./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-newlib/float_req_bl_1232a.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c3fed411 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/float_req_bl_1232a.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 6f83584f969f73b8fbd0ee35f3e06725eeb8b2fb54d0ca8487878342f741f280 --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-17 07:53:34,317 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-17 07:53:34,319 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-17 07:53:34,366 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-17 07:53:34,367 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-17 07:53:34,371 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-17 07:53:34,372 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-17 07:53:34,375 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-17 07:53:34,377 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-17 07:53:34,382 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-17 07:53:34,383 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-17 07:53:34,385 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-17 07:53:34,385 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-17 07:53:34,387 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-17 07:53:34,389 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-17 07:53:34,394 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-17 07:53:34,395 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-17 07:53:34,396 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-17 07:53:34,398 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-17 07:53:34,400 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-17 07:53:34,401 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-17 07:53:34,404 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-17 07:53:34,405 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-17 07:53:34,406 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-17 07:53:34,408 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-17 07:53:34,410 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-17 07:53:34,410 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-17 07:53:34,411 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-17 07:53:34,412 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-17 07:53:34,413 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-17 07:53:34,413 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-17 07:53:34,414 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-17 07:53:34,415 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-17 07:53:34,416 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-17 07:53:34,417 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-17 07:53:34,418 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-17 07:53:34,418 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-17 07:53:34,418 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-17 07:53:34,418 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-17 07:53:34,419 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-17 07:53:34,420 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-17 07:53:34,421 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-17 07:53:34,452 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-17 07:53:34,452 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-17 07:53:34,453 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-17 07:53:34,453 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-17 07:53:34,454 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-17 07:53:34,454 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-17 07:53:34,455 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-17 07:53:34,455 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-17 07:53:34,455 INFO L138 SettingsManager]: * Use SBE=true [2021-12-17 07:53:34,455 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-17 07:53:34,456 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-17 07:53:34,456 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-17 07:53:34,456 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-17 07:53:34,456 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-17 07:53:34,457 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-17 07:53:34,457 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-17 07:53:34,457 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-17 07:53:34,457 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-17 07:53:34,457 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-17 07:53:34,458 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-17 07:53:34,458 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-17 07:53:34,458 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-17 07:53:34,458 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-17 07:53:34,458 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-17 07:53:34,458 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 07:53:34,459 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-17 07:53:34,459 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-17 07:53:34,460 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-17 07:53:34,460 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-17 07:53:34,460 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-17 07:53:34,461 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-17 07:53:34,461 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-17 07:53:34,461 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-17 07:53:34,461 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-17 07:53:34,461 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6f83584f969f73b8fbd0ee35f3e06725eeb8b2fb54d0ca8487878342f741f280 [2021-12-17 07:53:34,740 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-17 07:53:34,764 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-17 07:53:34,766 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-17 07:53:34,767 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-17 07:53:34,768 INFO L275 PluginConnector]: CDTParser initialized [2021-12-17 07:53:34,769 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/float_req_bl_1232a.c [2021-12-17 07:53:34,831 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cd9462c88/a1671fcfb3064138b6ee5821c405d231/FLAG1d662f6ed [2021-12-17 07:53:35,276 INFO L306 CDTParser]: Found 1 translation units. [2021-12-17 07:53:35,276 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/float_req_bl_1232a.c [2021-12-17 07:53:35,288 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cd9462c88/a1671fcfb3064138b6ee5821c405d231/FLAG1d662f6ed [2021-12-17 07:53:35,680 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cd9462c88/a1671fcfb3064138b6ee5821c405d231 [2021-12-17 07:53:35,682 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-17 07:53:35,684 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-17 07:53:35,686 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-17 07:53:35,687 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-17 07:53:35,689 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-17 07:53:35,690 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 07:53:35" (1/1) ... [2021-12-17 07:53:35,691 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b9976c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 07:53:35, skipping insertion in model container [2021-12-17 07:53:35,692 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 07:53:35" (1/1) ... [2021-12-17 07:53:35,697 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-17 07:53:35,710 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-17 07:53:35,893 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/float_req_bl_1232a.c[1656,1669] [2021-12-17 07:53:35,899 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 07:53:35,951 INFO L203 MainTranslator]: Completed pre-run [2021-12-17 07:53:35,989 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/float_req_bl_1232a.c[1656,1669] [2021-12-17 07:53:35,990 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 07:53:36,001 INFO L208 MainTranslator]: Completed translation [2021-12-17 07:53:36,002 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 07:53:36 WrapperNode [2021-12-17 07:53:36,002 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-17 07:53:36,003 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-17 07:53:36,003 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-17 07:53:36,003 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-17 07:53:36,009 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 07:53:36" (1/1) ... [2021-12-17 07:53:36,023 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 07:53:36" (1/1) ... [2021-12-17 07:53:36,045 INFO L137 Inliner]: procedures = 18, calls = 19, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 67 [2021-12-17 07:53:36,045 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-17 07:53:36,046 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-17 07:53:36,046 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-17 07:53:36,046 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-17 07:53:36,053 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 07:53:36" (1/1) ... [2021-12-17 07:53:36,054 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 07:53:36" (1/1) ... [2021-12-17 07:53:36,058 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 07:53:36" (1/1) ... [2021-12-17 07:53:36,058 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 07:53:36" (1/1) ... [2021-12-17 07:53:36,076 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 07:53:36" (1/1) ... [2021-12-17 07:53:36,082 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 07:53:36" (1/1) ... [2021-12-17 07:53:36,087 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 07:53:36" (1/1) ... [2021-12-17 07:53:36,089 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-17 07:53:36,091 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-17 07:53:36,091 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-17 07:53:36,091 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-17 07:53:36,092 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 07:53:36" (1/1) ... [2021-12-17 07:53:36,098 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 07:53:36,107 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 07:53:36,129 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) [2021-12-17 07:53:36,149 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 [2021-12-17 07:53:36,166 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-17 07:53:36,166 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-17 07:53:36,166 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-17 07:53:36,166 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_float [2021-12-17 07:53:36,166 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_float [2021-12-17 07:53:36,167 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-12-17 07:53:36,167 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-17 07:53:36,167 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-17 07:53:36,167 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-17 07:53:36,167 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-17 07:53:36,230 INFO L236 CfgBuilder]: Building ICFG [2021-12-17 07:53:36,231 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-17 07:53:36,357 INFO L277 CfgBuilder]: Performing block encoding [2021-12-17 07:53:36,362 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-17 07:53:36,362 INFO L301 CfgBuilder]: Removed 4 assume(true) statements. [2021-12-17 07:53:36,364 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 07:53:36 BoogieIcfgContainer [2021-12-17 07:53:36,364 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-17 07:53:36,365 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-17 07:53:36,366 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-17 07:53:36,381 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-17 07:53:36,382 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.12 07:53:35" (1/3) ... [2021-12-17 07:53:36,382 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16ac4436 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 07:53:36, skipping insertion in model container [2021-12-17 07:53:36,383 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 07:53:36" (2/3) ... [2021-12-17 07:53:36,383 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16ac4436 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 07:53:36, skipping insertion in model container [2021-12-17 07:53:36,383 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 07:53:36" (3/3) ... [2021-12-17 07:53:36,384 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1232a.c [2021-12-17 07:53:36,388 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-17 07:53:36,389 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-17 07:53:36,460 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-17 07:53:36,480 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 [2021-12-17 07:53:36,481 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-17 07:53:36,508 INFO L276 IsEmpty]: Start isEmpty. Operand has 31 states, 26 states have (on average 1.5384615384615385) internal successors, (40), 27 states have internal predecessors, (40), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-17 07:53:36,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-12-17 07:53:36,514 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 07:53:36,515 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 07:53:36,516 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 07:53:36,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 07:53:36,526 INFO L85 PathProgramCache]: Analyzing trace with hash -1376173917, now seen corresponding path program 1 times [2021-12-17 07:53:36,534 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 07:53:36,535 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926919243] [2021-12-17 07:53:36,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 07:53:36,538 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 07:53:36,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 07:53:36,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-17 07:53:36,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 07:53:36,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 07:53:36,746 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 07:53:36,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926919243] [2021-12-17 07:53:36,747 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1926919243] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 07:53:36,747 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 07:53:36,748 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 07:53:36,749 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472608068] [2021-12-17 07:53:36,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 07:53:36,753 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 07:53:36,754 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 07:53:36,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 07:53:36,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 07:53:36,787 INFO L87 Difference]: Start difference. First operand has 31 states, 26 states have (on average 1.5384615384615385) internal successors, (40), 27 states have internal predecessors, (40), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-17 07:53:36,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 07:53:36,837 INFO L93 Difference]: Finished difference Result 59 states and 86 transitions. [2021-12-17 07:53:36,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 07:53:36,840 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2021-12-17 07:53:36,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 07:53:36,848 INFO L225 Difference]: With dead ends: 59 [2021-12-17 07:53:36,849 INFO L226 Difference]: Without dead ends: 28 [2021-12-17 07:53:36,852 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 07:53:36,857 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 1 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 07:53:36,859 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 71 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 07:53:36,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-12-17 07:53:36,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2021-12-17 07:53:36,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 24 states have (on average 1.3333333333333333) internal successors, (32), 24 states have internal predecessors, (32), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-17 07:53:36,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 36 transitions. [2021-12-17 07:53:36,898 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 36 transitions. Word has length 14 [2021-12-17 07:53:36,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 07:53:36,898 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 36 transitions. [2021-12-17 07:53:36,899 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-17 07:53:36,899 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 36 transitions. [2021-12-17 07:53:36,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-12-17 07:53:36,901 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 07:53:36,902 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 07:53:36,902 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-17 07:53:36,903 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 07:53:36,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 07:53:36,906 INFO L85 PathProgramCache]: Analyzing trace with hash -1160673575, now seen corresponding path program 1 times [2021-12-17 07:53:36,906 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 07:53:36,907 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059838033] [2021-12-17 07:53:36,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 07:53:36,907 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 07:53:36,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 07:53:37,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-17 07:53:37,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 07:53:37,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 07:53:37,060 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 07:53:37,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059838033] [2021-12-17 07:53:37,060 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059838033] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 07:53:37,060 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 07:53:37,060 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-17 07:53:37,061 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109430358] [2021-12-17 07:53:37,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 07:53:37,063 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-17 07:53:37,063 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 07:53:37,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-17 07:53:37,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-17 07:53:37,064 INFO L87 Difference]: Start difference. First operand 28 states and 36 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-17 07:53:37,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 07:53:37,094 INFO L93 Difference]: Finished difference Result 41 states and 51 transitions. [2021-12-17 07:53:37,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-17 07:53:37,095 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2021-12-17 07:53:37,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 07:53:37,098 INFO L225 Difference]: With dead ends: 41 [2021-12-17 07:53:37,098 INFO L226 Difference]: Without dead ends: 32 [2021-12-17 07:53:37,102 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-17 07:53:37,104 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 1 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 07:53:37,104 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 120 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 07:53:37,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-12-17 07:53:37,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2021-12-17 07:53:37,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 27 states have (on average 1.2962962962962963) internal successors, (35), 27 states have internal predecessors, (35), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-17 07:53:37,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 41 transitions. [2021-12-17 07:53:37,126 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 41 transitions. Word has length 15 [2021-12-17 07:53:37,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 07:53:37,126 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 41 transitions. [2021-12-17 07:53:37,127 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-17 07:53:37,127 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 41 transitions. [2021-12-17 07:53:37,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-12-17 07:53:37,128 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 07:53:37,128 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 07:53:37,128 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-17 07:53:37,128 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 07:53:37,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 07:53:37,129 INFO L85 PathProgramCache]: Analyzing trace with hash 1319120806, now seen corresponding path program 1 times [2021-12-17 07:53:37,129 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 07:53:37,130 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516640368] [2021-12-17 07:53:37,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 07:53:37,130 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 07:53:37,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 07:53:37,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-17 07:53:37,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 07:53:37,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 07:53:37,224 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 07:53:37,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516640368] [2021-12-17 07:53:37,225 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516640368] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 07:53:37,225 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 07:53:37,225 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-17 07:53:37,225 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575646497] [2021-12-17 07:53:37,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 07:53:37,226 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-17 07:53:37,226 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 07:53:37,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-17 07:53:37,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-17 07:53:37,227 INFO L87 Difference]: Start difference. First operand 32 states and 41 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-17 07:53:37,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 07:53:37,257 INFO L93 Difference]: Finished difference Result 45 states and 56 transitions. [2021-12-17 07:53:37,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-17 07:53:37,258 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2021-12-17 07:53:37,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 07:53:37,259 INFO L225 Difference]: With dead ends: 45 [2021-12-17 07:53:37,259 INFO L226 Difference]: Without dead ends: 36 [2021-12-17 07:53:37,259 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-17 07:53:37,260 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 1 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 07:53:37,261 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 136 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 07:53:37,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-12-17 07:53:37,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 32. [2021-12-17 07:53:37,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 27 states have (on average 1.2962962962962963) internal successors, (35), 27 states have internal predecessors, (35), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-17 07:53:37,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 41 transitions. [2021-12-17 07:53:37,266 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 41 transitions. Word has length 16 [2021-12-17 07:53:37,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 07:53:37,266 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 41 transitions. [2021-12-17 07:53:37,267 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-17 07:53:37,267 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 41 transitions. [2021-12-17 07:53:37,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-12-17 07:53:37,267 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 07:53:37,268 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 07:53:37,268 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-17 07:53:37,268 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 07:53:37,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 07:53:37,269 INFO L85 PathProgramCache]: Analyzing trace with hash -2051515267, now seen corresponding path program 1 times [2021-12-17 07:53:37,269 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 07:53:37,269 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139928858] [2021-12-17 07:53:37,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 07:53:37,269 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 07:53:37,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 07:53:37,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-17 07:53:37,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 07:53:37,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 07:53:37,343 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 07:53:37,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139928858] [2021-12-17 07:53:37,343 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139928858] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 07:53:37,344 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 07:53:37,344 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-17 07:53:37,344 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412138109] [2021-12-17 07:53:37,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 07:53:37,344 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-17 07:53:37,345 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 07:53:37,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-17 07:53:37,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-17 07:53:37,345 INFO L87 Difference]: Start difference. First operand 32 states and 41 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-17 07:53:37,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 07:53:37,370 INFO L93 Difference]: Finished difference Result 45 states and 56 transitions. [2021-12-17 07:53:37,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-17 07:53:37,371 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2021-12-17 07:53:37,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 07:53:37,371 INFO L225 Difference]: With dead ends: 45 [2021-12-17 07:53:37,372 INFO L226 Difference]: Without dead ends: 36 [2021-12-17 07:53:37,372 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-17 07:53:37,373 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 1 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 07:53:37,373 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 136 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 07:53:37,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-12-17 07:53:37,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 32. [2021-12-17 07:53:37,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 27 states have (on average 1.2962962962962963) internal successors, (35), 27 states have internal predecessors, (35), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-17 07:53:37,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 41 transitions. [2021-12-17 07:53:37,379 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 41 transitions. Word has length 17 [2021-12-17 07:53:37,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 07:53:37,379 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 41 transitions. [2021-12-17 07:53:37,380 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-17 07:53:37,380 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 41 transitions. [2021-12-17 07:53:37,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-12-17 07:53:37,380 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 07:53:37,380 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 07:53:37,381 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-17 07:53:37,381 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 07:53:37,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 07:53:37,381 INFO L85 PathProgramCache]: Analyzing trace with hash -2101901686, now seen corresponding path program 1 times [2021-12-17 07:53:37,382 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 07:53:37,382 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852051366] [2021-12-17 07:53:37,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 07:53:37,382 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 07:53:37,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 07:53:37,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-17 07:53:37,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 07:53:37,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 07:53:37,473 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 07:53:37,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852051366] [2021-12-17 07:53:37,473 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852051366] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 07:53:37,473 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 07:53:37,474 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-17 07:53:37,474 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128799215] [2021-12-17 07:53:37,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 07:53:37,474 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-17 07:53:37,475 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 07:53:37,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-17 07:53:37,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-17 07:53:37,476 INFO L87 Difference]: Start difference. First operand 32 states and 41 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-17 07:53:37,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 07:53:37,498 INFO L93 Difference]: Finished difference Result 45 states and 56 transitions. [2021-12-17 07:53:37,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-17 07:53:37,499 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2021-12-17 07:53:37,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 07:53:37,500 INFO L225 Difference]: With dead ends: 45 [2021-12-17 07:53:37,500 INFO L226 Difference]: Without dead ends: 36 [2021-12-17 07:53:37,501 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-17 07:53:37,502 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 1 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 07:53:37,502 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 136 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 07:53:37,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-12-17 07:53:37,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 32. [2021-12-17 07:53:37,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 27 states have (on average 1.2962962962962963) internal successors, (35), 27 states have internal predecessors, (35), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-17 07:53:37,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 41 transitions. [2021-12-17 07:53:37,508 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 41 transitions. Word has length 18 [2021-12-17 07:53:37,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 07:53:37,508 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 41 transitions. [2021-12-17 07:53:37,508 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-17 07:53:37,509 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 41 transitions. [2021-12-17 07:53:37,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-12-17 07:53:37,509 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 07:53:37,509 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 07:53:37,510 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-17 07:53:37,510 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 07:53:37,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 07:53:37,510 INFO L85 PathProgramCache]: Analyzing trace with hash 385611147, now seen corresponding path program 1 times [2021-12-17 07:53:37,511 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 07:53:37,511 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463862032] [2021-12-17 07:53:37,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 07:53:37,521 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 07:53:37,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-17 07:53:37,538 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-17 07:53:37,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-17 07:53:37,575 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-17 07:53:37,575 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-17 07:53:37,576 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-17 07:53:37,578 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-17 07:53:37,582 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2021-12-17 07:53:37,584 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-17 07:53:37,609 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.12 07:53:37 BoogieIcfgContainer [2021-12-17 07:53:37,610 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-17 07:53:37,610 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-17 07:53:37,611 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-17 07:53:37,611 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-17 07:53:37,611 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 07:53:36" (3/4) ... [2021-12-17 07:53:37,614 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-12-17 07:53:37,614 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-17 07:53:37,616 INFO L158 Benchmark]: Toolchain (without parser) took 1930.96ms. Allocated memory is still 102.8MB. Free memory was 81.6MB in the beginning and 44.6MB in the end (delta: 37.0MB). Peak memory consumption was 36.3MB. Max. memory is 16.1GB. [2021-12-17 07:53:37,617 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 75.5MB. Free memory is still 46.6MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-17 07:53:37,617 INFO L158 Benchmark]: CACSL2BoogieTranslator took 316.61ms. Allocated memory is still 102.8MB. Free memory was 81.6MB in the beginning and 79.3MB in the end (delta: 2.2MB). Peak memory consumption was 10.7MB. Max. memory is 16.1GB. [2021-12-17 07:53:37,617 INFO L158 Benchmark]: Boogie Procedure Inliner took 42.26ms. Allocated memory is still 102.8MB. Free memory was 79.3MB in the beginning and 77.8MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-17 07:53:37,617 INFO L158 Benchmark]: Boogie Preprocessor took 43.86ms. Allocated memory is still 102.8MB. Free memory was 77.8MB in the beginning and 76.7MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-17 07:53:37,618 INFO L158 Benchmark]: RCFGBuilder took 273.35ms. Allocated memory is still 102.8MB. Free memory was 76.7MB in the beginning and 64.6MB in the end (delta: 12.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-12-17 07:53:37,618 INFO L158 Benchmark]: TraceAbstraction took 1244.53ms. Allocated memory is still 102.8MB. Free memory was 64.6MB in the beginning and 45.2MB in the end (delta: 19.4MB). Peak memory consumption was 19.3MB. Max. memory is 16.1GB. [2021-12-17 07:53:37,618 INFO L158 Benchmark]: Witness Printer took 3.75ms. Allocated memory is still 102.8MB. Free memory was 45.2MB in the beginning and 44.6MB in the end (delta: 650.3kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-17 07:53:37,620 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 75.5MB. Free memory is still 46.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 316.61ms. Allocated memory is still 102.8MB. Free memory was 81.6MB in the beginning and 79.3MB in the end (delta: 2.2MB). Peak memory consumption was 10.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 42.26ms. Allocated memory is still 102.8MB. Free memory was 79.3MB in the beginning and 77.8MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 43.86ms. Allocated memory is still 102.8MB. Free memory was 77.8MB in the beginning and 76.7MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 273.35ms. Allocated memory is still 102.8MB. Free memory was 76.7MB in the beginning and 64.6MB in the end (delta: 12.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 1244.53ms. Allocated memory is still 102.8MB. Free memory was 64.6MB in the beginning and 45.2MB in the end (delta: 19.4MB). Peak memory consumption was 19.3MB. Max. memory is 16.1GB. * Witness Printer took 3.75ms. Allocated memory is still 102.8MB. Free memory was 45.2MB in the beginning and 44.6MB in the end (delta: 650.3kB). 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: 72]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 71, overapproximation of someUnaryFLOAToperation at line 67. Possible FailurePath: [L66] float x = 0.0f; [L67] float y = -0.0f; [L68] CALL, EXPR fmin_float(x, y) [L38] CALL, EXPR __fpclassify_float(x) VAL [\old(x)=0] [L15] __uint32_t w; VAL [\old(x)=0, x=0] [L18] ieee_float_shape_type gf_u; [L19] gf_u.value = (x) [L20] EXPR gf_u.word [L20] (w) = gf_u.word [L23] COND FALSE !(w == 0x00000000 || w == 0x80000000) VAL [\old(x)=0, w=4286578689, x=0] [L25-L26] COND FALSE !((w >= 0x00800000 && w <= 0x7f7fffff) || (w >= 0x80800000 && w <= 0xff7fffff)) VAL [\old(x)=0, w=4286578689, x=0] [L28-L29] COND FALSE !((w >= 0x00000001 && w <= 0x007fffff) || (w >= 0x80000001 && w <= 0x807fffff)) VAL [\old(x)=0, w=4286578689, x=0] [L31] COND FALSE !(w == 0x7f800000 || w == 0xff800000) [L34] return 0; VAL [\old(x)=0, \result=0, w=4286578689, x=0] [L38] RET, EXPR __fpclassify_float(x) VAL [\old(x)=0, \old(y)=4286578690, __fpclassify_float(x)=0, x=0, y=4286578690] [L38] COND TRUE __fpclassify_float(x) == 0 [L39] return y; VAL [\old(x)=0, \old(y)=4286578690, \result=4286578690, x=0, y=4286578690] [L68] RET, EXPR fmin_float(x, y) [L68] float res = fmin_float(x, y); [L71] EXPR res == -0.0f && __signbit_float(res) == 1 VAL [res=4286578690, res == -0.0f && __signbit_float(res) == 1=0, x=0, y=4286578690] [L71] COND TRUE !(res == -0.0f && __signbit_float(res) == 1) [L72] reach_error() VAL [res=4286578690, x=0, y=4286578690] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 31 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.1s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 5 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 5 mSDsluCounter, 599 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 414 mSDsCounter, 5 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 87 IncrementalHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5 mSolverCounterUnsat, 185 mSDtfsCounter, 87 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 29 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred in iteration=2, InterpolantAutomatonStates: 23, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 12 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 98 NumberOfCodeBlocks, 98 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 75 ConstructedInterpolants, 0 QuantifiedInterpolants, 191 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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 [2021-12-17 07:53:37,654 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with 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/float_req_bl_1232a.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 6f83584f969f73b8fbd0ee35f3e06725eeb8b2fb54d0ca8487878342f741f280 --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-17 07:53:39,631 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-17 07:53:39,634 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-17 07:53:39,672 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-17 07:53:39,673 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-17 07:53:39,677 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-17 07:53:39,678 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-17 07:53:39,683 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-17 07:53:39,685 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-17 07:53:39,690 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-17 07:53:39,691 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-17 07:53:39,692 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-17 07:53:39,692 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-17 07:53:39,695 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-17 07:53:39,696 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-17 07:53:39,702 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-17 07:53:39,703 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-17 07:53:39,704 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-17 07:53:39,706 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-17 07:53:39,711 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-17 07:53:39,713 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-17 07:53:39,714 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-17 07:53:39,715 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-17 07:53:39,717 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-17 07:53:39,723 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-17 07:53:39,723 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-17 07:53:39,724 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-17 07:53:39,725 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-17 07:53:39,726 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-17 07:53:39,727 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-17 07:53:39,727 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-17 07:53:39,728 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-17 07:53:39,729 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-17 07:53:39,730 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-17 07:53:39,731 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-17 07:53:39,731 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-17 07:53:39,732 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-17 07:53:39,732 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-17 07:53:39,733 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-17 07:53:39,734 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-17 07:53:39,734 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-17 07:53:39,738 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-12-17 07:53:39,773 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-17 07:53:39,773 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-17 07:53:39,774 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-17 07:53:39,774 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-17 07:53:39,775 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-17 07:53:39,775 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-17 07:53:39,775 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-17 07:53:39,775 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-17 07:53:39,776 INFO L138 SettingsManager]: * Use SBE=true [2021-12-17 07:53:39,776 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-17 07:53:39,777 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-17 07:53:39,777 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-17 07:53:39,777 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-17 07:53:39,777 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-17 07:53:39,778 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-17 07:53:39,778 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-17 07:53:39,778 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-17 07:53:39,778 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-17 07:53:39,778 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-17 07:53:39,779 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-17 07:53:39,779 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-17 07:53:39,779 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-17 07:53:39,779 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-17 07:53:39,780 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-17 07:53:39,780 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-17 07:53:39,787 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-17 07:53:39,788 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 07:53:39,791 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-17 07:53:39,791 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-17 07:53:39,791 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-17 07:53:39,792 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-17 07:53:39,792 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-17 07:53:39,792 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-17 07:53:39,792 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-17 07:53:39,793 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-17 07:53:39,793 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-17 07:53:39,793 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-17 07:53:39,793 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6f83584f969f73b8fbd0ee35f3e06725eeb8b2fb54d0ca8487878342f741f280 [2021-12-17 07:53:40,126 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-17 07:53:40,148 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-17 07:53:40,150 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-17 07:53:40,152 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-17 07:53:40,152 INFO L275 PluginConnector]: CDTParser initialized [2021-12-17 07:53:40,154 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/float_req_bl_1232a.c [2021-12-17 07:53:40,214 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/12714088b/91c6be9ecd7c4466aa18ce6d08650386/FLAGad4c29592 [2021-12-17 07:53:40,658 INFO L306 CDTParser]: Found 1 translation units. [2021-12-17 07:53:40,659 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/float_req_bl_1232a.c [2021-12-17 07:53:40,668 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/12714088b/91c6be9ecd7c4466aa18ce6d08650386/FLAGad4c29592 [2021-12-17 07:53:41,074 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/12714088b/91c6be9ecd7c4466aa18ce6d08650386 [2021-12-17 07:53:41,078 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-17 07:53:41,080 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-17 07:53:41,088 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-17 07:53:41,088 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-17 07:53:41,092 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-17 07:53:41,092 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 07:53:41" (1/1) ... [2021-12-17 07:53:41,095 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33df411e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 07:53:41, skipping insertion in model container [2021-12-17 07:53:41,095 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 07:53:41" (1/1) ... [2021-12-17 07:53:41,101 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-17 07:53:41,116 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-17 07:53:41,247 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/float_req_bl_1232a.c[1656,1669] [2021-12-17 07:53:41,254 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 07:53:41,263 INFO L203 MainTranslator]: Completed pre-run [2021-12-17 07:53:41,279 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/float_req_bl_1232a.c[1656,1669] [2021-12-17 07:53:41,280 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 07:53:41,293 INFO L208 MainTranslator]: Completed translation [2021-12-17 07:53:41,293 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 07:53:41 WrapperNode [2021-12-17 07:53:41,294 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-17 07:53:41,295 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-17 07:53:41,295 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-17 07:53:41,295 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-17 07:53:41,299 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 07:53:41" (1/1) ... [2021-12-17 07:53:41,306 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 07:53:41" (1/1) ... [2021-12-17 07:53:41,322 INFO L137 Inliner]: procedures = 21, calls = 19, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 65 [2021-12-17 07:53:41,322 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-17 07:53:41,323 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-17 07:53:41,323 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-17 07:53:41,323 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-17 07:53:41,330 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 07:53:41" (1/1) ... [2021-12-17 07:53:41,330 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 07:53:41" (1/1) ... [2021-12-17 07:53:41,339 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 07:53:41" (1/1) ... [2021-12-17 07:53:41,340 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 07:53:41" (1/1) ... [2021-12-17 07:53:41,357 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 07:53:41" (1/1) ... [2021-12-17 07:53:41,367 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 07:53:41" (1/1) ... [2021-12-17 07:53:41,371 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 07:53:41" (1/1) ... [2021-12-17 07:53:41,378 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-17 07:53:41,383 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-17 07:53:41,383 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-17 07:53:41,384 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-17 07:53:41,385 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 07:53:41" (1/1) ... [2021-12-17 07:53:41,390 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 07:53:41,398 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 07:53:41,408 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) [2021-12-17 07:53:41,415 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 [2021-12-17 07:53:41,436 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-17 07:53:41,436 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-17 07:53:41,436 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-17 07:53:41,437 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_float [2021-12-17 07:53:41,437 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_float [2021-12-17 07:53:41,437 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-12-17 07:53:41,437 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-17 07:53:41,437 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-17 07:53:41,437 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2021-12-17 07:53:41,438 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-17 07:53:41,497 INFO L236 CfgBuilder]: Building ICFG [2021-12-17 07:53:41,499 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-17 07:53:41,713 INFO L277 CfgBuilder]: Performing block encoding [2021-12-17 07:53:41,717 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-17 07:53:41,718 INFO L301 CfgBuilder]: Removed 4 assume(true) statements. [2021-12-17 07:53:41,719 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 07:53:41 BoogieIcfgContainer [2021-12-17 07:53:41,719 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-17 07:53:41,721 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-17 07:53:41,721 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-17 07:53:41,723 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-17 07:53:41,724 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.12 07:53:41" (1/3) ... [2021-12-17 07:53:41,724 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f21d5fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 07:53:41, skipping insertion in model container [2021-12-17 07:53:41,725 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 07:53:41" (2/3) ... [2021-12-17 07:53:41,725 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f21d5fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 07:53:41, skipping insertion in model container [2021-12-17 07:53:41,725 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 07:53:41" (3/3) ... [2021-12-17 07:53:41,726 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1232a.c [2021-12-17 07:53:41,731 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-17 07:53:41,731 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-17 07:53:41,793 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-17 07:53:41,802 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 [2021-12-17 07:53:41,803 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-17 07:53:41,827 INFO L276 IsEmpty]: Start isEmpty. Operand has 29 states, 24 states have (on average 1.5833333333333333) internal successors, (38), 25 states have internal predecessors, (38), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-17 07:53:41,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-12-17 07:53:41,832 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 07:53:41,833 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 07:53:41,834 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 07:53:41,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 07:53:41,843 INFO L85 PathProgramCache]: Analyzing trace with hash 1826258672, now seen corresponding path program 1 times [2021-12-17 07:53:41,853 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-17 07:53:41,853 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [243904199] [2021-12-17 07:53:41,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 07:53:41,854 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-17 07:53:41,855 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-17 07:53:41,861 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) [2021-12-17 07:53:41,863 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-12-17 07:53:41,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 07:53:41,949 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 1 conjunts are in the unsatisfiable core [2021-12-17 07:53:41,952 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 07:53:42,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 07:53:42,019 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-17 07:53:42,019 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-17 07:53:42,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [243904199] [2021-12-17 07:53:42,021 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [243904199] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 07:53:42,021 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 07:53:42,022 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-17 07:53:42,023 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452075156] [2021-12-17 07:53:42,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 07:53:42,026 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-17 07:53:42,027 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-17 07:53:42,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-17 07:53:42,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-17 07:53:42,055 INFO L87 Difference]: Start difference. First operand has 29 states, 24 states have (on average 1.5833333333333333) internal successors, (38), 25 states have internal predecessors, (38), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-17 07:53:42,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 07:53:42,077 INFO L93 Difference]: Finished difference Result 55 states and 82 transitions. [2021-12-17 07:53:42,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-17 07:53:42,079 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), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2021-12-17 07:53:42,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 07:53:42,084 INFO L225 Difference]: With dead ends: 55 [2021-12-17 07:53:42,084 INFO L226 Difference]: Without dead ends: 26 [2021-12-17 07:53:42,087 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-17 07:53:42,090 INFO L933 BasicCegarLoop]: 37 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, 37 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 [2021-12-17 07:53:42,092 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 07:53:42,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-12-17 07:53:42,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2021-12-17 07:53:42,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 22 states have (on average 1.3636363636363635) internal successors, (30), 22 states have internal predecessors, (30), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-17 07:53:42,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 34 transitions. [2021-12-17 07:53:42,129 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 34 transitions. Word has length 13 [2021-12-17 07:53:42,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 07:53:42,129 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 34 transitions. [2021-12-17 07:53:42,130 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), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-17 07:53:42,130 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 34 transitions. [2021-12-17 07:53:42,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-12-17 07:53:42,131 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 07:53:42,131 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 07:53:42,139 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-12-17 07:53:42,332 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-17 07:53:42,332 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 07:53:42,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 07:53:42,333 INFO L85 PathProgramCache]: Analyzing trace with hash -503165124, now seen corresponding path program 1 times [2021-12-17 07:53:42,334 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-17 07:53:42,334 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1882660262] [2021-12-17 07:53:42,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 07:53:42,334 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-17 07:53:42,335 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-17 07:53:42,336 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) [2021-12-17 07:53:42,338 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-12-17 07:53:42,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 07:53:42,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-17 07:53:42,411 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 07:53:42,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 07:53:42,490 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-17 07:53:42,490 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-17 07:53:42,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1882660262] [2021-12-17 07:53:42,490 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1882660262] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 07:53:42,491 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 07:53:42,491 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-17 07:53:42,491 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419837397] [2021-12-17 07:53:42,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 07:53:42,492 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-17 07:53:42,492 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-17 07:53:42,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-17 07:53:42,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-17 07:53:42,493 INFO L87 Difference]: Start difference. First operand 26 states and 34 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-17 07:53:42,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 07:53:42,524 INFO L93 Difference]: Finished difference Result 38 states and 48 transitions. [2021-12-17 07:53:42,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-17 07:53:42,526 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2021-12-17 07:53:42,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 07:53:42,527 INFO L225 Difference]: With dead ends: 38 [2021-12-17 07:53:42,528 INFO L226 Difference]: Without dead ends: 29 [2021-12-17 07:53:42,528 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-17 07:53:42,529 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 0 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 07:53:42,530 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 92 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 07:53:42,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-12-17 07:53:42,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2021-12-17 07:53:42,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 24 states have (on average 1.3333333333333333) internal successors, (32), 24 states have internal predecessors, (32), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-17 07:53:42,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 38 transitions. [2021-12-17 07:53:42,536 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 38 transitions. Word has length 14 [2021-12-17 07:53:42,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 07:53:42,537 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 38 transitions. [2021-12-17 07:53:42,537 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-17 07:53:42,537 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 38 transitions. [2021-12-17 07:53:42,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-12-17 07:53:42,538 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 07:53:42,538 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 07:53:42,556 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-12-17 07:53:42,753 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-17 07:53:42,754 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 07:53:42,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 07:53:42,755 INFO L85 PathProgramCache]: Analyzing trace with hash 25086925, now seen corresponding path program 1 times [2021-12-17 07:53:42,755 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-17 07:53:42,755 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [543613302] [2021-12-17 07:53:42,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 07:53:42,756 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-17 07:53:42,756 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-17 07:53:42,757 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) [2021-12-17 07:53:42,759 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-12-17 07:53:42,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 07:53:42,808 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 11 conjunts are in the unsatisfiable core [2021-12-17 07:53:42,811 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 07:53:43,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 07:53:43,017 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-17 07:53:43,017 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-17 07:53:43,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [543613302] [2021-12-17 07:53:43,018 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [543613302] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 07:53:43,018 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 07:53:43,018 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-17 07:53:43,018 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930881067] [2021-12-17 07:53:43,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 07:53:43,019 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-17 07:53:43,019 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-17 07:53:43,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-17 07:53:43,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-17 07:53:43,020 INFO L87 Difference]: Start difference. First operand 29 states and 38 transitions. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-17 07:53:43,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 07:53:43,128 INFO L93 Difference]: Finished difference Result 68 states and 87 transitions. [2021-12-17 07:53:43,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 07:53:43,130 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2021-12-17 07:53:43,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 07:53:43,131 INFO L225 Difference]: With dead ends: 68 [2021-12-17 07:53:43,131 INFO L226 Difference]: Without dead ends: 43 [2021-12-17 07:53:43,131 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-12-17 07:53:43,132 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 24 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 13 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-17 07:53:43,133 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 107 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 13 Unchecked, 0.1s Time] [2021-12-17 07:53:43,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-12-17 07:53:43,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 31. [2021-12-17 07:53:43,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 25 states have (on average 1.32) internal successors, (33), 26 states have internal predecessors, (33), 2 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-17 07:53:43,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 40 transitions. [2021-12-17 07:53:43,140 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 40 transitions. Word has length 15 [2021-12-17 07:53:43,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 07:53:43,140 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 40 transitions. [2021-12-17 07:53:43,140 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-17 07:53:43,140 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 40 transitions. [2021-12-17 07:53:43,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-12-17 07:53:43,141 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 07:53:43,141 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 07:53:43,154 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-12-17 07:53:43,347 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-17 07:53:43,348 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 07:53:43,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 07:53:43,348 INFO L85 PathProgramCache]: Analyzing trace with hash 1897305304, now seen corresponding path program 1 times [2021-12-17 07:53:43,348 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-17 07:53:43,349 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [196268928] [2021-12-17 07:53:43,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 07:53:43,349 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-17 07:53:43,349 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-17 07:53:43,350 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) [2021-12-17 07:53:43,352 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-12-17 07:53:43,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 07:53:43,431 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 11 conjunts are in the unsatisfiable core [2021-12-17 07:53:43,433 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 07:53:43,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 07:53:43,543 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-17 07:53:43,543 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-17 07:53:43,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [196268928] [2021-12-17 07:53:43,544 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [196268928] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 07:53:43,544 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 07:53:43,544 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-17 07:53:43,544 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456015754] [2021-12-17 07:53:43,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 07:53:43,545 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-17 07:53:43,545 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-17 07:53:43,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-17 07:53:43,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-17 07:53:43,546 INFO L87 Difference]: Start difference. First operand 31 states and 40 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-17 07:53:43,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 07:53:43,681 INFO L93 Difference]: Finished difference Result 57 states and 72 transitions. [2021-12-17 07:53:43,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 07:53:43,681 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2021-12-17 07:53:43,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 07:53:43,682 INFO L225 Difference]: With dead ends: 57 [2021-12-17 07:53:43,682 INFO L226 Difference]: Without dead ends: 30 [2021-12-17 07:53:43,683 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-12-17 07:53:43,684 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 26 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 17 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 07:53:43,684 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 88 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 17 Unchecked, 0.0s Time] [2021-12-17 07:53:43,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-12-17 07:53:43,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2021-12-17 07:53:43,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 23 states have (on average 1.3043478260869565) internal successors, (30), 24 states have internal predecessors, (30), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-17 07:53:43,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 35 transitions. [2021-12-17 07:53:43,689 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 35 transitions. Word has length 16 [2021-12-17 07:53:43,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 07:53:43,689 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 35 transitions. [2021-12-17 07:53:43,690 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-17 07:53:43,690 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 35 transitions. [2021-12-17 07:53:43,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-12-17 07:53:43,690 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 07:53:43,690 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 07:53:43,705 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-12-17 07:53:43,900 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-17 07:53:43,901 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 07:53:43,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 07:53:43,901 INFO L85 PathProgramCache]: Analyzing trace with hash -538621340, now seen corresponding path program 1 times [2021-12-17 07:53:43,902 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-17 07:53:43,902 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [518442786] [2021-12-17 07:53:43,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 07:53:43,902 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-17 07:53:43,902 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-17 07:53:43,903 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) [2021-12-17 07:53:43,905 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-12-17 07:53:43,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 07:53:43,953 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-17 07:53:43,955 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 07:53:44,008 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-17 07:53:44,008 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-17 07:53:44,009 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-17 07:53:44,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [518442786] [2021-12-17 07:53:44,009 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [518442786] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 07:53:44,009 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 07:53:44,009 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-17 07:53:44,010 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538686630] [2021-12-17 07:53:44,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 07:53:44,010 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-17 07:53:44,010 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-17 07:53:44,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-17 07:53:44,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-17 07:53:44,011 INFO L87 Difference]: Start difference. First operand 28 states and 35 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-17 07:53:44,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 07:53:44,024 INFO L93 Difference]: Finished difference Result 38 states and 46 transitions. [2021-12-17 07:53:44,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-17 07:53:44,025 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 22 [2021-12-17 07:53:44,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 07:53:44,026 INFO L225 Difference]: With dead ends: 38 [2021-12-17 07:53:44,026 INFO L226 Difference]: Without dead ends: 29 [2021-12-17 07:53:44,026 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-17 07:53:44,027 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 0 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 07:53:44,028 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 89 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 07:53:44,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-12-17 07:53:44,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2021-12-17 07:53:44,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 24 states have (on average 1.2916666666666667) internal successors, (31), 24 states have internal predecessors, (31), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-17 07:53:44,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 36 transitions. [2021-12-17 07:53:44,032 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 36 transitions. Word has length 22 [2021-12-17 07:53:44,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 07:53:44,032 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 36 transitions. [2021-12-17 07:53:44,032 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-17 07:53:44,032 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 36 transitions. [2021-12-17 07:53:44,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-12-17 07:53:44,033 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 07:53:44,033 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 07:53:44,052 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-12-17 07:53:44,243 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-17 07:53:44,244 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 07:53:44,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 07:53:44,244 INFO L85 PathProgramCache]: Analyzing trace with hash 1336928685, now seen corresponding path program 1 times [2021-12-17 07:53:44,245 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-17 07:53:44,245 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1291077760] [2021-12-17 07:53:44,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 07:53:44,245 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-17 07:53:44,245 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-17 07:53:44,246 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) [2021-12-17 07:53:44,247 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-12-17 07:53:44,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 07:53:44,300 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 11 conjunts are in the unsatisfiable core [2021-12-17 07:53:44,306 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 07:53:44,454 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-17 07:53:44,454 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-17 07:53:44,455 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-17 07:53:44,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1291077760] [2021-12-17 07:53:44,455 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1291077760] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 07:53:44,455 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 07:53:44,455 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-17 07:53:44,455 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760100233] [2021-12-17 07:53:44,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 07:53:44,456 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-17 07:53:44,456 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-17 07:53:44,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-17 07:53:44,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-17 07:53:44,457 INFO L87 Difference]: Start difference. First operand 29 states and 36 transitions. Second operand has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-17 07:53:44,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 07:53:44,573 INFO L93 Difference]: Finished difference Result 43 states and 52 transitions. [2021-12-17 07:53:44,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 07:53:44,575 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 23 [2021-12-17 07:53:44,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 07:53:44,576 INFO L225 Difference]: With dead ends: 43 [2021-12-17 07:53:44,576 INFO L226 Difference]: Without dead ends: 29 [2021-12-17 07:53:44,576 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-12-17 07:53:44,577 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 22 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 11 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 07:53:44,577 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 93 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 11 Unchecked, 0.0s Time] [2021-12-17 07:53:44,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-12-17 07:53:44,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2021-12-17 07:53:44,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 24 states have (on average 1.25) internal successors, (30), 24 states have internal predecessors, (30), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-17 07:53:44,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 35 transitions. [2021-12-17 07:53:44,587 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 35 transitions. Word has length 23 [2021-12-17 07:53:44,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 07:53:44,588 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 35 transitions. [2021-12-17 07:53:44,588 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-17 07:53:44,588 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 35 transitions. [2021-12-17 07:53:44,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-12-17 07:53:44,589 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 07:53:44,589 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 07:53:44,601 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-12-17 07:53:44,799 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-17 07:53:44,799 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 07:53:44,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 07:53:44,800 INFO L85 PathProgramCache]: Analyzing trace with hash -636835510, now seen corresponding path program 1 times [2021-12-17 07:53:44,800 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-17 07:53:44,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [371499291] [2021-12-17 07:53:44,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 07:53:44,800 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-17 07:53:44,800 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-17 07:53:44,801 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) [2021-12-17 07:53:44,804 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-12-17 07:53:44,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 07:53:44,852 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-17 07:53:44,854 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 07:53:44,935 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-12-17 07:53:44,936 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-17 07:53:44,936 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-17 07:53:44,936 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [371499291] [2021-12-17 07:53:44,936 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [371499291] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 07:53:44,936 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 07:53:44,936 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 07:53:44,936 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318647424] [2021-12-17 07:53:44,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 07:53:44,937 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 07:53:44,937 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-17 07:53:44,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 07:53:44,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 07:53:44,938 INFO L87 Difference]: Start difference. First operand 29 states and 35 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-17 07:53:44,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 07:53:44,944 INFO L93 Difference]: Finished difference Result 39 states and 45 transitions. [2021-12-17 07:53:44,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 07:53:44,945 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 24 [2021-12-17 07:53:44,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 07:53:44,945 INFO L225 Difference]: With dead ends: 39 [2021-12-17 07:53:44,945 INFO L226 Difference]: Without dead ends: 29 [2021-12-17 07:53:44,946 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 07:53:44,946 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 12 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 07:53:44,947 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 43 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 07:53:44,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-12-17 07:53:44,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2021-12-17 07:53:44,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 24 states have (on average 1.2083333333333333) internal successors, (29), 24 states have internal predecessors, (29), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-17 07:53:44,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 34 transitions. [2021-12-17 07:53:44,950 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 34 transitions. Word has length 24 [2021-12-17 07:53:44,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 07:53:44,951 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 34 transitions. [2021-12-17 07:53:44,951 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-17 07:53:44,951 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 34 transitions. [2021-12-17 07:53:44,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-12-17 07:53:44,951 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 07:53:44,952 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 07:53:44,965 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-12-17 07:53:45,162 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-17 07:53:45,162 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 07:53:45,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 07:53:45,163 INFO L85 PathProgramCache]: Analyzing trace with hash -579577208, now seen corresponding path program 1 times [2021-12-17 07:53:45,163 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-17 07:53:45,163 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1105821089] [2021-12-17 07:53:45,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 07:53:45,163 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-17 07:53:45,164 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-17 07:53:45,164 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) [2021-12-17 07:53:45,166 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-12-17 07:53:45,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 07:53:45,218 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-17 07:53:45,219 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 07:53:45,305 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-12-17 07:53:45,305 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-17 07:53:45,305 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-17 07:53:45,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1105821089] [2021-12-17 07:53:45,305 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1105821089] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 07:53:45,306 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 07:53:45,306 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-17 07:53:45,306 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53068723] [2021-12-17 07:53:45,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 07:53:45,306 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-17 07:53:45,307 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-17 07:53:45,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-17 07:53:45,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-17 07:53:45,308 INFO L87 Difference]: Start difference. First operand 29 states and 34 transitions. Second operand has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-17 07:53:45,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 07:53:45,384 INFO L93 Difference]: Finished difference Result 41 states and 45 transitions. [2021-12-17 07:53:45,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 07:53:45,386 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), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 24 [2021-12-17 07:53:45,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 07:53:45,386 INFO L225 Difference]: With dead ends: 41 [2021-12-17 07:53:45,386 INFO L226 Difference]: Without dead ends: 38 [2021-12-17 07:53:45,387 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-12-17 07:53:45,387 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 34 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 07:53:45,388 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 113 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 07:53:45,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-12-17 07:53:45,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 31. [2021-12-17 07:53:45,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 26 states have (on average 1.1923076923076923) internal successors, (31), 26 states have internal predecessors, (31), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-17 07:53:45,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 36 transitions. [2021-12-17 07:53:45,392 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 36 transitions. Word has length 24 [2021-12-17 07:53:45,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 07:53:45,392 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 36 transitions. [2021-12-17 07:53:45,392 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), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-17 07:53:45,392 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 36 transitions. [2021-12-17 07:53:45,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-12-17 07:53:45,393 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 07:53:45,393 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 07:53:45,407 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-12-17 07:53:45,603 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-17 07:53:45,604 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 07:53:45,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 07:53:45,604 INFO L85 PathProgramCache]: Analyzing trace with hash 2025711360, now seen corresponding path program 1 times [2021-12-17 07:53:45,604 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-17 07:53:45,605 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1786965203] [2021-12-17 07:53:45,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 07:53:45,605 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-17 07:53:45,605 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-17 07:53:45,606 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) [2021-12-17 07:53:45,606 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-12-17 07:53:45,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 07:53:45,659 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 11 conjunts are in the unsatisfiable core [2021-12-17 07:53:45,660 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 07:53:45,773 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-17 07:53:45,774 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-17 07:53:45,774 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-17 07:53:45,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1786965203] [2021-12-17 07:53:45,774 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1786965203] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 07:53:45,774 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 07:53:45,774 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-17 07:53:45,774 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401255635] [2021-12-17 07:53:45,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 07:53:45,775 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-17 07:53:45,775 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-17 07:53:45,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-17 07:53:45,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-17 07:53:45,775 INFO L87 Difference]: Start difference. First operand 31 states and 36 transitions. Second operand has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-17 07:53:45,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 07:53:45,900 INFO L93 Difference]: Finished difference Result 42 states and 46 transitions. [2021-12-17 07:53:45,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 07:53:45,900 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 24 [2021-12-17 07:53:45,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 07:53:45,901 INFO L225 Difference]: With dead ends: 42 [2021-12-17 07:53:45,901 INFO L226 Difference]: Without dead ends: 23 [2021-12-17 07:53:45,901 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-12-17 07:53:45,902 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 22 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 13 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-17 07:53:45,902 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 81 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 13 Unchecked, 0.1s Time] [2021-12-17 07:53:45,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-12-17 07:53:45,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2021-12-17 07:53:45,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 19 states have (on average 1.0) internal successors, (19), 19 states have internal predecessors, (19), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-17 07:53:45,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2021-12-17 07:53:45,905 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 24 [2021-12-17 07:53:45,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 07:53:45,906 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2021-12-17 07:53:45,906 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-17 07:53:45,906 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2021-12-17 07:53:45,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-12-17 07:53:45,906 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 07:53:45,907 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 07:53:45,922 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-12-17 07:53:46,116 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-17 07:53:46,117 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 07:53:46,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 07:53:46,117 INFO L85 PathProgramCache]: Analyzing trace with hash 1580504541, now seen corresponding path program 1 times [2021-12-17 07:53:46,117 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-17 07:53:46,118 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [744886685] [2021-12-17 07:53:46,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 07:53:46,118 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-17 07:53:46,118 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-17 07:53:46,119 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) [2021-12-17 07:53:46,123 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-12-17 07:53:46,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 07:53:46,185 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 17 conjunts are in the unsatisfiable core [2021-12-17 07:53:46,186 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 07:53:46,348 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-12-17 07:53:46,348 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-17 07:53:46,348 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-17 07:53:46,348 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [744886685] [2021-12-17 07:53:46,348 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [744886685] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 07:53:46,348 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 07:53:46,348 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-17 07:53:46,349 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741881158] [2021-12-17 07:53:46,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 07:53:46,349 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-17 07:53:46,349 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-17 07:53:46,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-17 07:53:46,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-17 07:53:46,352 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand has 10 states, 10 states have (on average 1.9) internal successors, (19), 10 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-17 07:53:46,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 07:53:46,468 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2021-12-17 07:53:46,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-17 07:53:46,469 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), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 28 [2021-12-17 07:53:46,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 07:53:46,469 INFO L225 Difference]: With dead ends: 23 [2021-12-17 07:53:46,469 INFO L226 Difference]: Without dead ends: 0 [2021-12-17 07:53:46,470 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2021-12-17 07:53:46,470 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 23 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 07:53:46,470 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 111 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 07:53:46,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-12-17 07:53:46,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-12-17 07:53:46,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2021-12-17 07:53:46,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-12-17 07:53:46,471 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 28 [2021-12-17 07:53:46,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 07:53:46,471 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-17 07:53:46,472 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), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-17 07:53:46,472 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-12-17 07:53:46,472 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-12-17 07:53:46,474 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-17 07:53:46,486 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-12-17 07:53:46,674 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-17 07:53:46,676 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-12-17 07:53:46,790 INFO L854 garLoopResultBuilder]: At program point L40(line 40) the Hoare annotation is: (and (= |ULTIMATE.start_fmin_float_~y#1| (fp.neg (_ +zero 8 24))) (= |ULTIMATE.start_fmin_float_~x#1| (_ +zero 8 24))) [2021-12-17 07:53:46,791 INFO L858 garLoopResultBuilder]: For program point L40-1(lines 40 41) no Hoare annotation was computed. [2021-12-17 07:53:46,791 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-12-17 07:53:46,791 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-12-17 07:53:46,791 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-12-17 07:53:46,791 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 72) no Hoare annotation was computed. [2021-12-17 07:53:46,791 INFO L858 garLoopResultBuilder]: For program point L49-1(lines 49 53) no Hoare annotation was computed. [2021-12-17 07:53:46,791 INFO L854 garLoopResultBuilder]: At program point L49-2(lines 49 53) the Hoare annotation is: (let ((.cse0 (fp.neg (_ +zero 8 24)))) (and (= |ULTIMATE.start_fmin_float_~y#1| .cse0) (= |ULTIMATE.start_fmin_float_~x#1| (_ +zero 8 24)) (= |ULTIMATE.start_fmin_float_#res#1| .cse0) |ULTIMATE.start_main_#t~short11#1| (= |ULTIMATE.start_main_~res~0#1| .cse0) (= |ULTIMATE.start___signbit_float_~x#1| .cse0))) [2021-12-17 07:53:46,791 INFO L858 garLoopResultBuilder]: For program point L49-3(lines 49 53) no Hoare annotation was computed. [2021-12-17 07:53:46,791 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-12-17 07:53:46,791 INFO L858 garLoopResultBuilder]: For program point L71(line 71) no Hoare annotation was computed. [2021-12-17 07:53:46,792 INFO L854 garLoopResultBuilder]: At program point L38(line 38) the Hoare annotation is: (and (= |ULTIMATE.start_fmin_float_~y#1| (fp.neg (_ +zero 8 24))) (= |ULTIMATE.start_fmin_float_~x#1| (_ +zero 8 24))) [2021-12-17 07:53:46,792 INFO L858 garLoopResultBuilder]: For program point L38-1(lines 38 39) no Hoare annotation was computed. [2021-12-17 07:53:46,792 INFO L858 garLoopResultBuilder]: For program point L71-2(lines 71 74) no Hoare annotation was computed. [2021-12-17 07:53:46,792 INFO L854 garLoopResultBuilder]: At program point L55(lines 46 56) the Hoare annotation is: (let ((.cse0 (fp.neg (_ +zero 8 24)))) (and (= |ULTIMATE.start_fmin_float_~y#1| .cse0) (= |ULTIMATE.start_fmin_float_~x#1| (_ +zero 8 24)) (= |ULTIMATE.start_fmin_float_#res#1| .cse0) (= |ULTIMATE.start___signbit_float_#res#1| (_ bv1 32)) |ULTIMATE.start_main_#t~short11#1| (= |ULTIMATE.start_main_~res~0#1| .cse0) (= |ULTIMATE.start___signbit_float_~x#1| .cse0) (= (fp ((_ extract 31 31) |ULTIMATE.start___signbit_float_~w~1#1|) ((_ extract 30 23) |ULTIMATE.start___signbit_float_~w~1#1|) ((_ extract 22 0) |ULTIMATE.start___signbit_float_~w~1#1|)) .cse0))) [2021-12-17 07:53:46,792 INFO L861 garLoopResultBuilder]: At program point L76(lines 58 77) the Hoare annotation is: true [2021-12-17 07:53:46,792 INFO L858 garLoopResultBuilder]: For program point L43(line 43) no Hoare annotation was computed. [2021-12-17 07:53:46,792 INFO L858 garLoopResultBuilder]: For program point L43-2(line 43) no Hoare annotation was computed. [2021-12-17 07:53:46,792 INFO L854 garLoopResultBuilder]: At program point L43-3(lines 37 44) the Hoare annotation is: (let ((.cse0 (fp.neg (_ +zero 8 24)))) (and (= |ULTIMATE.start_fmin_float_~y#1| .cse0) (= |ULTIMATE.start_fmin_float_~x#1| (_ +zero 8 24)) (= |ULTIMATE.start_fmin_float_#res#1| .cse0))) [2021-12-17 07:53:46,792 INFO L858 garLoopResultBuilder]: For program point L72(line 72) no Hoare annotation was computed. [2021-12-17 07:53:46,792 INFO L858 garLoopResultBuilder]: For program point L31(lines 31 34) no Hoare annotation was computed. [2021-12-17 07:53:46,792 INFO L858 garLoopResultBuilder]: For program point __fpclassify_floatFINAL(lines 14 35) no Hoare annotation was computed. [2021-12-17 07:53:46,792 INFO L858 garLoopResultBuilder]: For program point L25(lines 25 34) no Hoare annotation was computed. [2021-12-17 07:53:46,792 INFO L858 garLoopResultBuilder]: For program point L17-1(lines 17 21) no Hoare annotation was computed. [2021-12-17 07:53:46,793 INFO L854 garLoopResultBuilder]: At program point L17-2(lines 17 21) the Hoare annotation is: (= __fpclassify_float_~x |__fpclassify_float_#in~x|) [2021-12-17 07:53:46,793 INFO L858 garLoopResultBuilder]: For program point L17-3(lines 14 35) no Hoare annotation was computed. [2021-12-17 07:53:46,793 INFO L858 garLoopResultBuilder]: For program point L28(lines 28 34) no Hoare annotation was computed. [2021-12-17 07:53:46,793 INFO L861 garLoopResultBuilder]: At program point __fpclassify_floatENTRY(lines 14 35) the Hoare annotation is: true [2021-12-17 07:53:46,793 INFO L858 garLoopResultBuilder]: For program point __fpclassify_floatEXIT(lines 14 35) no Hoare annotation was computed. [2021-12-17 07:53:46,796 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 07:53:46,798 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-17 07:53:46,811 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.12 07:53:46 BoogieIcfgContainer [2021-12-17 07:53:46,812 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-17 07:53:46,813 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-17 07:53:46,813 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-17 07:53:46,813 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-17 07:53:46,813 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 07:53:41" (3/4) ... [2021-12-17 07:53:46,815 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-12-17 07:53:46,820 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __fpclassify_float [2021-12-17 07:53:46,824 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2021-12-17 07:53:46,824 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2021-12-17 07:53:46,824 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-12-17 07:53:46,824 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-12-17 07:53:46,841 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: x == \old(x) [2021-12-17 07:53:46,842 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (y == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) && x == ~Pluszero~LONGDOUBLE()) && \result == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) [2021-12-17 07:53:46,842 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((y == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) && x == ~Pluszero~LONGDOUBLE()) && \result == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && aux-res == -0.0f && __signbit_float(res) == 1-aux) && res == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) [2021-12-17 07:53:46,843 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((y == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) && x == ~Pluszero~LONGDOUBLE()) && \result == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && \result == 1bv32) && aux-res == -0.0f && __signbit_float(res) == 1-aux) && res == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) [2021-12-17 07:53:46,857 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-12-17 07:53:46,857 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-17 07:53:46,858 INFO L158 Benchmark]: Toolchain (without parser) took 5778.18ms. Allocated memory was 54.5MB in the beginning and 67.1MB in the end (delta: 12.6MB). Free memory was 31.9MB in the beginning and 41.5MB in the end (delta: -9.7MB). Peak memory consumption was 4.0MB. Max. memory is 16.1GB. [2021-12-17 07:53:46,858 INFO L158 Benchmark]: CDTParser took 0.95ms. Allocated memory is still 54.5MB. Free memory was 36.6MB in the beginning and 36.5MB in the end (delta: 45.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-17 07:53:46,858 INFO L158 Benchmark]: CACSL2BoogieTranslator took 206.35ms. Allocated memory is still 54.5MB. Free memory was 31.7MB in the beginning and 34.2MB in the end (delta: -2.5MB). Peak memory consumption was 9.5MB. Max. memory is 16.1GB. [2021-12-17 07:53:46,858 INFO L158 Benchmark]: Boogie Procedure Inliner took 28.08ms. Allocated memory is still 54.5MB. Free memory was 34.2MB in the beginning and 32.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-17 07:53:46,859 INFO L158 Benchmark]: Boogie Preprocessor took 58.70ms. Allocated memory is still 54.5MB. Free memory was 32.6MB in the beginning and 31.2MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-17 07:53:46,859 INFO L158 Benchmark]: RCFGBuilder took 336.88ms. Allocated memory was 54.5MB in the beginning and 67.1MB in the end (delta: 12.6MB). Free memory was 31.0MB in the beginning and 45.3MB in the end (delta: -14.2MB). Peak memory consumption was 10.0MB. Max. memory is 16.1GB. [2021-12-17 07:53:46,859 INFO L158 Benchmark]: TraceAbstraction took 5091.60ms. Allocated memory is still 67.1MB. Free memory was 44.8MB in the beginning and 45.3MB in the end (delta: -510.1kB). Peak memory consumption was 20.2MB. Max. memory is 16.1GB. [2021-12-17 07:53:46,859 INFO L158 Benchmark]: Witness Printer took 44.41ms. Allocated memory is still 67.1MB. Free memory was 44.9MB in the beginning and 41.5MB in the end (delta: 3.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-12-17 07:53:46,861 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.95ms. Allocated memory is still 54.5MB. Free memory was 36.6MB in the beginning and 36.5MB in the end (delta: 45.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 206.35ms. Allocated memory is still 54.5MB. Free memory was 31.7MB in the beginning and 34.2MB in the end (delta: -2.5MB). Peak memory consumption was 9.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 28.08ms. Allocated memory is still 54.5MB. Free memory was 34.2MB in the beginning and 32.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 58.70ms. Allocated memory is still 54.5MB. Free memory was 32.6MB in the beginning and 31.2MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 336.88ms. Allocated memory was 54.5MB in the beginning and 67.1MB in the end (delta: 12.6MB). Free memory was 31.0MB in the beginning and 45.3MB in the end (delta: -14.2MB). Peak memory consumption was 10.0MB. Max. memory is 16.1GB. * TraceAbstraction took 5091.60ms. Allocated memory is still 67.1MB. Free memory was 44.8MB in the beginning and 45.3MB in the end (delta: -510.1kB). Peak memory consumption was 20.2MB. Max. memory is 16.1GB. * Witness Printer took 44.41ms. Allocated memory is still 67.1MB. Free memory was 44.9MB in the beginning and 41.5MB in the end (delta: 3.4MB). Peak memory consumption was 4.2MB. 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 - PositiveResult [Line: 72]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 29 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 5.0s, OverallIterations: 10, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 173 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 163 mSDsluCounter, 854 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 54 IncrementalHoareTripleChecker+Unchecked, 585 mSDsCounter, 11 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 179 IncrementalHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 11 mSolverCounterUnsat, 269 mSDtfsCounter, 179 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 211 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=31occurred in iteration=3, InterpolantAutomatonStates: 57, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 21 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 16 PreInvPairs, 23 NumberOfFragments, 88 HoareAnnotationTreeSize, 16 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 40 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 203 NumberOfCodeBlocks, 203 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 193 ConstructedInterpolants, 14 QuantifiedInterpolants, 612 SizeOfPredicates, 46 NumberOfNonLiveVariables, 710 ConjunctsInSsa, 83 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 36/36 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: x == \old(x) - InvariantResult [Line: 49]: Loop Invariant Derived loop invariant: ((((y == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) && x == ~Pluszero~LONGDOUBLE()) && \result == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && aux-res == -0.0f && __signbit_float(res) == 1-aux) && res == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) - InvariantResult [Line: 37]: Loop Invariant Derived loop invariant: (y == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) && x == ~Pluszero~LONGDOUBLE()) && \result == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) - InvariantResult [Line: 58]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 46]: Loop Invariant Derived loop invariant: ((((((y == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) && x == ~Pluszero~LONGDOUBLE()) && \result == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && \result == 1bv32) && aux-res == -0.0f && __signbit_float(res) == 1-aux) && res == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && x == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE())) && ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) == ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) RESULT: Ultimate proved your program to be correct! [2021-12-17 07:53:46,889 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 Writing output log to file Ultimate.log Result: TRUE