./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/square_7+soft_float_1-2a.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_1-2a.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 f460772fead60a1176aea731764c3b630060c5177c926c9899f5df040e824856 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ae00767 [2021-12-28 02:38:56,560 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-28 02:38:56,561 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-28 02:38:56,581 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-28 02:38:56,581 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-28 02:38:56,582 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-28 02:38:56,584 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-28 02:38:56,588 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-28 02:38:56,590 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-28 02:38:56,593 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-28 02:38:56,594 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-28 02:38:56,602 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-28 02:38:56,603 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-28 02:38:56,604 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-28 02:38:56,606 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-28 02:38:56,607 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-28 02:38:56,608 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-28 02:38:56,608 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-28 02:38:56,611 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-28 02:38:56,614 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-28 02:38:56,615 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-28 02:38:56,615 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-28 02:38:56,616 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-28 02:38:56,617 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-28 02:38:56,618 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-28 02:38:56,618 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-28 02:38:56,618 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-28 02:38:56,619 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-28 02:38:56,619 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-28 02:38:56,620 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-28 02:38:56,620 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-28 02:38:56,621 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-28 02:38:56,621 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-28 02:38:56,622 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-28 02:38:56,622 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-28 02:38:56,622 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-28 02:38:56,623 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-28 02:38:56,623 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-28 02:38:56,623 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-28 02:38:56,624 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-28 02:38:56,624 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-28 02:38:56,638 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-28 02:38:56,663 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-28 02:38:56,663 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-28 02:38:56,664 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-28 02:38:56,664 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-28 02:38:56,665 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-28 02:38:56,665 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-28 02:38:56,666 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-28 02:38:56,666 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-28 02:38:56,667 INFO L138 SettingsManager]: * Use SBE=true [2021-12-28 02:38:56,667 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-28 02:38:56,667 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-28 02:38:56,668 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-28 02:38:56,668 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-28 02:38:56,668 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-28 02:38:56,668 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-28 02:38:56,668 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-28 02:38:56,668 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-28 02:38:56,669 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-28 02:38:56,669 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-28 02:38:56,669 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-28 02:38:56,669 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-28 02:38:56,669 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-28 02:38:56,669 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-28 02:38:56,670 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-28 02:38:56,670 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 02:38:56,670 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-28 02:38:56,670 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-28 02:38:56,670 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-28 02:38:56,670 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-28 02:38:56,671 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-28 02:38:56,671 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-28 02:38:56,671 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-28 02:38:56,671 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-28 02:38:56,671 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f460772fead60a1176aea731764c3b630060c5177c926c9899f5df040e824856 [2021-12-28 02:38:56,939 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-28 02:38:56,964 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-28 02:38:56,967 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-28 02:38:56,968 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-28 02:38:56,969 INFO L275 PluginConnector]: CDTParser initialized [2021-12-28 02:38:56,970 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/square_7+soft_float_1-2a.c.cil.c [2021-12-28 02:38:57,012 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dcb1d67ab/220eaedca8a042f888cde97c6cb97647/FLAGfe7fc5351 [2021-12-28 02:38:57,441 INFO L306 CDTParser]: Found 1 translation units. [2021-12-28 02:38:57,441 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/square_7+soft_float_1-2a.c.cil.c [2021-12-28 02:38:57,448 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dcb1d67ab/220eaedca8a042f888cde97c6cb97647/FLAGfe7fc5351 [2021-12-28 02:38:57,459 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dcb1d67ab/220eaedca8a042f888cde97c6cb97647 [2021-12-28 02:38:57,461 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-28 02:38:57,462 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-28 02:38:57,464 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-28 02:38:57,464 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-28 02:38:57,469 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-28 02:38:57,470 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 02:38:57" (1/1) ... [2021-12-28 02:38:57,472 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4dee9988 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:38:57, skipping insertion in model container [2021-12-28 02:38:57,472 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 02:38:57" (1/1) ... [2021-12-28 02:38:57,481 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-28 02:38:57,507 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-28 02:38:57,613 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_1-2a.c.cil.c[1995,2008] [2021-12-28 02:38:57,616 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_1-2a.c.cil.c[2389,2402] [2021-12-28 02:38:57,672 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 02:38:57,678 INFO L203 MainTranslator]: Completed pre-run [2021-12-28 02:38:57,692 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_1-2a.c.cil.c[1995,2008] [2021-12-28 02:38:57,694 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_1-2a.c.cil.c[2389,2402] [2021-12-28 02:38:57,723 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 02:38:57,732 INFO L208 MainTranslator]: Completed translation [2021-12-28 02:38:57,733 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:38:57 WrapperNode [2021-12-28 02:38:57,734 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-28 02:38:57,735 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-28 02:38:57,735 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-28 02:38:57,735 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-28 02:38:57,740 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:38:57" (1/1) ... [2021-12-28 02:38:57,746 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:38:57" (1/1) ... [2021-12-28 02:38:57,775 INFO L137 Inliner]: procedures = 27, calls = 20, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 169 [2021-12-28 02:38:57,776 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-28 02:38:57,776 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-28 02:38:57,776 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-28 02:38:57,776 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-28 02:38:57,786 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:38:57" (1/1) ... [2021-12-28 02:38:57,786 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:38:57" (1/1) ... [2021-12-28 02:38:57,788 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:38:57" (1/1) ... [2021-12-28 02:38:57,788 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:38:57" (1/1) ... [2021-12-28 02:38:57,792 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:38:57" (1/1) ... [2021-12-28 02:38:57,819 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:38:57" (1/1) ... [2021-12-28 02:38:57,821 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:38:57" (1/1) ... [2021-12-28 02:38:57,823 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-28 02:38:57,824 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-28 02:38:57,824 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-28 02:38:57,824 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-28 02:38:57,825 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:38:57" (1/1) ... [2021-12-28 02:38:57,833 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 02:38:57,842 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 02:38:57,860 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-28 02:38:57,876 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 02:38:57,897 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-28 02:38:57,898 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2021-12-28 02:38:57,898 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2021-12-28 02:38:57,898 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-28 02:38:57,898 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-28 02:38:57,900 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-28 02:38:57,900 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-28 02:38:57,900 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-28 02:38:57,958 INFO L234 CfgBuilder]: Building ICFG [2021-12-28 02:38:57,960 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-28 02:38:58,259 INFO L275 CfgBuilder]: Performing block encoding [2021-12-28 02:38:58,264 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-28 02:38:58,264 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-28 02:38:58,266 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 02:38:58 BoogieIcfgContainer [2021-12-28 02:38:58,266 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-28 02:38:58,267 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-28 02:38:58,268 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-28 02:38:58,270 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-28 02:38:58,270 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.12 02:38:57" (1/3) ... [2021-12-28 02:38:58,271 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@380cce5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 02:38:58, skipping insertion in model container [2021-12-28 02:38:58,271 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:38:57" (2/3) ... [2021-12-28 02:38:58,271 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@380cce5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 02:38:58, skipping insertion in model container [2021-12-28 02:38:58,276 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 02:38:58" (3/3) ... [2021-12-28 02:38:58,277 INFO L111 eAbstractionObserver]: Analyzing ICFG square_7+soft_float_1-2a.c.cil.c [2021-12-28 02:38:58,281 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-28 02:38:58,282 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-28 02:38:58,325 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-28 02:38:58,331 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 02:38:58,331 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-28 02:38:58,355 INFO L276 IsEmpty]: Start isEmpty. Operand has 81 states, 68 states have (on average 1.588235294117647) internal successors, (108), 72 states have internal predecessors, (108), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-12-28 02:38:58,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-12-28 02:38:58,359 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 02:38:58,359 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-28 02:38:58,359 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 02:38:58,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 02:38:58,363 INFO L85 PathProgramCache]: Analyzing trace with hash -548115930, now seen corresponding path program 1 times [2021-12-28 02:38:58,370 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 02:38:58,370 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146123315] [2021-12-28 02:38:58,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 02:38:58,371 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 02:38:58,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:38:58,477 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 02:38:58,478 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 02:38:58,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146123315] [2021-12-28 02:38:58,478 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146123315] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 02:38:58,479 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 02:38:58,479 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-28 02:38:58,480 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753142550] [2021-12-28 02:38:58,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 02:38:58,483 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-28 02:38:58,484 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 02:38:58,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-28 02:38:58,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-28 02:38:58,518 INFO L87 Difference]: Start difference. First operand has 81 states, 68 states have (on average 1.588235294117647) internal successors, (108), 72 states have internal predecessors, (108), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 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) [2021-12-28 02:38:58,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 02:38:58,553 INFO L93 Difference]: Finished difference Result 157 states and 248 transitions. [2021-12-28 02:38:58,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-28 02:38:58,556 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 02:38:58,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 02:38:58,567 INFO L225 Difference]: With dead ends: 157 [2021-12-28 02:38:58,568 INFO L226 Difference]: Without dead ends: 74 [2021-12-28 02:38:58,572 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 02:38:58,575 INFO L933 BasicCegarLoop]: 116 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, 116 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 02:38:58,577 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 02:38:58,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2021-12-28 02:38:58,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2021-12-28 02:38:58,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 62 states have (on average 1.4838709677419355) internal successors, (92), 65 states have internal predecessors, (92), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-12-28 02:38:58,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 107 transitions. [2021-12-28 02:38:58,621 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 107 transitions. Word has length 7 [2021-12-28 02:38:58,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 02:38:58,621 INFO L470 AbstractCegarLoop]: Abstraction has 74 states and 107 transitions. [2021-12-28 02:38:58,621 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 02:38:58,621 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 107 transitions. [2021-12-28 02:38:58,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-12-28 02:38:58,622 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 02:38:58,623 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-28 02:38:58,623 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-28 02:38:58,623 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 02:38:58,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 02:38:58,624 INFO L85 PathProgramCache]: Analyzing trace with hash -548056348, now seen corresponding path program 1 times [2021-12-28 02:38:58,624 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 02:38:58,624 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720706086] [2021-12-28 02:38:58,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 02:38:58,626 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 02:38:58,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 02:38:58,648 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-28 02:38:58,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 02:38:58,669 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-28 02:38:58,669 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-28 02:38:58,671 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2021-12-28 02:38:58,672 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2021-12-28 02:38:58,672 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-28 02:38:58,677 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-12-28 02:38:58,680 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-28 02:38:58,700 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.12 02:38:58 BoogieIcfgContainer [2021-12-28 02:38:58,700 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-28 02:38:58,701 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-28 02:38:58,701 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-28 02:38:58,701 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-28 02:38:58,702 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 02:38:58" (3/4) ... [2021-12-28 02:38:58,704 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-12-28 02:38:58,704 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-28 02:38:58,705 INFO L158 Benchmark]: Toolchain (without parser) took 1242.64ms. Allocated memory was 48.2MB in the beginning and 58.7MB in the end (delta: 10.5MB). Free memory was 24.0MB in the beginning and 26.1MB in the end (delta: -2.1MB). Peak memory consumption was 7.1MB. Max. memory is 16.1GB. [2021-12-28 02:38:58,706 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 48.2MB. Free memory was 31.0MB in the beginning and 31.0MB in the end (delta: 31.8kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-28 02:38:58,708 INFO L158 Benchmark]: CACSL2BoogieTranslator took 270.04ms. Allocated memory was 48.2MB in the beginning and 58.7MB in the end (delta: 10.5MB). Free memory was 23.7MB in the beginning and 37.8MB in the end (delta: -14.1MB). Peak memory consumption was 5.6MB. Max. memory is 16.1GB. [2021-12-28 02:38:58,708 INFO L158 Benchmark]: Boogie Procedure Inliner took 41.11ms. Allocated memory is still 58.7MB. Free memory was 37.8MB in the beginning and 35.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-28 02:38:58,710 INFO L158 Benchmark]: Boogie Preprocessor took 46.98ms. Allocated memory is still 58.7MB. Free memory was 35.7MB in the beginning and 34.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-28 02:38:58,710 INFO L158 Benchmark]: RCFGBuilder took 442.33ms. Allocated memory is still 58.7MB. Free memory was 34.1MB in the beginning and 33.2MB in the end (delta: 912.4kB). Peak memory consumption was 12.5MB. Max. memory is 16.1GB. [2021-12-28 02:38:58,710 INFO L158 Benchmark]: TraceAbstraction took 432.80ms. Allocated memory is still 58.7MB. Free memory was 32.7MB in the beginning and 26.3MB in the end (delta: 6.4MB). Peak memory consumption was 5.3MB. Max. memory is 16.1GB. [2021-12-28 02:38:58,710 INFO L158 Benchmark]: Witness Printer took 3.24ms. Allocated memory is still 58.7MB. Free memory was 26.3MB in the beginning and 26.1MB in the end (delta: 258.0kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-28 02:38:58,715 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 48.2MB. Free memory was 31.0MB in the beginning and 31.0MB in the end (delta: 31.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 270.04ms. Allocated memory was 48.2MB in the beginning and 58.7MB in the end (delta: 10.5MB). Free memory was 23.7MB in the beginning and 37.8MB in the end (delta: -14.1MB). Peak memory consumption was 5.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 41.11ms. Allocated memory is still 58.7MB. Free memory was 37.8MB in the beginning and 35.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 46.98ms. Allocated memory is still 58.7MB. Free memory was 35.7MB in the beginning and 34.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 442.33ms. Allocated memory is still 58.7MB. Free memory was 34.1MB in the beginning and 33.2MB in the end (delta: 912.4kB). Peak memory consumption was 12.5MB. Max. memory is 16.1GB. * TraceAbstraction took 432.80ms. Allocated memory is still 58.7MB. Free memory was 32.7MB in the beginning and 26.3MB in the end (delta: 6.4MB). Peak memory consumption was 5.3MB. Max. memory is 16.1GB. * Witness Printer took 3.24ms. Allocated memory is still 58.7MB. Free memory was 26.3MB in the beginning and 26.1MB in the end (delta: 258.0kB). 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: [L403] COND TRUE __VERIFIER_nondet_int() [L404] 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: 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 3 procedures, 81 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, 116 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, 116 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 02:38:58,751 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_1-2a.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 f460772fead60a1176aea731764c3b630060c5177c926c9899f5df040e824856 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ae00767 [2021-12-28 02:39:00,385 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-28 02:39:00,387 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-28 02:39:00,419 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-28 02:39:00,420 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-28 02:39:00,422 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-28 02:39:00,424 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-28 02:39:00,428 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-28 02:39:00,430 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-28 02:39:00,433 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-28 02:39:00,434 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-28 02:39:00,437 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-28 02:39:00,437 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-28 02:39:00,439 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-28 02:39:00,440 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-28 02:39:00,443 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-28 02:39:00,444 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-28 02:39:00,444 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-28 02:39:00,446 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-28 02:39:00,450 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-28 02:39:00,451 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-28 02:39:00,452 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-28 02:39:00,453 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-28 02:39:00,454 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-28 02:39:00,459 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-28 02:39:00,460 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-28 02:39:00,460 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-28 02:39:00,461 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-28 02:39:00,462 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-28 02:39:00,463 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-28 02:39:00,463 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-28 02:39:00,463 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-28 02:39:00,464 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-28 02:39:00,465 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-28 02:39:00,466 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-28 02:39:00,466 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-28 02:39:00,466 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-28 02:39:00,467 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-28 02:39:00,467 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-28 02:39:00,468 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-28 02:39:00,468 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-28 02:39:00,472 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-12-28 02:39:00,500 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-28 02:39:00,500 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-28 02:39:00,501 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-28 02:39:00,501 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-28 02:39:00,502 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-28 02:39:00,502 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-28 02:39:00,503 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-28 02:39:00,504 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-28 02:39:00,504 INFO L138 SettingsManager]: * Use SBE=true [2021-12-28 02:39:00,504 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-28 02:39:00,505 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-28 02:39:00,505 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-28 02:39:00,505 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-28 02:39:00,505 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-28 02:39:00,505 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-28 02:39:00,506 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-28 02:39:00,506 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-28 02:39:00,506 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-28 02:39:00,506 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-28 02:39:00,506 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-28 02:39:00,506 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-28 02:39:00,507 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-28 02:39:00,507 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-28 02:39:00,507 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-28 02:39:00,507 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-28 02:39:00,507 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-28 02:39:00,514 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 02:39:00,515 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-28 02:39:00,515 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-28 02:39:00,515 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-28 02:39:00,515 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-28 02:39:00,515 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-28 02:39:00,516 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-28 02:39:00,516 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-28 02:39:00,516 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-28 02:39:00,516 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-28 02:39:00,516 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f460772fead60a1176aea731764c3b630060c5177c926c9899f5df040e824856 [2021-12-28 02:39:00,781 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-28 02:39:00,797 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-28 02:39:00,799 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-28 02:39:00,800 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-28 02:39:00,800 INFO L275 PluginConnector]: CDTParser initialized [2021-12-28 02:39:00,801 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/square_7+soft_float_1-2a.c.cil.c [2021-12-28 02:39:00,847 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1ab0e2b70/589bdaa419424caaa10bcb5c37be4c04/FLAGa5fb57fda [2021-12-28 02:39:01,255 INFO L306 CDTParser]: Found 1 translation units. [2021-12-28 02:39:01,256 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/square_7+soft_float_1-2a.c.cil.c [2021-12-28 02:39:01,265 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1ab0e2b70/589bdaa419424caaa10bcb5c37be4c04/FLAGa5fb57fda [2021-12-28 02:39:01,631 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1ab0e2b70/589bdaa419424caaa10bcb5c37be4c04 [2021-12-28 02:39:01,633 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-28 02:39:01,634 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-28 02:39:01,640 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-28 02:39:01,640 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-28 02:39:01,642 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-28 02:39:01,643 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 02:39:01" (1/1) ... [2021-12-28 02:39:01,644 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70e5a5d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:39:01, skipping insertion in model container [2021-12-28 02:39:01,644 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 02:39:01" (1/1) ... [2021-12-28 02:39:01,650 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-28 02:39:01,684 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-28 02:39:01,827 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_1-2a.c.cil.c[1995,2008] [2021-12-28 02:39:01,839 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_1-2a.c.cil.c[2389,2402] [2021-12-28 02:39:01,882 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 02:39:01,892 INFO L203 MainTranslator]: Completed pre-run [2021-12-28 02:39:01,913 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_1-2a.c.cil.c[1995,2008] [2021-12-28 02:39:01,914 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_1-2a.c.cil.c[2389,2402] [2021-12-28 02:39:01,930 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 02:39:01,943 INFO L208 MainTranslator]: Completed translation [2021-12-28 02:39:01,944 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:39:01 WrapperNode [2021-12-28 02:39:01,944 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-28 02:39:01,945 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-28 02:39:01,945 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-28 02:39:01,945 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-28 02:39:01,950 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:39:01" (1/1) ... [2021-12-28 02:39:01,972 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:39:01" (1/1) ... [2021-12-28 02:39:01,996 INFO L137 Inliner]: procedures = 28, calls = 20, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 165 [2021-12-28 02:39:01,997 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-28 02:39:01,997 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-28 02:39:01,998 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-28 02:39:01,998 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-28 02:39:02,003 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:39:01" (1/1) ... [2021-12-28 02:39:02,004 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:39:01" (1/1) ... [2021-12-28 02:39:02,014 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:39:01" (1/1) ... [2021-12-28 02:39:02,014 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:39:01" (1/1) ... [2021-12-28 02:39:02,029 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:39:01" (1/1) ... [2021-12-28 02:39:02,037 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:39:01" (1/1) ... [2021-12-28 02:39:02,041 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:39:01" (1/1) ... [2021-12-28 02:39:02,046 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-28 02:39:02,049 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-28 02:39:02,049 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-28 02:39:02,050 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-28 02:39:02,050 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:39:01" (1/1) ... [2021-12-28 02:39:02,055 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 02:39:02,062 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 02:39:02,081 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 02:39:02,102 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 02:39:02,115 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-28 02:39:02,115 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-28 02:39:02,115 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2021-12-28 02:39:02,116 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2021-12-28 02:39:02,116 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-28 02:39:02,116 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-28 02:39:02,116 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-28 02:39:02,116 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-28 02:39:02,198 INFO L234 CfgBuilder]: Building ICFG [2021-12-28 02:39:02,200 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-28 02:39:04,756 INFO L275 CfgBuilder]: Performing block encoding [2021-12-28 02:39:04,762 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-28 02:39:04,762 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-28 02:39:04,763 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 02:39:04 BoogieIcfgContainer [2021-12-28 02:39:04,763 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-28 02:39:04,765 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-28 02:39:04,766 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-28 02:39:04,768 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-28 02:39:04,768 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.12 02:39:01" (1/3) ... [2021-12-28 02:39:04,769 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c59089e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 02:39:04, skipping insertion in model container [2021-12-28 02:39:04,769 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 02:39:01" (2/3) ... [2021-12-28 02:39:04,769 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c59089e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 02:39:04, skipping insertion in model container [2021-12-28 02:39:04,769 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 02:39:04" (3/3) ... [2021-12-28 02:39:04,770 INFO L111 eAbstractionObserver]: Analyzing ICFG square_7+soft_float_1-2a.c.cil.c [2021-12-28 02:39:04,774 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-28 02:39:04,774 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-28 02:39:04,804 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-28 02:39:04,810 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 02:39:04,810 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-28 02:39:04,828 INFO L276 IsEmpty]: Start isEmpty. Operand has 81 states, 68 states have (on average 1.588235294117647) internal successors, (108), 72 states have internal predecessors, (108), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-12-28 02:39:04,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-12-28 02:39:04,831 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 02:39:04,831 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-28 02:39:04,832 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 02:39:04,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 02:39:04,836 INFO L85 PathProgramCache]: Analyzing trace with hash -548115930, now seen corresponding path program 1 times [2021-12-28 02:39:04,843 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-28 02:39:04,843 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [501832997] [2021-12-28 02:39:04,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 02:39:04,844 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-28 02:39:04,845 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-28 02:39:04,846 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 02:39:04,847 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 02:39:05,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 02:39:05,262 INFO L263 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 1 conjunts are in the unsatisfiable core [2021-12-28 02:39:05,264 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 02:39:05,307 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 02:39:05,308 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 02:39:05,308 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-28 02:39:05,309 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [501832997] [2021-12-28 02:39:05,309 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [501832997] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 02:39:05,309 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 02:39:05,309 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-28 02:39:05,311 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222280163] [2021-12-28 02:39:05,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 02:39:05,314 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-28 02:39:05,314 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-28 02:39:05,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-28 02:39:05,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-28 02:39:05,348 INFO L87 Difference]: Start difference. First operand has 81 states, 68 states have (on average 1.588235294117647) internal successors, (108), 72 states have internal predecessors, (108), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 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) [2021-12-28 02:39:05,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 02:39:05,377 INFO L93 Difference]: Finished difference Result 157 states and 248 transitions. [2021-12-28 02:39:05,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-28 02:39:05,379 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 02:39:05,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 02:39:05,385 INFO L225 Difference]: With dead ends: 157 [2021-12-28 02:39:05,385 INFO L226 Difference]: Without dead ends: 74 [2021-12-28 02:39:05,388 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 02:39:05,390 INFO L933 BasicCegarLoop]: 116 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, 116 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 02:39:05,391 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 02:39:05,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2021-12-28 02:39:05,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2021-12-28 02:39:05,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 62 states have (on average 1.4838709677419355) internal successors, (92), 65 states have internal predecessors, (92), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-12-28 02:39:05,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 107 transitions. [2021-12-28 02:39:05,426 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 107 transitions. Word has length 7 [2021-12-28 02:39:05,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 02:39:05,426 INFO L470 AbstractCegarLoop]: Abstraction has 74 states and 107 transitions. [2021-12-28 02:39:05,426 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 02:39:05,427 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 107 transitions. [2021-12-28 02:39:05,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-12-28 02:39:05,427 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 02:39:05,427 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-28 02:39:05,443 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-12-28 02:39:05,639 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 02:39:05,640 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 02:39:05,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 02:39:05,640 INFO L85 PathProgramCache]: Analyzing trace with hash -548056348, now seen corresponding path program 1 times [2021-12-28 02:39:05,641 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-28 02:39:05,641 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1656308572] [2021-12-28 02:39:05,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 02:39:05,641 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-28 02:39:05,641 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-28 02:39:05,642 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 02:39:05,644 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process