./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-benchs/filter1.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/filter1.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 0f607249994cf0ffcacc9c07747c47cb351729bf7053d82a0bf430a6b6707eef --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 14:10:44,839 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 14:10:44,842 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 14:10:44,868 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 14:10:44,868 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 14:10:44,869 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 14:10:44,870 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 14:10:44,872 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 14:10:44,873 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 14:10:44,874 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 14:10:44,875 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 14:10:44,876 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 14:10:44,876 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 14:10:44,877 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 14:10:44,878 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 14:10:44,879 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 14:10:44,883 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 14:10:44,884 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 14:10:44,885 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 14:10:44,887 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 14:10:44,888 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 14:10:44,889 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 14:10:44,890 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 14:10:44,891 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 14:10:44,891 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 14:10:44,894 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 14:10:44,894 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 14:10:44,894 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 14:10:44,895 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 14:10:44,896 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 14:10:44,896 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 14:10:44,897 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 14:10:44,897 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 14:10:44,898 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 14:10:44,899 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 14:10:44,900 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 14:10:44,900 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 14:10:44,901 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 14:10:44,901 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 14:10:44,901 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 14:10:44,902 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 14:10:44,903 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 14:10:44,904 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-13 14:10:44,923 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 14:10:44,923 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 14:10:44,923 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 14:10:44,924 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 14:10:44,924 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 14:10:44,925 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 14:10:44,925 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 14:10:44,925 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 14:10:44,926 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 14:10:44,926 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 14:10:44,926 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 14:10:44,927 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 14:10:44,927 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 14:10:44,927 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 14:10:44,927 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 14:10:44,928 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 14:10:44,928 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 14:10:44,928 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 14:10:44,928 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 14:10:44,928 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 14:10:44,929 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 14:10:44,929 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 14:10:44,929 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 14:10:44,929 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 14:10:44,930 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 14:10:44,930 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 14:10:44,930 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 14:10:44,930 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 14:10:44,930 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 14:10:44,931 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 14:10:44,931 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 14:10:44,931 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 14:10:44,931 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 14:10:44,931 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0f607249994cf0ffcacc9c07747c47cb351729bf7053d82a0bf430a6b6707eef [2022-07-13 14:10:45,121 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 14:10:45,141 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 14:10:45,144 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 14:10:45,144 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 14:10:45,145 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 14:10:45,146 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/filter1.c [2022-07-13 14:10:45,228 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1d0f9ca1d/b8f12a7f963048d9b3f0cf5b0a770d24/FLAG1374067b6 [2022-07-13 14:10:45,617 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 14:10:45,618 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/filter1.c [2022-07-13 14:10:45,623 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1d0f9ca1d/b8f12a7f963048d9b3f0cf5b0a770d24/FLAG1374067b6 [2022-07-13 14:10:45,633 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1d0f9ca1d/b8f12a7f963048d9b3f0cf5b0a770d24 [2022-07-13 14:10:45,635 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 14:10:45,636 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 14:10:45,637 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 14:10:45,637 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 14:10:45,640 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 14:10:45,640 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 02:10:45" (1/1) ... [2022-07-13 14:10:45,641 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d799b1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:10:45, skipping insertion in model container [2022-07-13 14:10:45,641 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 02:10:45" (1/1) ... [2022-07-13 14:10:45,647 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 14:10:45,657 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 14:10:45,784 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/filter1.c[627,640] [2022-07-13 14:10:45,795 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 14:10:45,802 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 14:10:45,811 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/filter1.c[627,640] [2022-07-13 14:10:45,815 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 14:10:45,823 INFO L208 MainTranslator]: Completed translation [2022-07-13 14:10:45,824 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:10:45 WrapperNode [2022-07-13 14:10:45,824 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 14:10:45,825 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 14:10:45,825 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 14:10:45,825 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 14:10:45,830 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:10:45" (1/1) ... [2022-07-13 14:10:45,834 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:10:45" (1/1) ... [2022-07-13 14:10:45,846 INFO L137 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 46 [2022-07-13 14:10:45,846 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 14:10:45,847 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 14:10:45,847 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 14:10:45,847 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 14:10:45,852 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:10:45" (1/1) ... [2022-07-13 14:10:45,852 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:10:45" (1/1) ... [2022-07-13 14:10:45,853 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:10:45" (1/1) ... [2022-07-13 14:10:45,854 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:10:45" (1/1) ... [2022-07-13 14:10:45,856 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:10:45" (1/1) ... [2022-07-13 14:10:45,859 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:10:45" (1/1) ... [2022-07-13 14:10:45,859 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:10:45" (1/1) ... [2022-07-13 14:10:45,861 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 14:10:45,861 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 14:10:45,862 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 14:10:45,862 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 14:10:45,863 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:10:45" (1/1) ... [2022-07-13 14:10:45,868 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 14:10:45,875 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 14:10:45,884 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 14:10:45,886 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 14:10:45,910 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 14:10:45,910 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 14:10:45,910 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 14:10:45,911 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 14:10:45,952 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 14:10:45,953 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 14:10:46,076 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 14:10:46,082 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 14:10:46,082 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-13 14:10:46,083 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 02:10:46 BoogieIcfgContainer [2022-07-13 14:10:46,084 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 14:10:46,085 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 14:10:46,085 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 14:10:46,090 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 14:10:46,090 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 02:10:45" (1/3) ... [2022-07-13 14:10:46,091 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ba65399 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 02:10:46, skipping insertion in model container [2022-07-13 14:10:46,091 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:10:45" (2/3) ... [2022-07-13 14:10:46,092 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ba65399 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 02:10:46, skipping insertion in model container [2022-07-13 14:10:46,092 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 02:10:46" (3/3) ... [2022-07-13 14:10:46,093 INFO L111 eAbstractionObserver]: Analyzing ICFG filter1.c [2022-07-13 14:10:46,108 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 14:10:46,108 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-13 14:10:46,142 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 14:10:46,148 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@60b38204, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@23605a21 [2022-07-13 14:10:46,149 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-13 14:10:46,156 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 15 states have internal predecessors, (20), 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) [2022-07-13 14:10:46,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-07-13 14:10:46,161 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 14:10:46,161 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 14:10:46,162 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 14:10:46,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 14:10:46,166 INFO L85 PathProgramCache]: Analyzing trace with hash -332259343, now seen corresponding path program 1 times [2022-07-13 14:10:46,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 14:10:46,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717963843] [2022-07-13 14:10:46,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 14:10:46,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 14:10:46,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 14:10:46,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 14:10:46,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 14:10:46,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717963843] [2022-07-13 14:10:46,270 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717963843] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 14:10:46,270 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 14:10:46,270 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 14:10:46,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942546913] [2022-07-13 14:10:46,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 14:10:46,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-13 14:10:46,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 14:10:46,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-13 14:10:46,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-13 14:10:46,298 INFO L87 Difference]: Start difference. First operand has 16 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 15 states have internal predecessors, (20), 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) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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) [2022-07-13 14:10:46,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 14:10:46,309 INFO L93 Difference]: Finished difference Result 30 states and 38 transitions. [2022-07-13 14:10:46,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-13 14:10:46,311 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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 9 [2022-07-13 14:10:46,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 14:10:46,317 INFO L225 Difference]: With dead ends: 30 [2022-07-13 14:10:46,317 INFO L226 Difference]: Without dead ends: 12 [2022-07-13 14:10:46,319 INFO L412 NwaCegarLoop]: 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 [2022-07-13 14:10:46,322 INFO L413 NwaCegarLoop]: 17 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, 17 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 14:10:46,323 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 14:10:46,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2022-07-13 14:10:46,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2022-07-13 14:10:46,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 11 states have internal predecessors, (13), 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) [2022-07-13 14:10:46,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 13 transitions. [2022-07-13 14:10:46,346 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 13 transitions. Word has length 9 [2022-07-13 14:10:46,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 14:10:46,346 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 13 transitions. [2022-07-13 14:10:46,347 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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) [2022-07-13 14:10:46,347 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 13 transitions. [2022-07-13 14:10:46,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-07-13 14:10:46,347 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 14:10:46,347 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 14:10:46,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 14:10:46,348 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 14:10:46,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 14:10:46,349 INFO L85 PathProgramCache]: Analyzing trace with hash -275001041, now seen corresponding path program 1 times [2022-07-13 14:10:46,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 14:10:46,349 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139903304] [2022-07-13 14:10:46,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 14:10:46,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 14:10:46,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 14:10:46,366 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-13 14:10:46,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 14:10:46,391 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-13 14:10:46,391 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-13 14:10:46,395 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-07-13 14:10:46,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-13 14:10:46,400 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1] [2022-07-13 14:10:46,406 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-13 14:10:46,425 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.07 02:10:46 BoogieIcfgContainer [2022-07-13 14:10:46,425 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-13 14:10:46,425 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-13 14:10:46,426 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-13 14:10:46,426 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-13 14:10:46,426 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 02:10:46" (3/4) ... [2022-07-13 14:10:46,428 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-07-13 14:10:46,429 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-13 14:10:46,429 INFO L158 Benchmark]: Toolchain (without parser) took 793.27ms. Allocated memory was 94.4MB in the beginning and 113.2MB in the end (delta: 18.9MB). Free memory was 59.3MB in the beginning and 53.4MB in the end (delta: 6.0MB). Peak memory consumption was 22.2MB. Max. memory is 16.1GB. [2022-07-13 14:10:46,430 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 94.4MB. Free memory was 64.3MB in the beginning and 64.3MB in the end (delta: 27.4kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-13 14:10:46,430 INFO L158 Benchmark]: CACSL2BoogieTranslator took 187.25ms. Allocated memory was 94.4MB in the beginning and 113.2MB in the end (delta: 18.9MB). Free memory was 59.2MB in the beginning and 89.0MB in the end (delta: -29.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-13 14:10:46,431 INFO L158 Benchmark]: Boogie Procedure Inliner took 21.62ms. Allocated memory is still 113.2MB. Free memory was 89.0MB in the beginning and 87.9MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-13 14:10:46,431 INFO L158 Benchmark]: Boogie Preprocessor took 13.72ms. Allocated memory is still 113.2MB. Free memory was 87.9MB in the beginning and 86.8MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-13 14:10:46,432 INFO L158 Benchmark]: RCFGBuilder took 222.21ms. Allocated memory is still 113.2MB. Free memory was 86.8MB in the beginning and 77.4MB in the end (delta: 9.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-07-13 14:10:46,432 INFO L158 Benchmark]: TraceAbstraction took 339.90ms. Allocated memory is still 113.2MB. Free memory was 77.0MB in the beginning and 53.8MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2022-07-13 14:10:46,433 INFO L158 Benchmark]: Witness Printer took 3.27ms. Allocated memory is still 113.2MB. Free memory was 53.8MB in the beginning and 53.4MB in the end (delta: 479.2kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-13 14:10:46,435 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 94.4MB. Free memory was 64.3MB in the beginning and 64.3MB in the end (delta: 27.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 187.25ms. Allocated memory was 94.4MB in the beginning and 113.2MB in the end (delta: 18.9MB). Free memory was 59.2MB in the beginning and 89.0MB in the end (delta: -29.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 21.62ms. Allocated memory is still 113.2MB. Free memory was 89.0MB in the beginning and 87.9MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 13.72ms. Allocated memory is still 113.2MB. Free memory was 87.9MB in the beginning and 86.8MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 222.21ms. Allocated memory is still 113.2MB. Free memory was 86.8MB in the beginning and 77.4MB in the end (delta: 9.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 339.90ms. Allocated memory is still 113.2MB. Free memory was 77.0MB in the beginning and 53.8MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * Witness Printer took 3.27ms. Allocated memory is still 113.2MB. Free memory was 53.8MB in the beginning and 53.4MB in the end (delta: 479.2kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 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 41, overapproximation of to_real at line 34. Possible FailurePath: [L22] double E0, E1, S; [L23] int i; [L25] E1 = 0 [L26] S = 0 [L28] i = 0 VAL [i=0] [L28] COND TRUE i <= 1000000 [L30] E0 = __VERIFIER_nondet_double() [L31] CALL assume_abort_if_not(E0 >= -1. && E0 <= 1.) [L15] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L31] RET assume_abort_if_not(E0 >= -1. && E0 <= 1.) [L33] COND TRUE __VERIFIER_nondet_int() [L34] S = 0 VAL [E0=49, i=0] [L39] E1 = E0 [L41] CALL __VERIFIER_assert(S >= -10000. && S <= 10000.) [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 1 procedures, 16 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 17 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, 17 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=16occurred 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, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 8 ConstructedInterpolants, 0 QuantifiedInterpolants, 8 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 [2022-07-13 14:10:46,467 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/filter1.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 0f607249994cf0ffcacc9c07747c47cb351729bf7053d82a0bf430a6b6707eef --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 14:10:48,323 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 14:10:48,325 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 14:10:48,356 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 14:10:48,357 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 14:10:48,358 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 14:10:48,361 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 14:10:48,365 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 14:10:48,366 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 14:10:48,370 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 14:10:48,371 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 14:10:48,373 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 14:10:48,373 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 14:10:48,375 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 14:10:48,376 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 14:10:48,382 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 14:10:48,382 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 14:10:48,384 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 14:10:48,385 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 14:10:48,392 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 14:10:48,393 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 14:10:48,394 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 14:10:48,395 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 14:10:48,396 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 14:10:48,398 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 14:10:48,401 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 14:10:48,401 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 14:10:48,402 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 14:10:48,403 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 14:10:48,403 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 14:10:48,404 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 14:10:48,404 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 14:10:48,405 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 14:10:48,406 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 14:10:48,407 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 14:10:48,408 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 14:10:48,408 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 14:10:48,409 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 14:10:48,409 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 14:10:48,409 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 14:10:48,410 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 14:10:48,411 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 14:10:48,415 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-07-13 14:10:48,459 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 14:10:48,459 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 14:10:48,460 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 14:10:48,460 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 14:10:48,460 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 14:10:48,461 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 14:10:48,461 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 14:10:48,461 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 14:10:48,462 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 14:10:48,462 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 14:10:48,463 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 14:10:48,463 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 14:10:48,463 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 14:10:48,463 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 14:10:48,463 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 14:10:48,464 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 14:10:48,464 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-13 14:10:48,464 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-07-13 14:10:48,464 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-07-13 14:10:48,464 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 14:10:48,465 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 14:10:48,465 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 14:10:48,465 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 14:10:48,465 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 14:10:48,465 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 14:10:48,466 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 14:10:48,466 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 14:10:48,466 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 14:10:48,466 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 14:10:48,466 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 14:10:48,467 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-07-13 14:10:48,467 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-07-13 14:10:48,467 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 14:10:48,467 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 14:10:48,468 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 14:10:48,468 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-07-13 14:10:48,468 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0f607249994cf0ffcacc9c07747c47cb351729bf7053d82a0bf430a6b6707eef [2022-07-13 14:10:48,730 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 14:10:48,752 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 14:10:48,754 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 14:10:48,756 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 14:10:48,756 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 14:10:48,757 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/filter1.c [2022-07-13 14:10:48,812 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9c7771bed/6a690edf1aab4380925a0cd05ae78ace/FLAG5413b8f1a [2022-07-13 14:10:49,184 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 14:10:49,185 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/filter1.c [2022-07-13 14:10:49,191 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9c7771bed/6a690edf1aab4380925a0cd05ae78ace/FLAG5413b8f1a [2022-07-13 14:10:49,607 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9c7771bed/6a690edf1aab4380925a0cd05ae78ace [2022-07-13 14:10:49,609 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 14:10:49,611 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 14:10:49,614 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 14:10:49,614 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 14:10:49,617 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 14:10:49,618 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 02:10:49" (1/1) ... [2022-07-13 14:10:49,619 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4eb97c79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:10:49, skipping insertion in model container [2022-07-13 14:10:49,619 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 02:10:49" (1/1) ... [2022-07-13 14:10:49,625 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 14:10:49,641 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 14:10:49,760 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/filter1.c[627,640] [2022-07-13 14:10:49,774 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 14:10:49,792 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 14:10:49,805 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/filter1.c[627,640] [2022-07-13 14:10:49,813 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 14:10:49,869 INFO L208 MainTranslator]: Completed translation [2022-07-13 14:10:49,869 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:10:49 WrapperNode [2022-07-13 14:10:49,870 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 14:10:49,871 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 14:10:49,871 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 14:10:49,871 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 14:10:49,876 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:10:49" (1/1) ... [2022-07-13 14:10:49,884 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:10:49" (1/1) ... [2022-07-13 14:10:49,900 INFO L137 Inliner]: procedures = 16, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 46 [2022-07-13 14:10:49,900 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 14:10:49,902 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 14:10:49,902 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 14:10:49,903 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 14:10:49,909 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:10:49" (1/1) ... [2022-07-13 14:10:49,909 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:10:49" (1/1) ... [2022-07-13 14:10:49,923 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:10:49" (1/1) ... [2022-07-13 14:10:49,924 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:10:49" (1/1) ... [2022-07-13 14:10:49,928 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:10:49" (1/1) ... [2022-07-13 14:10:49,933 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:10:49" (1/1) ... [2022-07-13 14:10:49,942 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:10:49" (1/1) ... [2022-07-13 14:10:49,947 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 14:10:49,948 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 14:10:49,949 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 14:10:49,949 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 14:10:49,950 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:10:49" (1/1) ... [2022-07-13 14:10:49,956 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 14:10:49,964 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 14:10:49,976 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 14:10:49,991 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 14:10:50,017 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 14:10:50,018 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-07-13 14:10:50,018 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 14:10:50,018 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 14:10:50,079 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 14:10:50,080 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 14:10:52,268 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 14:10:52,285 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 14:10:52,285 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-13 14:10:52,287 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 02:10:52 BoogieIcfgContainer [2022-07-13 14:10:52,287 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 14:10:52,288 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 14:10:52,289 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 14:10:52,297 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 14:10:52,299 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 02:10:49" (1/3) ... [2022-07-13 14:10:52,300 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14fb8854 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 02:10:52, skipping insertion in model container [2022-07-13 14:10:52,300 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 02:10:49" (2/3) ... [2022-07-13 14:10:52,300 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14fb8854 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 02:10:52, skipping insertion in model container [2022-07-13 14:10:52,300 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 02:10:52" (3/3) ... [2022-07-13 14:10:52,302 INFO L111 eAbstractionObserver]: Analyzing ICFG filter1.c [2022-07-13 14:10:52,324 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 14:10:52,324 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-13 14:10:52,377 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 14:10:52,385 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@56c4e6f4, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@4bd790ee [2022-07-13 14:10:52,386 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-13 14:10:52,392 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 15 states have internal predecessors, (20), 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) [2022-07-13 14:10:52,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-07-13 14:10:52,398 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 14:10:52,398 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 14:10:52,399 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 14:10:52,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 14:10:52,411 INFO L85 PathProgramCache]: Analyzing trace with hash -332259343, now seen corresponding path program 1 times [2022-07-13 14:10:52,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-13 14:10:52,422 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [695924463] [2022-07-13 14:10:52,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 14:10:52,423 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-13 14:10:52,423 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-13 14:10:52,429 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 14:10:52,431 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 14:10:52,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 14:10:52,509 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 1 conjunts are in the unsatisfiable core [2022-07-13 14:10:52,513 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 14:10:52,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 14:10:52,530 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 14:10:52,531 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-13 14:10:52,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [695924463] [2022-07-13 14:10:52,532 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [695924463] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 14:10:52,532 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 14:10:52,532 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 14:10:52,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958450518] [2022-07-13 14:10:52,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 14:10:52,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-13 14:10:52,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-13 14:10:52,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-13 14:10:52,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-13 14:10:52,576 INFO L87 Difference]: Start difference. First operand has 16 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 15 states have internal predecessors, (20), 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) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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) [2022-07-13 14:10:52,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 14:10:52,589 INFO L93 Difference]: Finished difference Result 30 states and 38 transitions. [2022-07-13 14:10:52,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-13 14:10:52,591 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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 9 [2022-07-13 14:10:52,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 14:10:52,603 INFO L225 Difference]: With dead ends: 30 [2022-07-13 14:10:52,603 INFO L226 Difference]: Without dead ends: 12 [2022-07-13 14:10:52,606 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 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 14:10:52,611 INFO L413 NwaCegarLoop]: 17 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, 17 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 14:10:52,612 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 14:10:52,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2022-07-13 14:10:52,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2022-07-13 14:10:52,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 11 states have internal predecessors, (13), 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) [2022-07-13 14:10:52,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 13 transitions. [2022-07-13 14:10:52,638 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 13 transitions. Word has length 9 [2022-07-13 14:10:52,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 14:10:52,638 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 13 transitions. [2022-07-13 14:10:52,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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) [2022-07-13 14:10:52,639 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 13 transitions. [2022-07-13 14:10:52,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-07-13 14:10:52,639 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 14:10:52,640 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 14:10:52,660 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-07-13 14:10:52,860 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 14:10:52,861 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 14:10:52,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 14:10:52,862 INFO L85 PathProgramCache]: Analyzing trace with hash -275001041, now seen corresponding path program 1 times [2022-07-13 14:10:52,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-13 14:10:52,863 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [936447161] [2022-07-13 14:10:52,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 14:10:52,863 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-13 14:10:52,863 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-13 14:10:52,865 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 14:10:52,867 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 14:10:52,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 14:10:52,899 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-13 14:10:52,900 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 14:10:53,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 14:10:53,037 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 14:10:53,037 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-13 14:10:53,037 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [936447161] [2022-07-13 14:10:53,037 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [936447161] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 14:10:53,038 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 14:10:53,038 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 14:10:53,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221778416] [2022-07-13 14:10:53,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 14:10:53,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 14:10:53,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-13 14:10:53,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 14:10:53,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 14:10:53,040 INFO L87 Difference]: Start difference. First operand 12 states and 13 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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) [2022-07-13 14:10:54,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 14:10:54,518 INFO L93 Difference]: Finished difference Result 28 states and 31 transitions. [2022-07-13 14:10:54,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 14:10:54,519 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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 9 [2022-07-13 14:10:54,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 14:10:54,520 INFO L225 Difference]: With dead ends: 28 [2022-07-13 14:10:54,520 INFO L226 Difference]: Without dead ends: 26 [2022-07-13 14:10:54,521 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 14:10:54,522 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 13 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-13 14:10:54,522 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 24 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-13 14:10:54,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-07-13 14:10:54,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 14. [2022-07-13 14:10:54,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 13 states have internal predecessors, (15), 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) [2022-07-13 14:10:54,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2022-07-13 14:10:54,526 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 9 [2022-07-13 14:10:54,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 14:10:54,527 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2022-07-13 14:10:54,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 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) [2022-07-13 14:10:54,527 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2022-07-13 14:10:54,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-07-13 14:10:54,527 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 14:10:54,528 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 14:10:54,542 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-07-13 14:10:54,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-13 14:10:54,740 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 14:10:54,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 14:10:54,740 INFO L85 PathProgramCache]: Analyzing trace with hash -274941459, now seen corresponding path program 1 times [2022-07-13 14:10:54,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-13 14:10:54,741 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1527892584] [2022-07-13 14:10:54,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 14:10:54,741 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-13 14:10:54,741 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-13 14:10:54,743 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-13 14:10:54,746 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-07-13 14:10:55,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 14:10:55,067 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-13 14:10:55,068 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 14:10:55,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 14:10:55,823 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 14:10:55,823 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-13 14:10:55,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1527892584] [2022-07-13 14:10:55,824 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1527892584] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 14:10:55,824 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 14:10:55,824 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 14:10:55,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740175652] [2022-07-13 14:10:55,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 14:10:55,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-13 14:10:55,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-13 14:10:55,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-13 14:10:55,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-13 14:10:55,825 INFO L87 Difference]: Start difference. First operand 14 states and 15 transitions. Second operand has 8 states, 8 states have (on average 1.125) internal successors, (9), 7 states have internal predecessors, (9), 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) [2022-07-13 14:10:58,633 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-13 14:11:00,825 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-13 14:11:00,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 14:11:00,884 INFO L93 Difference]: Finished difference Result 43 states and 47 transitions. [2022-07-13 14:11:00,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 14:11:00,884 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.125) internal successors, (9), 7 states have internal predecessors, (9), 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 9 [2022-07-13 14:11:00,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 14:11:00,885 INFO L225 Difference]: With dead ends: 43 [2022-07-13 14:11:00,885 INFO L226 Difference]: Without dead ends: 41 [2022-07-13 14:11:00,886 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-07-13 14:11:00,886 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 35 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 6 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 17 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2022-07-13 14:11:00,887 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 32 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 37 Invalid, 2 Unknown, 17 Unchecked, 4.7s Time] [2022-07-13 14:11:00,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2022-07-13 14:11:00,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 18. [2022-07-13 14:11:00,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 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) [2022-07-13 14:11:00,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2022-07-13 14:11:00,890 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 9 [2022-07-13 14:11:00,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 14:11:00,890 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2022-07-13 14:11:00,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.125) internal successors, (9), 7 states have internal predecessors, (9), 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) [2022-07-13 14:11:00,890 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2022-07-13 14:11:00,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-07-13 14:11:00,890 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 14:11:00,891 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 14:11:00,909 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-07-13 14:11:01,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-13 14:11:01,092 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 14:11:01,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 14:11:01,092 INFO L85 PathProgramCache]: Analyzing trace with hash -1443795685, now seen corresponding path program 1 times [2022-07-13 14:11:01,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-13 14:11:01,093 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1883515920] [2022-07-13 14:11:01,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 14:11:01,093 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-13 14:11:01,093 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-13 14:11:01,094 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-13 14:11:01,102 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-07-13 14:11:01,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 14:11:01,437 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 13 conjunts are in the unsatisfiable core [2022-07-13 14:11:01,438 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 14:11:29,022 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 14:11:29,022 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 14:11:40,801 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse0 (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 999.0 1000.0)) |c_ULTIMATE.start_main_~S~0#1|) |c_ULTIMATE.start_main_~E0~0#1|) |c_ULTIMATE.start_main_~E1~0#1|)) (.cse1 ((_ to_fp 11 53) c_currentRoundingMode 10000.0))) (and (fp.geq .cse0 (fp.neg .cse1)) (fp.leq .cse0 .cse1))) is different from false [2022-07-13 14:11:42,850 WARN L855 $PredicateComparison]: unable to prove that (let ((.cse0 (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 999.0 1000.0)) |c_ULTIMATE.start_main_~S~0#1|) |c_ULTIMATE.start_main_~E0~0#1|) |c_ULTIMATE.start_main_~E1~0#1|)) (.cse1 ((_ to_fp 11 53) c_currentRoundingMode 10000.0))) (and (fp.geq .cse0 (fp.neg .cse1)) (fp.leq .cse0 .cse1))) is different from true [2022-07-13 14:12:05,623 WARN L833 $PredicateComparison]: unable to prove that (or (let ((.cse0 (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 999.0 1000.0)) |c_ULTIMATE.start_main_~S~0#1|) |c_ULTIMATE.start_main_~E0~0#1|) |c_ULTIMATE.start_main_~E1~0#1|)) (.cse1 ((_ to_fp 11 53) c_currentRoundingMode 10000.0))) (and (fp.geq .cse0 (fp.neg .cse1)) (fp.leq .cse0 .cse1))) (= |c_ULTIMATE.start_assume_abort_if_not_~cond#1| (_ bv0 32))) is different from false [2022-07-13 14:12:07,671 WARN L855 $PredicateComparison]: unable to prove that (or (let ((.cse0 (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 999.0 1000.0)) |c_ULTIMATE.start_main_~S~0#1|) |c_ULTIMATE.start_main_~E0~0#1|) |c_ULTIMATE.start_main_~E1~0#1|)) (.cse1 ((_ to_fp 11 53) c_currentRoundingMode 10000.0))) (and (fp.geq .cse0 (fp.neg .cse1)) (fp.leq .cse0 .cse1))) (= |c_ULTIMATE.start_assume_abort_if_not_~cond#1| (_ bv0 32))) is different from true [2022-07-13 14:12:51,128 WARN L855 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~E0~0#1_6| (_ FloatingPoint 11 53))) (let ((.cse2 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (or (let ((.cse0 (fp.sub c_currentRoundingMode (fp.add c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 999.0 1000.0)) |c_ULTIMATE.start_main_~S~0#1|) |v_ULTIMATE.start_main_~E0~0#1_6|) |c_ULTIMATE.start_main_~E1~0#1|)) (.cse1 ((_ to_fp 11 53) c_currentRoundingMode 10000.0))) (and (fp.leq .cse0 .cse1) (fp.geq .cse0 (fp.neg .cse1)))) (not (fp.leq |v_ULTIMATE.start_main_~E0~0#1_6| .cse2)) (not (fp.geq |v_ULTIMATE.start_main_~E0~0#1_6| (fp.neg .cse2)))))) is different from true