./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-benchs/bary_diverge.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ff03de63 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/bary_diverge.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 b9d207296596aa3375527680ff88bb2bc1830663ee47f0fb08df7239383517f9 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ff03de6 [2021-12-21 11:47:11,838 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-21 11:47:11,840 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-21 11:47:11,884 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-21 11:47:11,884 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-21 11:47:11,885 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-21 11:47:11,886 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-21 11:47:11,887 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-21 11:47:11,888 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-21 11:47:11,888 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-21 11:47:11,889 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-21 11:47:11,890 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-21 11:47:11,890 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-21 11:47:11,891 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-21 11:47:11,891 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-21 11:47:11,892 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-21 11:47:11,893 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-21 11:47:11,893 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-21 11:47:11,900 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-21 11:47:11,902 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-21 11:47:11,903 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-21 11:47:11,903 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-21 11:47:11,904 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-21 11:47:11,905 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-21 11:47:11,906 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-21 11:47:11,906 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-21 11:47:11,907 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-21 11:47:11,907 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-21 11:47:11,908 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-21 11:47:11,908 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-21 11:47:11,908 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-21 11:47:11,909 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-21 11:47:11,909 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-21 11:47:11,910 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-21 11:47:11,911 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-21 11:47:11,911 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-21 11:47:11,911 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-21 11:47:11,912 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-21 11:47:11,912 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-21 11:47:11,912 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-21 11:47:11,913 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-21 11:47:11,913 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-21 11:47:11,934 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-21 11:47:11,939 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-21 11:47:11,940 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-21 11:47:11,940 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-21 11:47:11,941 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-21 11:47:11,941 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-21 11:47:11,942 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-21 11:47:11,942 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-21 11:47:11,942 INFO L138 SettingsManager]: * Use SBE=true [2021-12-21 11:47:11,942 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-21 11:47:11,943 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-21 11:47:11,943 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-21 11:47:11,943 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-21 11:47:11,943 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-21 11:47:11,944 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-21 11:47:11,944 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-21 11:47:11,944 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-21 11:47:11,944 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-21 11:47:11,944 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-21 11:47:11,944 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-21 11:47:11,944 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-21 11:47:11,945 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-21 11:47:11,945 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-21 11:47:11,945 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-21 11:47:11,945 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 11:47:11,945 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-21 11:47:11,945 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-21 11:47:11,946 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-21 11:47:11,946 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-21 11:47:11,947 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-21 11:47:11,947 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-21 11:47:11,947 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-21 11:47:11,947 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-21 11:47:11,947 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-21 11:47:11,947 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b9d207296596aa3375527680ff88bb2bc1830663ee47f0fb08df7239383517f9 [2021-12-21 11:47:12,114 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-21 11:47:12,131 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-21 11:47:12,133 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-21 11:47:12,134 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-21 11:47:12,136 INFO L275 PluginConnector]: CDTParser initialized [2021-12-21 11:47:12,136 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/bary_diverge.c [2021-12-21 11:47:12,180 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7bb3f7489/fb801389b736447c987cc0758892ca62/FLAG607889a55 [2021-12-21 11:47:12,518 INFO L306 CDTParser]: Found 1 translation units. [2021-12-21 11:47:12,519 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/bary_diverge.c [2021-12-21 11:47:12,523 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7bb3f7489/fb801389b736447c987cc0758892ca62/FLAG607889a55 [2021-12-21 11:47:12,956 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7bb3f7489/fb801389b736447c987cc0758892ca62 [2021-12-21 11:47:12,958 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-21 11:47:12,959 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-21 11:47:12,960 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-21 11:47:12,960 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-21 11:47:12,963 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-21 11:47:12,963 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 11:47:12" (1/1) ... [2021-12-21 11:47:12,964 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@255360b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:47:12, skipping insertion in model container [2021-12-21 11:47:12,964 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 11:47:12" (1/1) ... [2021-12-21 11:47:12,968 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-21 11:47:12,976 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-21 11:47:13,129 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/bary_diverge.c[632,645] [2021-12-21 11:47:13,145 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 11:47:13,151 INFO L203 MainTranslator]: Completed pre-run [2021-12-21 11:47:13,158 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/bary_diverge.c[632,645] [2021-12-21 11:47:13,162 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 11:47:13,170 INFO L208 MainTranslator]: Completed translation [2021-12-21 11:47:13,172 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:47:13 WrapperNode [2021-12-21 11:47:13,173 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-21 11:47:13,173 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-21 11:47:13,174 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-21 11:47:13,174 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-21 11:47:13,179 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:47:13" (1/1) ... [2021-12-21 11:47:13,184 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:47:13" (1/1) ... [2021-12-21 11:47:13,195 INFO L137 Inliner]: procedures = 17, calls = 16, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 69 [2021-12-21 11:47:13,195 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-21 11:47:13,196 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-21 11:47:13,196 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-21 11:47:13,196 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-21 11:47:13,201 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:47:13" (1/1) ... [2021-12-21 11:47:13,201 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:47:13" (1/1) ... [2021-12-21 11:47:13,202 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:47:13" (1/1) ... [2021-12-21 11:47:13,203 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:47:13" (1/1) ... [2021-12-21 11:47:13,205 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:47:13" (1/1) ... [2021-12-21 11:47:13,207 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:47:13" (1/1) ... [2021-12-21 11:47:13,208 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:47:13" (1/1) ... [2021-12-21 11:47:13,209 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-21 11:47:13,210 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-21 11:47:13,210 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-21 11:47:13,210 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-21 11:47:13,211 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:47:13" (1/1) ... [2021-12-21 11:47:13,215 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 11:47:13,222 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 11:47:13,232 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-21 11:47:13,234 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-21 11:47:13,256 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-21 11:47:13,256 INFO L130 BoogieDeclarations]: Found specification of procedure RANDOM_INPUT [2021-12-21 11:47:13,256 INFO L138 BoogieDeclarations]: Found implementation of procedure RANDOM_INPUT [2021-12-21 11:47:13,256 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-21 11:47:13,256 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-21 11:47:13,257 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-21 11:47:13,300 INFO L234 CfgBuilder]: Building ICFG [2021-12-21 11:47:13,301 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-21 11:47:13,399 INFO L275 CfgBuilder]: Performing block encoding [2021-12-21 11:47:13,406 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-21 11:47:13,406 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-21 11:47:13,409 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 11:47:13 BoogieIcfgContainer [2021-12-21 11:47:13,409 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-21 11:47:13,411 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-21 11:47:13,411 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-21 11:47:13,413 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-21 11:47:13,413 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 11:47:12" (1/3) ... [2021-12-21 11:47:13,414 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b47afde and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 11:47:13, skipping insertion in model container [2021-12-21 11:47:13,414 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:47:13" (2/3) ... [2021-12-21 11:47:13,414 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b47afde and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 11:47:13, skipping insertion in model container [2021-12-21 11:47:13,414 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 11:47:13" (3/3) ... [2021-12-21 11:47:13,415 INFO L111 eAbstractionObserver]: Analyzing ICFG bary_diverge.c [2021-12-21 11:47:13,418 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-21 11:47:13,418 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-21 11:47:13,447 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-21 11:47:13,451 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-21 11:47:13,453 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-21 11:47:13,463 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 24 states have (on average 1.2916666666666667) internal successors, (31), 25 states have internal predecessors, (31), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-12-21 11:47:13,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-12-21 11:47:13,466 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 11:47:13,466 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 11:47:13,467 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 11:47:13,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 11:47:13,470 INFO L85 PathProgramCache]: Analyzing trace with hash 372835822, now seen corresponding path program 1 times [2021-12-21 11:47:13,476 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 11:47:13,477 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097448311] [2021-12-21 11:47:13,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 11:47:13,477 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 11:47:13,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 11:47:13,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 11:47:13,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 11:47:13,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-21 11:47:13,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 11:47:13,610 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-12-21 11:47:13,610 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 11:47:13,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097448311] [2021-12-21 11:47:13,611 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097448311] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 11:47:13,611 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 11:47:13,611 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-21 11:47:13,612 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160884661] [2021-12-21 11:47:13,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 11:47:13,616 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-21 11:47:13,616 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 11:47:13,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-21 11:47:13,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-21 11:47:13,643 INFO L87 Difference]: Start difference. First operand has 32 states, 24 states have (on average 1.2916666666666667) internal successors, (31), 25 states have internal predecessors, (31), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-21 11:47:13,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 11:47:13,662 INFO L93 Difference]: Finished difference Result 61 states and 83 transitions. [2021-12-21 11:47:13,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-21 11:47:13,664 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 22 [2021-12-21 11:47:13,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 11:47:13,668 INFO L225 Difference]: With dead ends: 61 [2021-12-21 11:47:13,669 INFO L226 Difference]: Without dead ends: 28 [2021-12-21 11:47:13,674 INFO L932 BasicCegarLoop]: 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 [2021-12-21 11:47:13,678 INFO L933 BasicCegarLoop]: 38 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, 38 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 11:47:13,679 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 11:47:13,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-12-21 11:47:13,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2021-12-21 11:47:13,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 21 states have (on average 1.1428571428571428) internal successors, (24), 21 states have internal predecessors, (24), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-12-21 11:47:13,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 34 transitions. [2021-12-21 11:47:13,711 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 34 transitions. Word has length 22 [2021-12-21 11:47:13,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 11:47:13,711 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 34 transitions. [2021-12-21 11:47:13,712 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-21 11:47:13,712 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 34 transitions. [2021-12-21 11:47:13,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-12-21 11:47:13,714 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 11:47:13,714 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 11:47:13,715 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-21 11:47:13,715 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 11:47:13,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 11:47:13,722 INFO L85 PathProgramCache]: Analyzing trace with hash -920244306, now seen corresponding path program 1 times [2021-12-21 11:47:13,722 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 11:47:13,723 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937679402] [2021-12-21 11:47:13,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 11:47:13,723 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 11:47:13,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 11:47:13,774 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-21 11:47:13,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 11:47:13,813 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-21 11:47:13,813 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-21 11:47:13,816 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-21 11:47:13,818 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-21 11:47:13,822 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-12-21 11:47:13,824 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-21 11:47:13,860 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.12 11:47:13 BoogieIcfgContainer [2021-12-21 11:47:13,860 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-21 11:47:13,861 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-21 11:47:13,861 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-21 11:47:13,861 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-21 11:47:13,875 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 11:47:13" (3/4) ... [2021-12-21 11:47:13,877 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-12-21 11:47:13,877 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-21 11:47:13,878 INFO L158 Benchmark]: Toolchain (without parser) took 918.74ms. Allocated memory was 92.3MB in the beginning and 111.1MB in the end (delta: 18.9MB). Free memory was 61.8MB in the beginning and 82.5MB in the end (delta: -20.7MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-21 11:47:13,879 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 92.3MB. Free memory is still 49.3MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-21 11:47:13,880 INFO L158 Benchmark]: CACSL2BoogieTranslator took 212.54ms. Allocated memory is still 92.3MB. Free memory was 61.6MB in the beginning and 68.6MB in the end (delta: -7.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-21 11:47:13,881 INFO L158 Benchmark]: Boogie Procedure Inliner took 22.11ms. Allocated memory is still 92.3MB. Free memory was 68.6MB in the beginning and 67.1MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-21 11:47:13,882 INFO L158 Benchmark]: Boogie Preprocessor took 13.24ms. Allocated memory is still 92.3MB. Free memory was 67.1MB in the beginning and 65.9MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-21 11:47:13,884 INFO L158 Benchmark]: RCFGBuilder took 199.24ms. Allocated memory is still 92.3MB. Free memory was 65.9MB in the beginning and 56.2MB in the end (delta: 9.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-21 11:47:13,885 INFO L158 Benchmark]: TraceAbstraction took 449.50ms. Allocated memory was 92.3MB in the beginning and 111.1MB in the end (delta: 18.9MB). Free memory was 55.8MB in the beginning and 83.0MB in the end (delta: -27.2MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-21 11:47:13,885 INFO L158 Benchmark]: Witness Printer took 16.70ms. Allocated memory is still 111.1MB. Free memory is still 82.5MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-21 11:47:13,890 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 92.3MB. Free memory is still 49.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 212.54ms. Allocated memory is still 92.3MB. Free memory was 61.6MB in the beginning and 68.6MB in the end (delta: -7.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 22.11ms. Allocated memory is still 92.3MB. Free memory was 68.6MB in the beginning and 67.1MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 13.24ms. Allocated memory is still 92.3MB. Free memory was 67.1MB in the beginning and 65.9MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 199.24ms. Allocated memory is still 92.3MB. Free memory was 65.9MB in the beginning and 56.2MB in the end (delta: 9.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 449.50ms. Allocated memory was 92.3MB in the beginning and 111.1MB in the end (delta: 18.9MB). Free memory was 55.8MB in the beginning and 83.0MB in the end (delta: -27.2MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 16.70ms. Allocated memory is still 111.1MB. Free memory is still 82.5MB. 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: 14]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 50. Possible FailurePath: [L19] BOOLEAN INIT; [L20] float C1, I; [L34] static float X,Y,Z; VAL [C1=0, I=0, INIT=0, X=0, Y=0, Z=0] [L55] int i; [L57] INIT = TRUE VAL [C1=0, I=0, INIT=1, X=0, Y=0, Z=0] [L58] CALL, EXPR RANDOM_INPUT() VAL [C1=0, I=0, INIT=1, X=0, Y=0, Z=0] [L24] float x; [L25] x = __VERIFIER_nondet_float() [L26] CALL assume_abort_if_not(x >= -1.f && x <= 1.f) [L12] COND FALSE !(!cond) VAL [\old(cond)=1, C1=0, cond=1, I=0, INIT=1, X=0, Y=0, Z=0] [L26] RET assume_abort_if_not(x >= -1.f && x <= 1.f) [L27] return x; VAL [\result=50, C1=0, I=0, INIT=1, X=0, x=50, Y=0, Z=0] [L58] RET, EXPR RANDOM_INPUT() VAL [C1=0, I=0, INIT=1, RANDOM_INPUT()=50, X=0, Y=0, Z=0] [L58] C1 = RANDOM_INPUT() [L59] CALL, EXPR RANDOM_INPUT() VAL [C1=50, I=0, INIT=1, X=0, Y=0, Z=0] [L24] float x; [L25] x = __VERIFIER_nondet_float() [L26] CALL assume_abort_if_not(x >= -1.f && x <= 1.f) [L12] COND FALSE !(!cond) VAL [\old(cond)=1, C1=50, cond=1, I=0, INIT=1, X=0, Y=0, Z=0] [L26] RET assume_abort_if_not(x >= -1.f && x <= 1.f) [L27] return x; VAL [\result=49, C1=50, I=0, INIT=1, x=49, X=0, Y=0, Z=0] [L59] RET, EXPR RANDOM_INPUT() VAL [C1=50, I=0, INIT=1, RANDOM_INPUT()=49, X=0, Y=0, Z=0] [L59] I = RANDOM_INPUT() [L61] i = 0 VAL [C1=50, i=0, I=49, INIT=1, X=0, Y=0, Z=0] [L61] COND TRUE i < 3600000 [L62] CALL bary() [L36] COND TRUE C1 > 0.f [L37] Z = Y [L38] Y = X VAL [C1=50, I=49, INIT=1, X=0, Y=0, Z=0] [L41] COND TRUE INIT == TRUE [L42] X = I [L43] Y = I [L44] Z = I VAL [C1=50, I=49, INIT=1, X=49, Y=49, Z=49] [L50] CALL __VERIFIER_assert(X >= -5.f && X <= 5.f) [L14] COND TRUE !(cond) VAL [\old(cond)=0, C1=50, cond=0, I=49, INIT=1, X=49, Y=49, Z=49] [L14] reach_error() VAL [\old(cond)=0, C1=50, cond=0, I=49, INIT=1, X=49, Y=49, Z=49] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 32 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.4s, OverallIterations: 2, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 38 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, 38 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred 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, 0.1s InterpolantComputationTime, 44 NumberOfCodeBlocks, 44 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 21 ConstructedInterpolants, 0 QuantifiedInterpolants, 21 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 5/5 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-12-21 11:47:13,920 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/bary_diverge.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 b9d207296596aa3375527680ff88bb2bc1830663ee47f0fb08df7239383517f9 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ff03de6 [2021-12-21 11:47:15,486 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-21 11:47:15,488 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-21 11:47:15,518 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-21 11:47:15,518 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-21 11:47:15,521 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-21 11:47:15,522 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-21 11:47:15,525 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-21 11:47:15,527 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-21 11:47:15,530 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-21 11:47:15,531 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-21 11:47:15,536 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-21 11:47:15,537 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-21 11:47:15,539 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-21 11:47:15,540 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-21 11:47:15,544 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-21 11:47:15,544 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-21 11:47:15,545 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-21 11:47:15,547 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-21 11:47:15,551 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-21 11:47:15,552 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-21 11:47:15,552 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-21 11:47:15,553 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-21 11:47:15,554 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-21 11:47:15,559 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-21 11:47:15,559 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-21 11:47:15,560 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-21 11:47:15,561 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-21 11:47:15,561 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-21 11:47:15,562 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-21 11:47:15,562 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-21 11:47:15,562 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-21 11:47:15,564 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-21 11:47:15,564 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-21 11:47:15,565 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-21 11:47:15,565 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-21 11:47:15,566 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-21 11:47:15,566 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-21 11:47:15,566 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-21 11:47:15,567 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-21 11:47:15,568 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-21 11:47:15,571 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-12-21 11:47:15,600 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-21 11:47:15,600 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-21 11:47:15,601 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-21 11:47:15,601 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-21 11:47:15,601 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-21 11:47:15,602 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-21 11:47:15,602 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-21 11:47:15,603 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-21 11:47:15,603 INFO L138 SettingsManager]: * Use SBE=true [2021-12-21 11:47:15,603 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-21 11:47:15,604 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-21 11:47:15,604 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-21 11:47:15,604 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-21 11:47:15,604 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-21 11:47:15,605 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-21 11:47:15,605 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-21 11:47:15,605 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-21 11:47:15,605 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-21 11:47:15,605 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-21 11:47:15,605 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-21 11:47:15,606 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-21 11:47:15,606 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-21 11:47:15,606 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-21 11:47:15,606 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-21 11:47:15,606 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-21 11:47:15,606 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-21 11:47:15,607 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 11:47:15,607 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-21 11:47:15,607 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-21 11:47:15,607 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-21 11:47:15,607 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-21 11:47:15,608 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-21 11:47:15,608 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-21 11:47:15,608 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-21 11:47:15,608 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-21 11:47:15,608 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-21 11:47:15,609 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-21 11:47:15,609 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b9d207296596aa3375527680ff88bb2bc1830663ee47f0fb08df7239383517f9 [2021-12-21 11:47:15,859 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-21 11:47:15,880 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-21 11:47:15,882 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-21 11:47:15,882 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-21 11:47:15,883 INFO L275 PluginConnector]: CDTParser initialized [2021-12-21 11:47:15,884 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/bary_diverge.c [2021-12-21 11:47:15,926 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/210c805ac/b3d9a02e55484f0caf8977b58a9809b5/FLAG5e8852b0d [2021-12-21 11:47:16,249 INFO L306 CDTParser]: Found 1 translation units. [2021-12-21 11:47:16,249 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/bary_diverge.c [2021-12-21 11:47:16,253 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/210c805ac/b3d9a02e55484f0caf8977b58a9809b5/FLAG5e8852b0d [2021-12-21 11:47:16,693 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/210c805ac/b3d9a02e55484f0caf8977b58a9809b5 [2021-12-21 11:47:16,695 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-21 11:47:16,696 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-21 11:47:16,698 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-21 11:47:16,699 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-21 11:47:16,709 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-21 11:47:16,710 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 11:47:16" (1/1) ... [2021-12-21 11:47:16,710 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@248d0cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:47:16, skipping insertion in model container [2021-12-21 11:47:16,711 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 11:47:16" (1/1) ... [2021-12-21 11:47:16,721 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-21 11:47:16,732 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-21 11:47:16,825 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/bary_diverge.c[632,645] [2021-12-21 11:47:16,839 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 11:47:16,847 INFO L203 MainTranslator]: Completed pre-run [2021-12-21 11:47:16,893 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/bary_diverge.c[632,645] [2021-12-21 11:47:16,906 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 11:47:16,920 INFO L208 MainTranslator]: Completed translation [2021-12-21 11:47:16,921 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:47:16 WrapperNode [2021-12-21 11:47:16,921 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-21 11:47:16,922 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-21 11:47:16,923 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-21 11:47:16,923 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-21 11:47:16,927 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:47:16" (1/1) ... [2021-12-21 11:47:16,939 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:47:16" (1/1) ... [2021-12-21 11:47:16,957 INFO L137 Inliner]: procedures = 18, calls = 16, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 70 [2021-12-21 11:47:16,957 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-21 11:47:16,958 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-21 11:47:16,958 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-21 11:47:16,958 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-21 11:47:16,963 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:47:16" (1/1) ... [2021-12-21 11:47:16,964 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:47:16" (1/1) ... [2021-12-21 11:47:16,968 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:47:16" (1/1) ... [2021-12-21 11:47:16,969 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:47:16" (1/1) ... [2021-12-21 11:47:16,981 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:47:16" (1/1) ... [2021-12-21 11:47:16,986 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:47:16" (1/1) ... [2021-12-21 11:47:16,990 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:47:16" (1/1) ... [2021-12-21 11:47:16,992 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-21 11:47:16,994 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-21 11:47:16,994 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-21 11:47:16,994 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-21 11:47:16,995 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:47:16" (1/1) ... [2021-12-21 11:47:16,999 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 11:47:17,006 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 11:47:17,020 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-21 11:47:17,036 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-21 11:47:17,049 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-21 11:47:17,052 INFO L130 BoogieDeclarations]: Found specification of procedure RANDOM_INPUT [2021-12-21 11:47:17,052 INFO L138 BoogieDeclarations]: Found implementation of procedure RANDOM_INPUT [2021-12-21 11:47:17,052 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-21 11:47:17,052 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-21 11:47:17,052 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-21 11:47:17,111 INFO L234 CfgBuilder]: Building ICFG [2021-12-21 11:47:17,112 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-21 11:47:17,453 INFO L275 CfgBuilder]: Performing block encoding [2021-12-21 11:47:17,457 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-21 11:47:17,457 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-21 11:47:17,458 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 11:47:17 BoogieIcfgContainer [2021-12-21 11:47:17,459 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-21 11:47:17,469 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-21 11:47:17,469 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-21 11:47:17,471 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-21 11:47:17,471 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 11:47:16" (1/3) ... [2021-12-21 11:47:17,472 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d3138b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 11:47:17, skipping insertion in model container [2021-12-21 11:47:17,472 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:47:16" (2/3) ... [2021-12-21 11:47:17,472 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d3138b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 11:47:17, skipping insertion in model container [2021-12-21 11:47:17,472 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 11:47:17" (3/3) ... [2021-12-21 11:47:17,473 INFO L111 eAbstractionObserver]: Analyzing ICFG bary_diverge.c [2021-12-21 11:47:17,476 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-21 11:47:17,476 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-21 11:47:17,558 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-21 11:47:17,565 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-21 11:47:17,565 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-21 11:47:17,580 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 24 states have (on average 1.2916666666666667) internal successors, (31), 25 states have internal predecessors, (31), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-12-21 11:47:17,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-12-21 11:47:17,586 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 11:47:17,586 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 11:47:17,587 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 11:47:17,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 11:47:17,594 INFO L85 PathProgramCache]: Analyzing trace with hash 372835822, now seen corresponding path program 1 times [2021-12-21 11:47:17,602 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-21 11:47:17,602 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [518324613] [2021-12-21 11:47:17,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 11:47:17,603 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-21 11:47:17,603 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-21 11:47:17,605 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-21 11:47:17,606 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-12-21 11:47:17,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 11:47:17,690 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 1 conjunts are in the unsatisfiable core [2021-12-21 11:47:17,693 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 11:47:17,774 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-21 11:47:17,774 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 11:47:17,775 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-21 11:47:17,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [518324613] [2021-12-21 11:47:17,775 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [518324613] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 11:47:17,776 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 11:47:17,776 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-21 11:47:17,777 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106852248] [2021-12-21 11:47:17,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 11:47:17,780 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-21 11:47:17,781 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-21 11:47:17,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-21 11:47:17,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-21 11:47:17,815 INFO L87 Difference]: Start difference. First operand has 32 states, 24 states have (on average 1.2916666666666667) internal successors, (31), 25 states have internal predecessors, (31), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-21 11:47:17,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 11:47:17,832 INFO L93 Difference]: Finished difference Result 61 states and 83 transitions. [2021-12-21 11:47:17,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-21 11:47:17,835 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 22 [2021-12-21 11:47:17,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 11:47:17,839 INFO L225 Difference]: With dead ends: 61 [2021-12-21 11:47:17,839 INFO L226 Difference]: Without dead ends: 28 [2021-12-21 11:47:17,841 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-21 11:47:17,844 INFO L933 BasicCegarLoop]: 38 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, 38 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 11:47:17,845 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 11:47:17,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-12-21 11:47:17,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2021-12-21 11:47:17,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 21 states have (on average 1.1428571428571428) internal successors, (24), 21 states have internal predecessors, (24), 5 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-12-21 11:47:17,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 34 transitions. [2021-12-21 11:47:17,879 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 34 transitions. Word has length 22 [2021-12-21 11:47:17,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 11:47:17,880 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 34 transitions. [2021-12-21 11:47:17,880 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-21 11:47:17,880 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 34 transitions. [2021-12-21 11:47:17,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-12-21 11:47:17,881 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 11:47:17,881 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 11:47:17,897 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-12-21 11:47:18,089 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-21 11:47:18,089 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 11:47:18,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 11:47:18,090 INFO L85 PathProgramCache]: Analyzing trace with hash -920244306, now seen corresponding path program 1 times [2021-12-21 11:47:18,091 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-21 11:47:18,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [840621582] [2021-12-21 11:47:18,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 11:47:18,091 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-21 11:47:18,091 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-21 11:47:18,092 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-21 11:47:18,094 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-12-21 11:47:18,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 11:47:18,139 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-21 11:47:18,141 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 11:47:18,566 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-21 11:47:18,566 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 11:47:18,566 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-21 11:47:18,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [840621582] [2021-12-21 11:47:18,567 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [840621582] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 11:47:18,567 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 11:47:18,567 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-21 11:47:18,567 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291226217] [2021-12-21 11:47:18,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 11:47:18,568 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-21 11:47:18,568 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-21 11:47:18,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-21 11:47:18,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-21 11:47:18,569 INFO L87 Difference]: Start difference. First operand 28 states and 34 transitions. Second operand has 9 states, 9 states have (on average 2.0) internal successors, (18), 8 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-21 11:47:21,051 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-21 11:47:21,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 11:47:21,620 INFO L93 Difference]: Finished difference Result 54 states and 66 transitions. [2021-12-21 11:47:21,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-21 11:47:21,621 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.0) internal successors, (18), 8 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 22 [2021-12-21 11:47:21,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 11:47:21,622 INFO L225 Difference]: With dead ends: 54 [2021-12-21 11:47:21,622 INFO L226 Difference]: Without dead ends: 52 [2021-12-21 11:47:21,623 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2021-12-21 11:47:21,623 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 56 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 27 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 190 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-12-21 11:47:21,624 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [56 Valid, 190 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 136 Invalid, 1 Unknown, 0 Unchecked, 2.5s Time] [2021-12-21 11:47:21,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-12-21 11:47:21,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 45. [2021-12-21 11:47:21,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 34 states have (on average 1.1470588235294117) internal successors, (39), 35 states have internal predecessors, (39), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) [2021-12-21 11:47:21,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 55 transitions. [2021-12-21 11:47:21,631 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 55 transitions. Word has length 22 [2021-12-21 11:47:21,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 11:47:21,631 INFO L470 AbstractCegarLoop]: Abstraction has 45 states and 55 transitions. [2021-12-21 11:47:21,631 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.0) internal successors, (18), 8 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-21 11:47:21,632 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 55 transitions. [2021-12-21 11:47:21,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-12-21 11:47:21,632 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 11:47:21,632 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 11:47:21,651 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-12-21 11:47:21,844 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-21 11:47:21,844 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 11:47:21,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 11:47:21,845 INFO L85 PathProgramCache]: Analyzing trace with hash -920184724, now seen corresponding path program 1 times [2021-12-21 11:47:21,845 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-21 11:47:21,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1263063846] [2021-12-21 11:47:21,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 11:47:21,846 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-21 11:47:21,846 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-21 11:47:21,847 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) [2021-12-21 11:47:21,848 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-12-21 11:47:22,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 11:47:22,012 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-21 11:47:22,013 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 11:47:22,098 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-12-21 11:47:22,099 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 11:47:22,099 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-21 11:47:22,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1263063846] [2021-12-21 11:47:22,099 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1263063846] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 11:47:22,099 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 11:47:22,099 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-21 11:47:22,100 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252077899] [2021-12-21 11:47:22,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 11:47:22,100 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 11:47:22,100 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-21 11:47:22,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 11:47:22,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 11:47:22,101 INFO L87 Difference]: Start difference. First operand 45 states and 55 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-21 11:47:24,179 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-21 11:47:24,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 11:47:24,181 INFO L93 Difference]: Finished difference Result 85 states and 98 transitions. [2021-12-21 11:47:24,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 11:47:24,208 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 22 [2021-12-21 11:47:24,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 11:47:24,211 INFO L225 Difference]: With dead ends: 85 [2021-12-21 11:47:24,211 INFO L226 Difference]: Without dead ends: 63 [2021-12-21 11:47:24,211 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 11:47:24,212 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 10 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-12-21 11:47:24,213 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 57 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 1 Unknown, 0 Unchecked, 2.1s Time] [2021-12-21 11:47:24,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2021-12-21 11:47:24,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 60. [2021-12-21 11:47:24,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 46 states have (on average 1.108695652173913) internal successors, (51), 48 states have internal predecessors, (51), 9 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (9), 7 states have call predecessors, (9), 9 states have call successors, (9) [2021-12-21 11:47:24,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 69 transitions. [2021-12-21 11:47:24,221 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 69 transitions. Word has length 22 [2021-12-21 11:47:24,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 11:47:24,221 INFO L470 AbstractCegarLoop]: Abstraction has 60 states and 69 transitions. [2021-12-21 11:47:24,221 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-21 11:47:24,221 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 69 transitions. [2021-12-21 11:47:24,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-12-21 11:47:24,222 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 11:47:24,223 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 11:47:24,233 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-12-21 11:47:24,433 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-21 11:47:24,434 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 11:47:24,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 11:47:24,434 INFO L85 PathProgramCache]: Analyzing trace with hash -961441789, now seen corresponding path program 1 times [2021-12-21 11:47:24,434 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-21 11:47:24,435 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1757711099] [2021-12-21 11:47:24,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 11:47:24,435 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-21 11:47:24,435 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-21 11:47:24,436 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) [2021-12-21 11:47:24,436 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-12-21 11:47:24,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 11:47:24,489 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-21 11:47:24,491 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 11:47:24,895 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-12-21 11:47:24,895 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 11:47:24,895 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-21 11:47:24,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1757711099] [2021-12-21 11:47:24,895 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1757711099] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 11:47:24,895 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 11:47:24,895 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-21 11:47:24,895 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706207897] [2021-12-21 11:47:24,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 11:47:24,896 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-21 11:47:24,896 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-21 11:47:24,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-21 11:47:24,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-21 11:47:24,897 INFO L87 Difference]: Start difference. First operand 60 states and 69 transitions. Second operand has 9 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 8 states have internal predecessors, (30), 1 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2021-12-21 11:47:27,572 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-21 11:47:27,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 11:47:27,797 INFO L93 Difference]: Finished difference Result 83 states and 93 transitions. [2021-12-21 11:47:27,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-21 11:47:27,798 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 8 states have internal predecessors, (30), 1 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) Word has length 52 [2021-12-21 11:47:27,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 11:47:27,799 INFO L225 Difference]: With dead ends: 83 [2021-12-21 11:47:27,799 INFO L226 Difference]: Without dead ends: 81 [2021-12-21 11:47:27,799 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2021-12-21 11:47:27,800 INFO L933 BasicCegarLoop]: 42 mSDtfsCounter, 52 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 28 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 217 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-12-21 11:47:27,800 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [52 Valid, 217 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 145 Invalid, 1 Unknown, 0 Unchecked, 2.4s Time] [2021-12-21 11:47:27,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2021-12-21 11:47:27,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 55. [2021-12-21 11:47:27,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 42 states have (on average 1.0952380952380953) internal successors, (46), 43 states have internal predecessors, (46), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) [2021-12-21 11:47:27,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 62 transitions. [2021-12-21 11:47:27,806 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 62 transitions. Word has length 52 [2021-12-21 11:47:27,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 11:47:27,806 INFO L470 AbstractCegarLoop]: Abstraction has 55 states and 62 transitions. [2021-12-21 11:47:27,806 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 8 states have internal predecessors, (30), 1 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2021-12-21 11:47:27,806 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 62 transitions. [2021-12-21 11:47:27,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-12-21 11:47:27,807 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 11:47:27,807 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 11:47:27,815 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-12-21 11:47:28,015 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-21 11:47:28,015 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 11:47:28,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 11:47:28,016 INFO L85 PathProgramCache]: Analyzing trace with hash -961382207, now seen corresponding path program 1 times [2021-12-21 11:47:28,016 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-21 11:47:28,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1922673286] [2021-12-21 11:47:28,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 11:47:28,017 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-21 11:47:28,017 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-21 11:47:28,018 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-21 11:47:28,018 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-12-21 11:47:28,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 11:47:28,350 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 15 conjunts are in the unsatisfiable core [2021-12-21 11:47:28,356 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 11:48:08,496 WARN L227 SmtUtils]: Spent 8.83s on a formula simplification that was a NOOP. DAG size: 25 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)