76ms. Allocated memory is still 100.7MB. Free memory was 73.2MB in the beginning and 71.2MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 40.65ms. Allocated memory is still 100.7MB. Free memory was 71.2MB in the beginning and 69.8MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 380.81ms. Allocated memory is still 100.7MB. Free memory was 69.8MB in the beginning and 56.2MB in the end (delta: 13.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 492.36ms. Allocated memory was 100.7MB in the beginning and 123.7MB in the end (delta: 23.1MB). Free memory was 55.8MB in the beginning and 83.6MB in the end (delta: -27.8MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 3.81ms. Allocated memory is still 123.7MB. Free memory was 83.6MB in the beginning and 83.0MB in the end (delta: 609.7kB). 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 - UnprovableResult [Line: 48]: 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 47, overapproximation of someBinaryArithmeticFLOAToperation at line 45. Possible FailurePath: [L322] COND TRUE __VERIFIER_nondet_int() [L323] CALL main1() [L39] float IN = __VERIFIER_nondet_float(); [L40] CALL assume_abort_if_not(IN >= 0.0f && IN < 1.0f) [L34] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L40] RET assume_abort_if_not(IN >= 0.0f && IN < 1.0f) [L42] float x = IN; [L44-L45] float result = 1.0f + 0.5f*x - 0.125f*x*x + 0.0625f*x*x*x - 0.0390625f*x*x*x*x; VAL [IN=49, x=49] [L47] COND TRUE !(result >= 0.0f && result < 1.3985f) VAL [IN=49, x=49] [L48] reach_error() VAL [IN=49, x=49] - UnprovableResult [Line: 60]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 61 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.4s, 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, 82 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, 82 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=61occurred 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 [2021-12-16 02:37:59,565 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with 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/combinations/square_5+soft_float_5a.c.cil.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 6ee45b2e6127ec54444d337a03ade6c3159ccf77c3fcc0ba8ab9ed7cc07fa235 --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-16 02:38:01,430 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-16 02:38:01,433 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-16 02:38:01,470 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-16 02:38:01,471 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-16 02:38:01,474 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-16 02:38:01,475 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-16 02:38:01,479 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-16 02:38:01,481 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-16 02:38:01,485 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-16 02:38:01,486 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-16 02:38:01,489 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-16 02:38:01,489 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-16 02:38:01,491 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-16 02:38:01,493 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-16 02:38:01,496 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-16 02:38:01,496 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-16 02:38:01,497 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-16 02:38:01,499 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-16 02:38:01,504 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-16 02:38:01,505 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-16 02:38:01,506 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-16 02:38:01,507 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-16 02:38:01,508 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-16 02:38:01,514 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-16 02:38:01,514 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-16 02:38:01,514 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-16 02:38:01,523 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-16 02:38:01,524 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-16 02:38:01,524 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-16 02:38:01,525 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-16 02:38:01,525 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-16 02:38:01,527 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-16 02:38:01,527 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-16 02:38:01,528 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-16 02:38:01,529 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-16 02:38:01,529 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-16 02:38:01,530 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-16 02:38:01,530 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-16 02:38:01,531 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-16 02:38:01,532 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-16 02:38:01,539 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-12-16 02:38:01,574 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-16 02:38:01,574 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-16 02:38:01,575 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-16 02:38:01,575 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-16 02:38:01,576 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-16 02:38:01,576 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-16 02:38:01,577 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-16 02:38:01,577 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-16 02:38:01,577 INFO L138 SettingsManager]: * Use SBE=true [2021-12-16 02:38:01,578 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-16 02:38:01,578 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-16 02:38:01,579 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-16 02:38:01,579 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-16 02:38:01,579 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-16 02:38:01,579 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-16 02:38:01,580 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-16 02:38:01,580 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-16 02:38:01,580 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-16 02:38:01,580 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-16 02:38:01,580 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-16 02:38:01,581 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-16 02:38:01,581 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-16 02:38:01,581 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-16 02:38:01,581 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-16 02:38:01,581 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-16 02:38:01,582 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-16 02:38:01,582 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 02:38:01,582 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-16 02:38:01,582 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-16 02:38:01,582 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-16 02:38:01,583 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-16 02:38:01,583 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-16 02:38:01,583 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-16 02:38:01,583 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-16 02:38:01,584 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-16 02:38:01,584 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-16 02:38:01,584 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-16 02:38:01,584 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6ee45b2e6127ec54444d337a03ade6c3159ccf77c3fcc0ba8ab9ed7cc07fa235 [2021-12-16 02:38:01,892 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-16 02:38:01,918 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-16 02:38:01,920 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-16 02:38:01,921 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-16 02:38:01,922 INFO L275 PluginConnector]: CDTParser initialized [2021-12-16 02:38:01,923 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/square_5+soft_float_5a.c.cil.c [2021-12-16 02:38:01,977 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f73173ef5/9ff4672577c741449af1f889dc72f10a/FLAGac6e17cb7 [2021-12-16 02:38:02,408 INFO L306 CDTParser]: Found 1 translation units. [2021-12-16 02:38:02,412 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/square_5+soft_float_5a.c.cil.c [2021-12-16 02:38:02,423 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f73173ef5/9ff4672577c741449af1f889dc72f10a/FLAGac6e17cb7 [2021-12-16 02:38:02,440 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f73173ef5/9ff4672577c741449af1f889dc72f10a [2021-12-16 02:38:02,442 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-16 02:38:02,444 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-16 02:38:02,447 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-16 02:38:02,447 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-16 02:38:02,450 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-16 02:38:02,450 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 02:38:02" (1/1) ... [2021-12-16 02:38:02,452 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a097f77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:38:02, skipping insertion in model container [2021-12-16 02:38:02,452 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 02:38:02" (1/1) ... [2021-12-16 02:38:02,457 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-16 02:38:02,491 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-16 02:38:02,669 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/combinations/square_5+soft_float_5a.c.cil.c[1998,2011] [2021-12-16 02:38:02,675 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/combinations/square_5+soft_float_5a.c.cil.c[2367,2380] [2021-12-16 02:38:02,756 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 02:38:02,764 INFO L203 MainTranslator]: Completed pre-run [2021-12-16 02:38:02,776 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/combinations/square_5+soft_float_5a.c.cil.c[1998,2011] [2021-12-16 02:38:02,777 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/combinations/square_5+soft_float_5a.c.cil.c[2367,2380] [2021-12-16 02:38:02,794 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 02:38:02,806 INFO L208 MainTranslator]: Completed translation [2021-12-16 02:38:02,806 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:38:02 WrapperNode [2021-12-16 02:38:02,806 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-16 02:38:02,807 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-16 02:38:02,811 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-16 02:38:02,811 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-16 02:38:02,817 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:38:02" (1/1) ... [2021-12-16 02:38:02,835 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:38:02" (1/1) ... [2021-12-16 02:38:02,860 INFO L137 Inliner]: procedures = 28, calls = 17, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 129 [2021-12-16 02:38:02,861 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-16 02:38:02,861 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-16 02:38:02,862 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-16 02:38:02,862 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-16 02:38:02,868 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:38:02" (1/1) ... [2021-12-16 02:38:02,868 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:38:02" (1/1) ... [2021-12-16 02:38:02,872 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:38:02" (1/1) ... [2021-12-16 02:38:02,872 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:38:02" (1/1) ... [2021-12-16 02:38:02,879 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:38:02" (1/1) ... [2021-12-16 02:38:02,883 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:38:02" (1/1) ... [2021-12-16 02:38:02,885 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:38:02" (1/1) ... [2021-12-16 02:38:02,888 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-16 02:38:02,893 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-16 02:38:02,893 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-16 02:38:02,893 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-16 02:38:02,894 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:38:02" (1/1) ... [2021-12-16 02:38:02,899 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 02:38:02,908 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 02:38:02,918 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) [2021-12-16 02:38:02,937 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 [2021-12-16 02:38:02,964 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-16 02:38:02,964 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-16 02:38:02,964 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2021-12-16 02:38:02,965 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2021-12-16 02:38:02,965 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-16 02:38:02,965 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-16 02:38:02,965 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-16 02:38:02,965 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-16 02:38:03,031 INFO L236 CfgBuilder]: Building ICFG [2021-12-16 02:38:03,033 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-16 02:38:05,457 INFO L277 CfgBuilder]: Performing block encoding [2021-12-16 02:38:05,463 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-16 02:38:05,465 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-16 02:38:05,467 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 02:38:05 BoogieIcfgContainer [2021-12-16 02:38:05,467 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-16 02:38:05,469 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-16 02:38:05,469 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-16 02:38:05,471 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-16 02:38:05,471 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 02:38:02" (1/3) ... [2021-12-16 02:38:05,472 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17c780b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 02:38:05, skipping insertion in model container [2021-12-16 02:38:05,472 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:38:02" (2/3) ... [2021-12-16 02:38:05,472 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17c780b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 02:38:05, skipping insertion in model container [2021-12-16 02:38:05,472 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 02:38:05" (3/3) ... [2021-12-16 02:38:05,473 INFO L111 eAbstractionObserver]: Analyzing ICFG square_5+soft_float_5a.c.cil.c [2021-12-16 02:38:05,477 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-16 02:38:05,477 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-16 02:38:05,511 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-16 02:38:05,518 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 [2021-12-16 02:38:05,518 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-16 02:38:05,529 INFO L276 IsEmpty]: Start isEmpty. Operand has 61 states, 51 states have (on average 1.5490196078431373) internal successors, (79), 54 states have internal predecessors, (79), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-12-16 02:38:05,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-12-16 02:38:05,532 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:38:05,532 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:38:05,533 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:38:05,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:38:05,542 INFO L85 PathProgramCache]: Analyzing trace with hash -548115930, now seen corresponding path program 1 times [2021-12-16 02:38:05,552 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-16 02:38:05,553 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [602139328] [2021-12-16 02:38:05,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:38:05,554 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-16 02:38:05,554 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-16 02:38:05,556 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) [2021-12-16 02:38:05,590 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-12-16 02:38:06,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:38:06,044 INFO L263 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 1 conjunts are in the unsatisfiable core [2021-12-16 02:38:06,047 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 02:38:06,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:38:06,094 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 02:38:06,094 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-16 02:38:06,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [602139328] [2021-12-16 02:38:06,096 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [602139328] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:38:06,096 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:38:06,097 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-16 02:38:06,099 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944824419] [2021-12-16 02:38:06,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:38:06,103 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-16 02:38:06,103 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-16 02:38:06,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-16 02:38:06,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-16 02:38:06,143 INFO L87 Difference]: Start difference. First operand has 61 states, 51 states have (on average 1.5490196078431373) internal successors, (79), 54 states have internal predecessors, (79), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) 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) [2021-12-16 02:38:06,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:38:06,175 INFO L93 Difference]: Finished difference Result 117 states and 175 transitions. [2021-12-16 02:38:06,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-16 02:38:06,176 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 [2021-12-16 02:38:06,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:38:06,183 INFO L225 Difference]: With dead ends: 117 [2021-12-16 02:38:06,183 INFO L226 Difference]: Without dead ends: 52 [2021-12-16 02:38:06,186 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 [2021-12-16 02:38:06,189 INFO L933 BasicCegarLoop]: 82 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, 82 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 [2021-12-16 02:38:06,190 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 02:38:06,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-12-16 02:38:06,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2021-12-16 02:38:06,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 44 states have (on average 1.4090909090909092) internal successors, (62), 45 states have internal predecessors, (62), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-16 02:38:06,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 71 transitions. [2021-12-16 02:38:06,217 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 71 transitions. Word has length 7 [2021-12-16 02:38:06,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:38:06,217 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 71 transitions. [2021-12-16 02:38:06,218 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) [2021-12-16 02:38:06,218 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 71 transitions. [2021-12-16 02:38:06,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-12-16 02:38:06,218 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:38:06,218 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:38:06,234 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-12-16 02:38:06,419 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-16 02:38:06,420 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:38:06,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:38:06,421 INFO L85 PathProgramCache]: Analyzing trace with hash -548056348, now seen corresponding path program 1 times [2021-12-16 02:38:06,421 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-16 02:38:06,421 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [871474317] [2021-12-16 02:38:06,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:38:06,422 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-16 02:38:06,422 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-16 02:38:06,423 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) [2021-12-16 02:38:06,425 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process