./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/square_2+soft_float_4-2a.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_2+soft_float_4-2a.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 af68db482217344707737f8e87f1bf38c34023f3266d60519ba723388f89d51c --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-16 02:36:02,150 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-16 02:36:02,152 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-16 02:36:02,185 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-16 02:36:02,186 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-16 02:36:02,188 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-16 02:36:02,189 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-16 02:36:02,191 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-16 02:36:02,192 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-16 02:36:02,196 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-16 02:36:02,196 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-16 02:36:02,197 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-16 02:36:02,198 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-16 02:36:02,199 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-16 02:36:02,200 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-16 02:36:02,204 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-16 02:36:02,206 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-16 02:36:02,207 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-16 02:36:02,209 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-16 02:36:02,215 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-16 02:36:02,216 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-16 02:36:02,217 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-16 02:36:02,219 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-16 02:36:02,220 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-16 02:36:02,226 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-16 02:36:02,226 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-16 02:36:02,227 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-16 02:36:02,228 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-16 02:36:02,228 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-16 02:36:02,229 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-16 02:36:02,229 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-16 02:36:02,230 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-16 02:36:02,231 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-16 02:36:02,232 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-16 02:36:02,233 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-16 02:36:02,233 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-16 02:36:02,233 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-16 02:36:02,234 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-16 02:36:02,234 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-16 02:36:02,235 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-16 02:36:02,236 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-16 02:36:02,237 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-16 02:36:02,263 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-16 02:36:02,263 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-16 02:36:02,263 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-16 02:36:02,264 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-16 02:36:02,264 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-16 02:36:02,265 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-16 02:36:02,265 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-16 02:36:02,265 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-16 02:36:02,265 INFO L138 SettingsManager]: * Use SBE=true [2021-12-16 02:36:02,266 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-16 02:36:02,266 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-16 02:36:02,266 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-16 02:36:02,267 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-16 02:36:02,267 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-16 02:36:02,267 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-16 02:36:02,267 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-16 02:36:02,267 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-16 02:36:02,267 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-16 02:36:02,267 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-16 02:36:02,268 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-16 02:36:02,268 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-16 02:36:02,268 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-16 02:36:02,268 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-16 02:36:02,268 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-16 02:36:02,268 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 02:36:02,269 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-16 02:36:02,269 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-16 02:36:02,270 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-16 02:36:02,270 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-16 02:36:02,270 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-16 02:36:02,270 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-16 02:36:02,270 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-16 02:36:02,271 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-16 02:36:02,271 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-16 02:36:02,271 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> af68db482217344707737f8e87f1bf38c34023f3266d60519ba723388f89d51c [2021-12-16 02:36:02,451 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-16 02:36:02,465 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-16 02:36:02,467 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-16 02:36:02,468 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-16 02:36:02,468 INFO L275 PluginConnector]: CDTParser initialized [2021-12-16 02:36:02,469 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/square_2+soft_float_4-2a.c.cil.c [2021-12-16 02:36:02,528 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ed116edde/59afed361e144526a472d7e8f2b6127e/FLAG0891170c7 [2021-12-16 02:36:02,958 INFO L306 CDTParser]: Found 1 translation units. [2021-12-16 02:36:02,959 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/square_2+soft_float_4-2a.c.cil.c [2021-12-16 02:36:02,974 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ed116edde/59afed361e144526a472d7e8f2b6127e/FLAG0891170c7 [2021-12-16 02:36:02,988 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ed116edde/59afed361e144526a472d7e8f2b6127e [2021-12-16 02:36:02,990 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-16 02:36:02,992 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-16 02:36:02,994 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-16 02:36:02,994 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-16 02:36:02,997 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-16 02:36:02,998 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 02:36:02" (1/1) ... [2021-12-16 02:36:02,999 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7efee2a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:36:02, skipping insertion in model container [2021-12-16 02:36:02,999 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 02:36:02" (1/1) ... [2021-12-16 02:36:03,004 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-16 02:36:03,031 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-16 02:36:03,197 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_2+soft_float_4-2a.c.cil.c[1997,2010] [2021-12-16 02:36:03,201 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_2+soft_float_4-2a.c.cil.c[2391,2404] [2021-12-16 02:36:03,235 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 02:36:03,241 INFO L203 MainTranslator]: Completed pre-run [2021-12-16 02:36:03,259 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_2+soft_float_4-2a.c.cil.c[1997,2010] [2021-12-16 02:36:03,260 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_2+soft_float_4-2a.c.cil.c[2391,2404] [2021-12-16 02:36:03,288 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 02:36:03,298 INFO L208 MainTranslator]: Completed translation [2021-12-16 02:36:03,299 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:36:03 WrapperNode [2021-12-16 02:36:03,299 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-16 02:36:03,300 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-16 02:36:03,300 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-16 02:36:03,300 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-16 02:36:03,304 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:36:03" (1/1) ... [2021-12-16 02:36:03,319 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:36:03" (1/1) ... [2021-12-16 02:36:03,338 INFO L137 Inliner]: procedures = 27, calls = 19, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 74 [2021-12-16 02:36:03,339 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-16 02:36:03,339 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-16 02:36:03,339 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-16 02:36:03,340 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-16 02:36:03,345 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:36:03" (1/1) ... [2021-12-16 02:36:03,345 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:36:03" (1/1) ... [2021-12-16 02:36:03,359 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:36:03" (1/1) ... [2021-12-16 02:36:03,360 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:36:03" (1/1) ... [2021-12-16 02:36:03,367 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:36:03" (1/1) ... [2021-12-16 02:36:03,370 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:36:03" (1/1) ... [2021-12-16 02:36:03,371 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:36:03" (1/1) ... [2021-12-16 02:36:03,373 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-16 02:36:03,374 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-16 02:36:03,374 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-16 02:36:03,374 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-16 02:36:03,386 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:36:03" (1/1) ... [2021-12-16 02:36:03,391 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 02:36:03,398 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 02:36:03,407 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 02:36:03,425 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 02:36:03,448 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-16 02:36:03,449 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2021-12-16 02:36:03,449 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2021-12-16 02:36:03,449 INFO L130 BoogieDeclarations]: Found specification of procedure addflt [2021-12-16 02:36:03,450 INFO L138 BoogieDeclarations]: Found implementation of procedure addflt [2021-12-16 02:36:03,450 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-16 02:36:03,450 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-16 02:36:03,450 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-16 02:36:03,451 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-16 02:36:03,451 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-16 02:36:03,514 INFO L236 CfgBuilder]: Building ICFG [2021-12-16 02:36:03,517 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-16 02:36:03,764 INFO L277 CfgBuilder]: Performing block encoding [2021-12-16 02:36:03,783 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-16 02:36:03,784 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-16 02:36:03,785 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 02:36:03 BoogieIcfgContainer [2021-12-16 02:36:03,785 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-16 02:36:03,786 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-16 02:36:03,787 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-16 02:36:03,789 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-16 02:36:03,789 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 02:36:02" (1/3) ... [2021-12-16 02:36:03,790 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1481b3fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 02:36:03, skipping insertion in model container [2021-12-16 02:36:03,790 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:36:03" (2/3) ... [2021-12-16 02:36:03,790 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1481b3fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 02:36:03, skipping insertion in model container [2021-12-16 02:36:03,790 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 02:36:03" (3/3) ... [2021-12-16 02:36:03,791 INFO L111 eAbstractionObserver]: Analyzing ICFG square_2+soft_float_4-2a.c.cil.c [2021-12-16 02:36:03,794 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-16 02:36:03,794 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-16 02:36:03,869 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-16 02:36:03,876 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 02:36:03,877 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-16 02:36:03,894 INFO L276 IsEmpty]: Start isEmpty. Operand has 63 states, 49 states have (on average 1.489795918367347) internal successors, (73), 51 states have internal predecessors, (73), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-12-16 02:36:03,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-12-16 02:36:03,897 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:36:03,897 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:36:03,898 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:36:03,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:36:03,908 INFO L85 PathProgramCache]: Analyzing trace with hash -548115930, now seen corresponding path program 1 times [2021-12-16 02:36:03,916 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:36:03,917 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567896338] [2021-12-16 02:36:03,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:36:03,918 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:36:04,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:36:04,073 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 02:36:04,074 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:36:04,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567896338] [2021-12-16 02:36:04,074 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [567896338] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:36:04,075 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:36:04,075 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-16 02:36:04,076 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164494959] [2021-12-16 02:36:04,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:36:04,079 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-16 02:36:04,080 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:36:04,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-16 02:36:04,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-16 02:36:04,104 INFO L87 Difference]: Start difference. First operand has 63 states, 49 states have (on average 1.489795918367347) internal successors, (73), 51 states have internal predecessors, (73), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) 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 02:36:04,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:36:04,133 INFO L93 Difference]: Finished difference Result 121 states and 178 transitions. [2021-12-16 02:36:04,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-16 02:36:04,134 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 02:36:04,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:36:04,140 INFO L225 Difference]: With dead ends: 121 [2021-12-16 02:36:04,141 INFO L226 Difference]: Without dead ends: 56 [2021-12-16 02:36:04,146 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 02:36:04,151 INFO L933 BasicCegarLoop]: 81 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, 81 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 02:36:04,152 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 02:36:04,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-12-16 02:36:04,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2021-12-16 02:36:04,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 43 states have (on average 1.3488372093023255) internal successors, (58), 45 states have internal predecessors, (58), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-12-16 02:36:04,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 73 transitions. [2021-12-16 02:36:04,187 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 73 transitions. Word has length 7 [2021-12-16 02:36:04,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:36:04,188 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 73 transitions. [2021-12-16 02:36:04,188 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 02:36:04,188 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 73 transitions. [2021-12-16 02:36:04,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-12-16 02:36:04,189 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:36:04,189 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:36:04,190 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-16 02:36:04,190 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:36:04,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:36:04,193 INFO L85 PathProgramCache]: Analyzing trace with hash -548056348, now seen corresponding path program 1 times [2021-12-16 02:36:04,194 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:36:04,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241656865] [2021-12-16 02:36:04,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:36:04,194 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:36:04,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-16 02:36:04,221 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-16 02:36:04,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-16 02:36:04,253 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-16 02:36:04,253 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-16 02:36:04,254 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2021-12-16 02:36:04,256 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2021-12-16 02:36:04,256 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-16 02:36:04,260 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-12-16 02:36:04,261 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-16 02:36:04,278 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 02:36:04 BoogieIcfgContainer [2021-12-16 02:36:04,278 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-16 02:36:04,280 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-16 02:36:04,280 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-16 02:36:04,281 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-16 02:36:04,281 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 02:36:03" (3/4) ... [2021-12-16 02:36:04,283 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-12-16 02:36:04,283 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-16 02:36:04,285 INFO L158 Benchmark]: Toolchain (without parser) took 1292.03ms. Allocated memory was 88.1MB in the beginning and 113.2MB in the end (delta: 25.2MB). Free memory was 54.7MB in the beginning and 75.7MB in the end (delta: -21.0MB). Peak memory consumption was 3.8MB. Max. memory is 16.1GB. [2021-12-16 02:36:04,285 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 88.1MB. Free memory was 44.3MB in the beginning and 44.3MB in the end (delta: 39.2kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-16 02:36:04,287 INFO L158 Benchmark]: CACSL2BoogieTranslator took 305.69ms. Allocated memory is still 88.1MB. Free memory was 54.4MB in the beginning and 60.2MB in the end (delta: -5.8MB). Peak memory consumption was 9.6MB. Max. memory is 16.1GB. [2021-12-16 02:36:04,288 INFO L158 Benchmark]: Boogie Procedure Inliner took 38.85ms. Allocated memory is still 88.1MB. Free memory was 60.2MB in the beginning and 58.4MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-16 02:36:04,290 INFO L158 Benchmark]: Boogie Preprocessor took 33.61ms. Allocated memory is still 88.1MB. Free memory was 58.4MB in the beginning and 57.3MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-16 02:36:04,290 INFO L158 Benchmark]: RCFGBuilder took 411.81ms. Allocated memory is still 88.1MB. Free memory was 57.0MB in the beginning and 44.4MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-12-16 02:36:04,290 INFO L158 Benchmark]: TraceAbstraction took 492.20ms. Allocated memory was 88.1MB in the beginning and 113.2MB in the end (delta: 25.2MB). Free memory was 43.7MB in the beginning and 76.1MB in the end (delta: -32.4MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-16 02:36:04,291 INFO L158 Benchmark]: Witness Printer took 3.20ms. Allocated memory is still 113.2MB. Free memory was 76.1MB in the beginning and 75.7MB in the end (delta: 395.2kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-16 02:36:04,296 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 88.1MB. Free memory was 44.3MB in the beginning and 44.3MB in the end (delta: 39.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 305.69ms. Allocated memory is still 88.1MB. Free memory was 54.4MB in the beginning and 60.2MB in the end (delta: -5.8MB). Peak memory consumption was 9.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 38.85ms. Allocated memory is still 88.1MB. Free memory was 60.2MB in the beginning and 58.4MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 33.61ms. Allocated memory is still 88.1MB. Free memory was 58.4MB in the beginning and 57.3MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 411.81ms. Allocated memory is still 88.1MB. Free memory was 57.0MB in the beginning and 44.4MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 492.20ms. Allocated memory was 88.1MB in the beginning and 113.2MB in the end (delta: 25.2MB). Free memory was 43.7MB in the beginning and 76.1MB in the end (delta: -32.4MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 3.20ms. Allocated memory is still 113.2MB. Free memory was 76.1MB in the beginning and 75.7MB in the end (delta: 395.2kB). 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: 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: [L310] COND TRUE __VERIFIER_nondet_int() [L311] 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 < 1.398f) VAL [IN=49, x=49] [L48] reach_error() VAL [IN=49, x=49] - UnprovableResult [Line: 61]: 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 4 procedures, 63 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, 81 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, 81 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=63occurred 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 02:36:04,331 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/combinations/square_2+soft_float_4-2a.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 af68db482217344707737f8e87f1bf38c34023f3266d60519ba723388f89d51c --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-16 02:36:06,287 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-16 02:36:06,290 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-16 02:36:06,331 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-16 02:36:06,332 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-16 02:36:06,335 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-16 02:36:06,337 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-16 02:36:06,342 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-16 02:36:06,345 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-16 02:36:06,350 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-16 02:36:06,351 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-16 02:36:06,355 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-16 02:36:06,356 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-16 02:36:06,358 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-16 02:36:06,360 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-16 02:36:06,364 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-16 02:36:06,365 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-16 02:36:06,366 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-16 02:36:06,368 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-16 02:36:06,370 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-16 02:36:06,373 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-16 02:36:06,374 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-16 02:36:06,376 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-16 02:36:06,377 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-16 02:36:06,380 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-16 02:36:06,382 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-16 02:36:06,382 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-16 02:36:06,395 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-16 02:36:06,395 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-16 02:36:06,396 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-16 02:36:06,396 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-16 02:36:06,397 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-16 02:36:06,398 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-16 02:36:06,398 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-16 02:36:06,399 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-16 02:36:06,399 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-16 02:36:06,400 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-16 02:36:06,400 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-16 02:36:06,400 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-16 02:36:06,401 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-16 02:36:06,401 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-16 02:36:06,402 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-12-16 02:36:06,424 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-16 02:36:06,425 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-16 02:36:06,426 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-16 02:36:06,427 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-16 02:36:06,427 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-16 02:36:06,428 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-16 02:36:06,429 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-16 02:36:06,429 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-16 02:36:06,429 INFO L138 SettingsManager]: * Use SBE=true [2021-12-16 02:36:06,429 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-16 02:36:06,430 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-16 02:36:06,430 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-16 02:36:06,431 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-16 02:36:06,431 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-16 02:36:06,431 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-16 02:36:06,431 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-16 02:36:06,431 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-16 02:36:06,431 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-16 02:36:06,432 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-16 02:36:06,432 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-16 02:36:06,432 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-16 02:36:06,432 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-16 02:36:06,432 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-16 02:36:06,432 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-16 02:36:06,433 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-16 02:36:06,433 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-16 02:36:06,433 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 02:36:06,433 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-16 02:36:06,433 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-16 02:36:06,433 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-16 02:36:06,434 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-16 02:36:06,434 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-16 02:36:06,434 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-16 02:36:06,434 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-16 02:36:06,435 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-16 02:36:06,435 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-16 02:36:06,435 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-16 02:36:06,435 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> af68db482217344707737f8e87f1bf38c34023f3266d60519ba723388f89d51c [2021-12-16 02:36:06,809 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-16 02:36:06,836 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-16 02:36:06,838 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-16 02:36:06,838 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-16 02:36:06,839 INFO L275 PluginConnector]: CDTParser initialized [2021-12-16 02:36:06,841 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/square_2+soft_float_4-2a.c.cil.c [2021-12-16 02:36:06,898 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a7c192fc1/ecf25cdd8f704d98b05be24edc2c838d/FLAGccb91082c [2021-12-16 02:36:07,312 INFO L306 CDTParser]: Found 1 translation units. [2021-12-16 02:36:07,313 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/square_2+soft_float_4-2a.c.cil.c [2021-12-16 02:36:07,322 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a7c192fc1/ecf25cdd8f704d98b05be24edc2c838d/FLAGccb91082c [2021-12-16 02:36:07,335 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a7c192fc1/ecf25cdd8f704d98b05be24edc2c838d [2021-12-16 02:36:07,337 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-16 02:36:07,339 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-16 02:36:07,351 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-16 02:36:07,355 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-16 02:36:07,358 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-16 02:36:07,358 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 02:36:07" (1/1) ... [2021-12-16 02:36:07,360 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f9de812 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:36:07, skipping insertion in model container [2021-12-16 02:36:07,360 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 02:36:07" (1/1) ... [2021-12-16 02:36:07,365 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-16 02:36:07,390 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-16 02:36:07,487 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_2+soft_float_4-2a.c.cil.c[1997,2010] [2021-12-16 02:36:07,491 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_2+soft_float_4-2a.c.cil.c[2391,2404] [2021-12-16 02:36:07,570 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 02:36:07,583 INFO L203 MainTranslator]: Completed pre-run [2021-12-16 02:36:07,593 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_2+soft_float_4-2a.c.cil.c[1997,2010] [2021-12-16 02:36:07,594 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_2+soft_float_4-2a.c.cil.c[2391,2404] [2021-12-16 02:36:07,609 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 02:36:07,622 INFO L208 MainTranslator]: Completed translation [2021-12-16 02:36:07,623 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:36:07 WrapperNode [2021-12-16 02:36:07,623 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-16 02:36:07,624 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-16 02:36:07,624 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-16 02:36:07,625 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-16 02:36:07,629 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:36:07" (1/1) ... [2021-12-16 02:36:07,648 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:36:07" (1/1) ... [2021-12-16 02:36:07,665 INFO L137 Inliner]: procedures = 28, calls = 19, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 70 [2021-12-16 02:36:07,666 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-16 02:36:07,666 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-16 02:36:07,666 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-16 02:36:07,666 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-16 02:36:07,674 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:36:07" (1/1) ... [2021-12-16 02:36:07,674 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:36:07" (1/1) ... [2021-12-16 02:36:07,677 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:36:07" (1/1) ... [2021-12-16 02:36:07,677 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:36:07" (1/1) ... [2021-12-16 02:36:07,700 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:36:07" (1/1) ... [2021-12-16 02:36:07,704 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:36:07" (1/1) ... [2021-12-16 02:36:07,707 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:36:07" (1/1) ... [2021-12-16 02:36:07,720 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-16 02:36:07,721 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-16 02:36:07,721 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-16 02:36:07,721 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-16 02:36:07,722 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:36:07" (1/1) ... [2021-12-16 02:36:07,728 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 02:36:07,738 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 02:36:07,748 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 02:36:07,755 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 02:36:07,779 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-16 02:36:07,779 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-16 02:36:07,779 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2021-12-16 02:36:07,779 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2021-12-16 02:36:07,780 INFO L130 BoogieDeclarations]: Found specification of procedure addflt [2021-12-16 02:36:07,780 INFO L138 BoogieDeclarations]: Found implementation of procedure addflt [2021-12-16 02:36:07,780 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-16 02:36:07,780 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-16 02:36:07,780 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-16 02:36:07,780 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-16 02:36:07,836 INFO L236 CfgBuilder]: Building ICFG [2021-12-16 02:36:07,838 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-16 02:36:10,324 INFO L277 CfgBuilder]: Performing block encoding [2021-12-16 02:36:10,331 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-16 02:36:10,331 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-16 02:36:10,332 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 02:36:10 BoogieIcfgContainer [2021-12-16 02:36:10,333 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-16 02:36:10,334 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-16 02:36:10,334 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-16 02:36:10,336 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-16 02:36:10,336 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 02:36:07" (1/3) ... [2021-12-16 02:36:10,341 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1169de18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 02:36:10, skipping insertion in model container [2021-12-16 02:36:10,341 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:36:07" (2/3) ... [2021-12-16 02:36:10,341 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1169de18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 02:36:10, skipping insertion in model container [2021-12-16 02:36:10,342 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 02:36:10" (3/3) ... [2021-12-16 02:36:10,343 INFO L111 eAbstractionObserver]: Analyzing ICFG square_2+soft_float_4-2a.c.cil.c [2021-12-16 02:36:10,346 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-16 02:36:10,346 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-16 02:36:10,383 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-16 02:36:10,388 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 02:36:10,389 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-16 02:36:10,399 INFO L276 IsEmpty]: Start isEmpty. Operand has 63 states, 49 states have (on average 1.489795918367347) internal successors, (73), 51 states have internal predecessors, (73), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-12-16 02:36:10,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-12-16 02:36:10,402 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:36:10,403 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:36:10,403 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:36:10,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:36:10,407 INFO L85 PathProgramCache]: Analyzing trace with hash -548115930, now seen corresponding path program 1 times [2021-12-16 02:36:10,414 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-16 02:36:10,415 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1307751351] [2021-12-16 02:36:10,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:36:10,416 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-16 02:36:10,416 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-16 02:36:10,430 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 02:36:10,431 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 02:36:10,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:36:10,872 INFO L263 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 1 conjunts are in the unsatisfiable core [2021-12-16 02:36:10,875 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 02:36:10,914 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 02:36:10,915 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 02:36:10,915 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-16 02:36:10,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1307751351] [2021-12-16 02:36:10,916 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1307751351] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:36:10,916 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:36:10,916 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-16 02:36:10,917 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965825305] [2021-12-16 02:36:10,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:36:10,921 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-16 02:36:10,921 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-16 02:36:10,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-16 02:36:10,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-16 02:36:10,941 INFO L87 Difference]: Start difference. First operand has 63 states, 49 states have (on average 1.489795918367347) internal successors, (73), 51 states have internal predecessors, (73), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) 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 02:36:10,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 02:36:10,960 INFO L93 Difference]: Finished difference Result 121 states and 178 transitions. [2021-12-16 02:36:10,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-16 02:36:10,962 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 02:36:10,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 02:36:10,967 INFO L225 Difference]: With dead ends: 121 [2021-12-16 02:36:10,967 INFO L226 Difference]: Without dead ends: 56 [2021-12-16 02:36:10,970 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 02:36:10,973 INFO L933 BasicCegarLoop]: 81 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, 81 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 02:36:10,973 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 02:36:10,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-12-16 02:36:10,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2021-12-16 02:36:10,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 43 states have (on average 1.3488372093023255) internal successors, (58), 45 states have internal predecessors, (58), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-12-16 02:36:11,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 73 transitions. [2021-12-16 02:36:11,001 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 73 transitions. Word has length 7 [2021-12-16 02:36:11,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 02:36:11,002 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 73 transitions. [2021-12-16 02:36:11,002 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 02:36:11,002 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 73 transitions. [2021-12-16 02:36:11,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-12-16 02:36:11,003 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 02:36:11,003 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:36:11,021 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 02:36:11,217 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 02:36:11,218 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 02:36:11,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:36:11,218 INFO L85 PathProgramCache]: Analyzing trace with hash -548056348, now seen corresponding path program 1 times [2021-12-16 02:36:11,219 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-16 02:36:11,219 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [411619739] [2021-12-16 02:36:11,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:36:11,219 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-16 02:36:11,219 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-16 02:36:11,222 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 02:36:11,223 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process