./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-benchs/filter2_set.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f4b24e32 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/float-benchs/filter2_set.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 1052e6ec9925823ba5a2ccaaebf89a3336e5de0f5b82a0218158837daebc1dd1 --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 14:11:24,726 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 14:11:24,731 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 14:11:24,765 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 14:11:24,766 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 14:11:24,767 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 14:11:24,768 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 14:11:24,769 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 14:11:24,770 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 14:11:24,770 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 14:11:24,771 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 14:11:24,772 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 14:11:24,772 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 14:11:24,773 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 14:11:24,774 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 14:11:24,774 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 14:11:24,775 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 14:11:24,776 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 14:11:24,777 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 14:11:24,778 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 14:11:24,779 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 14:11:24,780 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 14:11:24,781 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 14:11:24,782 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 14:11:24,782 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 14:11:24,784 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 14:11:24,785 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 14:11:24,785 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 14:11:24,786 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 14:11:24,786 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 14:11:24,787 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 14:11:24,787 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 14:11:24,788 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 14:11:24,788 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 14:11:24,789 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 14:11:24,790 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 14:11:24,790 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 14:11:24,791 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 14:11:24,791 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 14:11:24,791 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 14:11:24,792 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 14:11:24,792 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 14:11:24,793 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-13 14:11:24,817 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 14:11:24,818 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 14:11:24,818 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 14:11:24,818 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 14:11:24,819 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 14:11:24,819 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 14:11:24,819 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 14:11:24,819 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 14:11:24,820 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 14:11:24,820 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 14:11:24,821 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 14:11:24,821 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 14:11:24,821 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 14:11:24,821 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 14:11:24,822 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 14:11:24,822 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 14:11:24,822 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 14:11:24,822 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 14:11:24,822 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 14:11:24,822 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 14:11:24,822 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 14:11:24,823 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 14:11:24,823 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 14:11:24,823 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 14:11:24,823 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 14:11:24,823 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 14:11:24,824 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 14:11:24,824 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 14:11:24,824 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 14:11:24,824 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 14:11:24,824 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 14:11:24,825 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 14:11:24,825 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 14:11:24,825 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1052e6ec9925823ba5a2ccaaebf89a3336e5de0f5b82a0218158837daebc1dd1 [2022-07-13 14:11:25,024 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 14:11:25,048 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 14:11:25,049 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 14:11:25,050 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 14:11:25,051 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 14:11:25,052 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/filter2_set.c [2022-07-13 14:11:25,117 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b15ddd927/a67cd65e57494a9ab558759e1c68dd9e/FLAGb871bef62 [2022-07-13 14:11:25,457 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 14:11:25,457 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/filter2_set.c [2022-07-13 14:11:25,464 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b15ddd927/a67cd65e57494a9ab558759e1c68dd9e/FLAGb871bef62 [2022-07-13 14:11:25,472 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b15ddd927/a67cd65e57494a9ab558759e1c68dd9e [2022-07-13 14:11:25,474 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 14:11:25,475 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 14:11:25,476 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 14:11:25,476 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 14:11:25,478 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 14:11:25,479 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 02:11:25" (1/1) ... [2022-07-13 14:11:25,479 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48b2e06e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:11:25, skipping insertion in model container [2022-07-13 14:11:25,480 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 02:11:25" (1/1) ... [2022-07-13 14:11:25,484 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 14:11:25,495 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 14:11:25,604 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/filter2_set.c[664,677] [2022-07-13 14:11:25,624 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 14:11:25,631 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 14:11:25,641 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/filter2_set.c[664,677] [2022-07-13 14:11:25,649 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 14:11:25,664 INFO L208 MainTranslator]: Completed translation [2022-07-13 14:11:25,664 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:11:25 WrapperNode [2022-07-13 14:11:25,664 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 14:11:25,665 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 14:11:25,665 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 14:11:25,665 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 14:11:25,670 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:11:25" (1/1) ... [2022-07-13 14:11:25,677 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:11:25" (1/1) ... [2022-07-13 14:11:25,695 INFO L137 Inliner]: procedures = 14, calls = 16, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 70 [2022-07-13 14:11:25,695 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 14:11:25,696 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 14:11:25,696 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 14:11:25,696 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 14:11:25,702 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:11:25" (1/1) ... [2022-07-13 14:11:25,702 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:11:25" (1/1) ... [2022-07-13 14:11:25,703 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:11:25" (1/1) ... [2022-07-13 14:11:25,704 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:11:25" (1/1) ... [2022-07-13 14:11:25,706 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:11:25" (1/1) ... [2022-07-13 14:11:25,708 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:11:25" (1/1) ... [2022-07-13 14:11:25,709 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:11:25" (1/1) ... [2022-07-13 14:11:25,710 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 14:11:25,711 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 14:11:25,711 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 14:11:25,711 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 14:11:25,712 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:11:25" (1/1) ... [2022-07-13 14:11:25,731 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 14:11:25,739 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 14:11:25,749 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) [2022-07-13 14:11:25,751 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 [2022-07-13 14:11:25,772 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 14:11:25,772 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-13 14:11:25,773 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-13 14:11:25,773 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 14:11:25,773 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 14:11:25,773 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 14:11:25,820 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 14:11:25,821 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 14:11:25,956 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 14:11:25,960 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 14:11:25,965 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-13 14:11:25,967 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 02:11:25 BoogieIcfgContainer [2022-07-13 14:11:25,967 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 14:11:25,968 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 14:11:25,983 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 14:11:25,986 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 14:11:25,986 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 02:11:25" (1/3) ... [2022-07-13 14:11:25,987 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1915a734 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 02:11:25, skipping insertion in model container [2022-07-13 14:11:25,987 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:11:25" (2/3) ... [2022-07-13 14:11:25,987 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1915a734 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 02:11:25, skipping insertion in model container [2022-07-13 14:11:25,987 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 02:11:25" (3/3) ... [2022-07-13 14:11:25,988 INFO L111 eAbstractionObserver]: Analyzing ICFG filter2_set.c [2022-07-13 14:11:25,997 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 14:11:25,998 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-13 14:11:26,051 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 14:11:26,062 INFO L357 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, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@7e254ac9, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@10f38506 [2022-07-13 14:11:26,063 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-13 14:11:26,073 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 16 states have (on average 1.3125) internal successors, (21), 17 states have internal predecessors, (21), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-07-13 14:11:26,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-07-13 14:11:26,082 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 14:11:26,082 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 14:11:26,083 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 14:11:26,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 14:11:26,089 INFO L85 PathProgramCache]: Analyzing trace with hash 1697849372, now seen corresponding path program 1 times [2022-07-13 14:11:26,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 14:11:26,096 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596431923] [2022-07-13 14:11:26,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 14:11:26,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 14:11:26,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 14:11:26,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 14:11:26,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 14:11:26,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-13 14:11:26,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 14:11:26,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 14:11:26,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 14:11:26,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 14:11:26,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 14:11:26,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-13 14:11:26,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 14:11:26,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-13 14:11:26,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 14:11:26,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-13 14:11:26,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 14:11:26,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-13 14:11:26,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 14:11:26,281 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-07-13 14:11:26,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 14:11:26,282 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596431923] [2022-07-13 14:11:26,282 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1596431923] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 14:11:26,282 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 14:11:26,283 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 14:11:26,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031273441] [2022-07-13 14:11:26,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 14:11:26,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-13 14:11:26,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 14:11:26,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-13 14:11:26,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-13 14:11:26,312 INFO L87 Difference]: Start difference. First operand has 27 states, 16 states have (on average 1.3125) internal successors, (21), 17 states have internal predecessors, (21), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 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 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-13 14:11:26,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 14:11:26,336 INFO L93 Difference]: Finished difference Result 51 states and 78 transitions. [2022-07-13 14:11:26,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-13 14:11:26,337 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 2 states have call successors, (8) Word has length 48 [2022-07-13 14:11:26,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 14:11:26,344 INFO L225 Difference]: With dead ends: 51 [2022-07-13 14:11:26,345 INFO L226 Difference]: Without dead ends: 23 [2022-07-13 14:11:26,349 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-13 14:11:26,353 INFO L413 NwaCegarLoop]: 34 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, 34 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 [2022-07-13 14:11:26,355 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 14:11:26,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-07-13 14:11:26,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2022-07-13 14:11:26,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 13 states have (on average 1.0769230769230769) internal successors, (14), 13 states have internal predecessors, (14), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-07-13 14:11:26,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 30 transitions. [2022-07-13 14:11:26,386 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 30 transitions. Word has length 48 [2022-07-13 14:11:26,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 14:11:26,387 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 30 transitions. [2022-07-13 14:11:26,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 1 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-13 14:11:26,388 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 30 transitions. [2022-07-13 14:11:26,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-07-13 14:11:26,390 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 14:11:26,391 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 14:11:26,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 14:11:26,391 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 14:11:26,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 14:11:26,392 INFO L85 PathProgramCache]: Analyzing trace with hash -1417424168, now seen corresponding path program 1 times [2022-07-13 14:11:26,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 14:11:26,393 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30657425] [2022-07-13 14:11:26,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 14:11:26,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 14:11:26,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 14:11:26,458 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-13 14:11:26,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 14:11:26,506 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-13 14:11:26,507 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-13 14:11:26,508 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-07-13 14:11:26,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-13 14:11:26,513 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1] [2022-07-13 14:11:26,515 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-13 14:11:26,548 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.07 02:11:26 BoogieIcfgContainer [2022-07-13 14:11:26,548 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-13 14:11:26,549 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-13 14:11:26,549 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-13 14:11:26,549 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-13 14:11:26,549 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 02:11:25" (3/4) ... [2022-07-13 14:11:26,551 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-07-13 14:11:26,552 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-13 14:11:26,553 INFO L158 Benchmark]: Toolchain (without parser) took 1077.22ms. Allocated memory was 102.8MB in the beginning and 130.0MB in the end (delta: 27.3MB). Free memory was 72.9MB in the beginning and 93.1MB in the end (delta: -20.2MB). Peak memory consumption was 7.6MB. Max. memory is 16.1GB. [2022-07-13 14:11:26,555 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 102.8MB. Free memory was 59.5MB in the beginning and 59.5MB in the end (delta: 48.0kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-13 14:11:26,557 INFO L158 Benchmark]: CACSL2BoogieTranslator took 188.63ms. Allocated memory was 102.8MB in the beginning and 130.0MB in the end (delta: 27.3MB). Free memory was 72.7MB in the beginning and 104.5MB in the end (delta: -31.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-13 14:11:26,558 INFO L158 Benchmark]: Boogie Procedure Inliner took 30.15ms. Allocated memory is still 130.0MB. Free memory was 104.5MB in the beginning and 102.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-13 14:11:26,560 INFO L158 Benchmark]: Boogie Preprocessor took 14.35ms. Allocated memory is still 130.0MB. Free memory was 102.8MB in the beginning and 101.6MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-13 14:11:26,560 INFO L158 Benchmark]: RCFGBuilder took 256.36ms. Allocated memory is still 130.0MB. Free memory was 101.6MB in the beginning and 91.9MB in the end (delta: 9.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-13 14:11:26,561 INFO L158 Benchmark]: TraceAbstraction took 580.14ms. Allocated memory is still 130.0MB. Free memory was 91.1MB in the beginning and 93.1MB in the end (delta: -2.0MB). Peak memory consumption was 272.9kB. Max. memory is 16.1GB. [2022-07-13 14:11:26,561 INFO L158 Benchmark]: Witness Printer took 3.01ms. Allocated memory is still 130.0MB. Free memory is still 93.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-13 14:11:26,565 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 102.8MB. Free memory was 59.5MB in the beginning and 59.5MB in the end (delta: 48.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 188.63ms. Allocated memory was 102.8MB in the beginning and 130.0MB in the end (delta: 27.3MB). Free memory was 72.7MB in the beginning and 104.5MB in the end (delta: -31.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 30.15ms. Allocated memory is still 130.0MB. Free memory was 104.5MB in the beginning and 102.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 14.35ms. Allocated memory is still 130.0MB. Free memory was 102.8MB in the beginning and 101.6MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 256.36ms. Allocated memory is still 130.0MB. Free memory was 101.6MB in the beginning and 91.9MB in the end (delta: 9.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 580.14ms. Allocated memory is still 130.0MB. Free memory was 91.1MB in the beginning and 93.1MB in the end (delta: -2.0MB). Peak memory consumption was 272.9kB. Max. memory is 16.1GB. * Witness Printer took 3.01ms. Allocated memory is still 130.0MB. Free memory is still 93.1MB. 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: 17]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 57, overapproximation of to_real at line 43, overapproximation of someBinaryArithmeticDOUBLEoperation at line 55. Possible FailurePath: [L22] double E, E0, E1, S0, S1, S; [L23] double A1, A2, A3, B1, B2; [L24] int i; [L26] A1 = __VERIFIER_nondet_double() [L27] A2 = __VERIFIER_nondet_double() [L28] A3 = __VERIFIER_nondet_double() [L29] B1 = __VERIFIER_nondet_double() [L30] B2 = __VERIFIER_nondet_double() [L31] CALL assume_abort_if_not(A1 >= 0.69 && A1 <= 0.71) VAL [\old(cond)=1] [L15] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L31] RET assume_abort_if_not(A1 >= 0.69 && A1 <= 0.71) [L32] CALL assume_abort_if_not(A2 >= -1.31 && A2 <= -1.29) VAL [\old(cond)=1] [L15] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L32] RET assume_abort_if_not(A2 >= -1.31 && A2 <= -1.29) [L33] CALL assume_abort_if_not(A3 >= 1.09 && A3 <= 1.11) VAL [\old(cond)=1] [L15] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L33] RET assume_abort_if_not(A3 >= 1.09 && A3 <= 1.11) [L34] CALL assume_abort_if_not(B1 >= 1.39 && B1 <= 1.41) VAL [\old(cond)=1] [L15] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L34] RET assume_abort_if_not(B1 >= 1.39 && B1 <= 1.41) [L35] CALL assume_abort_if_not(B2 >= -0.71 && B2 <= -0.69) VAL [\old(cond)=1] [L15] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L35] RET assume_abort_if_not(B2 >= -0.71 && B2 <= -0.69) [L38] E = __VERIFIER_nondet_double() [L39] E0 = __VERIFIER_nondet_double() [L40] CALL assume_abort_if_not(E >= 0. && E <= 1.) VAL [\old(cond)=1] [L15] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L40] RET assume_abort_if_not(E >= 0. && E <= 1.) VAL [E=52, E=51] [L41] CALL assume_abort_if_not(E0 >= 0. && E0 <= 1.) VAL [\old(cond)=1] [L15] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L41] RET assume_abort_if_not(E0 >= 0. && E0 <= 1.) VAL [E=51, E=52] [L43] S0 = 0 [L44] S = 0 [L46] i = 0 VAL [E=51, E=52, i=0] [L46] COND TRUE i <= 1000000 [L47] E1 = E0 [L48] E0 = E [L50] E = __VERIFIER_nondet_double() [L51] CALL assume_abort_if_not(E >= 0. && E <= 1.) VAL [\old(cond)=1] [L15] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L51] RET assume_abort_if_not(E >= 0. && E <= 1.) VAL [E=52, E=51, E=49, i=0] [L53] S1 = S0 [L54] S0 = S [L55] S = A1*E - E0*A2 + E1*A3 + S0*B1 + S1*B2 [L57] CALL __VERIFIER_assert(S >= -100. && S <= 100.) [L17] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L17] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 27 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.5s, OverallIterations: 2, TraceHistogramMax: 8, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 34 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, 34 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 26 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred 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, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 96 NumberOfCodeBlocks, 96 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 47 ConstructedInterpolants, 0 QuantifiedInterpolants, 47 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 112/112 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 [2022-07-13 14:11:26,611 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/float-benchs/filter2_set.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 1052e6ec9925823ba5a2ccaaebf89a3336e5de0f5b82a0218158837daebc1dd1 --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 14:11:28,318 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 14:11:28,320 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 14:11:28,352 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 14:11:28,352 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 14:11:28,353 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 14:11:28,356 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 14:11:28,358 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 14:11:28,359 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 14:11:28,363 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 14:11:28,363 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 14:11:28,365 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 14:11:28,365 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 14:11:28,366 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 14:11:28,367 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 14:11:28,369 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 14:11:28,370 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 14:11:28,371 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 14:11:28,374 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 14:11:28,379 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 14:11:28,380 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 14:11:28,380 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 14:11:28,382 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 14:11:28,382 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 14:11:28,383 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 14:11:28,388 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 14:11:28,388 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 14:11:28,388 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 14:11:28,389 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 14:11:28,389 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 14:11:28,390 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 14:11:28,390 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 14:11:28,391 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 14:11:28,392 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 14:11:28,393 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 14:11:28,393 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 14:11:28,393 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 14:11:28,394 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 14:11:28,394 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 14:11:28,394 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 14:11:28,395 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 14:11:28,396 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 14:11:28,402 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-07-13 14:11:28,424 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 14:11:28,425 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 14:11:28,425 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 14:11:28,425 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 14:11:28,426 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 14:11:28,426 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 14:11:28,426 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 14:11:28,426 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 14:11:28,427 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 14:11:28,427 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 14:11:28,432 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 14:11:28,432 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 14:11:28,432 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 14:11:28,432 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 14:11:28,432 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 14:11:28,433 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 14:11:28,433 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-13 14:11:28,433 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-07-13 14:11:28,433 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-07-13 14:11:28,433 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 14:11:28,433 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 14:11:28,434 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 14:11:28,434 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 14:11:28,434 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 14:11:28,434 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 14:11:28,434 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 14:11:28,434 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 14:11:28,435 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 14:11:28,435 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 14:11:28,435 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 14:11:28,435 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-07-13 14:11:28,435 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-07-13 14:11:28,436 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 14:11:28,436 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 14:11:28,436 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 14:11:28,436 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-07-13 14:11:28,436 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1052e6ec9925823ba5a2ccaaebf89a3336e5de0f5b82a0218158837daebc1dd1 [2022-07-13 14:11:28,681 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 14:11:28,695 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 14:11:28,698 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 14:11:28,698 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 14:11:28,699 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 14:11:28,700 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/filter2_set.c [2022-07-13 14:11:28,742 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/523f70581/5707f4f1568b4d1fa7665a1256898d5a/FLAG5b9c602cd [2022-07-13 14:11:29,091 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 14:11:29,092 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/filter2_set.c [2022-07-13 14:11:29,097 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/523f70581/5707f4f1568b4d1fa7665a1256898d5a/FLAG5b9c602cd [2022-07-13 14:11:29,109 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/523f70581/5707f4f1568b4d1fa7665a1256898d5a [2022-07-13 14:11:29,112 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 14:11:29,113 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 14:11:29,115 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 14:11:29,115 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 14:11:29,117 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 14:11:29,118 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 02:11:29" (1/1) ... [2022-07-13 14:11:29,119 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3cb960b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:11:29, skipping insertion in model container [2022-07-13 14:11:29,119 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 02:11:29" (1/1) ... [2022-07-13 14:11:29,124 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 14:11:29,135 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 14:11:29,247 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/filter2_set.c[664,677] [2022-07-13 14:11:29,275 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 14:11:29,287 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 14:11:29,301 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/filter2_set.c[664,677] [2022-07-13 14:11:29,317 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 14:11:29,328 INFO L208 MainTranslator]: Completed translation [2022-07-13 14:11:29,329 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:11:29 WrapperNode [2022-07-13 14:11:29,329 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 14:11:29,330 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 14:11:29,330 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 14:11:29,330 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 14:11:29,334 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:11:29" (1/1) ... [2022-07-13 14:11:29,351 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:11:29" (1/1) ... [2022-07-13 14:11:29,369 INFO L137 Inliner]: procedures = 15, calls = 16, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 71 [2022-07-13 14:11:29,370 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 14:11:29,371 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 14:11:29,371 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 14:11:29,371 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 14:11:29,376 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:11:29" (1/1) ... [2022-07-13 14:11:29,377 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:11:29" (1/1) ... [2022-07-13 14:11:29,383 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:11:29" (1/1) ... [2022-07-13 14:11:29,384 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:11:29" (1/1) ... [2022-07-13 14:11:29,398 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:11:29" (1/1) ... [2022-07-13 14:11:29,400 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:11:29" (1/1) ... [2022-07-13 14:11:29,405 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:11:29" (1/1) ... [2022-07-13 14:11:29,407 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 14:11:29,408 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 14:11:29,409 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 14:11:29,409 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 14:11:29,410 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:11:29" (1/1) ... [2022-07-13 14:11:29,414 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 14:11:29,421 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 14:11:29,430 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) [2022-07-13 14:11:29,468 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 [2022-07-13 14:11:29,480 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 14:11:29,480 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-07-13 14:11:29,481 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-13 14:11:29,481 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-13 14:11:29,481 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 14:11:29,481 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 14:11:29,536 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 14:11:29,537 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 14:11:31,946 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 14:11:31,949 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 14:11:31,950 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-13 14:11:31,951 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 02:11:31 BoogieIcfgContainer [2022-07-13 14:11:31,951 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 14:11:31,952 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 14:11:31,952 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 14:11:31,954 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 14:11:31,954 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 02:11:29" (1/3) ... [2022-07-13 14:11:31,955 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a370c66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 02:11:31, skipping insertion in model container [2022-07-13 14:11:31,955 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:11:29" (2/3) ... [2022-07-13 14:11:31,955 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a370c66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 02:11:31, skipping insertion in model container [2022-07-13 14:11:31,955 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 02:11:31" (3/3) ... [2022-07-13 14:11:31,956 INFO L111 eAbstractionObserver]: Analyzing ICFG filter2_set.c [2022-07-13 14:11:31,973 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 14:11:31,974 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-13 14:11:32,015 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 14:11:32,019 INFO L357 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, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@135754b6, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@7a271729 [2022-07-13 14:11:32,020 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-13 14:11:32,022 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 16 states have (on average 1.3125) internal successors, (21), 17 states have internal predecessors, (21), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-07-13 14:11:32,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-07-13 14:11:32,028 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 14:11:32,029 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 14:11:32,029 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 14:11:32,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 14:11:32,035 INFO L85 PathProgramCache]: Analyzing trace with hash 1697849372, now seen corresponding path program 1 times [2022-07-13 14:11:32,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-13 14:11:32,047 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [469006164] [2022-07-13 14:11:32,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 14:11:32,048 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-13 14:11:32,048 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-13 14:11:32,050 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) [2022-07-13 14:11:32,064 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-07-13 14:11:33,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 14:11:33,188 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 1 conjunts are in the unsatisfiable core [2022-07-13 14:11:33,193 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 14:11:33,225 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2022-07-13 14:11:33,225 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 14:11:33,226 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-13 14:11:33,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [469006164] [2022-07-13 14:11:33,226 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [469006164] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 14:11:33,227 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 14:11:33,227 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 14:11:33,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922038536] [2022-07-13 14:11:33,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 14:11:33,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-13 14:11:33,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-13 14:11:33,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-13 14:11:33,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-13 14:11:33,250 INFO L87 Difference]: Start difference. First operand has 27 states, 16 states have (on average 1.3125) internal successors, (21), 17 states have internal predecessors, (21), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 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 7.5) internal successors, (15), 2 states have internal predecessors, (15), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-13 14:11:33,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 14:11:33,263 INFO L93 Difference]: Finished difference Result 51 states and 78 transitions. [2022-07-13 14:11:33,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-13 14:11:33,264 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 48 [2022-07-13 14:11:33,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 14:11:33,269 INFO L225 Difference]: With dead ends: 51 [2022-07-13 14:11:33,269 INFO L226 Difference]: Without dead ends: 23 [2022-07-13 14:11:33,271 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-13 14:11:33,273 INFO L413 NwaCegarLoop]: 34 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, 34 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 [2022-07-13 14:11:33,274 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 14:11:33,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-07-13 14:11:33,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2022-07-13 14:11:33,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 13 states have (on average 1.0769230769230769) internal successors, (14), 13 states have internal predecessors, (14), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-07-13 14:11:33,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 30 transitions. [2022-07-13 14:11:33,305 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 30 transitions. Word has length 48 [2022-07-13 14:11:33,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 14:11:33,305 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 30 transitions. [2022-07-13 14:11:33,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-13 14:11:33,305 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 30 transitions. [2022-07-13 14:11:33,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-07-13 14:11:33,307 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 14:11:33,307 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 14:11:33,343 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2022-07-13 14:11:33,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-13 14:11:33,522 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 14:11:33,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 14:11:33,522 INFO L85 PathProgramCache]: Analyzing trace with hash -1417424168, now seen corresponding path program 1 times [2022-07-13 14:11:33,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-13 14:11:33,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1149527708] [2022-07-13 14:11:33,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 14:11:33,524 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-13 14:11:33,525 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-13 14:11:33,526 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) [2022-07-13 14:11:33,527 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-07-13 14:11:40,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 14:11:40,564 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 35 conjunts are in the unsatisfiable core [2022-07-13 14:11:40,568 INFO L286 TraceCheckSpWp]: Computing forward predicates...