./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-newlib/double_req_bl_0970a.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ae007674 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/float-newlib/double_req_bl_0970a.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 bfed7fd71f730b55d3806beef3ca32fd0a7855d8ce409d1c47ac24ae5abb4105 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ae00767 [2021-12-27 23:36:30,988 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-27 23:36:30,991 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-27 23:36:31,034 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-27 23:36:31,035 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-27 23:36:31,037 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-27 23:36:31,038 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-27 23:36:31,042 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-27 23:36:31,044 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-27 23:36:31,047 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-27 23:36:31,048 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-27 23:36:31,049 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-27 23:36:31,049 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-27 23:36:31,051 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-27 23:36:31,052 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-27 23:36:31,055 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-27 23:36:31,056 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-27 23:36:31,056 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-27 23:36:31,057 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-27 23:36:31,061 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-27 23:36:31,062 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-27 23:36:31,063 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-27 23:36:31,064 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-27 23:36:31,065 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-27 23:36:31,070 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-27 23:36:31,070 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-27 23:36:31,070 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-27 23:36:31,071 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-27 23:36:31,071 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-27 23:36:31,072 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-27 23:36:31,072 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-27 23:36:31,073 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-27 23:36:31,074 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-27 23:36:31,074 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-27 23:36:31,075 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-27 23:36:31,075 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-27 23:36:31,076 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-27 23:36:31,076 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-27 23:36:31,076 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-27 23:36:31,077 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-27 23:36:31,078 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-27 23:36:31,078 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-27 23:36:31,106 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-27 23:36:31,106 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-27 23:36:31,106 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-27 23:36:31,106 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-27 23:36:31,107 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-27 23:36:31,107 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-27 23:36:31,108 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-27 23:36:31,108 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-27 23:36:31,108 INFO L138 SettingsManager]: * Use SBE=true [2021-12-27 23:36:31,108 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-27 23:36:31,109 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-27 23:36:31,109 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-27 23:36:31,109 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-27 23:36:31,109 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-27 23:36:31,110 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-27 23:36:31,110 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-27 23:36:31,110 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-27 23:36:31,110 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-27 23:36:31,110 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-27 23:36:31,110 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-27 23:36:31,111 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-27 23:36:31,111 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-27 23:36:31,111 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-27 23:36:31,111 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-27 23:36:31,111 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-27 23:36:31,111 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-27 23:36:31,112 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-27 23:36:31,112 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-27 23:36:31,112 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-27 23:36:31,112 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-27 23:36:31,112 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-27 23:36:31,112 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-27 23:36:31,113 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-27 23:36:31,113 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bfed7fd71f730b55d3806beef3ca32fd0a7855d8ce409d1c47ac24ae5abb4105 [2021-12-27 23:36:31,397 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-27 23:36:31,429 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-27 23:36:31,431 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-27 23:36:31,432 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-27 23:36:31,432 INFO L275 PluginConnector]: CDTParser initialized [2021-12-27 23:36:31,433 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_0970a.c [2021-12-27 23:36:31,483 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fba6fd83a/7f5a90060d144e9387803266468b1fc4/FLAG5823dbe03 [2021-12-27 23:36:31,895 INFO L306 CDTParser]: Found 1 translation units. [2021-12-27 23:36:31,895 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_0970a.c [2021-12-27 23:36:31,901 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fba6fd83a/7f5a90060d144e9387803266468b1fc4/FLAG5823dbe03 [2021-12-27 23:36:31,913 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fba6fd83a/7f5a90060d144e9387803266468b1fc4 [2021-12-27 23:36:31,915 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-27 23:36:31,916 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-27 23:36:31,918 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-27 23:36:31,918 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-27 23:36:31,920 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-27 23:36:31,921 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.12 11:36:31" (1/1) ... [2021-12-27 23:36:31,921 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6de733e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 11:36:31, skipping insertion in model container [2021-12-27 23:36:31,922 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.12 11:36:31" (1/1) ... [2021-12-27 23:36:31,926 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-27 23:36:31,949 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-27 23:36:32,151 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-newlib/double_req_bl_0970a.c[4903,4916] [2021-12-27 23:36:32,154 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-27 23:36:32,162 INFO L203 MainTranslator]: Completed pre-run [2021-12-27 23:36:32,203 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-newlib/double_req_bl_0970a.c[4903,4916] [2021-12-27 23:36:32,208 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-27 23:36:32,218 INFO L208 MainTranslator]: Completed translation [2021-12-27 23:36:32,219 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 11:36:32 WrapperNode [2021-12-27 23:36:32,219 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-27 23:36:32,220 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-27 23:36:32,220 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-27 23:36:32,220 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-27 23:36:32,225 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 11:36:32" (1/1) ... [2021-12-27 23:36:32,241 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 11:36:32" (1/1) ... [2021-12-27 23:36:32,271 INFO L137 Inliner]: procedures = 19, calls = 43, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 242 [2021-12-27 23:36:32,271 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-27 23:36:32,272 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-27 23:36:32,272 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-27 23:36:32,272 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-27 23:36:32,278 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 11:36:32" (1/1) ... [2021-12-27 23:36:32,278 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 11:36:32" (1/1) ... [2021-12-27 23:36:32,281 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 11:36:32" (1/1) ... [2021-12-27 23:36:32,281 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 11:36:32" (1/1) ... [2021-12-27 23:36:32,288 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 11:36:32" (1/1) ... [2021-12-27 23:36:32,302 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 11:36:32" (1/1) ... [2021-12-27 23:36:32,304 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 11:36:32" (1/1) ... [2021-12-27 23:36:32,309 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-27 23:36:32,311 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-27 23:36:32,311 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-27 23:36:32,312 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-27 23:36:32,313 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 11:36:32" (1/1) ... [2021-12-27 23:36:32,317 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-27 23:36:32,325 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-27 23:36:32,334 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) [2021-12-27 23:36:32,343 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 [2021-12-27 23:36:32,365 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-27 23:36:32,365 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-27 23:36:32,366 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-27 23:36:32,366 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-12-27 23:36:32,366 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-27 23:36:32,367 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-12-27 23:36:32,367 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-27 23:36:32,370 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-27 23:36:32,370 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-27 23:36:32,370 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-27 23:36:32,486 INFO L234 CfgBuilder]: Building ICFG [2021-12-27 23:36:32,488 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-27 23:36:32,732 INFO L275 CfgBuilder]: Performing block encoding [2021-12-27 23:36:32,736 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-27 23:36:32,740 INFO L299 CfgBuilder]: Removed 14 assume(true) statements. [2021-12-27 23:36:32,741 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.12 11:36:32 BoogieIcfgContainer [2021-12-27 23:36:32,741 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-27 23:36:32,742 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-27 23:36:32,743 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-27 23:36:32,745 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-27 23:36:32,745 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.12 11:36:31" (1/3) ... [2021-12-27 23:36:32,746 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@524e2884 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.12 11:36:32, skipping insertion in model container [2021-12-27 23:36:32,746 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 11:36:32" (2/3) ... [2021-12-27 23:36:32,746 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@524e2884 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.12 11:36:32, skipping insertion in model container [2021-12-27 23:36:32,746 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.12 11:36:32" (3/3) ... [2021-12-27 23:36:32,747 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_0970a.c [2021-12-27 23:36:32,751 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-27 23:36:32,751 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-27 23:36:32,779 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-27 23:36:32,783 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 [2021-12-27 23:36:32,784 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-27 23:36:32,793 INFO L276 IsEmpty]: Start isEmpty. Operand has 49 states, 47 states have (on average 1.702127659574468) internal successors, (80), 48 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 23:36:32,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-12-27 23:36:32,797 INFO L506 BasicCegarLoop]: Found error trace [2021-12-27 23:36:32,797 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-27 23:36:32,798 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-27 23:36:32,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-27 23:36:32,801 INFO L85 PathProgramCache]: Analyzing trace with hash -1392627184, now seen corresponding path program 1 times [2021-12-27 23:36:32,808 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-27 23:36:32,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744551799] [2021-12-27 23:36:32,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-27 23:36:32,809 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-27 23:36:32,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-27 23:36:32,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-27 23:36:32,931 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-27 23:36:32,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744551799] [2021-12-27 23:36:32,932 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1744551799] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-27 23:36:32,932 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-27 23:36:32,932 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-27 23:36:32,933 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308673624] [2021-12-27 23:36:32,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-27 23:36:32,936 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-27 23:36:32,936 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-27 23:36:32,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-27 23:36:32,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-27 23:36:32,959 INFO L87 Difference]: Start difference. First operand has 49 states, 47 states have (on average 1.702127659574468) internal successors, (80), 48 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 23:36:32,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-27 23:36:32,980 INFO L93 Difference]: Finished difference Result 95 states and 156 transitions. [2021-12-27 23:36:32,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-27 23:36:32,982 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-12-27 23:36:32,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-27 23:36:32,988 INFO L225 Difference]: With dead ends: 95 [2021-12-27 23:36:32,989 INFO L226 Difference]: Without dead ends: 45 [2021-12-27 23:36:32,991 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-27 23:36:32,996 INFO L933 BasicCegarLoop]: 65 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, 65 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 [2021-12-27 23:36:32,997 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-27 23:36:33,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2021-12-27 23:36:33,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2021-12-27 23:36:33,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 44 states have (on average 1.3636363636363635) internal successors, (60), 44 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 23:36:33,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 60 transitions. [2021-12-27 23:36:33,033 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 60 transitions. Word has length 12 [2021-12-27 23:36:33,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-27 23:36:33,034 INFO L470 AbstractCegarLoop]: Abstraction has 45 states and 60 transitions. [2021-12-27 23:36:33,034 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 23:36:33,034 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 60 transitions. [2021-12-27 23:36:33,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-12-27 23:36:33,035 INFO L506 BasicCegarLoop]: Found error trace [2021-12-27 23:36:33,035 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-27 23:36:33,036 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-27 23:36:33,036 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-27 23:36:33,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-27 23:36:33,040 INFO L85 PathProgramCache]: Analyzing trace with hash 1009660131, now seen corresponding path program 1 times [2021-12-27 23:36:33,040 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-27 23:36:33,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423831628] [2021-12-27 23:36:33,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-27 23:36:33,040 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-27 23:36:33,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-27 23:36:33,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-27 23:36:33,119 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-27 23:36:33,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423831628] [2021-12-27 23:36:33,120 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423831628] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-27 23:36:33,120 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-27 23:36:33,120 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-27 23:36:33,121 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122323655] [2021-12-27 23:36:33,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-27 23:36:33,122 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-27 23:36:33,122 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-27 23:36:33,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-27 23:36:33,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-27 23:36:33,123 INFO L87 Difference]: Start difference. First operand 45 states and 60 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 23:36:33,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-27 23:36:33,143 INFO L93 Difference]: Finished difference Result 83 states and 112 transitions. [2021-12-27 23:36:33,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-27 23:36:33,143 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-12-27 23:36:33,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-27 23:36:33,145 INFO L225 Difference]: With dead ends: 83 [2021-12-27 23:36:33,145 INFO L226 Difference]: Without dead ends: 45 [2021-12-27 23:36:33,151 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-27 23:36:33,152 INFO L933 BasicCegarLoop]: 60 mSDtfsCounter, 0 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-27 23:36:33,152 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 115 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-27 23:36:33,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2021-12-27 23:36:33,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2021-12-27 23:36:33,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 44 states have (on average 1.3409090909090908) internal successors, (59), 44 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 23:36:33,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 59 transitions. [2021-12-27 23:36:33,161 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 59 transitions. Word has length 13 [2021-12-27 23:36:33,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-27 23:36:33,162 INFO L470 AbstractCegarLoop]: Abstraction has 45 states and 59 transitions. [2021-12-27 23:36:33,163 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 23:36:33,163 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 59 transitions. [2021-12-27 23:36:33,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-12-27 23:36:33,164 INFO L506 BasicCegarLoop]: Found error trace [2021-12-27 23:36:33,164 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-27 23:36:33,165 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-27 23:36:33,165 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-27 23:36:33,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-27 23:36:33,166 INFO L85 PathProgramCache]: Analyzing trace with hash 34829304, now seen corresponding path program 1 times [2021-12-27 23:36:33,167 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-27 23:36:33,167 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608501243] [2021-12-27 23:36:33,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-27 23:36:33,167 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-27 23:36:33,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-27 23:36:33,227 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-27 23:36:33,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-27 23:36:33,283 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-27 23:36:33,287 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-27 23:36:33,288 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-27 23:36:33,290 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-27 23:36:33,292 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2021-12-27 23:36:33,294 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-27 23:36:33,342 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.12 11:36:33 BoogieIcfgContainer [2021-12-27 23:36:33,343 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-27 23:36:33,343 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-27 23:36:33,343 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-27 23:36:33,344 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-27 23:36:33,344 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.12 11:36:32" (3/4) ... [2021-12-27 23:36:33,346 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-12-27 23:36:33,346 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-27 23:36:33,346 INFO L158 Benchmark]: Toolchain (without parser) took 1429.92ms. Allocated memory was 62.9MB in the beginning and 77.6MB in the end (delta: 14.7MB). Free memory was 43.7MB in the beginning and 38.1MB in the end (delta: 5.5MB). Peak memory consumption was 19.5MB. Max. memory is 16.1GB. [2021-12-27 23:36:33,347 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 62.9MB. Free memory was 45.5MB in the beginning and 45.4MB in the end (delta: 84.0kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-27 23:36:33,347 INFO L158 Benchmark]: CACSL2BoogieTranslator took 301.16ms. Allocated memory is still 62.9MB. Free memory was 43.4MB in the beginning and 43.1MB in the end (delta: 390.1kB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-12-27 23:36:33,350 INFO L158 Benchmark]: Boogie Procedure Inliner took 51.59ms. Allocated memory is still 62.9MB. Free memory was 42.8MB in the beginning and 40.6MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-27 23:36:33,350 INFO L158 Benchmark]: Boogie Preprocessor took 38.41ms. Allocated memory is still 62.9MB. Free memory was 40.6MB in the beginning and 38.7MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-27 23:36:33,351 INFO L158 Benchmark]: RCFGBuilder took 430.18ms. Allocated memory was 62.9MB in the beginning and 77.6MB in the end (delta: 14.7MB). Free memory was 38.5MB in the beginning and 53.0MB in the end (delta: -14.5MB). Peak memory consumption was 14.9MB. Max. memory is 16.1GB. [2021-12-27 23:36:33,351 INFO L158 Benchmark]: TraceAbstraction took 600.34ms. Allocated memory is still 77.6MB. Free memory was 52.6MB in the beginning and 38.5MB in the end (delta: 14.1MB). Peak memory consumption was 14.3MB. Max. memory is 16.1GB. [2021-12-27 23:36:33,351 INFO L158 Benchmark]: Witness Printer took 2.57ms. Allocated memory is still 77.6MB. Free memory is still 38.1MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-27 23:36:33,353 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 62.9MB. Free memory was 45.5MB in the beginning and 45.4MB in the end (delta: 84.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 301.16ms. Allocated memory is still 62.9MB. Free memory was 43.4MB in the beginning and 43.1MB in the end (delta: 390.1kB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 51.59ms. Allocated memory is still 62.9MB. Free memory was 42.8MB in the beginning and 40.6MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 38.41ms. Allocated memory is still 62.9MB. Free memory was 40.6MB in the beginning and 38.7MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 430.18ms. Allocated memory was 62.9MB in the beginning and 77.6MB in the end (delta: 14.7MB). Free memory was 38.5MB in the beginning and 53.0MB in the end (delta: -14.5MB). Peak memory consumption was 14.9MB. Max. memory is 16.1GB. * TraceAbstraction took 600.34ms. Allocated memory is still 77.6MB. Free memory was 52.6MB in the beginning and 38.5MB in the end (delta: 14.1MB). Peak memory consumption was 14.3MB. Max. memory is 16.1GB. * Witness Printer took 2.57ms. Allocated memory is still 77.6MB. Free memory is still 38.1MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 190]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 163, overapproximation of bitwiseAnd at line 172, overapproximation of someBinaryArithmeticDOUBLEoperation at line 147. Possible FailurePath: [L19-L28] static const double ln2_hi_log = 6.93147180369123816490e-01, ln2_lo_log = 1.90821492927058770002e-10, two54_log = 1.80143985094819840000e+16, Lg1_log = 6.666666666666735130e-01, Lg2_log = 3.999999999940941908e-01, Lg3_log = 2.857142874366239149e-01, Lg4_log = 2.222219843214978396e-01, Lg5_log = 1.818357216161805012e-01, Lg6_log = 1.531383769920937332e-01, Lg7_log = 1.479819860511658591e-01; [L30] static const double zero = 0.0; [L113-L116] static const double two54_log10 = 1.80143985094819840000e+16, ivln10_log10 = 4.34294481903251816668e-01, log10_2hi_log10 = 3.01029995663611771306e-01, log10_2lo_log10 = 3.69423907715893078616e-13; [L118] static const double zero_log10 = 0.0; VAL [ivln10_log10=108573620475812954167/250000000000000000000, Lg1_log=666666666666673513/1000000000000000000, Lg2_log=999999999985235477/2500000000000000000, Lg3_log=2857142874366239149/10000000000000000000, Lg4_log=555554960803744599/2500000000000000000, Lg5_log=454589304040451253/2500000000000000000, Lg6_log=382845942480234333/2500000000000000000, Lg7_log=1479819860511658591/10000000000000000000, ln2_hi_log=69314718036912381649/100000000000000000000, ln2_lo_log=95410746463529385001/500000000000000000000000000000, log10_2hi_log10=150514997831805885653/500000000000000000000, log10_2lo_log10=46177988464486634827/125000000000000000000000000000000, two54_log=18014398509481984, two54_log10=18014398509481984, zero=0, zero_log10=0] [L182] double x = __VERIFIER_nondet_double(); [L184] x < 0 && isfinite_double(x) [L184] CALL, EXPR isfinite_double(x) [L166] __int32_t hx; VAL [\old(x)=9223372036853727235, ivln10_log10=108573620475812954167/250000000000000000000, Lg1_log=666666666666673513/1000000000000000000, Lg2_log=999999999985235477/2500000000000000000, Lg3_log=2857142874366239149/10000000000000000000, Lg4_log=555554960803744599/2500000000000000000, Lg5_log=454589304040451253/2500000000000000000, Lg6_log=382845942480234333/2500000000000000000, Lg7_log=1479819860511658591/10000000000000000000, ln2_hi_log=69314718036912381649/100000000000000000000, ln2_lo_log=95410746463529385001/500000000000000000000000000000, log10_2hi_log10=150514997831805885653/500000000000000000000, log10_2lo_log10=46177988464486634827/125000000000000000000000000000000, two54_log=18014398509481984, two54_log10=18014398509481984, x=9223372036853727235, zero=0, zero_log10=0] [L168] ieee_double_shape_type gh_u; [L169] gh_u.value = (x) [L170] EXPR gh_u.parts.msw [L170] (hx) = gh_u.parts.msw [L172] return (int)((__uint32_t)((hx & 0x7fffffff) - 0x7ff00000) >> 31); VAL [\old(x)=9223372036853727235, \result=-1, hx=-2, ivln10_log10=108573620475812954167/250000000000000000000, Lg1_log=666666666666673513/1000000000000000000, Lg2_log=999999999985235477/2500000000000000000, Lg3_log=2857142874366239149/10000000000000000000, Lg4_log=555554960803744599/2500000000000000000, Lg5_log=454589304040451253/2500000000000000000, Lg6_log=382845942480234333/2500000000000000000, Lg7_log=1479819860511658591/10000000000000000000, ln2_hi_log=69314718036912381649/100000000000000000000, ln2_lo_log=95410746463529385001/500000000000000000000000000000, log10_2hi_log10=150514997831805885653/500000000000000000000, log10_2lo_log10=46177988464486634827/125000000000000000000000000000000, two54_log=18014398509481984, two54_log10=18014398509481984, x=9223372036853727235, zero=0, zero_log10=0] [L184] RET, EXPR isfinite_double(x) [L184] x < 0 && isfinite_double(x) VAL [isfinite_double(x)=-1, ivln10_log10=108573620475812954167/250000000000000000000, Lg1_log=666666666666673513/1000000000000000000, Lg2_log=999999999985235477/2500000000000000000, Lg3_log=2857142874366239149/10000000000000000000, Lg4_log=555554960803744599/2500000000000000000, Lg5_log=454589304040451253/2500000000000000000, Lg6_log=382845942480234333/2500000000000000000, Lg7_log=1479819860511658591/10000000000000000000, ln2_hi_log=69314718036912381649/100000000000000000000, ln2_lo_log=95410746463529385001/500000000000000000000000000000, log10_2hi_log10=150514997831805885653/500000000000000000000, log10_2lo_log10=46177988464486634827/125000000000000000000000000000000, two54_log=18014398509481984, two54_log10=18014398509481984, x=9223372036853727235, x < 0 && isfinite_double(x)=1, zero=0, zero_log10=0] [L184] COND TRUE x < 0 && isfinite_double(x) [L186] CALL, EXPR __ieee754_log10(x) [L121] double y, z; [L122] __int32_t i, k, hx; [L123] __uint32_t lx; VAL [\old(x)=9223372036853727235, ivln10_log10=108573620475812954167/250000000000000000000, Lg1_log=666666666666673513/1000000000000000000, Lg2_log=999999999985235477/2500000000000000000, Lg3_log=2857142874366239149/10000000000000000000, Lg4_log=555554960803744599/2500000000000000000, Lg5_log=454589304040451253/2500000000000000000, Lg6_log=382845942480234333/2500000000000000000, Lg7_log=1479819860511658591/10000000000000000000, ln2_hi_log=69314718036912381649/100000000000000000000, ln2_lo_log=95410746463529385001/500000000000000000000000000000, log10_2hi_log10=150514997831805885653/500000000000000000000, log10_2lo_log10=46177988464486634827/125000000000000000000000000000000, two54_log=18014398509481984, two54_log10=18014398509481984, x=9223372036853727235, zero=0, zero_log10=0] [L126] ieee_double_shape_type ew_u; [L127] ew_u.value = (x) [L128] EXPR ew_u.parts.msw [L128] (hx) = ew_u.parts.msw [L129] EXPR ew_u.parts.lsw [L129] (lx) = ew_u.parts.lsw [L132] k = 0 VAL [\old(x)=9223372036853727235, hx=2146435072, ivln10_log10=108573620475812954167/250000000000000000000, k=0, Lg1_log=666666666666673513/1000000000000000000, Lg2_log=999999999985235477/2500000000000000000, Lg3_log=2857142874366239149/10000000000000000000, Lg4_log=555554960803744599/2500000000000000000, Lg5_log=454589304040451253/2500000000000000000, Lg6_log=382845942480234333/2500000000000000000, Lg7_log=1479819860511658591/10000000000000000000, ln2_hi_log=69314718036912381649/100000000000000000000, ln2_lo_log=95410746463529385001/500000000000000000000000000000, log10_2hi_log10=150514997831805885653/500000000000000000000, log10_2lo_log10=46177988464486634827/125000000000000000000000000000000, lx=4293918724, two54_log=18014398509481984, two54_log10=18014398509481984, x=9223372036853727235, zero=0, zero_log10=0] [L133] COND FALSE !(hx < 0x00100000) VAL [\old(x)=9223372036853727235, hx=2146435072, ivln10_log10=108573620475812954167/250000000000000000000, k=0, Lg1_log=666666666666673513/1000000000000000000, Lg2_log=999999999985235477/2500000000000000000, Lg3_log=2857142874366239149/10000000000000000000, Lg4_log=555554960803744599/2500000000000000000, Lg5_log=454589304040451253/2500000000000000000, Lg6_log=382845942480234333/2500000000000000000, Lg7_log=1479819860511658591/10000000000000000000, ln2_hi_log=69314718036912381649/100000000000000000000, ln2_lo_log=95410746463529385001/500000000000000000000000000000, log10_2hi_log10=150514997831805885653/500000000000000000000, log10_2lo_log10=46177988464486634827/125000000000000000000000000000000, lx=4293918724, two54_log=18014398509481984, two54_log10=18014398509481984, x=9223372036853727235, zero=0, zero_log10=0] [L146] COND TRUE hx >= 0x7ff00000 [L147] return x + x; VAL [\old(x)=9223372036853727235, hx=2146435072, ivln10_log10=108573620475812954167/250000000000000000000, k=0, Lg1_log=666666666666673513/1000000000000000000, Lg2_log=999999999985235477/2500000000000000000, Lg3_log=2857142874366239149/10000000000000000000, Lg4_log=555554960803744599/2500000000000000000, Lg5_log=454589304040451253/2500000000000000000, Lg6_log=382845942480234333/2500000000000000000, Lg7_log=1479819860511658591/10000000000000000000, ln2_hi_log=69314718036912381649/100000000000000000000, ln2_lo_log=95410746463529385001/500000000000000000000000000000, log10_2hi_log10=150514997831805885653/500000000000000000000, log10_2lo_log10=46177988464486634827/125000000000000000000000000000000, lx=4293918724, two54_log=18014398509481984, two54_log10=18014398509481984, x=9223372036853727235, zero=0, zero_log10=0] [L186] RET, EXPR __ieee754_log10(x) [L186] double res = __ieee754_log10(x); [L189] CALL, EXPR isnan_double(res) [L163] return x != x; VAL [\old(x)=9223372036853727233, \result=0, ivln10_log10=108573620475812954167/250000000000000000000, Lg1_log=666666666666673513/1000000000000000000, Lg2_log=999999999985235477/2500000000000000000, Lg3_log=2857142874366239149/10000000000000000000, Lg4_log=555554960803744599/2500000000000000000, Lg5_log=454589304040451253/2500000000000000000, Lg6_log=382845942480234333/2500000000000000000, Lg7_log=1479819860511658591/10000000000000000000, ln2_hi_log=69314718036912381649/100000000000000000000, ln2_lo_log=95410746463529385001/500000000000000000000000000000, log10_2hi_log10=150514997831805885653/500000000000000000000, log10_2lo_log10=46177988464486634827/125000000000000000000000000000000, two54_log=18014398509481984, two54_log10=18014398509481984, x=9223372036853727233, zero=0, zero_log10=0] [L189] RET, EXPR isnan_double(res) [L189] COND TRUE !isnan_double(res) [L190] reach_error() VAL [ivln10_log10=108573620475812954167/250000000000000000000, Lg1_log=666666666666673513/1000000000000000000, Lg2_log=999999999985235477/2500000000000000000, Lg3_log=2857142874366239149/10000000000000000000, Lg4_log=555554960803744599/2500000000000000000, Lg5_log=454589304040451253/2500000000000000000, Lg6_log=382845942480234333/2500000000000000000, Lg7_log=1479819860511658591/10000000000000000000, ln2_hi_log=69314718036912381649/100000000000000000000, ln2_lo_log=95410746463529385001/500000000000000000000000000000, log10_2hi_log10=150514997831805885653/500000000000000000000, log10_2lo_log10=46177988464486634827/125000000000000000000000000000000, res=9223372036853727233, two54_log=18014398509481984, two54_log10=18014398509481984, x=9223372036853727235, zero=0, zero_log10=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 49 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.5s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 180 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 55 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4 IncrementalHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 125 mSDtfsCounter, 4 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=49occurred in iteration=0, InterpolantAutomatonStates: 5, 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 42 NumberOfCodeBlocks, 42 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 23 ConstructedInterpolants, 0 QuantifiedInterpolants, 24 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-12-27 23:36:33,389 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-newlib/double_req_bl_0970a.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 bfed7fd71f730b55d3806beef3ca32fd0a7855d8ce409d1c47ac24ae5abb4105 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ae00767 [2021-12-27 23:36:34,917 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-27 23:36:34,918 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-27 23:36:34,936 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-27 23:36:34,939 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-27 23:36:34,940 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-27 23:36:34,942 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-27 23:36:34,952 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-27 23:36:34,954 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-27 23:36:34,956 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-27 23:36:34,957 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-27 23:36:34,961 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-27 23:36:34,961 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-27 23:36:34,963 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-27 23:36:34,964 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-27 23:36:34,965 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-27 23:36:34,966 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-27 23:36:34,969 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-27 23:36:34,970 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-27 23:36:34,973 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-27 23:36:34,980 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-27 23:36:34,981 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-27 23:36:34,981 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-27 23:36:34,982 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-27 23:36:34,984 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-27 23:36:34,986 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-27 23:36:34,987 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-27 23:36:34,987 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-27 23:36:34,987 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-27 23:36:34,988 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-27 23:36:34,988 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-27 23:36:34,989 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-27 23:36:34,989 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-27 23:36:34,990 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-27 23:36:34,990 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-27 23:36:34,990 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-27 23:36:34,991 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-27 23:36:34,991 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-27 23:36:34,991 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-27 23:36:34,992 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-27 23:36:34,992 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-27 23:36:35,000 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-12-27 23:36:35,024 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-27 23:36:35,024 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-27 23:36:35,025 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-27 23:36:35,025 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-27 23:36:35,026 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-27 23:36:35,026 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-27 23:36:35,027 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-27 23:36:35,027 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-27 23:36:35,027 INFO L138 SettingsManager]: * Use SBE=true [2021-12-27 23:36:35,027 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-27 23:36:35,028 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-27 23:36:35,028 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-27 23:36:35,028 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-27 23:36:35,028 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-27 23:36:35,029 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-27 23:36:35,029 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-27 23:36:35,029 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-27 23:36:35,029 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-27 23:36:35,029 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-27 23:36:35,029 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-27 23:36:35,029 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-27 23:36:35,029 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-27 23:36:35,030 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-27 23:36:35,030 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-27 23:36:35,030 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-27 23:36:35,030 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-27 23:36:35,033 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-27 23:36:35,047 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-27 23:36:35,047 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-27 23:36:35,047 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-27 23:36:35,047 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-27 23:36:35,047 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-27 23:36:35,048 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-27 23:36:35,048 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-27 23:36:35,048 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-27 23:36:35,048 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-27 23:36:35,048 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bfed7fd71f730b55d3806beef3ca32fd0a7855d8ce409d1c47ac24ae5abb4105 [2021-12-27 23:36:35,292 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-27 23:36:35,310 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-27 23:36:35,312 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-27 23:36:35,313 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-27 23:36:35,314 INFO L275 PluginConnector]: CDTParser initialized [2021-12-27 23:36:35,315 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_0970a.c [2021-12-27 23:36:35,375 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c07dc9c54/5d3e88b07da9442597d238f49cc1e38f/FLAG81684e71c [2021-12-27 23:36:35,738 INFO L306 CDTParser]: Found 1 translation units. [2021-12-27 23:36:35,739 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_0970a.c [2021-12-27 23:36:35,745 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c07dc9c54/5d3e88b07da9442597d238f49cc1e38f/FLAG81684e71c [2021-12-27 23:36:35,758 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c07dc9c54/5d3e88b07da9442597d238f49cc1e38f [2021-12-27 23:36:35,760 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-27 23:36:35,762 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-27 23:36:35,764 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-27 23:36:35,764 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-27 23:36:35,767 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-27 23:36:35,767 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.12 11:36:35" (1/1) ... [2021-12-27 23:36:35,768 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25841582 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 11:36:35, skipping insertion in model container [2021-12-27 23:36:35,768 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.12 11:36:35" (1/1) ... [2021-12-27 23:36:35,773 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-27 23:36:35,808 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-27 23:36:36,024 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-newlib/double_req_bl_0970a.c[4903,4916] [2021-12-27 23:36:36,030 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-27 23:36:36,044 INFO L203 MainTranslator]: Completed pre-run [2021-12-27 23:36:36,091 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-newlib/double_req_bl_0970a.c[4903,4916] [2021-12-27 23:36:36,095 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-27 23:36:36,116 INFO L208 MainTranslator]: Completed translation [2021-12-27 23:36:36,117 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 11:36:36 WrapperNode [2021-12-27 23:36:36,117 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-27 23:36:36,118 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-27 23:36:36,118 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-27 23:36:36,119 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-27 23:36:36,123 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 11:36:36" (1/1) ... [2021-12-27 23:36:36,142 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 11:36:36" (1/1) ... [2021-12-27 23:36:36,172 INFO L137 Inliner]: procedures = 22, calls = 43, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 241 [2021-12-27 23:36:36,172 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-27 23:36:36,173 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-27 23:36:36,173 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-27 23:36:36,173 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-27 23:36:36,180 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 11:36:36" (1/1) ... [2021-12-27 23:36:36,181 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 11:36:36" (1/1) ... [2021-12-27 23:36:36,196 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 11:36:36" (1/1) ... [2021-12-27 23:36:36,199 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 11:36:36" (1/1) ... [2021-12-27 23:36:36,208 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 11:36:36" (1/1) ... [2021-12-27 23:36:36,215 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 11:36:36" (1/1) ... [2021-12-27 23:36:36,221 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 11:36:36" (1/1) ... [2021-12-27 23:36:36,227 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-27 23:36:36,228 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-27 23:36:36,228 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-27 23:36:36,228 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-27 23:36:36,229 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 11:36:36" (1/1) ... [2021-12-27 23:36:36,233 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-27 23:36:36,240 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-27 23:36:36,249 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) [2021-12-27 23:36:36,256 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 [2021-12-27 23:36:36,275 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-27 23:36:36,275 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2021-12-27 23:36:36,275 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2021-12-27 23:36:36,276 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-27 23:36:36,276 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-27 23:36:36,276 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-12-27 23:36:36,276 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-27 23:36:36,276 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-27 23:36:36,276 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-12-27 23:36:36,276 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-27 23:36:36,352 INFO L234 CfgBuilder]: Building ICFG [2021-12-27 23:36:36,353 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-27 23:37:06,444 INFO L275 CfgBuilder]: Performing block encoding [2021-12-27 23:37:06,448 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-27 23:37:06,449 INFO L299 CfgBuilder]: Removed 14 assume(true) statements. [2021-12-27 23:37:06,450 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.12 11:37:06 BoogieIcfgContainer [2021-12-27 23:37:06,450 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-27 23:37:06,452 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-27 23:37:06,452 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-27 23:37:06,454 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-27 23:37:06,455 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.12 11:36:35" (1/3) ... [2021-12-27 23:37:06,455 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f15f88c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.12 11:37:06, skipping insertion in model container [2021-12-27 23:37:06,455 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 11:36:36" (2/3) ... [2021-12-27 23:37:06,456 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f15f88c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.12 11:37:06, skipping insertion in model container [2021-12-27 23:37:06,456 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.12 11:37:06" (3/3) ... [2021-12-27 23:37:06,457 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_0970a.c [2021-12-27 23:37:06,461 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-27 23:37:06,461 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-27 23:37:06,494 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-27 23:37:06,499 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 [2021-12-27 23:37:06,499 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-27 23:37:06,508 INFO L276 IsEmpty]: Start isEmpty. Operand has 49 states, 47 states have (on average 1.702127659574468) internal successors, (80), 48 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 23:37:06,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-12-27 23:37:06,512 INFO L506 BasicCegarLoop]: Found error trace [2021-12-27 23:37:06,513 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-27 23:37:06,513 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-27 23:37:06,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-27 23:37:06,517 INFO L85 PathProgramCache]: Analyzing trace with hash -1392627184, now seen corresponding path program 1 times [2021-12-27 23:37:06,525 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-27 23:37:06,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1988813995] [2021-12-27 23:37:06,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-27 23:37:06,526 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-27 23:37:06,527 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-27 23:37:06,528 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) [2021-12-27 23:37:06,532 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-12-27 23:37:06,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-27 23:37:06,658 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 1 conjunts are in the unsatisfiable core [2021-12-27 23:37:06,676 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-27 23:37:06,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-27 23:37:06,883 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-27 23:37:06,883 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-27 23:37:06,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1988813995] [2021-12-27 23:37:06,884 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1988813995] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-27 23:37:06,884 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-27 23:37:06,884 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-27 23:37:06,885 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348000697] [2021-12-27 23:37:06,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-27 23:37:06,888 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-27 23:37:06,889 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-27 23:37:06,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-27 23:37:06,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-27 23:37:06,921 INFO L87 Difference]: Start difference. First operand has 49 states, 47 states have (on average 1.702127659574468) internal successors, (80), 48 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 23:37:06,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-27 23:37:06,941 INFO L93 Difference]: Finished difference Result 95 states and 156 transitions. [2021-12-27 23:37:06,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-27 23:37:06,944 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-12-27 23:37:06,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-27 23:37:06,951 INFO L225 Difference]: With dead ends: 95 [2021-12-27 23:37:06,951 INFO L226 Difference]: Without dead ends: 45 [2021-12-27 23:37:06,954 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-27 23:37:06,957 INFO L933 BasicCegarLoop]: 65 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, 65 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 [2021-12-27 23:37:06,959 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-27 23:37:06,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2021-12-27 23:37:06,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2021-12-27 23:37:06,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 44 states have (on average 1.3636363636363635) internal successors, (60), 44 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 23:37:06,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 60 transitions. [2021-12-27 23:37:06,992 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 60 transitions. Word has length 12 [2021-12-27 23:37:06,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-27 23:37:06,993 INFO L470 AbstractCegarLoop]: Abstraction has 45 states and 60 transitions. [2021-12-27 23:37:06,993 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 23:37:06,993 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 60 transitions. [2021-12-27 23:37:06,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-12-27 23:37:06,994 INFO L506 BasicCegarLoop]: Found error trace [2021-12-27 23:37:06,995 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-27 23:37:07,014 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-12-27 23:37:07,207 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-27 23:37:07,207 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-27 23:37:07,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-27 23:37:07,208 INFO L85 PathProgramCache]: Analyzing trace with hash 1009660131, now seen corresponding path program 1 times [2021-12-27 23:37:07,209 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-27 23:37:07,209 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [456481423] [2021-12-27 23:37:07,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-27 23:37:07,209 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-27 23:37:07,209 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-27 23:37:07,210 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) [2021-12-27 23:37:07,212 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-12-27 23:37:07,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-27 23:37:07,342 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-27 23:37:07,343 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-27 23:37:07,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-27 23:37:07,691 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-27 23:37:07,691 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-27 23:37:07,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [456481423] [2021-12-27 23:37:07,691 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [456481423] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-27 23:37:07,691 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-27 23:37:07,691 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-27 23:37:07,692 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560399078] [2021-12-27 23:37:07,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-27 23:37:07,692 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-27 23:37:07,693 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-27 23:37:07,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-27 23:37:07,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-27 23:37:07,693 INFO L87 Difference]: Start difference. First operand 45 states and 60 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 23:37:08,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-27 23:37:08,058 INFO L93 Difference]: Finished difference Result 83 states and 112 transitions. [2021-12-27 23:37:08,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-27 23:37:08,059 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-12-27 23:37:08,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-27 23:37:08,059 INFO L225 Difference]: With dead ends: 83 [2021-12-27 23:37:08,060 INFO L226 Difference]: Without dead ends: 45 [2021-12-27 23:37:08,060 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-27 23:37:08,061 INFO L933 BasicCegarLoop]: 60 mSDtfsCounter, 0 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-27 23:37:08,061 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 115 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-27 23:37:08,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2021-12-27 23:37:08,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2021-12-27 23:37:08,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 44 states have (on average 1.3409090909090908) internal successors, (59), 44 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 23:37:08,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 59 transitions. [2021-12-27 23:37:08,065 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 59 transitions. Word has length 13 [2021-12-27 23:37:08,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-27 23:37:08,065 INFO L470 AbstractCegarLoop]: Abstraction has 45 states and 59 transitions. [2021-12-27 23:37:08,065 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 23:37:08,065 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 59 transitions. [2021-12-27 23:37:08,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-12-27 23:37:08,066 INFO L506 BasicCegarLoop]: Found error trace [2021-12-27 23:37:08,066 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-27 23:37:08,076 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-12-27 23:37:08,266 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-27 23:37:08,267 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-27 23:37:08,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-27 23:37:08,268 INFO L85 PathProgramCache]: Analyzing trace with hash 34829304, now seen corresponding path program 1 times [2021-12-27 23:37:08,268 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-27 23:37:08,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [182223198] [2021-12-27 23:37:08,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-27 23:37:08,269 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-27 23:37:08,269 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-27 23:37:08,270 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) [2021-12-27 23:37:08,272 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-12-27 23:37:08,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-27 23:37:08,400 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-27 23:37:08,402 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-27 23:37:10,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-27 23:37:10,790 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-27 23:37:10,790 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-27 23:37:10,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [182223198] [2021-12-27 23:37:10,790 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [182223198] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-27 23:37:10,790 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-27 23:37:10,790 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-27 23:37:10,790 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567562978] [2021-12-27 23:37:10,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-27 23:37:10,791 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-27 23:37:10,791 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-27 23:37:10,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-27 23:37:10,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-27 23:37:10,791 INFO L87 Difference]: Start difference. First operand 45 states and 59 transitions. Second operand has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 23:37:10,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-27 23:37:10,800 INFO L93 Difference]: Finished difference Result 74 states and 99 transitions. [2021-12-27 23:37:10,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-27 23:37:10,801 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-12-27 23:37:10,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-27 23:37:10,801 INFO L225 Difference]: With dead ends: 74 [2021-12-27 23:37:10,802 INFO L226 Difference]: Without dead ends: 45 [2021-12-27 23:37:10,802 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-27 23:37:10,803 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 0 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 247 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 20 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-27 23:37:10,803 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 247 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 20 Unchecked, 0.0s Time] [2021-12-27 23:37:10,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2021-12-27 23:37:10,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2021-12-27 23:37:10,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 44 states have (on average 1.3181818181818181) internal successors, (58), 44 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 23:37:10,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 58 transitions. [2021-12-27 23:37:10,808 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 58 transitions. Word has length 17 [2021-12-27 23:37:10,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-27 23:37:10,808 INFO L470 AbstractCegarLoop]: Abstraction has 45 states and 58 transitions. [2021-12-27 23:37:10,808 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 23:37:10,808 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 58 transitions. [2021-12-27 23:37:10,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-12-27 23:37:10,809 INFO L506 BasicCegarLoop]: Found error trace [2021-12-27 23:37:10,809 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-27 23:37:10,819 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-12-27 23:37:11,019 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-27 23:37:11,020 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-27 23:37:11,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-27 23:37:11,020 INFO L85 PathProgramCache]: Analyzing trace with hash -675358345, now seen corresponding path program 1 times [2021-12-27 23:37:11,021 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-27 23:37:11,021 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [932187210] [2021-12-27 23:37:11,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-27 23:37:11,021 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-27 23:37:11,021 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-27 23:37:11,022 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) [2021-12-27 23:37:11,023 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-12-27 23:37:11,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-27 23:37:11,883 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 12 conjunts are in the unsatisfiable core [2021-12-27 23:37:11,885 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-27 23:37:13,420 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2021-12-27 23:37:14,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-27 23:37:14,568 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-27 23:37:14,568 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-27 23:37:14,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [932187210] [2021-12-27 23:37:14,568 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [932187210] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-27 23:37:14,568 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-27 23:37:14,568 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-27 23:37:14,568 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078631932] [2021-12-27 23:37:14,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-27 23:37:14,569 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-27 23:37:14,569 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-27 23:37:14,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-27 23:37:14,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-27 23:37:14,570 INFO L87 Difference]: Start difference. First operand 45 states and 58 transitions. Second operand has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 23:37:14,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-27 23:37:14,576 INFO L93 Difference]: Finished difference Result 50 states and 62 transitions. [2021-12-27 23:37:14,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-27 23:37:14,577 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-12-27 23:37:14,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-27 23:37:14,577 INFO L225 Difference]: With dead ends: 50 [2021-12-27 23:37:14,577 INFO L226 Difference]: Without dead ends: 45 [2021-12-27 23:37:14,578 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-27 23:37:14,578 INFO L933 BasicCegarLoop]: 52 mSDtfsCounter, 0 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 239 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 19 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-27 23:37:14,579 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 239 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 19 Unchecked, 0.0s Time] [2021-12-27 23:37:14,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2021-12-27 23:37:14,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2021-12-27 23:37:14,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 44 states have (on average 1.2954545454545454) internal successors, (57), 44 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 23:37:14,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 57 transitions. [2021-12-27 23:37:14,582 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 57 transitions. Word has length 17 [2021-12-27 23:37:14,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-27 23:37:14,582 INFO L470 AbstractCegarLoop]: Abstraction has 45 states and 57 transitions. [2021-12-27 23:37:14,583 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 23:37:14,583 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 57 transitions. [2021-12-27 23:37:14,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-12-27 23:37:14,583 INFO L506 BasicCegarLoop]: Found error trace [2021-12-27 23:37:14,583 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-27 23:37:14,608 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2021-12-27 23:37:14,791 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-27 23:37:14,792 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-27 23:37:14,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-27 23:37:14,792 INFO L85 PathProgramCache]: Analyzing trace with hash 473095487, now seen corresponding path program 1 times [2021-12-27 23:37:14,793 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-27 23:37:14,793 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2089373290] [2021-12-27 23:37:14,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-27 23:37:14,793 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-27 23:37:14,793 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-27 23:37:14,795 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) [2021-12-27 23:37:14,797 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-12-27 23:37:15,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-27 23:37:15,836 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-27 23:37:15,838 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-27 23:37:18,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-27 23:37:18,417 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-27 23:37:18,417 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-27 23:37:18,417 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2089373290] [2021-12-27 23:37:18,417 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2089373290] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-27 23:37:18,417 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-27 23:37:18,417 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-27 23:37:18,417 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216730366] [2021-12-27 23:37:18,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-27 23:37:18,418 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-27 23:37:18,418 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-27 23:37:18,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-27 23:37:18,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-27 23:37:18,418 INFO L87 Difference]: Start difference. First operand 45 states and 57 transitions. Second operand has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-27 23:37:19,773 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-27 23:37:22,803 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-27 23:37:26,370 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.53s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-27 23:37:29,013 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.29s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-27 23:37:31,721 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.71s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-27 23:37:33,993 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.27s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-27 23:37:37,559 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.43s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-27 23:37:40,353 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.79s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-27 23:37:42,564 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.21s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-27 23:37:44,812 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.25s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-27 23:37:47,290 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.23s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-27 23:37:49,547 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.26s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-27 23:37:51,945 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.40s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []