./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/square_7+soft_float_1-3a.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ae007674 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_7+soft_float_1-3a.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 613205d4a69cfcfbc25451727273468eeac5e6faf4f74e1e8c3a83a65bc4c664 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ae00767 [2021-12-28 02:39:02,346 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-28 02:39:02,347 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-28 02:39:02,367 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-28 02:39:02,367 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-28 02:39:02,368 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-28 02:39:02,369 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-28 02:39:02,370 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-28 02:39:02,371 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-28 02:39:02,371 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-28 02:39:02,372 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-28 02:39:02,373 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-28 02:39:02,373 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-28 02:39:02,374 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-28 02:39:02,374 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-28 02:39:02,375 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-28 02:39:02,375 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-28 02:39:02,376 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-28 02:39:02,377 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-28 02:39:02,378 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-28 02:39:02,379 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-28 02:39:02,382 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-28 02:39:02,383 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-28 02:39:02,386 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-28 02:39:02,388 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-28 02:39:02,391 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-28 02:39:02,391 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-28 02:39:02,392 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-28 02:39:02,392 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-28 02:39:02,401 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-28 02:39:02,401 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-28 02:39:02,402 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-28 02:39:02,402 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-28 02:39:02,403 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-28 02:39:02,404 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-28 02:39:02,405 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-28 02:39:02,405 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-28 02:39:02,406 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-28 02:39:02,406 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-28 02:39:02,407 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-28 02:39:02,408 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-28 02:39:02,409 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-28 02:39:02,440 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-28 02:39:02,441 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-28 02:39:02,441 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-28 02:39:02,442 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-28 02:39:02,442 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-28 02:39:02,442 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-28 02:39:02,443 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-28 02:39:02,443 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-28 02:39:02,443 INFO L138 SettingsManager]: * Use SBE=true [2021-12-28 02:39:02,443 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-28 02:39:02,443 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-28 02:39:02,444 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-28 02:39:02,444 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-28 02:39:02,444 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-28 02:39:02,444 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-28 02:39:02,444 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-28 02:39:02,444 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-28 02:39:02,444 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-28 02:39:02,444 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-28 02:39:02,445 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-28 02:39:02,445 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-28 02:39:02,445 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-28 02:39:02,445 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-28 02:39:02,445 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-28 02:39:02,445 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 02:39:02,445 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-28 02:39:02,446 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-28 02:39:02,446 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-28 02:39:02,446 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-28 02:39:02,446 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-28 02:39:02,446 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-28 02:39:02,446 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-28 02:39:02,446 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-28 02:39:02,447 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 613205d4a69cfcfbc25451727273468eeac5e6faf4f74e1e8c3a83a65bc4c664 [2021-12-28 02:39:02,709 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-28 02:39:02,727 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-28 02:39:02,730 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-28 02:39:02,731 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-28 02:39:02,731 INFO L275 PluginConnector]: CDTParser initialized [2021-12-28 02:39:02,732 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/square_7+soft_float_1-3a.c.cil.c [2021-12-28 02:39:02,782 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5d88052d3/7749822362ab4a5985cddd1f0aaf6e5b/FLAGaa940bc22 [2021-12-28 02:39:03,148 INFO L306 CDTParser]: Found 1 translation units. [2021-12-28 02:39:03,149 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/square_7+soft_float_1-3a.c.cil.c [2021-12-28 02:39:03,154 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5d88052d3/7749822362ab4a5985cddd1f0aaf6e5b/FLAGaa940bc22 [2021-12-28 02:39:03,162 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5d88052d3/7749822362ab4a5985cddd1f0aaf6e5b [2021-12-28 02:39:03,164 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-28 02:39:03,165 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-28 02:39:03,165 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-28 02:39:03,166 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-28 02:39:03,168 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-28 02:39:03,168 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 02:39:03" (1/1) ... [2021-12-28 02:39:03,169 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@118acb62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:39:03, skipping insertion in model container [2021-12-28 02:39:03,169 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 02:39:03" (1/1) ... [2021-12-28 02:39:03,174 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-28 02:39:03,194 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-28 02:39:03,351 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_7+soft_float_1-3a.c.cil.c[1995,2008] [2021-12-28 02:39:03,356 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_7+soft_float_1-3a.c.cil.c[2364,2377] [2021-12-28 02:39:03,405 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 02:39:03,411 INFO L203 MainTranslator]: Completed pre-run [2021-12-28 02:39:03,429 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_7+soft_float_1-3a.c.cil.c[1995,2008] [2021-12-28 02:39:03,432 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_7+soft_float_1-3a.c.cil.c[2364,2377] [2021-12-28 02:39:03,463 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 02:39:03,476 INFO L208 MainTranslator]: Completed translation [2021-12-28 02:39:03,478 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:39:03 WrapperNode [2021-12-28 02:39:03,478 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-28 02:39:03,479 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-28 02:39:03,479 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-28 02:39:03,479 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-28 02:39:03,483 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:39:03" (1/1) ... [2021-12-28 02:39:03,503 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:39:03" (1/1) ... [2021-12-28 02:39:03,527 INFO L137 Inliner]: procedures = 27, calls = 21, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 168 [2021-12-28 02:39:03,527 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-28 02:39:03,528 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-28 02:39:03,528 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-28 02:39:03,528 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-28 02:39:03,534 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:39:03" (1/1) ... [2021-12-28 02:39:03,535 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:39:03" (1/1) ... [2021-12-28 02:39:03,542 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:39:03" (1/1) ... [2021-12-28 02:39:03,542 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:39:03" (1/1) ... [2021-12-28 02:39:03,555 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:39:03" (1/1) ... [2021-12-28 02:39:03,559 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:39:03" (1/1) ... [2021-12-28 02:39:03,565 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:39:03" (1/1) ... [2021-12-28 02:39:03,568 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-28 02:39:03,569 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-28 02:39:03,569 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-28 02:39:03,570 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-28 02:39:03,570 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:39:03" (1/1) ... [2021-12-28 02:39:03,576 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 02:39:03,583 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 02:39:03,593 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) [2021-12-28 02:39:03,612 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 [2021-12-28 02:39:03,625 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-28 02:39:03,625 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2021-12-28 02:39:03,625 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2021-12-28 02:39:03,625 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-28 02:39:03,625 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-28 02:39:03,626 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-28 02:39:03,626 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-28 02:39:03,626 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-28 02:39:03,690 INFO L234 CfgBuilder]: Building ICFG [2021-12-28 02:39:03,691 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-28 02:39:03,914 INFO L275 CfgBuilder]: Performing block encoding [2021-12-28 02:39:03,919 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-28 02:39:03,919 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-28 02:39:03,920 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 02:39:03 BoogieIcfgContainer [2021-12-28 02:39:03,921 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-28 02:39:03,922 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-28 02:39:03,922 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-28 02:39:03,923 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-28 02:39:03,924 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.12 02:39:03" (1/3) ... [2021-12-28 02:39:03,924 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44926b30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 02:39:03, skipping insertion in model container [2021-12-28 02:39:03,924 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:39:03" (2/3) ... [2021-12-28 02:39:03,924 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44926b30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 02:39:03, skipping insertion in model container [2021-12-28 02:39:03,925 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 02:39:03" (3/3) ... [2021-12-28 02:39:03,925 INFO L111 eAbstractionObserver]: Analyzing ICFG square_7+soft_float_1-3a.c.cil.c [2021-12-28 02:39:03,929 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-28 02:39:03,929 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-28 02:39:03,959 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-28 02:39:03,963 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 [2021-12-28 02:39:03,963 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-28 02:39:03,974 INFO L276 IsEmpty]: Start isEmpty. Operand has 81 states, 67 states have (on average 1.5820895522388059) internal successors, (106), 71 states have internal predecessors, (106), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2021-12-28 02:39:03,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-12-28 02:39:03,977 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 02:39:03,977 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-28 02:39:03,978 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 02:39:03,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 02:39:03,981 INFO L85 PathProgramCache]: Analyzing trace with hash -548115930, now seen corresponding path program 1 times [2021-12-28 02:39:03,987 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 02:39:03,987 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13233058] [2021-12-28 02:39:03,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 02:39:03,988 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 02:39:04,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:39:04,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 02:39:04,072 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 02:39:04,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13233058] [2021-12-28 02:39:04,073 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13233058] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 02:39:04,073 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 02:39:04,073 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-28 02:39:04,074 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236939374] [2021-12-28 02:39:04,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 02:39:04,077 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-28 02:39:04,077 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 02:39:04,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-28 02:39:04,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-28 02:39:04,098 INFO L87 Difference]: Start difference. First operand has 81 states, 67 states have (on average 1.5820895522388059) internal successors, (106), 71 states have internal predecessors, (106), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) 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) [2021-12-28 02:39:04,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 02:39:04,133 INFO L93 Difference]: Finished difference Result 157 states and 249 transitions. [2021-12-28 02:39:04,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-28 02:39:04,136 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 [2021-12-28 02:39:04,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 02:39:04,149 INFO L225 Difference]: With dead ends: 157 [2021-12-28 02:39:04,150 INFO L226 Difference]: Without dead ends: 74 [2021-12-28 02:39:04,152 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 [2021-12-28 02:39:04,154 INFO L933 BasicCegarLoop]: 117 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, 117 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 [2021-12-28 02:39:04,155 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 02:39:04,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2021-12-28 02:39:04,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2021-12-28 02:39:04,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 61 states have (on average 1.4918032786885247) internal successors, (91), 64 states have internal predecessors, (91), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-12-28 02:39:04,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 108 transitions. [2021-12-28 02:39:04,197 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 108 transitions. Word has length 7 [2021-12-28 02:39:04,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 02:39:04,197 INFO L470 AbstractCegarLoop]: Abstraction has 74 states and 108 transitions. [2021-12-28 02:39:04,198 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) [2021-12-28 02:39:04,198 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 108 transitions. [2021-12-28 02:39:04,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-12-28 02:39:04,199 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 02:39:04,199 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-28 02:39:04,199 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-28 02:39:04,200 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 02:39:04,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 02:39:04,203 INFO L85 PathProgramCache]: Analyzing trace with hash -548056348, now seen corresponding path program 1 times [2021-12-28 02:39:04,203 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 02:39:04,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943743893] [2021-12-28 02:39:04,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 02:39:04,204 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 02:39:04,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 02:39:04,229 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-28 02:39:04,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 02:39:04,258 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-28 02:39:04,259 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-28 02:39:04,260 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2021-12-28 02:39:04,262 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2021-12-28 02:39:04,262 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-28 02:39:04,266 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-12-28 02:39:04,268 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-28 02:39:04,288 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.12 02:39:04 BoogieIcfgContainer [2021-12-28 02:39:04,288 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-28 02:39:04,289 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-28 02:39:04,289 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-28 02:39:04,289 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-28 02:39:04,289 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 02:39:03" (3/4) ... [2021-12-28 02:39:04,292 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-12-28 02:39:04,292 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-28 02:39:04,293 INFO L158 Benchmark]: Toolchain (without parser) took 1127.79ms. Allocated memory was 65.0MB in the beginning and 79.7MB in the end (delta: 14.7MB). Free memory was 45.2MB in the beginning and 52.6MB in the end (delta: -7.4MB). Peak memory consumption was 6.1MB. Max. memory is 16.1GB. [2021-12-28 02:39:04,294 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 65.0MB. Free memory was 46.1MB in the beginning and 46.0MB in the end (delta: 84.0kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-28 02:39:04,295 INFO L158 Benchmark]: CACSL2BoogieTranslator took 312.82ms. Allocated memory is still 65.0MB. Free memory was 45.0MB in the beginning and 43.4MB in the end (delta: 1.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-28 02:39:04,296 INFO L158 Benchmark]: Boogie Procedure Inliner took 48.60ms. Allocated memory is still 65.0MB. Free memory was 43.4MB in the beginning and 41.2MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-28 02:39:04,298 INFO L158 Benchmark]: Boogie Preprocessor took 40.06ms. Allocated memory is still 65.0MB. Free memory was 41.2MB in the beginning and 39.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-28 02:39:04,298 INFO L158 Benchmark]: RCFGBuilder took 351.28ms. Allocated memory is still 65.0MB. Free memory was 39.6MB in the beginning and 42.7MB in the end (delta: -3.1MB). Peak memory consumption was 17.0MB. Max. memory is 16.1GB. [2021-12-28 02:39:04,298 INFO L158 Benchmark]: TraceAbstraction took 366.35ms. Allocated memory was 65.0MB in the beginning and 79.7MB in the end (delta: 14.7MB). Free memory was 42.4MB in the beginning and 52.7MB in the end (delta: -10.3MB). Peak memory consumption was 3.1MB. Max. memory is 16.1GB. [2021-12-28 02:39:04,299 INFO L158 Benchmark]: Witness Printer took 3.41ms. Allocated memory is still 79.7MB. Free memory was 52.7MB in the beginning and 52.6MB in the end (delta: 131.5kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-28 02:39:04,303 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 65.0MB. Free memory was 46.1MB in the beginning and 46.0MB in the end (delta: 84.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 312.82ms. Allocated memory is still 65.0MB. Free memory was 45.0MB in the beginning and 43.4MB in the end (delta: 1.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 48.60ms. Allocated memory is still 65.0MB. Free memory was 43.4MB in the beginning and 41.2MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 40.06ms. Allocated memory is still 65.0MB. Free memory was 41.2MB in the beginning and 39.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 351.28ms. Allocated memory is still 65.0MB. Free memory was 39.6MB in the beginning and 42.7MB in the end (delta: -3.1MB). Peak memory consumption was 17.0MB. Max. memory is 16.1GB. * TraceAbstraction took 366.35ms. Allocated memory was 65.0MB in the beginning and 79.7MB in the end (delta: 14.7MB). Free memory was 42.4MB in the beginning and 52.7MB in the end (delta: -10.3MB). Peak memory consumption was 3.1MB. Max. memory is 16.1GB. * Witness Printer took 3.41ms. Allocated memory is still 79.7MB. Free memory was 52.7MB in the beginning and 52.6MB in the end (delta: 131.5kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 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: [L402] COND TRUE __VERIFIER_nondet_int() [L403] 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 < 1.4f) 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, 81 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 117 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, 117 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=81occurred 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 [2021-12-28 02:39:04,341 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_7+soft_float_1-3a.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 613205d4a69cfcfbc25451727273468eeac5e6faf4f74e1e8c3a83a65bc4c664 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ae00767 [2021-12-28 02:39:05,873 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-28 02:39:05,875 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-28 02:39:05,906 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-28 02:39:05,906 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-28 02:39:05,909 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-28 02:39:05,910 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-28 02:39:05,914 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-28 02:39:05,916 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-28 02:39:05,919 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-28 02:39:05,920 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-28 02:39:05,923 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-28 02:39:05,923 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-28 02:39:05,925 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-28 02:39:05,926 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-28 02:39:05,928 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-28 02:39:05,929 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-28 02:39:05,929 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-28 02:39:05,931 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-28 02:39:05,935 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-28 02:39:05,936 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-28 02:39:05,937 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-28 02:39:05,938 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-28 02:39:05,939 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-28 02:39:05,944 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-28 02:39:05,944 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-28 02:39:05,945 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-28 02:39:05,946 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-28 02:39:05,946 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-28 02:39:05,947 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-28 02:39:05,947 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-28 02:39:05,947 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-28 02:39:05,948 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-28 02:39:05,949 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-28 02:39:05,950 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-28 02:39:05,950 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-28 02:39:05,950 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-28 02:39:05,951 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-28 02:39:05,951 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-28 02:39:05,952 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-28 02:39:05,952 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-28 02:39:05,953 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-12-28 02:39:05,981 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-28 02:39:05,981 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-28 02:39:05,982 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-28 02:39:05,982 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-28 02:39:05,983 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-28 02:39:05,983 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-28 02:39:05,984 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-28 02:39:05,984 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-28 02:39:05,985 INFO L138 SettingsManager]: * Use SBE=true [2021-12-28 02:39:05,985 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-28 02:39:05,985 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-28 02:39:05,986 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-28 02:39:05,986 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-28 02:39:05,986 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-28 02:39:05,986 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-28 02:39:05,986 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-28 02:39:05,986 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-28 02:39:05,986 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-28 02:39:05,987 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-28 02:39:05,987 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-28 02:39:05,987 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-28 02:39:05,987 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-28 02:39:05,987 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-28 02:39:05,987 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-28 02:39:05,987 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-28 02:39:05,988 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-28 02:39:05,988 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 02:39:06,011 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-28 02:39:06,011 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-28 02:39:06,011 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-28 02:39:06,011 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-28 02:39:06,012 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-28 02:39:06,012 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-28 02:39:06,012 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-28 02:39:06,012 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-28 02:39:06,012 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-28 02:39:06,012 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 613205d4a69cfcfbc25451727273468eeac5e6faf4f74e1e8c3a83a65bc4c664 [2021-12-28 02:39:06,288 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-28 02:39:06,304 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-28 02:39:06,306 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-28 02:39:06,307 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-28 02:39:06,307 INFO L275 PluginConnector]: CDTParser initialized [2021-12-28 02:39:06,308 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/square_7+soft_float_1-3a.c.cil.c [2021-12-28 02:39:06,361 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5c86b0da7/855759e5f1bc4b2b82b58a0d17f84e48/FLAG6b2af665d [2021-12-28 02:39:06,791 INFO L306 CDTParser]: Found 1 translation units. [2021-12-28 02:39:06,791 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/square_7+soft_float_1-3a.c.cil.c [2021-12-28 02:39:06,801 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5c86b0da7/855759e5f1bc4b2b82b58a0d17f84e48/FLAG6b2af665d [2021-12-28 02:39:06,813 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5c86b0da7/855759e5f1bc4b2b82b58a0d17f84e48 [2021-12-28 02:39:06,815 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-28 02:39:06,817 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-28 02:39:06,819 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-28 02:39:06,819 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-28 02:39:06,822 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-28 02:39:06,823 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 02:39:06" (1/1) ... [2021-12-28 02:39:06,823 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@794be213 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:39:06, skipping insertion in model container [2021-12-28 02:39:06,824 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 02:39:06" (1/1) ... [2021-12-28 02:39:06,829 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-28 02:39:06,859 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-28 02:39:07,001 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_7+soft_float_1-3a.c.cil.c[1995,2008] [2021-12-28 02:39:07,007 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_7+soft_float_1-3a.c.cil.c[2364,2377] [2021-12-28 02:39:07,064 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 02:39:07,078 INFO L203 MainTranslator]: Completed pre-run [2021-12-28 02:39:07,092 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_7+soft_float_1-3a.c.cil.c[1995,2008] [2021-12-28 02:39:07,095 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_7+soft_float_1-3a.c.cil.c[2364,2377] [2021-12-28 02:39:07,122 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 02:39:07,137 INFO L208 MainTranslator]: Completed translation [2021-12-28 02:39:07,138 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:39:07 WrapperNode [2021-12-28 02:39:07,138 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-28 02:39:07,139 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-28 02:39:07,139 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-28 02:39:07,139 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-28 02:39:07,143 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:39:07" (1/1) ... [2021-12-28 02:39:07,164 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:39:07" (1/1) ... [2021-12-28 02:39:07,189 INFO L137 Inliner]: procedures = 28, calls = 21, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 164 [2021-12-28 02:39:07,190 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-28 02:39:07,190 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-28 02:39:07,190 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-28 02:39:07,191 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-28 02:39:07,196 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:39:07" (1/1) ... [2021-12-28 02:39:07,197 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:39:07" (1/1) ... [2021-12-28 02:39:07,212 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:39:07" (1/1) ... [2021-12-28 02:39:07,212 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:39:07" (1/1) ... [2021-12-28 02:39:07,217 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:39:07" (1/1) ... [2021-12-28 02:39:07,229 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:39:07" (1/1) ... [2021-12-28 02:39:07,232 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:39:07" (1/1) ... [2021-12-28 02:39:07,241 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-28 02:39:07,242 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-28 02:39:07,243 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-28 02:39:07,244 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-28 02:39:07,244 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:39:07" (1/1) ... [2021-12-28 02:39:07,249 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 02:39:07,257 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 02:39:07,266 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) [2021-12-28 02:39:07,272 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 [2021-12-28 02:39:07,291 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-28 02:39:07,291 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-28 02:39:07,291 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2021-12-28 02:39:07,291 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2021-12-28 02:39:07,291 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-28 02:39:07,292 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-28 02:39:07,292 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-28 02:39:07,292 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-28 02:39:07,347 INFO L234 CfgBuilder]: Building ICFG [2021-12-28 02:39:07,348 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-28 02:39:09,865 INFO L275 CfgBuilder]: Performing block encoding [2021-12-28 02:39:09,870 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-28 02:39:09,870 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-28 02:39:09,871 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 02:39:09 BoogieIcfgContainer [2021-12-28 02:39:09,871 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-28 02:39:09,873 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-28 02:39:09,873 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-28 02:39:09,875 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-28 02:39:09,875 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.12 02:39:06" (1/3) ... [2021-12-28 02:39:09,875 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26df83a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 02:39:09, skipping insertion in model container [2021-12-28 02:39:09,875 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:39:07" (2/3) ... [2021-12-28 02:39:09,876 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26df83a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 02:39:09, skipping insertion in model container [2021-12-28 02:39:09,876 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 02:39:09" (3/3) ... [2021-12-28 02:39:09,877 INFO L111 eAbstractionObserver]: Analyzing ICFG square_7+soft_float_1-3a.c.cil.c [2021-12-28 02:39:09,880 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-28 02:39:09,880 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-28 02:39:09,910 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-28 02:39:09,914 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 [2021-12-28 02:39:09,914 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-28 02:39:09,926 INFO L276 IsEmpty]: Start isEmpty. Operand has 81 states, 67 states have (on average 1.5820895522388059) internal successors, (106), 71 states have internal predecessors, (106), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2021-12-28 02:39:09,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-12-28 02:39:09,929 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 02:39:09,929 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-28 02:39:09,930 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 02:39:09,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 02:39:09,933 INFO L85 PathProgramCache]: Analyzing trace with hash -548115930, now seen corresponding path program 1 times [2021-12-28 02:39:09,941 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-28 02:39:09,941 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1958366503] [2021-12-28 02:39:09,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 02:39:09,942 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-28 02:39:09,942 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-28 02:39:09,944 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) [2021-12-28 02:39:09,967 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-12-28 02:39:10,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:39:10,378 INFO L263 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 1 conjunts are in the unsatisfiable core [2021-12-28 02:39:10,381 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 02:39:10,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 02:39:10,424 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 02:39:10,425 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-28 02:39:10,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1958366503] [2021-12-28 02:39:10,426 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1958366503] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 02:39:10,426 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 02:39:10,426 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-28 02:39:10,433 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006647269] [2021-12-28 02:39:10,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 02:39:10,436 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-28 02:39:10,437 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-28 02:39:10,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-28 02:39:10,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-28 02:39:10,461 INFO L87 Difference]: Start difference. First operand has 81 states, 67 states have (on average 1.5820895522388059) internal successors, (106), 71 states have internal predecessors, (106), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) 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) [2021-12-28 02:39:10,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 02:39:10,480 INFO L93 Difference]: Finished difference Result 157 states and 249 transitions. [2021-12-28 02:39:10,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-28 02:39:10,481 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 [2021-12-28 02:39:10,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 02:39:10,486 INFO L225 Difference]: With dead ends: 157 [2021-12-28 02:39:10,486 INFO L226 Difference]: Without dead ends: 74 [2021-12-28 02:39:10,489 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 [2021-12-28 02:39:10,491 INFO L933 BasicCegarLoop]: 117 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, 117 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 [2021-12-28 02:39:10,493 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 02:39:10,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2021-12-28 02:39:10,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2021-12-28 02:39:10,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 61 states have (on average 1.4918032786885247) internal successors, (91), 64 states have internal predecessors, (91), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-12-28 02:39:10,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 108 transitions. [2021-12-28 02:39:10,520 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 108 transitions. Word has length 7 [2021-12-28 02:39:10,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 02:39:10,521 INFO L470 AbstractCegarLoop]: Abstraction has 74 states and 108 transitions. [2021-12-28 02:39:10,521 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) [2021-12-28 02:39:10,521 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 108 transitions. [2021-12-28 02:39:10,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-12-28 02:39:10,521 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 02:39:10,522 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-28 02:39:10,540 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-12-28 02:39:10,729 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-28 02:39:10,730 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 02:39:10,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 02:39:10,731 INFO L85 PathProgramCache]: Analyzing trace with hash -548056348, now seen corresponding path program 1 times [2021-12-28 02:39:10,731 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-28 02:39:10,731 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1223629414] [2021-12-28 02:39:10,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 02:39:10,732 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-28 02:39:10,732 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-28 02:39:10,733 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) [2021-12-28 02:39:10,734 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process