./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-newlib/double_req_bl_1130a.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e19ca921 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_1130a.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 23d3becec5645fa497625df98df84137049a5fde6a7d2da6a420cf3c624fd037 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-e19ca92 [2021-12-22 10:17:10,262 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-22 10:17:10,264 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-22 10:17:10,336 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-22 10:17:10,337 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-22 10:17:10,340 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-22 10:17:10,341 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-22 10:17:10,346 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-22 10:17:10,348 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-22 10:17:10,352 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-22 10:17:10,353 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-22 10:17:10,355 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-22 10:17:10,356 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-22 10:17:10,358 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-22 10:17:10,359 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-22 10:17:10,362 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-22 10:17:10,363 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-22 10:17:10,364 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-22 10:17:10,366 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-22 10:17:10,372 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-22 10:17:10,374 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-22 10:17:10,375 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-22 10:17:10,376 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-22 10:17:10,377 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-22 10:17:10,383 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-22 10:17:10,384 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-22 10:17:10,384 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-22 10:17:10,385 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-22 10:17:10,386 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-22 10:17:10,387 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-22 10:17:10,387 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-22 10:17:10,388 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-22 10:17:10,389 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-22 10:17:10,390 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-22 10:17:10,393 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-22 10:17:10,393 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-22 10:17:10,393 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-22 10:17:10,394 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-22 10:17:10,394 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-22 10:17:10,395 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-22 10:17:10,395 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-22 10:17:10,396 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-22 10:17:10,435 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-22 10:17:10,436 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-22 10:17:10,436 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-22 10:17:10,436 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-22 10:17:10,437 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-22 10:17:10,437 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-22 10:17:10,438 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-22 10:17:10,438 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-22 10:17:10,438 INFO L138 SettingsManager]: * Use SBE=true [2021-12-22 10:17:10,439 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-22 10:17:10,440 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-22 10:17:10,440 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-22 10:17:10,440 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-22 10:17:10,440 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-22 10:17:10,441 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-22 10:17:10,441 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-22 10:17:10,441 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-22 10:17:10,441 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-22 10:17:10,441 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-22 10:17:10,442 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-22 10:17:10,442 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-22 10:17:10,442 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-22 10:17:10,442 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-22 10:17:10,443 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-22 10:17:10,443 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 10:17:10,443 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-22 10:17:10,443 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-22 10:17:10,443 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-22 10:17:10,444 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-22 10:17:10,444 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-22 10:17:10,444 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-22 10:17:10,444 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-22 10:17:10,445 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-22 10:17:10,445 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-22 10:17:10,445 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 23d3becec5645fa497625df98df84137049a5fde6a7d2da6a420cf3c624fd037 [2021-12-22 10:17:10,712 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-22 10:17:10,738 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-22 10:17:10,740 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-22 10:17:10,741 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-22 10:17:10,742 INFO L275 PluginConnector]: CDTParser initialized [2021-12-22 10:17:10,743 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_1130a.c [2021-12-22 10:17:10,826 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1a83ee01a/4d44378be9d64f258eecad2d60028142/FLAG2e5b9b743 [2021-12-22 10:17:11,289 INFO L306 CDTParser]: Found 1 translation units. [2021-12-22 10:17:11,290 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1130a.c [2021-12-22 10:17:11,297 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1a83ee01a/4d44378be9d64f258eecad2d60028142/FLAG2e5b9b743 [2021-12-22 10:17:11,785 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1a83ee01a/4d44378be9d64f258eecad2d60028142 [2021-12-22 10:17:11,787 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-22 10:17:11,788 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-22 10:17:11,789 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-22 10:17:11,790 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-22 10:17:11,796 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-22 10:17:11,797 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 10:17:11" (1/1) ... [2021-12-22 10:17:11,797 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4341ca5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:17:11, skipping insertion in model container [2021-12-22 10:17:11,798 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 10:17:11" (1/1) ... [2021-12-22 10:17:11,802 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-22 10:17:11,819 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-22 10:17:12,013 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_1130a.c[4166,4179] [2021-12-22 10:17:12,016 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 10:17:12,022 INFO L203 MainTranslator]: Completed pre-run [2021-12-22 10:17:12,067 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_1130a.c[4166,4179] [2021-12-22 10:17:12,068 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 10:17:12,080 INFO L208 MainTranslator]: Completed translation [2021-12-22 10:17:12,081 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:17:12 WrapperNode [2021-12-22 10:17:12,081 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-22 10:17:12,082 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-22 10:17:12,082 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-22 10:17:12,082 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-22 10:17:12,089 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:17:12" (1/1) ... [2021-12-22 10:17:12,099 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:17:12" (1/1) ... [2021-12-22 10:17:12,125 INFO L137 Inliner]: procedures = 19, calls = 39, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 242 [2021-12-22 10:17:12,130 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-22 10:17:12,131 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-22 10:17:12,131 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-22 10:17:12,131 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-22 10:17:12,137 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:17:12" (1/1) ... [2021-12-22 10:17:12,137 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:17:12" (1/1) ... [2021-12-22 10:17:12,141 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:17:12" (1/1) ... [2021-12-22 10:17:12,141 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:17:12" (1/1) ... [2021-12-22 10:17:12,157 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:17:12" (1/1) ... [2021-12-22 10:17:12,179 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:17:12" (1/1) ... [2021-12-22 10:17:12,183 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:17:12" (1/1) ... [2021-12-22 10:17:12,186 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-22 10:17:12,187 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-22 10:17:12,187 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-22 10:17:12,187 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-22 10:17:12,188 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:17:12" (1/1) ... [2021-12-22 10:17:12,200 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 10:17:12,212 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 10:17:12,233 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) [2021-12-22 10:17:12,242 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 [2021-12-22 10:17:12,270 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-22 10:17:12,270 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-22 10:17:12,271 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-22 10:17:12,271 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-22 10:17:12,271 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-12-22 10:17:12,271 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-12-22 10:17:12,274 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-22 10:17:12,275 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-22 10:17:12,275 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-22 10:17:12,275 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2021-12-22 10:17:12,275 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-22 10:17:12,378 INFO L234 CfgBuilder]: Building ICFG [2021-12-22 10:17:12,379 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-22 10:17:12,712 INFO L275 CfgBuilder]: Performing block encoding [2021-12-22 10:17:12,718 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-22 10:17:12,718 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2021-12-22 10:17:12,720 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 10:17:12 BoogieIcfgContainer [2021-12-22 10:17:12,720 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-22 10:17:12,722 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-22 10:17:12,722 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-22 10:17:12,725 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-22 10:17:12,726 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 10:17:11" (1/3) ... [2021-12-22 10:17:12,726 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57b670f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 10:17:12, skipping insertion in model container [2021-12-22 10:17:12,726 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:17:12" (2/3) ... [2021-12-22 10:17:12,727 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57b670f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 10:17:12, skipping insertion in model container [2021-12-22 10:17:12,727 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 10:17:12" (3/3) ... [2021-12-22 10:17:12,728 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1130a.c [2021-12-22 10:17:12,733 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-22 10:17:12,733 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-22 10:17:12,770 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-22 10:17:12,776 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 [2021-12-22 10:17:12,776 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-22 10:17:12,790 INFO L276 IsEmpty]: Start isEmpty. Operand has 61 states, 59 states have (on average 1.7966101694915255) internal successors, (106), 60 states have internal predecessors, (106), 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) [2021-12-22 10:17:12,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-12-22 10:17:12,795 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 10:17:12,796 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 10:17:12,796 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 10:17:12,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 10:17:12,801 INFO L85 PathProgramCache]: Analyzing trace with hash 464220005, now seen corresponding path program 1 times [2021-12-22 10:17:12,809 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 10:17:12,809 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599184773] [2021-12-22 10:17:12,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 10:17:12,810 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 10:17:12,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 10:17:12,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 10:17:12,945 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 10:17:12,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599184773] [2021-12-22 10:17:12,946 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1599184773] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 10:17:12,946 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 10:17:12,947 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-22 10:17:12,948 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070674279] [2021-12-22 10:17:12,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 10:17:12,951 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-22 10:17:12,951 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 10:17:12,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-22 10:17:12,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-22 10:17:12,975 INFO L87 Difference]: Start difference. First operand has 61 states, 59 states have (on average 1.7966101694915255) internal successors, (106), 60 states have internal predecessors, (106), 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 5.5) internal successors, (11), 2 states have internal predecessors, (11), 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) [2021-12-22 10:17:13,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 10:17:13,000 INFO L93 Difference]: Finished difference Result 119 states and 208 transitions. [2021-12-22 10:17:13,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-22 10:17:13,002 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 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 11 [2021-12-22 10:17:13,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 10:17:13,008 INFO L225 Difference]: With dead ends: 119 [2021-12-22 10:17:13,008 INFO L226 Difference]: Without dead ends: 57 [2021-12-22 10:17:13,010 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 [2021-12-22 10:17:13,013 INFO L933 BasicCegarLoop]: 89 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, 89 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 [2021-12-22 10:17:13,014 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 10:17:13,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2021-12-22 10:17:13,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2021-12-22 10:17:13,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 56 states have (on average 1.5) internal successors, (84), 56 states have internal predecessors, (84), 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) [2021-12-22 10:17:13,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 84 transitions. [2021-12-22 10:17:13,040 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 84 transitions. Word has length 11 [2021-12-22 10:17:13,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 10:17:13,040 INFO L470 AbstractCegarLoop]: Abstraction has 57 states and 84 transitions. [2021-12-22 10:17:13,040 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 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) [2021-12-22 10:17:13,040 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 84 transitions. [2021-12-22 10:17:13,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-12-22 10:17:13,041 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 10:17:13,041 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 10:17:13,041 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-22 10:17:13,042 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 10:17:13,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 10:17:13,043 INFO L85 PathProgramCache]: Analyzing trace with hash 1051323842, now seen corresponding path program 1 times [2021-12-22 10:17:13,043 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 10:17:13,043 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492161628] [2021-12-22 10:17:13,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 10:17:13,044 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 10:17:13,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 10:17:13,102 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-22 10:17:13,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-22 10:17:13,168 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-22 10:17:13,169 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-22 10:17:13,170 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-22 10:17:13,172 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-22 10:17:13,175 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-12-22 10:17:13,185 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-22 10:17:13,233 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 10:17:13 BoogieIcfgContainer [2021-12-22 10:17:13,233 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-22 10:17:13,234 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-22 10:17:13,235 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-22 10:17:13,235 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-22 10:17:13,236 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 10:17:12" (3/4) ... [2021-12-22 10:17:13,238 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-12-22 10:17:13,239 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-22 10:17:13,240 INFO L158 Benchmark]: Toolchain (without parser) took 1451.21ms. Allocated memory was 86.0MB in the beginning and 121.6MB in the end (delta: 35.7MB). Free memory was 53.9MB in the beginning and 41.9MB in the end (delta: 12.0MB). Peak memory consumption was 45.7MB. Max. memory is 16.1GB. [2021-12-22 10:17:13,240 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 86.0MB. Free memory is still 43.0MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-22 10:17:13,244 INFO L158 Benchmark]: CACSL2BoogieTranslator took 291.85ms. Allocated memory was 86.0MB in the beginning and 121.6MB in the end (delta: 35.7MB). Free memory was 53.6MB in the beginning and 94.9MB in the end (delta: -41.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-22 10:17:13,245 INFO L158 Benchmark]: Boogie Procedure Inliner took 48.43ms. Allocated memory is still 121.6MB. Free memory was 94.9MB in the beginning and 92.8MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-22 10:17:13,248 INFO L158 Benchmark]: Boogie Preprocessor took 55.21ms. Allocated memory is still 121.6MB. Free memory was 92.8MB in the beginning and 90.8MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-22 10:17:13,249 INFO L158 Benchmark]: RCFGBuilder took 533.62ms. Allocated memory is still 121.6MB. Free memory was 90.1MB in the beginning and 71.3MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2021-12-22 10:17:13,249 INFO L158 Benchmark]: TraceAbstraction took 511.28ms. Allocated memory is still 121.6MB. Free memory was 71.1MB in the beginning and 41.9MB in the end (delta: 29.2MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. [2021-12-22 10:17:13,249 INFO L158 Benchmark]: Witness Printer took 4.45ms. Allocated memory is still 121.6MB. Free memory is still 41.9MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-22 10:17:13,255 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 86.0MB. Free memory is still 43.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 291.85ms. Allocated memory was 86.0MB in the beginning and 121.6MB in the end (delta: 35.7MB). Free memory was 53.6MB in the beginning and 94.9MB in the end (delta: -41.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 48.43ms. Allocated memory is still 121.6MB. Free memory was 94.9MB in the beginning and 92.8MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 55.21ms. Allocated memory is still 121.6MB. Free memory was 92.8MB in the beginning and 90.8MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 533.62ms. Allocated memory is still 121.6MB. Free memory was 90.1MB in the beginning and 71.3MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 511.28ms. Allocated memory is still 121.6MB. Free memory was 71.1MB in the beginning and 41.9MB in the end (delta: 29.2MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. * Witness Printer took 4.45ms. Allocated memory is still 121.6MB. Free memory is still 41.9MB. 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: 193]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseOr at line 46, overapproximation of someUnaryDOUBLEoperation at line 22, overapproximation of bitwiseAnd at line 41, overapproximation of someBinaryArithmeticDOUBLEoperation at line 47, overapproximation of someBinaryDOUBLEComparisonOperation at line 192, overapproximation of bitwiseXor at line 42. Possible FailurePath: [L20-L23] static const double one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; VAL [one_fmod=1, Zero_fmod={4:0}] [L184] double x = 0.0; [L185] double y = __VERIFIER_nondet_double(); [L187] COND TRUE y < 0.0 || y > 0.0 [L189] CALL, EXPR fmod_double(x, y) [L26] __int32_t n, hx, hy, hz, ix, iy, sx, i; [L27] __uint32_t lx, ly, lz; VAL [\old(x)=0, \old(y)=8589934591, one_fmod=1, x=0, y=8589934591, Zero_fmod={4:0}] [L30] ieee_double_shape_type ew_u; [L31] ew_u.value = (x) [L32] EXPR ew_u.parts.msw [L32] (hx) = ew_u.parts.msw [L33] EXPR ew_u.parts.lsw [L33] (lx) = ew_u.parts.lsw [L36] ieee_double_shape_type ew_u; [L37] ew_u.value = (y) [L38] EXPR ew_u.parts.msw [L38] (hy) = ew_u.parts.msw [L39] EXPR ew_u.parts.lsw [L39] (ly) = ew_u.parts.lsw [L41] sx = hx & 0x80000000 [L42] hx ^= sx [L43] hy &= 0x7fffffff VAL [\old(x)=0, \old(y)=8589934591, lx=8589934592, ly=8589934593, one_fmod=1, sx=-1, x=0, y=8589934591, Zero_fmod={4:0}] [L45-L46] COND TRUE (hy | ly) == 0 || (hx >= 0x7ff00000) || ((hy | ((ly | -ly) >> 31)) > 0x7ff00000) [L47] return (x * y) / (x * y); VAL [\old(x)=0, \old(y)=8589934591, hx=2146435072, lx=8589934592, ly=8589934593, one_fmod=1, sx=-1, x=0, y=8589934591, Zero_fmod={4:0}] [L189] RET, EXPR fmod_double(x, y) [L189] double res = fmod_double(x, y); [L192] EXPR res == 0.0 && __signbit_double(res) == 0 VAL [one_fmod=1, res=8589934594, res == 0.0 && __signbit_double(res) == 0=0, x=0, y=8589934591, Zero_fmod={4:0}] [L192] COND TRUE !(res == 0.0 && __signbit_double(res) == 0) [L193] reach_error() VAL [one_fmod=1, res=8589934594, x=0, y=8589934591, Zero_fmod={4:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 61 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.4s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 89 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 0 IncrementalHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 89 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=61occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 24 NumberOfCodeBlocks, 24 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 10 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-12-22 10:17:13,299 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_1130a.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 23d3becec5645fa497625df98df84137049a5fde6a7d2da6a420cf3c624fd037 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-e19ca92 [2021-12-22 10:17:15,293 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-22 10:17:15,296 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-22 10:17:15,333 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-22 10:17:15,334 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-22 10:17:15,337 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-22 10:17:15,339 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-22 10:17:15,344 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-22 10:17:15,346 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-22 10:17:15,350 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-22 10:17:15,352 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-22 10:17:15,355 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-22 10:17:15,355 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-22 10:17:15,356 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-22 10:17:15,357 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-22 10:17:15,358 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-22 10:17:15,358 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-22 10:17:15,359 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-22 10:17:15,360 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-22 10:17:15,361 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-22 10:17:15,362 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-22 10:17:15,363 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-22 10:17:15,364 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-22 10:17:15,365 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-22 10:17:15,367 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-22 10:17:15,367 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-22 10:17:15,367 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-22 10:17:15,368 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-22 10:17:15,369 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-22 10:17:15,369 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-22 10:17:15,370 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-22 10:17:15,370 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-22 10:17:15,371 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-22 10:17:15,372 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-22 10:17:15,372 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-22 10:17:15,373 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-22 10:17:15,373 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-22 10:17:15,374 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-22 10:17:15,374 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-22 10:17:15,375 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-22 10:17:15,375 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-22 10:17:15,380 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-12-22 10:17:15,417 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-22 10:17:15,418 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-22 10:17:15,419 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-22 10:17:15,419 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-22 10:17:15,420 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-22 10:17:15,420 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-22 10:17:15,421 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-22 10:17:15,422 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-22 10:17:15,422 INFO L138 SettingsManager]: * Use SBE=true [2021-12-22 10:17:15,422 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-22 10:17:15,423 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-22 10:17:15,423 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-22 10:17:15,423 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-22 10:17:15,423 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-22 10:17:15,423 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-22 10:17:15,424 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-22 10:17:15,424 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-22 10:17:15,424 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-22 10:17:15,424 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-22 10:17:15,424 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-22 10:17:15,425 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-22 10:17:15,425 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-22 10:17:15,425 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-22 10:17:15,425 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-22 10:17:15,425 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-22 10:17:15,426 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-22 10:17:15,436 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 10:17:15,436 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-22 10:17:15,436 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-22 10:17:15,437 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-22 10:17:15,437 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-22 10:17:15,437 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-22 10:17:15,437 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-22 10:17:15,438 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-22 10:17:15,438 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-22 10:17:15,438 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-22 10:17:15,438 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-22 10:17:15,438 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 23d3becec5645fa497625df98df84137049a5fde6a7d2da6a420cf3c624fd037 [2021-12-22 10:17:15,760 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-22 10:17:15,777 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-22 10:17:15,780 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-22 10:17:15,781 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-22 10:17:15,781 INFO L275 PluginConnector]: CDTParser initialized [2021-12-22 10:17:15,782 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_1130a.c [2021-12-22 10:17:15,845 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/20e31e6de/c06a4e5675c9434d8fe66edd3bc40ade/FLAGc1b29284f [2021-12-22 10:17:16,341 INFO L306 CDTParser]: Found 1 translation units. [2021-12-22 10:17:16,352 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1130a.c [2021-12-22 10:17:16,371 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/20e31e6de/c06a4e5675c9434d8fe66edd3bc40ade/FLAGc1b29284f [2021-12-22 10:17:16,714 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/20e31e6de/c06a4e5675c9434d8fe66edd3bc40ade [2021-12-22 10:17:16,716 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-22 10:17:16,718 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-22 10:17:16,719 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-22 10:17:16,719 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-22 10:17:16,726 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-22 10:17:16,727 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 10:17:16" (1/1) ... [2021-12-22 10:17:16,731 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1881f845 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:17:16, skipping insertion in model container [2021-12-22 10:17:16,732 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 10:17:16" (1/1) ... [2021-12-22 10:17:16,739 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-22 10:17:16,772 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-22 10:17:16,982 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_1130a.c[4166,4179] [2021-12-22 10:17:16,993 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 10:17:17,002 INFO L203 MainTranslator]: Completed pre-run [2021-12-22 10:17:17,038 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_1130a.c[4166,4179] [2021-12-22 10:17:17,039 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 10:17:17,054 INFO L208 MainTranslator]: Completed translation [2021-12-22 10:17:17,054 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:17:17 WrapperNode [2021-12-22 10:17:17,055 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-22 10:17:17,056 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-22 10:17:17,056 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-22 10:17:17,056 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-22 10:17:17,062 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:17:17" (1/1) ... [2021-12-22 10:17:17,073 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:17:17" (1/1) ... [2021-12-22 10:17:17,097 INFO L137 Inliner]: procedures = 22, calls = 39, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 242 [2021-12-22 10:17:17,098 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-22 10:17:17,099 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-22 10:17:17,099 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-22 10:17:17,099 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-22 10:17:17,109 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:17:17" (1/1) ... [2021-12-22 10:17:17,109 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:17:17" (1/1) ... [2021-12-22 10:17:17,113 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:17:17" (1/1) ... [2021-12-22 10:17:17,114 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:17:17" (1/1) ... [2021-12-22 10:17:17,124 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:17:17" (1/1) ... [2021-12-22 10:17:17,131 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:17:17" (1/1) ... [2021-12-22 10:17:17,134 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:17:17" (1/1) ... [2021-12-22 10:17:17,146 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-22 10:17:17,151 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-22 10:17:17,152 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-22 10:17:17,152 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-22 10:17:17,153 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:17:17" (1/1) ... [2021-12-22 10:17:17,159 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 10:17:17,169 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 10:17:17,183 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) [2021-12-22 10:17:17,192 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 [2021-12-22 10:17:17,222 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-22 10:17:17,222 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2021-12-22 10:17:17,222 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2021-12-22 10:17:17,222 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-22 10:17:17,222 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-22 10:17:17,223 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8 [2021-12-22 10:17:17,223 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-12-22 10:17:17,224 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-22 10:17:17,224 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-22 10:17:17,224 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-12-22 10:17:17,224 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-22 10:17:17,342 INFO L234 CfgBuilder]: Building ICFG [2021-12-22 10:17:17,359 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-22 10:17:21,071 INFO L275 CfgBuilder]: Performing block encoding [2021-12-22 10:17:21,081 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-22 10:17:21,082 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2021-12-22 10:17:21,083 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 10:17:21 BoogieIcfgContainer [2021-12-22 10:17:21,084 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-22 10:17:21,085 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-22 10:17:21,085 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-22 10:17:21,088 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-22 10:17:21,088 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 10:17:16" (1/3) ... [2021-12-22 10:17:21,089 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49303c03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 10:17:21, skipping insertion in model container [2021-12-22 10:17:21,089 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 10:17:17" (2/3) ... [2021-12-22 10:17:21,089 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49303c03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 10:17:21, skipping insertion in model container [2021-12-22 10:17:21,089 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 10:17:21" (3/3) ... [2021-12-22 10:17:21,091 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1130a.c [2021-12-22 10:17:21,095 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-22 10:17:21,095 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-22 10:17:21,135 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-22 10:17:21,141 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 [2021-12-22 10:17:21,141 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-22 10:17:21,166 INFO L276 IsEmpty]: Start isEmpty. Operand has 61 states, 59 states have (on average 1.7966101694915255) internal successors, (106), 60 states have internal predecessors, (106), 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) [2021-12-22 10:17:21,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-12-22 10:17:21,171 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 10:17:21,172 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 10:17:21,174 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 10:17:21,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 10:17:21,183 INFO L85 PathProgramCache]: Analyzing trace with hash 464220005, now seen corresponding path program 1 times [2021-12-22 10:17:21,194 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-22 10:17:21,195 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [282151194] [2021-12-22 10:17:21,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 10:17:21,196 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-22 10:17:21,196 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-22 10:17:21,201 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) [2021-12-22 10:17:21,202 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-12-22 10:17:22,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 10:17:22,097 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 1 conjunts are in the unsatisfiable core [2021-12-22 10:17:22,101 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 10:17:22,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 10:17:22,216 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 10:17:22,216 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-22 10:17:22,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [282151194] [2021-12-22 10:17:22,217 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [282151194] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 10:17:22,217 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 10:17:22,217 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-22 10:17:22,219 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049921472] [2021-12-22 10:17:22,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 10:17:22,222 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-22 10:17:22,222 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-22 10:17:22,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-22 10:17:22,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-22 10:17:22,246 INFO L87 Difference]: Start difference. First operand has 61 states, 59 states have (on average 1.7966101694915255) internal successors, (106), 60 states have internal predecessors, (106), 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 5.5) internal successors, (11), 2 states have internal predecessors, (11), 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) [2021-12-22 10:17:22,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 10:17:22,264 INFO L93 Difference]: Finished difference Result 119 states and 208 transitions. [2021-12-22 10:17:22,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-22 10:17:22,267 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 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 11 [2021-12-22 10:17:22,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 10:17:22,273 INFO L225 Difference]: With dead ends: 119 [2021-12-22 10:17:22,273 INFO L226 Difference]: Without dead ends: 57 [2021-12-22 10:17:22,275 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-22 10:17:22,278 INFO L933 BasicCegarLoop]: 89 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, 89 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 [2021-12-22 10:17:22,279 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 10:17:22,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2021-12-22 10:17:22,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2021-12-22 10:17:22,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 56 states have (on average 1.5) internal successors, (84), 56 states have internal predecessors, (84), 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) [2021-12-22 10:17:22,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 84 transitions. [2021-12-22 10:17:22,310 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 84 transitions. Word has length 11 [2021-12-22 10:17:22,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 10:17:22,310 INFO L470 AbstractCegarLoop]: Abstraction has 57 states and 84 transitions. [2021-12-22 10:17:22,310 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 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) [2021-12-22 10:17:22,311 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 84 transitions. [2021-12-22 10:17:22,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-12-22 10:17:22,311 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 10:17:22,311 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 10:17:22,337 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-12-22 10:17:22,521 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-22 10:17:22,522 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 10:17:22,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 10:17:22,522 INFO L85 PathProgramCache]: Analyzing trace with hash 1051323842, now seen corresponding path program 1 times [2021-12-22 10:17:22,523 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-22 10:17:22,523 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2045901993] [2021-12-22 10:17:22,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 10:17:22,524 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-22 10:17:22,524 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-22 10:17:22,525 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) [2021-12-22 10:17:22,535 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-12-22 10:17:23,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 10:17:23,390 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 22 conjunts are in the unsatisfiable core [2021-12-22 10:17:23,398 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 10:17:23,878 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 16 [2021-12-22 10:17:24,766 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-22 10:17:24,767 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 33 [2021-12-22 10:17:25,163 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 12 treesize of output 8 [2021-12-22 10:17:30,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 10:17:30,655 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 10:17:30,655 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-22 10:17:30,655 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2045901993] [2021-12-22 10:17:30,655 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2045901993] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 10:17:30,655 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 10:17:30,656 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 10:17:30,656 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179496497] [2021-12-22 10:17:30,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 10:17:30,657 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 10:17:30,657 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-22 10:17:30,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 10:17:30,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=29, Unknown=2, NotChecked=0, Total=42 [2021-12-22 10:17:30,658 INFO L87 Difference]: Start difference. First operand 57 states and 84 transitions. Second operand has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 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) [2021-12-22 10:17:33,333 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-22 10:17:33,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 10:17:33,333 INFO L93 Difference]: Finished difference Result 66 states and 93 transitions. [2021-12-22 10:17:33,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-22 10:17:33,371 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 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 [2021-12-22 10:17:33,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 10:17:33,372 INFO L225 Difference]: With dead ends: 66 [2021-12-22 10:17:33,372 INFO L226 Difference]: Without dead ends: 57 [2021-12-22 10:17:33,373 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=21, Invalid=49, Unknown=2, NotChecked=0, Total=72 [2021-12-22 10:17:33,374 INFO L933 BasicCegarLoop]: 78 mSDtfsCounter, 5 mSDsluCounter, 272 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 350 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 116 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-12-22 10:17:33,374 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 350 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 1 Unknown, 116 Unchecked, 2.2s Time] [2021-12-22 10:17:33,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2021-12-22 10:17:33,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2021-12-22 10:17:33,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 56 states have (on average 1.4821428571428572) internal successors, (83), 56 states have internal predecessors, (83), 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) [2021-12-22 10:17:33,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 83 transitions. [2021-12-22 10:17:33,381 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 83 transitions. Word has length 13 [2021-12-22 10:17:33,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 10:17:33,381 INFO L470 AbstractCegarLoop]: Abstraction has 57 states and 83 transitions. [2021-12-22 10:17:33,381 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 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) [2021-12-22 10:17:33,382 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 83 transitions. [2021-12-22 10:17:33,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-12-22 10:17:33,382 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 10:17:33,382 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 10:17:33,406 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-12-22 10:17:33,584 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-22 10:17:33,584 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 10:17:33,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 10:17:33,585 INFO L85 PathProgramCache]: Analyzing trace with hash 734189607, now seen corresponding path program 1 times [2021-12-22 10:17:33,585 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-22 10:17:33,586 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [938194750] [2021-12-22 10:17:33,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 10:17:33,586 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-22 10:17:33,586 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-22 10:17:33,587 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) [2021-12-22 10:17:33,589 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-12-22 10:17:33,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 10:17:33,665 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-22 10:17:33,666 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 10:17:34,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 10:17:34,286 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 10:17:34,286 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-22 10:17:34,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [938194750] [2021-12-22 10:17:34,286 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [938194750] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 10:17:34,286 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 10:17:34,286 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-22 10:17:34,286 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538667482] [2021-12-22 10:17:34,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 10:17:34,287 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-22 10:17:34,287 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-22 10:17:34,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-22 10:17:34,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-22 10:17:34,288 INFO L87 Difference]: Start difference. First operand 57 states and 83 transitions. Second operand has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 10:17:37,162 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-22 10:17:37,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 10:17:37,313 INFO L93 Difference]: Finished difference Result 78 states and 103 transitions. [2021-12-22 10:17:37,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-22 10:17:37,313 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-12-22 10:17:37,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 10:17:37,314 INFO L225 Difference]: With dead ends: 78 [2021-12-22 10:17:37,314 INFO L226 Difference]: Without dead ends: 75 [2021-12-22 10:17:37,315 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-12-22 10:17:37,316 INFO L933 BasicCegarLoop]: 80 mSDtfsCounter, 187 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 187 SdHoareTripleChecker+Valid, 241 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-12-22 10:17:37,316 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [187 Valid, 241 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 24 Invalid, 1 Unknown, 0 Unchecked, 2.4s Time] [2021-12-22 10:17:37,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2021-12-22 10:17:37,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 59. [2021-12-22 10:17:37,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 58 states have (on average 1.4655172413793103) internal successors, (85), 58 states have internal predecessors, (85), 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) [2021-12-22 10:17:37,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 85 transitions. [2021-12-22 10:17:37,323 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 85 transitions. Word has length 15 [2021-12-22 10:17:37,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 10:17:37,324 INFO L470 AbstractCegarLoop]: Abstraction has 59 states and 85 transitions. [2021-12-22 10:17:37,324 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 10:17:37,324 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 85 transitions. [2021-12-22 10:17:37,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-12-22 10:17:37,325 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 10:17:37,325 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 10:17:37,343 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-12-22 10:17:37,541 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-22 10:17:37,542 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 10:17:37,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 10:17:37,543 INFO L85 PathProgramCache]: Analyzing trace with hash 1151454894, now seen corresponding path program 1 times [2021-12-22 10:17:37,543 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-22 10:17:37,543 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1334226031] [2021-12-22 10:17:37,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 10:17:37,544 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-22 10:17:37,544 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-22 10:17:37,545 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) [2021-12-22 10:17:37,547 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-12-22 10:17:37,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 10:17:37,657 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 16 conjunts are in the unsatisfiable core [2021-12-22 10:17:37,660 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 10:17:37,875 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 [2021-12-22 10:17:39,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 10:17:39,728 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 10:17:39,728 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-22 10:17:39,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1334226031] [2021-12-22 10:17:39,729 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1334226031] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 10:17:39,729 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 10:17:39,729 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-22 10:17:39,729 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741301472] [2021-12-22 10:17:39,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 10:17:39,729 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-22 10:17:39,730 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-22 10:17:39,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-22 10:17:39,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-12-22 10:17:39,730 INFO L87 Difference]: Start difference. First operand 59 states and 85 transitions. Second operand has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 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) [2021-12-22 10:17:41,714 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.57s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-22 10:17:41,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 10:17:41,715 INFO L93 Difference]: Finished difference Result 68 states and 94 transitions. [2021-12-22 10:17:41,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-22 10:17:41,747 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 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 16 [2021-12-22 10:17:41,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 10:17:41,747 INFO L225 Difference]: With dead ends: 68 [2021-12-22 10:17:41,747 INFO L226 Difference]: Without dead ends: 59 [2021-12-22 10:17:41,748 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-12-22 10:17:41,749 INFO L933 BasicCegarLoop]: 73 mSDtfsCounter, 9 mSDsluCounter, 269 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 342 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 98 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-12-22 10:17:41,749 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 342 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 98 Unchecked, 1.6s Time] [2021-12-22 10:17:41,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2021-12-22 10:17:41,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2021-12-22 10:17:41,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 58 states have (on average 1.4482758620689655) internal successors, (84), 58 states have internal predecessors, (84), 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) [2021-12-22 10:17:41,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 84 transitions. [2021-12-22 10:17:41,756 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 84 transitions. Word has length 16 [2021-12-22 10:17:41,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 10:17:41,757 INFO L470 AbstractCegarLoop]: Abstraction has 59 states and 84 transitions. [2021-12-22 10:17:41,757 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 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) [2021-12-22 10:17:41,757 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 84 transitions. [2021-12-22 10:17:41,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-12-22 10:17:41,758 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 10:17:41,758 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 10:17:41,775 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-12-22 10:17:41,958 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-22 10:17:41,958 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 10:17:41,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 10:17:41,959 INFO L85 PathProgramCache]: Analyzing trace with hash -1071102724, now seen corresponding path program 1 times [2021-12-22 10:17:41,959 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-22 10:17:41,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1102195030] [2021-12-22 10:17:41,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 10:17:41,960 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-22 10:17:41,960 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-22 10:17:41,961 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) [2021-12-22 10:17:41,963 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-12-22 10:17:42,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 10:17:42,051 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 16 conjunts are in the unsatisfiable core [2021-12-22 10:17:42,054 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 10:17:43,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 10:17:43,546 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 10:17:43,547 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-22 10:17:43,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1102195030] [2021-12-22 10:17:43,547 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1102195030] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 10:17:43,547 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 10:17:43,547 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-22 10:17:43,547 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572974853] [2021-12-22 10:17:43,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 10:17:43,548 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-22 10:17:43,548 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-22 10:17:43,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-22 10:17:43,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-22 10:17:43,548 INFO L87 Difference]: Start difference. First operand 59 states and 84 transitions. Second operand has 10 states, 10 states have (on average 1.9) internal successors, (19), 10 states have internal predecessors, (19), 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) [2021-12-22 10:17:47,351 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-22 10:17:47,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 10:17:47,514 INFO L93 Difference]: Finished difference Result 77 states and 100 transitions. [2021-12-22 10:17:47,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-22 10:17:47,514 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.9) internal successors, (19), 10 states have internal predecessors, (19), 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 19 [2021-12-22 10:17:47,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 10:17:47,515 INFO L225 Difference]: With dead ends: 77 [2021-12-22 10:17:47,515 INFO L226 Difference]: Without dead ends: 68 [2021-12-22 10:17:47,516 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=81, Invalid=225, Unknown=0, NotChecked=0, Total=306 [2021-12-22 10:17:47,516 INFO L933 BasicCegarLoop]: 74 mSDtfsCounter, 174 mSDsluCounter, 456 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 530 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 10 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2021-12-22 10:17:47,517 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [174 Valid, 530 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 48 Invalid, 1 Unknown, 10 Unchecked, 2.7s Time] [2021-12-22 10:17:47,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2021-12-22 10:17:47,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 57. [2021-12-22 10:17:47,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 56 states have (on average 1.4464285714285714) internal successors, (81), 56 states have internal predecessors, (81), 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) [2021-12-22 10:17:47,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 81 transitions. [2021-12-22 10:17:47,522 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 81 transitions. Word has length 19 [2021-12-22 10:17:47,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 10:17:47,523 INFO L470 AbstractCegarLoop]: Abstraction has 57 states and 81 transitions. [2021-12-22 10:17:47,523 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.9) internal successors, (19), 10 states have internal predecessors, (19), 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) [2021-12-22 10:17:47,523 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 81 transitions. [2021-12-22 10:17:47,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-12-22 10:17:47,524 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 10:17:47,524 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 10:17:47,533 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-12-22 10:17:47,725 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-22 10:17:47,726 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 10:17:47,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 10:17:47,726 INFO L85 PathProgramCache]: Analyzing trace with hash -2103758894, now seen corresponding path program 1 times [2021-12-22 10:17:47,727 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-22 10:17:47,727 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [10381183] [2021-12-22 10:17:47,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 10:17:47,727 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-22 10:17:47,727 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-22 10:17:47,728 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-22 10:17:47,730 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-12-22 10:17:47,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 10:17:47,797 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 12 conjunts are in the unsatisfiable core [2021-12-22 10:17:47,799 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 10:17:48,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 10:17:48,914 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 10:17:48,914 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-22 10:17:48,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [10381183] [2021-12-22 10:17:48,914 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [10381183] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 10:17:48,915 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 10:17:48,915 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-22 10:17:48,915 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238106554] [2021-12-22 10:17:48,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 10:17:48,915 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-22 10:17:48,915 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-22 10:17:48,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-22 10:17:48,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-22 10:17:48,916 INFO L87 Difference]: Start difference. First operand 57 states and 81 transitions. Second operand has 6 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 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) [2021-12-22 10:17:51,332 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-22 10:17:51,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 10:17:51,332 INFO L93 Difference]: Finished difference Result 102 states and 149 transitions. [2021-12-22 10:17:51,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-22 10:17:51,367 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 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 24 [2021-12-22 10:17:51,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 10:17:51,367 INFO L225 Difference]: With dead ends: 102 [2021-12-22 10:17:51,367 INFO L226 Difference]: Without dead ends: 57 [2021-12-22 10:17:51,368 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-12-22 10:17:51,369 INFO L933 BasicCegarLoop]: 75 mSDtfsCounter, 9 mSDsluCounter, 232 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 307 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 60 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-12-22 10:17:51,369 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 307 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 1 Unknown, 60 Unchecked, 2.1s Time] [2021-12-22 10:17:51,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2021-12-22 10:17:51,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2021-12-22 10:17:51,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 56 states have (on average 1.4285714285714286) internal successors, (80), 56 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) [2021-12-22 10:17:51,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 80 transitions. [2021-12-22 10:17:51,374 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 80 transitions. Word has length 24 [2021-12-22 10:17:51,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 10:17:51,374 INFO L470 AbstractCegarLoop]: Abstraction has 57 states and 80 transitions. [2021-12-22 10:17:51,375 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 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) [2021-12-22 10:17:51,375 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 80 transitions. [2021-12-22 10:17:51,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-12-22 10:17:51,376 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 10:17:51,376 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 10:17:51,385 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2021-12-22 10:17:51,577 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-22 10:17:51,578 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 10:17:51,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 10:17:51,578 INFO L85 PathProgramCache]: Analyzing trace with hash -1391759413, now seen corresponding path program 1 times [2021-12-22 10:17:51,579 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-22 10:17:51,579 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1401568871] [2021-12-22 10:17:51,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 10:17:51,579 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-22 10:17:51,579 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-22 10:17:51,580 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-22 10:17:51,581 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-12-22 10:17:51,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 10:17:51,663 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 11 conjunts are in the unsatisfiable core [2021-12-22 10:17:51,666 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 10:17:52,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 10:17:52,565 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 10:17:52,565 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-22 10:17:52,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1401568871] [2021-12-22 10:17:52,565 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1401568871] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 10:17:52,565 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 10:17:52,565 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-22 10:17:52,566 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224378059] [2021-12-22 10:17:52,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 10:17:52,566 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-22 10:17:52,566 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-22 10:17:52,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-22 10:17:52,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-22 10:17:52,567 INFO L87 Difference]: Start difference. First operand 57 states and 80 transitions. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 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) [2021-12-22 10:17:54,147 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-22 10:17:54,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 10:17:54,147 INFO L93 Difference]: Finished difference Result 96 states and 138 transitions. [2021-12-22 10:17:54,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-22 10:17:54,183 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 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 26 [2021-12-22 10:17:54,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 10:17:54,184 INFO L225 Difference]: With dead ends: 96 [2021-12-22 10:17:54,184 INFO L226 Difference]: Without dead ends: 57 [2021-12-22 10:17:54,184 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-22 10:17:54,185 INFO L933 BasicCegarLoop]: 72 mSDtfsCounter, 9 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 253 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 26 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-22 10:17:54,185 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 253 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 26 Unchecked, 1.4s Time] [2021-12-22 10:17:54,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2021-12-22 10:17:54,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2021-12-22 10:17:54,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 56 states have (on average 1.4107142857142858) internal successors, (79), 56 states have internal predecessors, (79), 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) [2021-12-22 10:17:54,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 79 transitions. [2021-12-22 10:17:54,193 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 79 transitions. Word has length 26 [2021-12-22 10:17:54,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 10:17:54,193 INFO L470 AbstractCegarLoop]: Abstraction has 57 states and 79 transitions. [2021-12-22 10:17:54,193 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 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) [2021-12-22 10:17:54,194 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 79 transitions. [2021-12-22 10:17:54,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-12-22 10:17:54,194 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 10:17:54,194 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 10:17:54,205 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2021-12-22 10:17:54,395 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-22 10:17:54,395 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 10:17:54,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 10:17:54,396 INFO L85 PathProgramCache]: Analyzing trace with hash -244554330, now seen corresponding path program 1 times [2021-12-22 10:17:54,396 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-22 10:17:54,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [343780527] [2021-12-22 10:17:54,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 10:17:54,396 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-22 10:17:54,397 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-22 10:17:54,397 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-22 10:17:54,398 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-12-22 10:17:54,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 10:17:54,470 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 11 conjunts are in the unsatisfiable core [2021-12-22 10:17:54,471 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 10:17:55,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 10:17:55,406 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 10:17:55,406 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-22 10:17:55,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [343780527] [2021-12-22 10:17:55,406 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [343780527] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 10:17:55,406 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 10:17:55,406 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-22 10:17:55,406 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892187693] [2021-12-22 10:17:55,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 10:17:55,406 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-22 10:17:55,407 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-22 10:17:55,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-22 10:17:55,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-22 10:17:55,407 INFO L87 Difference]: Start difference. First operand 57 states and 79 transitions. Second operand has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 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) [2021-12-22 10:17:57,101 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-22 10:17:57,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 10:17:57,101 INFO L93 Difference]: Finished difference Result 96 states and 137 transitions. [2021-12-22 10:17:57,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-22 10:17:57,138 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 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 28 [2021-12-22 10:17:57,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 10:17:57,138 INFO L225 Difference]: With dead ends: 96 [2021-12-22 10:17:57,138 INFO L226 Difference]: Without dead ends: 55 [2021-12-22 10:17:57,138 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-22 10:17:57,139 INFO L933 BasicCegarLoop]: 67 mSDtfsCounter, 9 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 235 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 25 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-12-22 10:17:57,139 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 235 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 25 Unchecked, 1.5s Time] [2021-12-22 10:17:57,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2021-12-22 10:17:57,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2021-12-22 10:17:57,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 54 states have (on average 1.3888888888888888) internal successors, (75), 54 states have internal predecessors, (75), 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) [2021-12-22 10:17:57,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 75 transitions. [2021-12-22 10:17:57,142 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 75 transitions. Word has length 28 [2021-12-22 10:17:57,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 10:17:57,143 INFO L470 AbstractCegarLoop]: Abstraction has 55 states and 75 transitions. [2021-12-22 10:17:57,143 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 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) [2021-12-22 10:17:57,143 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 75 transitions. [2021-12-22 10:17:57,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-12-22 10:17:57,143 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 10:17:57,144 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 10:17:57,154 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-12-22 10:17:57,347 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-22 10:17:57,348 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 10:17:57,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 10:17:57,348 INFO L85 PathProgramCache]: Analyzing trace with hash 1905417094, now seen corresponding path program 1 times [2021-12-22 10:17:57,349 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-22 10:17:57,349 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1219021359] [2021-12-22 10:17:57,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 10:17:57,349 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-22 10:17:57,349 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-22 10:17:57,350 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-22 10:17:57,352 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-12-22 10:17:57,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 10:17:57,437 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-22 10:17:57,438 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 10:17:57,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 10:17:57,697 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 10:17:57,697 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-22 10:17:57,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1219021359] [2021-12-22 10:17:57,697 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1219021359] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 10:17:57,697 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 10:17:57,697 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 10:17:57,697 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184303505] [2021-12-22 10:17:57,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 10:17:57,698 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 10:17:57,698 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-22 10:17:57,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 10:17:57,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 10:17:57,698 INFO L87 Difference]: Start difference. First operand 55 states and 75 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 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) [2021-12-22 10:17:57,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 10:17:57,792 INFO L93 Difference]: Finished difference Result 126 states and 179 transitions. [2021-12-22 10:17:57,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 10:17:57,792 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 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 28 [2021-12-22 10:17:57,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 10:17:57,793 INFO L225 Difference]: With dead ends: 126 [2021-12-22 10:17:57,793 INFO L226 Difference]: Without dead ends: 95 [2021-12-22 10:17:57,793 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 10:17:57,794 INFO L933 BasicCegarLoop]: 72 mSDtfsCounter, 56 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 10:17:57,794 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [56 Valid, 141 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 10:17:57,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2021-12-22 10:17:57,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 63. [2021-12-22 10:17:57,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 62 states have (on average 1.4193548387096775) internal successors, (88), 62 states have internal predecessors, (88), 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) [2021-12-22 10:17:57,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 88 transitions. [2021-12-22 10:17:57,799 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 88 transitions. Word has length 28 [2021-12-22 10:17:57,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 10:17:57,803 INFO L470 AbstractCegarLoop]: Abstraction has 63 states and 88 transitions. [2021-12-22 10:17:57,803 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 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) [2021-12-22 10:17:57,803 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 88 transitions. [2021-12-22 10:17:57,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-12-22 10:17:57,804 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 10:17:57,804 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 10:17:57,813 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-12-22 10:17:58,007 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-22 10:17:58,007 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 10:17:58,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 10:17:58,008 INFO L85 PathProgramCache]: Analyzing trace with hash -1604243380, now seen corresponding path program 1 times [2021-12-22 10:17:58,008 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-22 10:17:58,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1983213653] [2021-12-22 10:17:58,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 10:17:58,008 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-22 10:17:58,009 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-22 10:17:58,010 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-22 10:17:58,011 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-12-22 10:17:58,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 10:17:58,123 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 13 conjunts are in the unsatisfiable core [2021-12-22 10:17:58,125 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 10:17:59,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 10:17:59,884 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 10:17:59,884 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-22 10:17:59,885 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1983213653] [2021-12-22 10:17:59,885 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1983213653] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 10:17:59,885 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 10:17:59,885 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 10:17:59,885 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597150501] [2021-12-22 10:17:59,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 10:17:59,885 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 10:17:59,885 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-22 10:17:59,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 10:17:59,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-22 10:17:59,886 INFO L87 Difference]: Start difference. First operand 63 states and 88 transitions. Second operand has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 7 states have internal predecessors, (29), 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) [2021-12-22 10:18:02,301 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-22 10:18:02,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 10:18:02,302 INFO L93 Difference]: Finished difference Result 97 states and 137 transitions. [2021-12-22 10:18:02,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-22 10:18:02,334 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 7 states have internal predecessors, (29), 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 29 [2021-12-22 10:18:02,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 10:18:02,335 INFO L225 Difference]: With dead ends: 97 [2021-12-22 10:18:02,335 INFO L226 Difference]: Without dead ends: 63 [2021-12-22 10:18:02,335 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-12-22 10:18:02,336 INFO L933 BasicCegarLoop]: 67 mSDtfsCounter, 11 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 289 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 38 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-12-22 10:18:02,336 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 289 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 1 Unknown, 38 Unchecked, 2.1s Time] [2021-12-22 10:18:02,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2021-12-22 10:18:02,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2021-12-22 10:18:02,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 62 states have (on average 1.3870967741935485) internal successors, (86), 62 states have internal predecessors, (86), 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) [2021-12-22 10:18:02,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 86 transitions. [2021-12-22 10:18:02,340 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 86 transitions. Word has length 29 [2021-12-22 10:18:02,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 10:18:02,340 INFO L470 AbstractCegarLoop]: Abstraction has 63 states and 86 transitions. [2021-12-22 10:18:02,340 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 7 states have internal predecessors, (29), 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) [2021-12-22 10:18:02,341 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 86 transitions. [2021-12-22 10:18:02,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-12-22 10:18:02,342 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 10:18:02,342 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 10:18:02,351 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-12-22 10:18:02,546 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-22 10:18:02,547 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 10:18:02,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 10:18:02,547 INFO L85 PathProgramCache]: Analyzing trace with hash 1093238151, now seen corresponding path program 1 times [2021-12-22 10:18:02,547 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-22 10:18:02,548 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1405109691] [2021-12-22 10:18:02,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 10:18:02,548 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-22 10:18:02,548 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-22 10:18:02,564 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-22 10:18:02,565 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-12-22 10:18:02,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 10:18:02,646 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-22 10:18:02,647 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 10:18:03,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 10:18:03,421 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 10:18:03,421 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-22 10:18:03,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1405109691] [2021-12-22 10:18:03,421 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1405109691] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 10:18:03,421 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 10:18:03,422 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-22 10:18:03,422 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644683864] [2021-12-22 10:18:03,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 10:18:03,422 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-22 10:18:03,422 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-22 10:18:03,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-22 10:18:03,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-22 10:18:03,423 INFO L87 Difference]: Start difference. First operand 63 states and 86 transitions. Second operand has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 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) [2021-12-22 10:18:03,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 10:18:03,425 INFO L93 Difference]: Finished difference Result 99 states and 139 transitions. [2021-12-22 10:18:03,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-22 10:18:03,426 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 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 31 [2021-12-22 10:18:03,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 10:18:03,426 INFO L225 Difference]: With dead ends: 99 [2021-12-22 10:18:03,426 INFO L226 Difference]: Without dead ends: 65 [2021-12-22 10:18:03,426 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-22 10:18:03,427 INFO L933 BasicCegarLoop]: 67 mSDtfsCounter, 2 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 236 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 25 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 10:18:03,427 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 236 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 25 Unchecked, 0.0s Time] [2021-12-22 10:18:03,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2021-12-22 10:18:03,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2021-12-22 10:18:03,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 64 states have (on average 1.375) internal successors, (88), 64 states have internal predecessors, (88), 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) [2021-12-22 10:18:03,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 88 transitions. [2021-12-22 10:18:03,431 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 88 transitions. Word has length 31 [2021-12-22 10:18:03,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 10:18:03,431 INFO L470 AbstractCegarLoop]: Abstraction has 65 states and 88 transitions. [2021-12-22 10:18:03,431 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 5 states have internal predecessors, (31), 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) [2021-12-22 10:18:03,431 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 88 transitions. [2021-12-22 10:18:03,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-12-22 10:18:03,432 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 10:18:03,432 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 10:18:03,443 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-12-22 10:18:03,644 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-22 10:18:03,644 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 10:18:03,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 10:18:03,645 INFO L85 PathProgramCache]: Analyzing trace with hash -1051757721, now seen corresponding path program 1 times [2021-12-22 10:18:03,645 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-22 10:18:03,645 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2133920822] [2021-12-22 10:18:03,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 10:18:03,645 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-22 10:18:03,645 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-22 10:18:03,646 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-22 10:18:03,647 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-12-22 10:18:03,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 10:18:03,728 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-22 10:18:03,729 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 10:18:03,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 10:18:03,974 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 10:18:03,975 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-22 10:18:03,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2133920822] [2021-12-22 10:18:03,975 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2133920822] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 10:18:03,975 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 10:18:03,975 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 10:18:03,975 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303387290] [2021-12-22 10:18:03,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 10:18:03,975 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 10:18:03,975 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-22 10:18:03,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 10:18:03,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 10:18:03,976 INFO L87 Difference]: Start difference. First operand 65 states and 88 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 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) [2021-12-22 10:18:04,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 10:18:04,173 INFO L93 Difference]: Finished difference Result 128 states and 179 transitions. [2021-12-22 10:18:04,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 10:18:04,173 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 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 31 [2021-12-22 10:18:04,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 10:18:04,174 INFO L225 Difference]: With dead ends: 128 [2021-12-22 10:18:04,174 INFO L226 Difference]: Without dead ends: 99 [2021-12-22 10:18:04,174 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 10:18:04,174 INFO L933 BasicCegarLoop]: 70 mSDtfsCounter, 41 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-22 10:18:04,175 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 133 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-22 10:18:04,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2021-12-22 10:18:04,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 84. [2021-12-22 10:18:04,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 83 states have (on average 1.4457831325301205) internal successors, (120), 83 states have internal predecessors, (120), 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) [2021-12-22 10:18:04,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 120 transitions. [2021-12-22 10:18:04,179 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 120 transitions. Word has length 31 [2021-12-22 10:18:04,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 10:18:04,179 INFO L470 AbstractCegarLoop]: Abstraction has 84 states and 120 transitions. [2021-12-22 10:18:04,179 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 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) [2021-12-22 10:18:04,179 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 120 transitions. [2021-12-22 10:18:04,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-12-22 10:18:04,180 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 10:18:04,180 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 10:18:04,195 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-12-22 10:18:04,392 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-22 10:18:04,392 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 10:18:04,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 10:18:04,392 INFO L85 PathProgramCache]: Analyzing trace with hash -1156639288, now seen corresponding path program 1 times [2021-12-22 10:18:04,393 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-22 10:18:04,393 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1081126113] [2021-12-22 10:18:04,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 10:18:04,393 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-22 10:18:04,393 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-22 10:18:04,394 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-22 10:18:04,396 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-12-22 10:18:04,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 10:18:04,492 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-22 10:18:04,493 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 10:18:04,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 10:18:04,821 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 10:18:04,821 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-22 10:18:04,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1081126113] [2021-12-22 10:18:04,821 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1081126113] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 10:18:04,821 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 10:18:04,821 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-22 10:18:04,821 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147564203] [2021-12-22 10:18:04,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 10:18:04,821 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-22 10:18:04,821 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-22 10:18:04,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-22 10:18:04,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-22 10:18:04,822 INFO L87 Difference]: Start difference. First operand 84 states and 120 transitions. Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 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) [2021-12-22 10:18:05,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 10:18:05,265 INFO L93 Difference]: Finished difference Result 139 states and 189 transitions. [2021-12-22 10:18:05,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-22 10:18:05,266 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 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 32 [2021-12-22 10:18:05,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 10:18:05,266 INFO L225 Difference]: With dead ends: 139 [2021-12-22 10:18:05,266 INFO L226 Difference]: Without dead ends: 108 [2021-12-22 10:18:05,267 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-22 10:18:05,267 INFO L933 BasicCegarLoop]: 79 mSDtfsCounter, 53 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 200 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-22 10:18:05,268 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [53 Valid, 200 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-22 10:18:05,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2021-12-22 10:18:05,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 86. [2021-12-22 10:18:05,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 85 states have (on average 1.423529411764706) internal successors, (121), 85 states have internal predecessors, (121), 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) [2021-12-22 10:18:05,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 121 transitions. [2021-12-22 10:18:05,272 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 121 transitions. Word has length 32 [2021-12-22 10:18:05,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 10:18:05,272 INFO L470 AbstractCegarLoop]: Abstraction has 86 states and 121 transitions. [2021-12-22 10:18:05,273 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 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) [2021-12-22 10:18:05,273 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 121 transitions. [2021-12-22 10:18:05,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-12-22 10:18:05,273 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 10:18:05,274 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 10:18:05,285 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-12-22 10:18:05,485 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-22 10:18:05,485 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 10:18:05,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 10:18:05,486 INFO L85 PathProgramCache]: Analyzing trace with hash -1857703866, now seen corresponding path program 1 times [2021-12-22 10:18:05,486 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-22 10:18:05,486 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1630464853] [2021-12-22 10:18:05,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 10:18:05,486 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-22 10:18:05,486 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-22 10:18:05,487 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-22 10:18:05,488 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-12-22 10:18:05,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 10:18:05,598 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-22 10:18:05,599 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 10:18:06,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 10:18:06,326 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 10:18:06,326 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-22 10:18:06,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1630464853] [2021-12-22 10:18:06,326 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1630464853] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 10:18:06,327 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 10:18:06,327 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-22 10:18:06,327 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966263202] [2021-12-22 10:18:06,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 10:18:06,327 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-22 10:18:06,327 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-22 10:18:06,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-22 10:18:06,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-22 10:18:06,328 INFO L87 Difference]: Start difference. First operand 86 states and 121 transitions. Second operand has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 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) [2021-12-22 10:18:07,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 10:18:07,202 INFO L93 Difference]: Finished difference Result 177 states and 244 transitions. [2021-12-22 10:18:07,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-22 10:18:07,203 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 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 32 [2021-12-22 10:18:07,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 10:18:07,204 INFO L225 Difference]: With dead ends: 177 [2021-12-22 10:18:07,204 INFO L226 Difference]: Without dead ends: 145 [2021-12-22 10:18:07,204 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-12-22 10:18:07,204 INFO L933 BasicCegarLoop]: 94 mSDtfsCounter, 99 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 384 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-22 10:18:07,205 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [99 Valid, 384 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-22 10:18:07,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2021-12-22 10:18:07,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 92. [2021-12-22 10:18:07,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 91 states have (on average 1.4065934065934067) internal successors, (128), 91 states have internal predecessors, (128), 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) [2021-12-22 10:18:07,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 128 transitions. [2021-12-22 10:18:07,209 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 128 transitions. Word has length 32 [2021-12-22 10:18:07,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 10:18:07,209 INFO L470 AbstractCegarLoop]: Abstraction has 92 states and 128 transitions. [2021-12-22 10:18:07,209 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 6 states have internal predecessors, (32), 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) [2021-12-22 10:18:07,209 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 128 transitions. [2021-12-22 10:18:07,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-12-22 10:18:07,210 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 10:18:07,212 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 10:18:07,228 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-12-22 10:18:07,413 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-22 10:18:07,413 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 10:18:07,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 10:18:07,414 INFO L85 PathProgramCache]: Analyzing trace with hash 930771680, now seen corresponding path program 1 times [2021-12-22 10:18:07,414 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-22 10:18:07,414 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1498006461] [2021-12-22 10:18:07,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 10:18:07,414 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-22 10:18:07,414 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-22 10:18:07,416 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-22 10:18:07,419 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-12-22 10:18:07,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 10:18:07,516 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-22 10:18:07,517 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 10:18:07,921 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 10:18:07,922 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-22 10:18:08,321 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 10:18:08,321 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-22 10:18:08,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1498006461] [2021-12-22 10:18:08,321 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1498006461] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-22 10:18:08,321 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-22 10:18:08,322 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2021-12-22 10:18:08,322 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468713234] [2021-12-22 10:18:08,322 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-22 10:18:08,322 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-22 10:18:08,322 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-22 10:18:08,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-22 10:18:08,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-12-22 10:18:08,323 INFO L87 Difference]: Start difference. First operand 92 states and 128 transitions. Second operand has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 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) [2021-12-22 10:18:09,388 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-22 10:18:10,771 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-22 10:18:11,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 10:18:11,124 INFO L93 Difference]: Finished difference Result 360 states and 523 transitions. [2021-12-22 10:18:11,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-22 10:18:11,126 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 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 33 [2021-12-22 10:18:11,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 10:18:11,127 INFO L225 Difference]: With dead ends: 360 [2021-12-22 10:18:11,127 INFO L226 Difference]: Without dead ends: 313 [2021-12-22 10:18:11,130 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2021-12-22 10:18:11,131 INFO L933 BasicCegarLoop]: 126 mSDtfsCounter, 442 mSDsluCounter, 246 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 442 SdHoareTripleChecker+Valid, 372 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2021-12-22 10:18:11,131 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [442 Valid, 372 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2021-12-22 10:18:11,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2021-12-22 10:18:11,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 102. [2021-12-22 10:18:11,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 101 states have (on average 1.4158415841584158) internal successors, (143), 101 states have internal predecessors, (143), 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) [2021-12-22 10:18:11,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 143 transitions. [2021-12-22 10:18:11,142 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 143 transitions. Word has length 33 [2021-12-22 10:18:11,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 10:18:11,142 INFO L470 AbstractCegarLoop]: Abstraction has 102 states and 143 transitions. [2021-12-22 10:18:11,142 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 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) [2021-12-22 10:18:11,143 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 143 transitions. [2021-12-22 10:18:11,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-12-22 10:18:11,146 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 10:18:11,146 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 10:18:11,162 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-12-22 10:18:11,360 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-22 10:18:11,361 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 10:18:11,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 10:18:11,361 INFO L85 PathProgramCache]: Analyzing trace with hash 714531849, now seen corresponding path program 1 times [2021-12-22 10:18:11,361 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-22 10:18:11,362 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [480536227] [2021-12-22 10:18:11,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 10:18:11,362 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-22 10:18:11,362 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-22 10:18:11,363 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-22 10:18:11,364 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-12-22 10:18:11,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 10:18:11,442 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-22 10:18:11,444 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 10:18:11,788 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 10:18:11,788 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-22 10:18:12,193 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 10:18:12,194 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-22 10:18:12,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [480536227] [2021-12-22 10:18:12,194 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [480536227] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-22 10:18:12,194 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-22 10:18:12,194 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2021-12-22 10:18:12,194 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287295155] [2021-12-22 10:18:12,194 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-22 10:18:12,195 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-22 10:18:12,195 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-22 10:18:12,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-22 10:18:12,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-12-22 10:18:12,196 INFO L87 Difference]: Start difference. First operand 102 states and 143 transitions. Second operand has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 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) [2021-12-22 10:18:12,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 10:18:12,887 INFO L93 Difference]: Finished difference Result 237 states and 339 transitions. [2021-12-22 10:18:12,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-22 10:18:12,888 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 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 33 [2021-12-22 10:18:12,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 10:18:12,889 INFO L225 Difference]: With dead ends: 237 [2021-12-22 10:18:12,889 INFO L226 Difference]: Without dead ends: 208 [2021-12-22 10:18:12,890 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-22 10:18:12,890 INFO L933 BasicCegarLoop]: 108 mSDtfsCounter, 171 mSDsluCounter, 265 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 373 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-22 10:18:12,891 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [171 Valid, 373 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-22 10:18:12,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2021-12-22 10:18:12,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 166. [2021-12-22 10:18:12,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 165 states have (on average 1.496969696969697) internal successors, (247), 165 states have internal predecessors, (247), 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) [2021-12-22 10:18:12,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 247 transitions. [2021-12-22 10:18:12,903 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 247 transitions. Word has length 33 [2021-12-22 10:18:12,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 10:18:12,904 INFO L470 AbstractCegarLoop]: Abstraction has 166 states and 247 transitions. [2021-12-22 10:18:12,904 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 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) [2021-12-22 10:18:12,904 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 247 transitions. [2021-12-22 10:18:12,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-12-22 10:18:12,905 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 10:18:12,905 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 10:18:12,918 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-12-22 10:18:13,115 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-22 10:18:13,116 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 10:18:13,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 10:18:13,116 INFO L85 PathProgramCache]: Analyzing trace with hash -2071939666, now seen corresponding path program 1 times [2021-12-22 10:18:13,116 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-22 10:18:13,116 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1026335640] [2021-12-22 10:18:13,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 10:18:13,117 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-22 10:18:13,117 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-22 10:18:13,118 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-22 10:18:13,120 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-12-22 10:18:13,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 10:18:13,223 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-22 10:18:13,224 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 10:18:15,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 10:18:15,866 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 10:18:15,867 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-22 10:18:15,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1026335640] [2021-12-22 10:18:15,867 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1026335640] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 10:18:15,867 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 10:18:15,867 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-22 10:18:15,867 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498894703] [2021-12-22 10:18:15,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 10:18:15,867 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-22 10:18:15,868 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-22 10:18:15,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-22 10:18:15,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-12-22 10:18:15,868 INFO L87 Difference]: Start difference. First operand 166 states and 247 transitions. Second operand has 11 states, 11 states have (on average 3.0) internal successors, (33), 11 states have internal predecessors, (33), 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) [2021-12-22 10:18:16,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 10:18:16,681 INFO L93 Difference]: Finished difference Result 271 states and 386 transitions. [2021-12-22 10:18:16,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-22 10:18:16,682 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.0) internal successors, (33), 11 states have internal predecessors, (33), 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 33 [2021-12-22 10:18:16,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 10:18:16,683 INFO L225 Difference]: With dead ends: 271 [2021-12-22 10:18:16,683 INFO L226 Difference]: Without dead ends: 237 [2021-12-22 10:18:16,684 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2021-12-22 10:18:16,684 INFO L933 BasicCegarLoop]: 97 mSDtfsCounter, 63 mSDsluCounter, 560 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 657 SdHoareTripleChecker+Invalid, 257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 213 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-22 10:18:16,685 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [63 Valid, 657 Invalid, 257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 42 Invalid, 0 Unknown, 213 Unchecked, 0.5s Time] [2021-12-22 10:18:16,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2021-12-22 10:18:16,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 170. [2021-12-22 10:18:16,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 169 states have (on average 1.4911242603550297) internal successors, (252), 169 states have internal predecessors, (252), 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) [2021-12-22 10:18:16,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 252 transitions. [2021-12-22 10:18:16,696 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 252 transitions. Word has length 33 [2021-12-22 10:18:16,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 10:18:16,696 INFO L470 AbstractCegarLoop]: Abstraction has 170 states and 252 transitions. [2021-12-22 10:18:16,697 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.0) internal successors, (33), 11 states have internal predecessors, (33), 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) [2021-12-22 10:18:16,697 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 252 transitions. [2021-12-22 10:18:16,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-12-22 10:18:16,697 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 10:18:16,697 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 10:18:16,711 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-12-22 10:18:16,910 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-22 10:18:16,911 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 10:18:16,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 10:18:16,911 INFO L85 PathProgramCache]: Analyzing trace with hash -2014681364, now seen corresponding path program 1 times [2021-12-22 10:18:16,911 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-22 10:18:16,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [967210965] [2021-12-22 10:18:16,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 10:18:16,912 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-22 10:18:16,912 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-22 10:18:16,913 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-22 10:18:16,913 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-12-22 10:18:17,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 10:18:17,009 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 11 conjunts are in the unsatisfiable core [2021-12-22 10:18:17,010 INFO L286 TraceCheckSpWp]: Computing forward predicates...