./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-newlib/float_req_bl_1270d.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b 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_1270d.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 38626a16356f67aaf09cedb2585feb986fe72ed23b75358e37f00f94c56ef8f0 --- Real Ultimate output --- This is Ultimate 0.2.2-839c364b5d67a0f615c82cb70ab247790648d4a9-839c364 [2021-12-14 13:34:39,404 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-14 13:34:39,406 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-14 13:34:39,430 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-14 13:34:39,430 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-14 13:34:39,431 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-14 13:34:39,439 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-14 13:34:39,441 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-14 13:34:39,442 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-14 13:34:39,442 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-14 13:34:39,443 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-14 13:34:39,444 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-14 13:34:39,444 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-14 13:34:39,445 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-14 13:34:39,446 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-14 13:34:39,446 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-14 13:34:39,447 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-14 13:34:39,448 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-14 13:34:39,449 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-14 13:34:39,455 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-14 13:34:39,456 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-14 13:34:39,458 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-14 13:34:39,459 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-14 13:34:39,459 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-14 13:34:39,461 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-14 13:34:39,461 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-14 13:34:39,461 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-14 13:34:39,462 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-14 13:34:39,462 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-14 13:34:39,463 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-14 13:34:39,463 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-14 13:34:39,463 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-14 13:34:39,464 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-14 13:34:39,464 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-14 13:34:39,465 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-14 13:34:39,465 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-14 13:34:39,465 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-14 13:34:39,466 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-14 13:34:39,466 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-14 13:34:39,466 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-14 13:34:39,467 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-14 13:34:39,472 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-14 13:34:39,496 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-14 13:34:39,497 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-14 13:34:39,497 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-14 13:34:39,497 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-14 13:34:39,498 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-14 13:34:39,498 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-14 13:34:39,498 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-14 13:34:39,499 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-14 13:34:39,499 INFO L138 SettingsManager]: * Use SBE=true [2021-12-14 13:34:39,499 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-14 13:34:39,500 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-14 13:34:39,500 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-14 13:34:39,500 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-14 13:34:39,500 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-14 13:34:39,500 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-14 13:34:39,500 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-14 13:34:39,501 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-14 13:34:39,501 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-14 13:34:39,501 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-14 13:34:39,501 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-14 13:34:39,501 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-14 13:34:39,501 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-14 13:34:39,502 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-14 13:34:39,502 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-14 13:34:39,502 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 13:34:39,502 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-14 13:34:39,502 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-14 13:34:39,504 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-14 13:34:39,504 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-14 13:34:39,504 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-14 13:34:39,504 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-14 13:34:39,504 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-14 13:34:39,505 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-14 13:34:39,505 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-14 13:34:39,505 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 38626a16356f67aaf09cedb2585feb986fe72ed23b75358e37f00f94c56ef8f0 [2021-12-14 13:34:39,685 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-14 13:34:39,740 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-14 13:34:39,742 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-14 13:34:39,743 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-14 13:34:39,744 INFO L275 PluginConnector]: CDTParser initialized [2021-12-14 13:34:39,744 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/float_req_bl_1270d.c [2021-12-14 13:34:39,822 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c4440dc8d/c65fd7d2afad40538c34ec58a0c374b7/FLAG70a45cb0e [2021-12-14 13:34:40,181 INFO L306 CDTParser]: Found 1 translation units. [2021-12-14 13:34:40,181 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/float_req_bl_1270d.c [2021-12-14 13:34:40,186 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c4440dc8d/c65fd7d2afad40538c34ec58a0c374b7/FLAG70a45cb0e [2021-12-14 13:34:40,629 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c4440dc8d/c65fd7d2afad40538c34ec58a0c374b7 [2021-12-14 13:34:40,631 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-14 13:34:40,632 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-14 13:34:40,650 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-14 13:34:40,650 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-14 13:34:40,653 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-14 13:34:40,653 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 01:34:40" (1/1) ... [2021-12-14 13:34:40,654 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@90a7b08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:34:40, skipping insertion in model container [2021-12-14 13:34:40,654 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 01:34:40" (1/1) ... [2021-12-14 13:34:40,659 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-14 13:34:40,673 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-14 13:34:40,820 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_1270d.c[4704,4717] [2021-12-14 13:34:40,822 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 13:34:40,832 INFO L203 MainTranslator]: Completed pre-run [2021-12-14 13:34:40,863 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_1270d.c[4704,4717] [2021-12-14 13:34:40,863 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 13:34:40,872 INFO L208 MainTranslator]: Completed translation [2021-12-14 13:34:40,873 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:34:40 WrapperNode [2021-12-14 13:34:40,873 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-14 13:34:40,874 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-14 13:34:40,874 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-14 13:34:40,874 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-14 13:34:40,888 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:34:40" (1/1) ... [2021-12-14 13:34:40,895 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:34:40" (1/1) ... [2021-12-14 13:34:40,920 INFO L137 Inliner]: procedures = 18, calls = 75, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 254 [2021-12-14 13:34:40,921 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-14 13:34:40,922 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-14 13:34:40,922 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-14 13:34:40,922 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-14 13:34:40,928 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:34:40" (1/1) ... [2021-12-14 13:34:40,928 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:34:40" (1/1) ... [2021-12-14 13:34:40,933 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:34:40" (1/1) ... [2021-12-14 13:34:40,946 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:34:40" (1/1) ... [2021-12-14 13:34:40,959 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:34:40" (1/1) ... [2021-12-14 13:34:40,971 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:34:40" (1/1) ... [2021-12-14 13:34:40,972 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:34:40" (1/1) ... [2021-12-14 13:34:40,975 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-14 13:34:40,975 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-14 13:34:40,975 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-14 13:34:40,976 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-14 13:34:40,978 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:34:40" (1/1) ... [2021-12-14 13:34:40,983 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 13:34:40,990 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 13:34:41,003 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) [2021-12-14 13:34:41,005 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 [2021-12-14 13:34:41,031 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-14 13:34:41,032 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-14 13:34:41,032 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-14 13:34:41,032 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-12-14 13:34:41,032 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-14 13:34:41,032 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-12-14 13:34:41,033 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-14 13:34:41,033 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-14 13:34:41,033 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-14 13:34:41,033 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-14 13:34:41,033 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_sqrtf [2021-12-14 13:34:41,033 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_sqrtf [2021-12-14 13:34:41,096 INFO L236 CfgBuilder]: Building ICFG [2021-12-14 13:34:41,097 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-14 13:34:41,334 INFO L277 CfgBuilder]: Performing block encoding [2021-12-14 13:34:41,339 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-14 13:34:41,339 INFO L301 CfgBuilder]: Removed 34 assume(true) statements. [2021-12-14 13:34:41,340 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 01:34:41 BoogieIcfgContainer [2021-12-14 13:34:41,340 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-14 13:34:41,341 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-14 13:34:41,341 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-14 13:34:41,349 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-14 13:34:41,350 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 01:34:40" (1/3) ... [2021-12-14 13:34:41,350 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fd3ae76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 01:34:41, skipping insertion in model container [2021-12-14 13:34:41,350 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:34:40" (2/3) ... [2021-12-14 13:34:41,351 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fd3ae76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 01:34:41, skipping insertion in model container [2021-12-14 13:34:41,351 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 01:34:41" (3/3) ... [2021-12-14 13:34:41,352 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1270d.c [2021-12-14 13:34:41,355 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-14 13:34:41,355 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-14 13:34:41,386 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-14 13:34:41,390 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 [2021-12-14 13:34:41,391 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-14 13:34:41,402 INFO L276 IsEmpty]: Start isEmpty. Operand has 89 states, 84 states have (on average 1.6904761904761905) internal successors, (142), 85 states have internal predecessors, (142), 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) [2021-12-14 13:34:41,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-12-14 13:34:41,405 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 13:34:41,406 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 13:34:41,406 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 13:34:41,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 13:34:41,410 INFO L85 PathProgramCache]: Analyzing trace with hash -1724151004, now seen corresponding path program 1 times [2021-12-14 13:34:41,415 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 13:34:41,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136414598] [2021-12-14 13:34:41,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 13:34:41,416 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 13:34:41,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 13:34:41,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 13:34:41,533 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 13:34:41,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136414598] [2021-12-14 13:34:41,533 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2136414598] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 13:34:41,534 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 13:34:41,534 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-14 13:34:41,535 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142452150] [2021-12-14 13:34:41,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 13:34:41,539 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-14 13:34:41,539 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 13:34:41,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-14 13:34:41,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-14 13:34:41,564 INFO L87 Difference]: Start difference. First operand has 89 states, 84 states have (on average 1.6904761904761905) internal successors, (142), 85 states have internal predecessors, (142), 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 8.0) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 13:34:41,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 13:34:41,609 INFO L93 Difference]: Finished difference Result 176 states and 292 transitions. [2021-12-14 13:34:41,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-14 13:34:41,611 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-12-14 13:34:41,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 13:34:41,617 INFO L225 Difference]: With dead ends: 176 [2021-12-14 13:34:41,617 INFO L226 Difference]: Without dead ends: 86 [2021-12-14 13:34:41,620 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-14 13:34:41,622 INFO L933 BasicCegarLoop]: 111 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, 111 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 [2021-12-14 13:34:41,622 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 13:34:41,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2021-12-14 13:34:41,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2021-12-14 13:34:41,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 82 states have (on average 1.2682926829268293) internal successors, (104), 82 states have internal predecessors, (104), 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) [2021-12-14 13:34:41,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 108 transitions. [2021-12-14 13:34:41,652 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 108 transitions. Word has length 16 [2021-12-14 13:34:41,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 13:34:41,653 INFO L470 AbstractCegarLoop]: Abstraction has 86 states and 108 transitions. [2021-12-14 13:34:41,653 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 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) [2021-12-14 13:34:41,653 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 108 transitions. [2021-12-14 13:34:41,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-12-14 13:34:41,654 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 13:34:41,654 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 13:34:41,654 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-14 13:34:41,654 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 13:34:41,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 13:34:41,655 INFO L85 PathProgramCache]: Analyzing trace with hash -927967701, now seen corresponding path program 1 times [2021-12-14 13:34:41,655 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 13:34:41,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893351091] [2021-12-14 13:34:41,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 13:34:41,656 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 13:34:41,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 13:34:41,725 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-14 13:34:41,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-14 13:34:41,807 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-14 13:34:41,811 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-14 13:34:41,812 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-14 13:34:41,814 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-14 13:34:41,817 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-12-14 13:34:41,819 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-14 13:34:41,839 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 01:34:41 BoogieIcfgContainer [2021-12-14 13:34:41,839 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-14 13:34:41,840 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-14 13:34:41,840 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-14 13:34:41,840 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-14 13:34:41,840 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 01:34:41" (3/4) ... [2021-12-14 13:34:41,842 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-12-14 13:34:41,842 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-14 13:34:41,843 INFO L158 Benchmark]: Toolchain (without parser) took 1210.80ms. Allocated memory was 96.5MB in the beginning and 117.4MB in the end (delta: 21.0MB). Free memory was 60.2MB in the beginning and 72.6MB in the end (delta: -12.3MB). Peak memory consumption was 8.7MB. Max. memory is 16.1GB. [2021-12-14 13:34:41,844 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 96.5MB. Free memory is still 76.7MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-14 13:34:41,844 INFO L158 Benchmark]: CACSL2BoogieTranslator took 222.70ms. Allocated memory is still 96.5MB. Free memory was 60.0MB in the beginning and 46.4MB in the end (delta: 13.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-12-14 13:34:41,844 INFO L158 Benchmark]: Boogie Procedure Inliner took 47.55ms. Allocated memory was 96.5MB in the beginning and 117.4MB in the end (delta: 21.0MB). Free memory was 46.4MB in the beginning and 95.1MB in the end (delta: -48.8MB). Peak memory consumption was 5.5MB. Max. memory is 16.1GB. [2021-12-14 13:34:41,845 INFO L158 Benchmark]: Boogie Preprocessor took 53.09ms. Allocated memory is still 117.4MB. Free memory was 95.1MB in the beginning and 92.7MB in the end (delta: 2.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-12-14 13:34:41,845 INFO L158 Benchmark]: RCFGBuilder took 365.06ms. Allocated memory is still 117.4MB. Free memory was 92.7MB in the beginning and 72.6MB in the end (delta: 20.2MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2021-12-14 13:34:41,845 INFO L158 Benchmark]: TraceAbstraction took 498.04ms. Allocated memory is still 117.4MB. Free memory was 72.1MB in the beginning and 73.0MB in the end (delta: -971.4kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-14 13:34:41,846 INFO L158 Benchmark]: Witness Printer took 2.76ms. Allocated memory is still 117.4MB. Free memory was 73.0MB in the beginning and 72.6MB in the end (delta: 471.1kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-14 13:34:41,848 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 96.5MB. Free memory is still 76.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 222.70ms. Allocated memory is still 96.5MB. Free memory was 60.0MB in the beginning and 46.4MB in the end (delta: 13.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 47.55ms. Allocated memory was 96.5MB in the beginning and 117.4MB in the end (delta: 21.0MB). Free memory was 46.4MB in the beginning and 95.1MB in the end (delta: -48.8MB). Peak memory consumption was 5.5MB. Max. memory is 16.1GB. * Boogie Preprocessor took 53.09ms. Allocated memory is still 117.4MB. Free memory was 95.1MB in the beginning and 92.7MB in the end (delta: 2.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 365.06ms. Allocated memory is still 117.4MB. Free memory was 92.7MB in the beginning and 72.6MB in the end (delta: 20.2MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 498.04ms. Allocated memory is still 117.4MB. Free memory was 72.1MB in the beginning and 73.0MB in the end (delta: -971.4kB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 2.76ms. Allocated memory is still 117.4MB. Free memory was 73.0MB in the beginning and 72.6MB in the end (delta: 471.1kB). Peak memory consumption was 2.1MB. 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: 236]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryArithmeticFLOAToperation at line 120, overapproximation of bitwiseAnd at line 220. Possible FailurePath: [L14] static const float one_sqrt = 1.0, tiny_sqrt = 1.0e-30; VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000] [L231] float x = __VERIFIER_nondet_float(); [L232] float y = -1.0f / 0.0f; [L233] CALL, EXPR __ieee754_hypotf(x, y) [L84] float a = x, b = y, t1, t2, y1, y2, w; [L85] __int32_t j, k, ha, hb; VAL [\old(x)=4294967296, \old(y)=4294967300, a=4294967296, b=4294967300, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=4294967296, y=4294967300] [L88] ieee_float_shape_type gf_u; [L89] gf_u.value = (x) [L90] EXPR gf_u.word [L90] (ha) = gf_u.word [L92] ha &= 0x7fffffffL VAL [\old(x)=4294967296, \old(y)=4294967300, a=4294967296, b=4294967300, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=4294967296, y=4294967300] [L94] ieee_float_shape_type gf_u; [L95] gf_u.value = (y) [L96] EXPR gf_u.word [L96] (hb) = gf_u.word [L98] hb &= 0x7fffffffL VAL [\old(x)=4294967296, \old(y)=4294967300, a=4294967296, b=4294967300, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=4294967296, y=4294967300] [L99] COND FALSE !(hb > ha) [L106] a = x [L107] b = y VAL [\old(x)=4294967296, \old(y)=4294967300, a=4294967296, b=4294967300, ha=-2, hb=-251658243, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=4294967296, y=4294967300] [L110] ieee_float_shape_type sf_u; [L111] sf_u.word = (ha) [L112] EXPR sf_u.value [L112] (a) = sf_u.value [L115] ieee_float_shape_type sf_u; [L116] sf_u.word = (hb) [L117] EXPR sf_u.value [L117] (b) = sf_u.value [L119] COND TRUE (ha - hb) > 0xf000000L [L120] return a + b; VAL [\old(x)=4294967296, \old(y)=4294967300, a=4294967298, b=4294967299, ha=-2, hb=-251658243, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=4294967296, y=4294967300] [L233] RET, EXPR __ieee754_hypotf(x, y) [L233] float res = __ieee754_hypotf(x, y); [L235] CALL, EXPR isinf_float(res) [L214] __int32_t ix; VAL [\old(x)=4294967297, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=4294967297] [L216] ieee_float_shape_type gf_u; [L217] gf_u.value = (x) [L218] EXPR gf_u.word [L218] (ix) = gf_u.word [L220] ix &= 0x7fffffff [L221] return ((ix) == 0x7f800000L); VAL [\old(x)=4294967297, \result=0, ix=0, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=4294967297] [L235] RET, EXPR isinf_float(res) [L235] COND TRUE !isinf_float(res) [L236] reach_error() VAL [one_sqrt=1, res=4294967297, tiny_sqrt=1/1000000000000000000000000000000, x=4294967296, y=4294967300] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 89 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.4s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 111 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 0 IncrementalHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 111 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=89occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 37 NumberOfCodeBlocks, 37 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 15 ConstructedInterpolants, 0 QuantifiedInterpolants, 15 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-12-14 13:34:41,886 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/float-newlib/float_req_bl_1270d.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 38626a16356f67aaf09cedb2585feb986fe72ed23b75358e37f00f94c56ef8f0 --- Real Ultimate output --- This is Ultimate 0.2.2-839c364b5d67a0f615c82cb70ab247790648d4a9-839c364 [2021-12-14 13:34:43,574 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-14 13:34:43,578 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-14 13:34:43,609 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-14 13:34:43,609 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-14 13:34:43,614 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-14 13:34:43,616 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-14 13:34:43,620 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-14 13:34:43,622 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-14 13:34:43,626 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-14 13:34:43,627 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-14 13:34:43,628 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-14 13:34:43,628 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-14 13:34:43,630 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-14 13:34:43,632 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-14 13:34:43,636 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-14 13:34:43,637 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-14 13:34:43,639 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-14 13:34:43,643 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-14 13:34:43,645 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-14 13:34:43,648 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-14 13:34:43,648 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-14 13:34:43,649 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-14 13:34:43,650 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-14 13:34:43,652 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-14 13:34:43,653 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-14 13:34:43,653 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-14 13:34:43,654 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-14 13:34:43,655 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-14 13:34:43,663 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-14 13:34:43,663 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-14 13:34:43,664 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-14 13:34:43,665 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-14 13:34:43,665 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-14 13:34:43,666 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-14 13:34:43,666 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-14 13:34:43,667 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-14 13:34:43,667 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-14 13:34:43,667 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-14 13:34:43,668 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-14 13:34:43,669 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-14 13:34:43,669 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-12-14 13:34:43,693 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-14 13:34:43,695 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-14 13:34:43,696 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-14 13:34:43,696 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-14 13:34:43,696 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-14 13:34:43,697 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-14 13:34:43,697 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-14 13:34:43,698 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-14 13:34:43,698 INFO L138 SettingsManager]: * Use SBE=true [2021-12-14 13:34:43,698 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-14 13:34:43,699 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-14 13:34:43,699 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-14 13:34:43,699 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-14 13:34:43,699 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-14 13:34:43,699 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-14 13:34:43,699 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-14 13:34:43,699 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-14 13:34:43,700 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-14 13:34:43,700 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-14 13:34:43,700 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-14 13:34:43,700 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-14 13:34:43,700 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-14 13:34:43,700 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-14 13:34:43,700 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-14 13:34:43,701 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-14 13:34:43,701 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-14 13:34:43,701 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 13:34:43,701 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-14 13:34:43,701 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-14 13:34:43,701 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-14 13:34:43,701 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-14 13:34:43,702 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-14 13:34:43,702 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-14 13:34:43,702 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-14 13:34:43,702 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-14 13:34:43,702 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-14 13:34:43,702 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-14 13:34:43,703 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 38626a16356f67aaf09cedb2585feb986fe72ed23b75358e37f00f94c56ef8f0 [2021-12-14 13:34:43,952 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-14 13:34:43,968 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-14 13:34:43,971 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-14 13:34:43,972 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-14 13:34:43,972 INFO L275 PluginConnector]: CDTParser initialized [2021-12-14 13:34:43,974 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/float_req_bl_1270d.c [2021-12-14 13:34:44,016 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5ae7c45bf/1c46dcc0d02246d4bd39c5a5cb6372c4/FLAG10e419f4b [2021-12-14 13:34:44,403 INFO L306 CDTParser]: Found 1 translation units. [2021-12-14 13:34:44,403 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/float_req_bl_1270d.c [2021-12-14 13:34:44,413 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5ae7c45bf/1c46dcc0d02246d4bd39c5a5cb6372c4/FLAG10e419f4b [2021-12-14 13:34:44,423 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5ae7c45bf/1c46dcc0d02246d4bd39c5a5cb6372c4 [2021-12-14 13:34:44,426 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-14 13:34:44,427 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-14 13:34:44,428 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-14 13:34:44,429 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-14 13:34:44,431 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-14 13:34:44,431 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 01:34:44" (1/1) ... [2021-12-14 13:34:44,433 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78f573c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:34:44, skipping insertion in model container [2021-12-14 13:34:44,433 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 01:34:44" (1/1) ... [2021-12-14 13:34:44,437 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-14 13:34:44,464 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-14 13:34:44,609 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_1270d.c[4704,4717] [2021-12-14 13:34:44,612 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 13:34:44,649 INFO L203 MainTranslator]: Completed pre-run [2021-12-14 13:34:44,687 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_1270d.c[4704,4717] [2021-12-14 13:34:44,693 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 13:34:44,704 INFO L208 MainTranslator]: Completed translation [2021-12-14 13:34:44,704 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:34:44 WrapperNode [2021-12-14 13:34:44,705 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-14 13:34:44,705 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-14 13:34:44,706 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-14 13:34:44,706 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-14 13:34:44,710 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:34:44" (1/1) ... [2021-12-14 13:34:44,730 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:34:44" (1/1) ... [2021-12-14 13:34:44,766 INFO L137 Inliner]: procedures = 21, calls = 75, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 254 [2021-12-14 13:34:44,766 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-14 13:34:44,767 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-14 13:34:44,767 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-14 13:34:44,767 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-14 13:34:44,777 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:34:44" (1/1) ... [2021-12-14 13:34:44,778 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:34:44" (1/1) ... [2021-12-14 13:34:44,790 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:34:44" (1/1) ... [2021-12-14 13:34:44,796 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:34:44" (1/1) ... [2021-12-14 13:34:44,805 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:34:44" (1/1) ... [2021-12-14 13:34:44,820 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:34:44" (1/1) ... [2021-12-14 13:34:44,822 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:34:44" (1/1) ... [2021-12-14 13:34:44,825 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-14 13:34:44,826 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-14 13:34:44,826 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-14 13:34:44,827 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-14 13:34:44,827 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:34:44" (1/1) ... [2021-12-14 13:34:44,832 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 13:34:44,839 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 13:34:44,848 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) [2021-12-14 13:34:44,855 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 [2021-12-14 13:34:44,875 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-14 13:34:44,875 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-14 13:34:44,876 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-14 13:34:44,876 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2021-12-14 13:34:44,876 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-12-14 13:34:44,876 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-14 13:34:44,876 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-14 13:34:44,876 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2021-12-14 13:34:44,876 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-12-14 13:34:44,876 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-14 13:34:44,877 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_sqrtf [2021-12-14 13:34:44,877 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_sqrtf [2021-12-14 13:34:44,945 INFO L236 CfgBuilder]: Building ICFG [2021-12-14 13:34:44,947 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-14 13:34:47,967 INFO L277 CfgBuilder]: Performing block encoding [2021-12-14 13:34:47,971 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-14 13:34:47,972 INFO L301 CfgBuilder]: Removed 34 assume(true) statements. [2021-12-14 13:34:47,973 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 01:34:47 BoogieIcfgContainer [2021-12-14 13:34:47,973 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-14 13:34:47,974 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-14 13:34:47,974 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-14 13:34:47,976 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-14 13:34:47,976 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 01:34:44" (1/3) ... [2021-12-14 13:34:47,977 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@565fa9fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 01:34:47, skipping insertion in model container [2021-12-14 13:34:47,977 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 01:34:44" (2/3) ... [2021-12-14 13:34:47,977 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@565fa9fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 01:34:47, skipping insertion in model container [2021-12-14 13:34:47,977 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 01:34:47" (3/3) ... [2021-12-14 13:34:47,978 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1270d.c [2021-12-14 13:34:47,981 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-14 13:34:47,982 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-14 13:34:48,026 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-14 13:34:48,041 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 [2021-12-14 13:34:48,042 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-14 13:34:48,058 INFO L276 IsEmpty]: Start isEmpty. Operand has 89 states, 84 states have (on average 1.6904761904761905) internal successors, (142), 85 states have internal predecessors, (142), 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) [2021-12-14 13:34:48,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-12-14 13:34:48,062 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 13:34:48,063 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 13:34:48,063 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 13:34:48,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 13:34:48,068 INFO L85 PathProgramCache]: Analyzing trace with hash -1724151004, now seen corresponding path program 1 times [2021-12-14 13:34:48,076 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-14 13:34:48,077 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [343059741] [2021-12-14 13:34:48,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 13:34:48,078 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-14 13:34:48,078 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-14 13:34:48,080 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) [2021-12-14 13:34:48,099 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-12-14 13:34:48,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 13:34:48,287 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 1 conjunts are in the unsatisfiable core [2021-12-14 13:34:48,290 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 13:34:48,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 13:34:48,362 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 13:34:48,363 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-14 13:34:48,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [343059741] [2021-12-14 13:34:48,364 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [343059741] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 13:34:48,364 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 13:34:48,365 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-14 13:34:48,366 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246742307] [2021-12-14 13:34:48,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 13:34:48,370 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-14 13:34:48,371 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-14 13:34:48,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-14 13:34:48,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-14 13:34:48,400 INFO L87 Difference]: Start difference. First operand has 89 states, 84 states have (on average 1.6904761904761905) internal successors, (142), 85 states have internal predecessors, (142), 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 8.0) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 13:34:48,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 13:34:48,438 INFO L93 Difference]: Finished difference Result 176 states and 292 transitions. [2021-12-14 13:34:48,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-14 13:34:48,440 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-12-14 13:34:48,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 13:34:48,449 INFO L225 Difference]: With dead ends: 176 [2021-12-14 13:34:48,449 INFO L226 Difference]: Without dead ends: 86 [2021-12-14 13:34:48,452 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-14 13:34:48,457 INFO L933 BasicCegarLoop]: 111 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, 111 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 [2021-12-14 13:34:48,458 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 13:34:48,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2021-12-14 13:34:48,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2021-12-14 13:34:48,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 82 states have (on average 1.2682926829268293) internal successors, (104), 82 states have internal predecessors, (104), 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) [2021-12-14 13:34:48,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 108 transitions. [2021-12-14 13:34:48,506 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 108 transitions. Word has length 16 [2021-12-14 13:34:48,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 13:34:48,507 INFO L470 AbstractCegarLoop]: Abstraction has 86 states and 108 transitions. [2021-12-14 13:34:48,508 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 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) [2021-12-14 13:34:48,508 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 108 transitions. [2021-12-14 13:34:48,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-12-14 13:34:48,509 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 13:34:48,510 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 13:34:48,522 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-12-14 13:34:48,719 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-14 13:34:48,720 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 13:34:48,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 13:34:48,721 INFO L85 PathProgramCache]: Analyzing trace with hash -927967701, now seen corresponding path program 1 times [2021-12-14 13:34:48,721 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-14 13:34:48,721 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [289225037] [2021-12-14 13:34:48,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 13:34:48,722 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-14 13:34:48,722 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-14 13:34:48,723 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) [2021-12-14 13:34:48,754 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-12-14 13:34:48,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 13:34:48,876 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 12 conjunts are in the unsatisfiable core [2021-12-14 13:34:48,878 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 13:34:49,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 13:34:49,506 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 13:34:49,506 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-14 13:34:49,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [289225037] [2021-12-14 13:34:49,507 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [289225037] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 13:34:49,507 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 13:34:49,507 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 13:34:49,507 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53753713] [2021-12-14 13:34:49,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 13:34:49,508 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 13:34:49,508 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-14 13:34:49,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 13:34:49,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-14 13:34:49,509 INFO L87 Difference]: Start difference. First operand 86 states and 108 transitions. Second operand has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 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) [2021-12-14 13:34:49,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 13:34:49,536 INFO L93 Difference]: Finished difference Result 99 states and 121 transitions. [2021-12-14 13:34:49,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-14 13:34:49,537 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-12-14 13:34:49,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 13:34:49,538 INFO L225 Difference]: With dead ends: 99 [2021-12-14 13:34:49,539 INFO L226 Difference]: Without dead ends: 91 [2021-12-14 13:34:49,541 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-14 13:34:49,542 INFO L933 BasicCegarLoop]: 101 mSDtfsCounter, 3 mSDsluCounter, 398 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 499 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 71 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 13:34:49,543 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 499 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 71 Unchecked, 0.0s Time] [2021-12-14 13:34:49,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2021-12-14 13:34:49,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2021-12-14 13:34:49,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 87 states have (on average 1.2528735632183907) internal successors, (109), 87 states have internal predecessors, (109), 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) [2021-12-14 13:34:49,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 113 transitions. [2021-12-14 13:34:49,550 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 113 transitions. Word has length 21 [2021-12-14 13:34:49,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 13:34:49,550 INFO L470 AbstractCegarLoop]: Abstraction has 91 states and 113 transitions. [2021-12-14 13:34:49,551 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 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) [2021-12-14 13:34:49,551 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 113 transitions. [2021-12-14 13:34:49,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-12-14 13:34:49,552 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 13:34:49,552 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 13:34:49,566 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-12-14 13:34:49,756 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-14 13:34:49,757 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 13:34:49,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 13:34:49,757 INFO L85 PathProgramCache]: Analyzing trace with hash -341161687, now seen corresponding path program 1 times [2021-12-14 13:34:49,758 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-14 13:34:49,758 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [415803775] [2021-12-14 13:34:49,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 13:34:49,758 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-14 13:34:49,758 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-14 13:34:49,759 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) [2021-12-14 13:34:49,760 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-12-14 13:34:49,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 13:34:49,904 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 36 conjunts are in the unsatisfiable core [2021-12-14 13:34:49,908 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 13:34:50,047 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-14 13:34:50,351 INFO L354 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2021-12-14 13:34:50,352 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 39 [2021-12-14 13:34:50,589 INFO L354 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2021-12-14 13:34:50,589 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 31 [2021-12-14 13:34:52,072 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 36 [2021-12-14 13:34:54,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 13:34:54,519 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 13:34:54,519 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-14 13:34:54,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [415803775] [2021-12-14 13:34:54,519 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [415803775] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 13:34:54,519 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 13:34:54,519 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-12-14 13:34:54,520 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463665212] [2021-12-14 13:34:54,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 13:34:54,520 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-12-14 13:34:54,520 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-14 13:34:54,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-12-14 13:34:54,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2021-12-14 13:34:54,521 INFO L87 Difference]: Start difference. First operand 91 states and 113 transitions. Second operand has 15 states, 15 states have (on average 1.4) internal successors, (21), 14 states have internal predecessors, (21), 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) [2021-12-14 13:34:57,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 13:34:57,233 INFO L93 Difference]: Finished difference Result 99 states and 120 transitions. [2021-12-14 13:34:57,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-14 13:34:57,238 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.4) internal successors, (21), 14 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-12-14 13:34:57,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 13:34:57,239 INFO L225 Difference]: With dead ends: 99 [2021-12-14 13:34:57,239 INFO L226 Difference]: Without dead ends: 91 [2021-12-14 13:34:57,240 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2021-12-14 13:34:57,242 INFO L933 BasicCegarLoop]: 100 mSDtfsCounter, 5 mSDsluCounter, 648 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 748 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 62 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2021-12-14 13:34:57,242 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 748 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 62 Unchecked, 2.7s Time] [2021-12-14 13:34:57,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2021-12-14 13:34:57,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 86. [2021-12-14 13:34:57,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 82 states have (on average 1.2560975609756098) internal successors, (103), 82 states have internal predecessors, (103), 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) [2021-12-14 13:34:57,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 107 transitions. [2021-12-14 13:34:57,247 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 107 transitions. Word has length 21 [2021-12-14 13:34:57,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 13:34:57,248 INFO L470 AbstractCegarLoop]: Abstraction has 86 states and 107 transitions. [2021-12-14 13:34:57,248 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.4) internal successors, (21), 14 states have internal predecessors, (21), 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) [2021-12-14 13:34:57,248 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 107 transitions. [2021-12-14 13:34:57,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-12-14 13:34:57,248 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 13:34:57,248 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 13:34:57,259 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-12-14 13:34:57,449 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-14 13:34:57,449 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 13:34:57,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 13:34:57,450 INFO L85 PathProgramCache]: Analyzing trace with hash -637128605, now seen corresponding path program 1 times [2021-12-14 13:34:57,450 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-14 13:34:57,450 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2022913226] [2021-12-14 13:34:57,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 13:34:57,451 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-14 13:34:57,451 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-14 13:34:57,452 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) [2021-12-14 13:34:57,454 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-12-14 13:34:57,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 13:34:57,557 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 12 conjunts are in the unsatisfiable core [2021-12-14 13:34:57,559 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 13:34:58,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 13:34:58,043 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 13:34:58,043 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-14 13:34:58,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2022913226] [2021-12-14 13:34:58,044 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2022913226] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 13:34:58,044 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 13:34:58,044 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 13:34:58,044 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473992292] [2021-12-14 13:34:58,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 13:34:58,044 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 13:34:58,044 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-14 13:34:58,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 13:34:58,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-14 13:34:58,045 INFO L87 Difference]: Start difference. First operand 86 states and 107 transitions. Second operand has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 13:34:58,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 13:34:58,057 INFO L93 Difference]: Finished difference Result 155 states and 193 transitions. [2021-12-14 13:34:58,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-14 13:34:58,057 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-12-14 13:34:58,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 13:34:58,058 INFO L225 Difference]: With dead ends: 155 [2021-12-14 13:34:58,058 INFO L226 Difference]: Without dead ends: 92 [2021-12-14 13:34:58,059 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-14 13:34:58,059 INFO L933 BasicCegarLoop]: 100 mSDtfsCounter, 1 mSDsluCounter, 421 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 521 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 82 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 13:34:58,060 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 521 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 82 Unchecked, 0.0s Time] [2021-12-14 13:34:58,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2021-12-14 13:34:58,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2021-12-14 13:34:58,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 88 states have (on average 1.2386363636363635) internal successors, (109), 88 states have internal predecessors, (109), 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) [2021-12-14 13:34:58,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 113 transitions. [2021-12-14 13:34:58,069 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 113 transitions. Word has length 24 [2021-12-14 13:34:58,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 13:34:58,070 INFO L470 AbstractCegarLoop]: Abstraction has 92 states and 113 transitions. [2021-12-14 13:34:58,070 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 13:34:58,075 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 113 transitions. [2021-12-14 13:34:58,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-12-14 13:34:58,077 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 13:34:58,077 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 13:34:58,088 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-12-14 13:34:58,291 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-14 13:34:58,291 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 13:34:58,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 13:34:58,292 INFO L85 PathProgramCache]: Analyzing trace with hash 383939749, now seen corresponding path program 1 times [2021-12-14 13:34:58,292 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-14 13:34:58,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1116595776] [2021-12-14 13:34:58,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 13:34:58,293 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-14 13:34:58,293 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-14 13:34:58,294 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) [2021-12-14 13:34:58,294 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-12-14 13:34:58,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 13:34:58,403 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 11 conjunts are in the unsatisfiable core [2021-12-14 13:34:58,405 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 13:34:58,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 13:34:58,736 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 13:34:58,736 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-14 13:34:58,736 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1116595776] [2021-12-14 13:34:58,736 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1116595776] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 13:34:58,737 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 13:34:58,737 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-14 13:34:58,737 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71441293] [2021-12-14 13:34:58,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 13:34:58,737 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-14 13:34:58,737 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-14 13:34:58,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-14 13:34:58,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-14 13:34:58,738 INFO L87 Difference]: Start difference. First operand 92 states and 113 transitions. Second operand has 6 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 13:34:58,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 13:34:58,741 INFO L93 Difference]: Finished difference Result 155 states and 192 transitions. [2021-12-14 13:34:58,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-14 13:34:58,741 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-12-14 13:34:58,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 13:34:58,742 INFO L225 Difference]: With dead ends: 155 [2021-12-14 13:34:58,742 INFO L226 Difference]: Without dead ends: 92 [2021-12-14 13:34:58,743 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-14 13:34:58,743 INFO L933 BasicCegarLoop]: 105 mSDtfsCounter, 0 mSDsluCounter, 365 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 470 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 54 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 13:34:58,743 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 470 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 54 Unchecked, 0.0s Time] [2021-12-14 13:34:58,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2021-12-14 13:34:58,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 86. [2021-12-14 13:34:58,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 82 states have (on average 1.2439024390243902) internal successors, (102), 82 states have internal predecessors, (102), 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) [2021-12-14 13:34:58,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 106 transitions. [2021-12-14 13:34:58,748 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 106 transitions. Word has length 24 [2021-12-14 13:34:58,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 13:34:58,748 INFO L470 AbstractCegarLoop]: Abstraction has 86 states and 106 transitions. [2021-12-14 13:34:58,748 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 13:34:58,748 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 106 transitions. [2021-12-14 13:34:58,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-12-14 13:34:58,749 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 13:34:58,749 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 13:34:58,760 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-12-14 13:34:58,957 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-14 13:34:58,960 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 13:34:58,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 13:34:58,961 INFO L85 PathProgramCache]: Analyzing trace with hash 753179498, now seen corresponding path program 1 times [2021-12-14 13:34:58,961 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-14 13:34:58,961 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [70240901] [2021-12-14 13:34:58,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 13:34:58,962 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-14 13:34:58,962 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-14 13:34:58,962 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) [2021-12-14 13:34:58,966 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-12-14 13:34:59,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 13:34:59,083 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 27 conjunts are in the unsatisfiable core [2021-12-14 13:34:59,086 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 13:34:59,293 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-14 13:35:00,035 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 21 [2021-12-14 13:35:00,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 13:35:00,395 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 13:35:00,395 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-14 13:35:00,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [70240901] [2021-12-14 13:35:00,396 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [70240901] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 13:35:00,396 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 13:35:00,396 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-14 13:35:00,396 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782521656] [2021-12-14 13:35:00,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 13:35:00,396 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-14 13:35:00,396 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-14 13:35:00,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-14 13:35:00,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2021-12-14 13:35:00,397 INFO L87 Difference]: Start difference. First operand 86 states and 106 transitions. Second operand has 12 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 12 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 13:35:00,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 13:35:00,410 INFO L93 Difference]: Finished difference Result 108 states and 130 transitions. [2021-12-14 13:35:00,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-14 13:35:00,411 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 12 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-12-14 13:35:00,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 13:35:00,412 INFO L225 Difference]: With dead ends: 108 [2021-12-14 13:35:00,412 INFO L226 Difference]: Without dead ends: 99 [2021-12-14 13:35:00,412 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2021-12-14 13:35:00,412 INFO L933 BasicCegarLoop]: 95 mSDtfsCounter, 5 mSDsluCounter, 840 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 935 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 121 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 13:35:00,413 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 935 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 121 Unchecked, 0.0s Time] [2021-12-14 13:35:00,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2021-12-14 13:35:00,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 95. [2021-12-14 13:35:00,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 91 states have (on average 1.2417582417582418) internal successors, (113), 91 states have internal predecessors, (113), 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) [2021-12-14 13:35:00,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 117 transitions. [2021-12-14 13:35:00,417 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 117 transitions. Word has length 26 [2021-12-14 13:35:00,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 13:35:00,418 INFO L470 AbstractCegarLoop]: Abstraction has 95 states and 117 transitions. [2021-12-14 13:35:00,418 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 12 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 13:35:00,418 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 117 transitions. [2021-12-14 13:35:00,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-12-14 13:35:00,419 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 13:35:00,419 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 13:35:00,430 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-12-14 13:35:00,628 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-14 13:35:00,628 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 13:35:00,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 13:35:00,629 INFO L85 PathProgramCache]: Analyzing trace with hash 1433237868, now seen corresponding path program 1 times [2021-12-14 13:35:00,629 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-14 13:35:00,629 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1580250447] [2021-12-14 13:35:00,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 13:35:00,629 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-14 13:35:00,629 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-14 13:35:00,630 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) [2021-12-14 13:35:00,631 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-12-14 13:35:00,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 13:35:00,748 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-14 13:35:00,749 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 13:35:01,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 13:35:01,066 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 13:35:01,067 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-14 13:35:01,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1580250447] [2021-12-14 13:35:01,067 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1580250447] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 13:35:01,067 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 13:35:01,067 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-14 13:35:01,067 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86254075] [2021-12-14 13:35:01,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 13:35:01,067 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-14 13:35:01,067 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-14 13:35:01,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-14 13:35:01,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-14 13:35:01,068 INFO L87 Difference]: Start difference. First operand 95 states and 117 transitions. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 13:35:01,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 13:35:01,073 INFO L93 Difference]: Finished difference Result 104 states and 125 transitions. [2021-12-14 13:35:01,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-14 13:35:01,073 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-12-14 13:35:01,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 13:35:01,074 INFO L225 Difference]: With dead ends: 104 [2021-12-14 13:35:01,074 INFO L226 Difference]: Without dead ends: 93 [2021-12-14 13:35:01,074 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-14 13:35:01,074 INFO L933 BasicCegarLoop]: 99 mSDtfsCounter, 1 mSDsluCounter, 268 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 367 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 31 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 13:35:01,075 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 367 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 31 Unchecked, 0.0s Time] [2021-12-14 13:35:01,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2021-12-14 13:35:01,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2021-12-14 13:35:01,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 89 states have (on average 1.2247191011235956) internal successors, (109), 89 states have internal predecessors, (109), 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) [2021-12-14 13:35:01,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 113 transitions. [2021-12-14 13:35:01,078 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 113 transitions. Word has length 26 [2021-12-14 13:35:01,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 13:35:01,079 INFO L470 AbstractCegarLoop]: Abstraction has 93 states and 113 transitions. [2021-12-14 13:35:01,079 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 13:35:01,079 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 113 transitions. [2021-12-14 13:35:01,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-12-14 13:35:01,079 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 13:35:01,080 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 13:35:01,089 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2021-12-14 13:35:01,289 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-14 13:35:01,289 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 13:35:01,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 13:35:01,290 INFO L85 PathProgramCache]: Analyzing trace with hash -1547643092, now seen corresponding path program 1 times [2021-12-14 13:35:01,290 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-14 13:35:01,291 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [315503161] [2021-12-14 13:35:01,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 13:35:01,291 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-14 13:35:01,291 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-14 13:35:01,292 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) [2021-12-14 13:35:01,292 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-12-14 13:35:01,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 13:35:01,406 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 14 conjunts are in the unsatisfiable core [2021-12-14 13:35:01,407 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 13:35:01,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 13:35:01,983 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 13:35:01,983 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-14 13:35:01,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [315503161] [2021-12-14 13:35:01,983 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [315503161] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 13:35:01,983 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 13:35:01,983 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 13:35:01,983 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926084124] [2021-12-14 13:35:01,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 13:35:01,984 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 13:35:01,984 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-14 13:35:01,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 13:35:01,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-14 13:35:01,984 INFO L87 Difference]: Start difference. First operand 93 states and 113 transitions. Second operand has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 13:35:01,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 13:35:01,990 INFO L93 Difference]: Finished difference Result 102 states and 121 transitions. [2021-12-14 13:35:01,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-14 13:35:01,991 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-12-14 13:35:01,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 13:35:01,991 INFO L225 Difference]: With dead ends: 102 [2021-12-14 13:35:01,992 INFO L226 Difference]: Without dead ends: 93 [2021-12-14 13:35:01,992 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-14 13:35:01,992 INFO L933 BasicCegarLoop]: 104 mSDtfsCounter, 2 mSDsluCounter, 412 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 516 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 85 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 13:35:01,993 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 516 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 85 Unchecked, 0.0s Time] [2021-12-14 13:35:01,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2021-12-14 13:35:01,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2021-12-14 13:35:01,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 89 states have (on average 1.2134831460674158) internal successors, (108), 89 states have internal predecessors, (108), 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) [2021-12-14 13:35:01,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 112 transitions. [2021-12-14 13:35:01,996 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 112 transitions. Word has length 26 [2021-12-14 13:35:01,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 13:35:01,997 INFO L470 AbstractCegarLoop]: Abstraction has 93 states and 112 transitions. [2021-12-14 13:35:01,997 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 13:35:01,997 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 112 transitions. [2021-12-14 13:35:01,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-12-14 13:35:01,997 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 13:35:01,997 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 13:35:02,007 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-12-14 13:35:02,203 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-14 13:35:02,203 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 13:35:02,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 13:35:02,204 INFO L85 PathProgramCache]: Analyzing trace with hash -867584722, now seen corresponding path program 1 times [2021-12-14 13:35:02,204 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-14 13:35:02,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [162873137] [2021-12-14 13:35:02,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 13:35:02,204 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-14 13:35:02,204 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-14 13:35:02,205 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) [2021-12-14 13:35:02,206 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-12-14 13:35:02,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 13:35:02,320 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 28 conjunts are in the unsatisfiable core [2021-12-14 13:35:02,322 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 13:35:02,385 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-14 13:35:02,576 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 31 [2021-12-14 13:35:03,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 13:35:03,504 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 13:35:03,504 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-14 13:35:03,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [162873137] [2021-12-14 13:35:03,504 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [162873137] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 13:35:03,504 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 13:35:03,504 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-12-14 13:35:03,504 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042539233] [2021-12-14 13:35:03,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 13:35:03,505 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-14 13:35:03,505 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-14 13:35:03,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-14 13:35:03,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2021-12-14 13:35:03,505 INFO L87 Difference]: Start difference. First operand 93 states and 112 transitions. Second operand has 13 states, 13 states have (on average 2.0) internal successors, (26), 13 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 13:35:03,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 13:35:03,515 INFO L93 Difference]: Finished difference Result 112 states and 129 transitions. [2021-12-14 13:35:03,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-14 13:35:03,516 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.0) internal successors, (26), 13 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-12-14 13:35:03,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 13:35:03,516 INFO L225 Difference]: With dead ends: 112 [2021-12-14 13:35:03,517 INFO L226 Difference]: Without dead ends: 102 [2021-12-14 13:35:03,517 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2021-12-14 13:35:03,517 INFO L933 BasicCegarLoop]: 108 mSDtfsCounter, 11 mSDsluCounter, 1044 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 1152 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 138 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 13:35:03,518 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 1152 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 138 Unchecked, 0.0s Time] [2021-12-14 13:35:03,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2021-12-14 13:35:03,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 93. [2021-12-14 13:35:03,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 89 states have (on average 1.202247191011236) internal successors, (107), 89 states have internal predecessors, (107), 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) [2021-12-14 13:35:03,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 111 transitions. [2021-12-14 13:35:03,521 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 111 transitions. Word has length 26 [2021-12-14 13:35:03,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 13:35:03,521 INFO L470 AbstractCegarLoop]: Abstraction has 93 states and 111 transitions. [2021-12-14 13:35:03,521 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.0) internal successors, (26), 13 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 13:35:03,521 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 111 transitions. [2021-12-14 13:35:03,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-12-14 13:35:03,522 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 13:35:03,522 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 13:35:03,532 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-12-14 13:35:03,732 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-14 13:35:03,732 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 13:35:03,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 13:35:03,732 INFO L85 PathProgramCache]: Analyzing trace with hash -1260611732, now seen corresponding path program 1 times [2021-12-14 13:35:03,733 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-14 13:35:03,733 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1691183858] [2021-12-14 13:35:03,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 13:35:03,733 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-14 13:35:03,733 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-14 13:35:03,734 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) [2021-12-14 13:35:03,737 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-12-14 13:35:03,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 13:35:03,870 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 11 conjunts are in the unsatisfiable core [2021-12-14 13:35:03,871 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 13:35:04,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 13:35:04,257 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 13:35:04,257 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-14 13:35:04,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1691183858] [2021-12-14 13:35:04,257 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1691183858] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 13:35:04,257 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 13:35:04,257 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-14 13:35:04,258 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230531867] [2021-12-14 13:35:04,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 13:35:04,258 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-14 13:35:04,258 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-14 13:35:04,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-14 13:35:04,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-14 13:35:04,258 INFO L87 Difference]: Start difference. First operand 93 states and 111 transitions. Second operand has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 13:35:04,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 13:35:04,261 INFO L93 Difference]: Finished difference Result 101 states and 118 transitions. [2021-12-14 13:35:04,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-14 13:35:04,261 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-12-14 13:35:04,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 13:35:04,261 INFO L225 Difference]: With dead ends: 101 [2021-12-14 13:35:04,261 INFO L226 Difference]: Without dead ends: 90 [2021-12-14 13:35:04,262 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-14 13:35:04,262 INFO L933 BasicCegarLoop]: 99 mSDtfsCounter, 0 mSDsluCounter, 348 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 447 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 49 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 13:35:04,262 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 447 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 49 Unchecked, 0.0s Time] [2021-12-14 13:35:04,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2021-12-14 13:35:04,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 83. [2021-12-14 13:35:04,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 79 states have (on average 1.2151898734177216) internal successors, (96), 79 states have internal predecessors, (96), 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) [2021-12-14 13:35:04,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 100 transitions. [2021-12-14 13:35:04,270 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 100 transitions. Word has length 26 [2021-12-14 13:35:04,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 13:35:04,274 INFO L470 AbstractCegarLoop]: Abstraction has 83 states and 100 transitions. [2021-12-14 13:35:04,274 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 13:35:04,275 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 100 transitions. [2021-12-14 13:35:04,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-12-14 13:35:04,276 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 13:35:04,276 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 13:35:04,293 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-12-14 13:35:04,487 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-14 13:35:04,487 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 13:35:04,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 13:35:04,488 INFO L85 PathProgramCache]: Analyzing trace with hash 1214285036, now seen corresponding path program 1 times [2021-12-14 13:35:04,488 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-14 13:35:04,488 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [67378302] [2021-12-14 13:35:04,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 13:35:04,488 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-14 13:35:04,489 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-14 13:35:04,489 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-14 13:35:04,490 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-12-14 13:35:04,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 13:35:04,606 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 12 conjunts are in the unsatisfiable core [2021-12-14 13:35:04,608 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 13:35:05,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 13:35:05,096 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 13:35:05,096 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-14 13:35:05,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [67378302] [2021-12-14 13:35:05,096 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [67378302] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 13:35:05,096 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 13:35:05,096 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 13:35:05,096 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343421346] [2021-12-14 13:35:05,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 13:35:05,097 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 13:35:05,097 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-14 13:35:05,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 13:35:05,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-14 13:35:05,097 INFO L87 Difference]: Start difference. First operand 83 states and 100 transitions. Second operand has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 7 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 13:35:05,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 13:35:05,100 INFO L93 Difference]: Finished difference Result 157 states and 190 transitions. [2021-12-14 13:35:05,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-14 13:35:05,101 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 7 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-12-14 13:35:05,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 13:35:05,101 INFO L225 Difference]: With dead ends: 157 [2021-12-14 13:35:05,101 INFO L226 Difference]: Without dead ends: 83 [2021-12-14 13:35:05,102 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-14 13:35:05,102 INFO L933 BasicCegarLoop]: 93 mSDtfsCounter, 1 mSDsluCounter, 323 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 416 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 54 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 13:35:05,103 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 416 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 54 Unchecked, 0.0s Time] [2021-12-14 13:35:05,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2021-12-14 13:35:05,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2021-12-14 13:35:05,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 79 states have (on average 1.2025316455696202) internal successors, (95), 79 states have internal predecessors, (95), 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) [2021-12-14 13:35:05,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 99 transitions. [2021-12-14 13:35:05,105 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 99 transitions. Word has length 29 [2021-12-14 13:35:05,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 13:35:05,105 INFO L470 AbstractCegarLoop]: Abstraction has 83 states and 99 transitions. [2021-12-14 13:35:05,105 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 7 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 13:35:05,106 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 99 transitions. [2021-12-14 13:35:05,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-12-14 13:35:05,106 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 13:35:05,106 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 13:35:05,130 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-12-14 13:35:05,316 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-14 13:35:05,316 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 13:35:05,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 13:35:05,316 INFO L85 PathProgramCache]: Analyzing trace with hash 791583210, now seen corresponding path program 1 times [2021-12-14 13:35:05,317 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-14 13:35:05,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1915946517] [2021-12-14 13:35:05,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 13:35:05,317 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-14 13:35:05,317 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-14 13:35:05,318 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-14 13:35:05,318 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-12-14 13:35:05,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 13:35:05,433 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 11 conjunts are in the unsatisfiable core [2021-12-14 13:35:05,435 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 13:35:05,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 13:35:05,768 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 13:35:05,768 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-14 13:35:05,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1915946517] [2021-12-14 13:35:05,768 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1915946517] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 13:35:05,768 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 13:35:05,769 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-14 13:35:05,769 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625963753] [2021-12-14 13:35:05,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 13:35:05,769 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-14 13:35:05,769 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-14 13:35:05,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-14 13:35:05,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-14 13:35:05,770 INFO L87 Difference]: Start difference. First operand 83 states and 99 transitions. Second operand has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 13:35:05,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 13:35:05,771 INFO L93 Difference]: Finished difference Result 83 states and 99 transitions. [2021-12-14 13:35:05,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-14 13:35:05,771 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-12-14 13:35:05,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 13:35:05,771 INFO L225 Difference]: With dead ends: 83 [2021-12-14 13:35:05,771 INFO L226 Difference]: Without dead ends: 0 [2021-12-14 13:35:05,772 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-14 13:35:05,772 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 0 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 13 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 13:35:05,772 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 30 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 13 Unchecked, 0.0s Time] [2021-12-14 13:35:05,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-12-14 13:35:05,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-12-14 13:35:05,773 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) [2021-12-14 13:35:05,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-12-14 13:35:05,773 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 29 [2021-12-14 13:35:05,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 13:35:05,774 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-14 13:35:05,774 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 13:35:05,774 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-12-14 13:35:05,774 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-12-14 13:35:05,776 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-14 13:35:05,787 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Ended with exit code 0 [2021-12-14 13:35:05,985 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-14 13:35:05,987 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-12-14 13:35:06,393 INFO L854 garLoopResultBuilder]: At program point L184(line 184) the Hoare annotation is: false [2021-12-14 13:35:06,393 INFO L858 garLoopResultBuilder]: For program point L184-1(line 184) no Hoare annotation was computed. [2021-12-14 13:35:06,393 INFO L858 garLoopResultBuilder]: For program point L151-1(lines 151 155) no Hoare annotation was computed. [2021-12-14 13:35:06,393 INFO L854 garLoopResultBuilder]: At program point L151-2(lines 151 155) the Hoare annotation is: false [2021-12-14 13:35:06,393 INFO L858 garLoopResultBuilder]: For program point L151-3(lines 151 155) no Hoare annotation was computed. [2021-12-14 13:35:06,393 INFO L858 garLoopResultBuilder]: For program point L168(lines 168 172) no Hoare annotation was computed. [2021-12-14 13:35:06,393 INFO L858 garLoopResultBuilder]: For program point L168-1(lines 159 173) no Hoare annotation was computed. [2021-12-14 13:35:06,393 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-12-14 13:35:06,393 INFO L858 garLoopResultBuilder]: For program point L235(lines 235 238) no Hoare annotation was computed. [2021-12-14 13:35:06,393 INFO L858 garLoopResultBuilder]: For program point L202-1(lines 202 206) no Hoare annotation was computed. [2021-12-14 13:35:06,393 INFO L854 garLoopResultBuilder]: At program point L202-2(lines 202 206) the Hoare annotation is: false [2021-12-14 13:35:06,394 INFO L858 garLoopResultBuilder]: For program point L136-1(lines 136 140) no Hoare annotation was computed. [2021-12-14 13:35:06,394 INFO L858 garLoopResultBuilder]: For program point L202-3(lines 202 206) no Hoare annotation was computed. [2021-12-14 13:35:06,394 INFO L854 garLoopResultBuilder]: At program point L136-2(lines 136 140) the Hoare annotation is: false [2021-12-14 13:35:06,394 INFO L858 garLoopResultBuilder]: For program point L87-1(lines 87 91) no Hoare annotation was computed. [2021-12-14 13:35:06,394 INFO L854 garLoopResultBuilder]: At program point L87-2(lines 87 91) the Hoare annotation is: (and (= (fp.div currentRoundingMode (fp.neg ((_ to_fp 8 24) currentRoundingMode 1.0)) (_ +zero 8 24)) |ULTIMATE.start___ieee754_hypotf_~y#1|) (= currentRoundingMode roundNearestTiesToEven)) [2021-12-14 13:35:06,394 INFO L858 garLoopResultBuilder]: For program point L87-3(lines 87 91) no Hoare annotation was computed. [2021-12-14 13:35:06,394 INFO L858 garLoopResultBuilder]: For program point L236(line 236) no Hoare annotation was computed. [2021-12-14 13:35:06,394 INFO L858 garLoopResultBuilder]: For program point L187-1(lines 187 191) no Hoare annotation was computed. [2021-12-14 13:35:06,394 INFO L854 garLoopResultBuilder]: At program point L187-2(lines 187 191) the Hoare annotation is: false [2021-12-14 13:35:06,394 INFO L858 garLoopResultBuilder]: For program point L187-3(lines 187 191) no Hoare annotation was computed. [2021-12-14 13:35:06,394 INFO L854 garLoopResultBuilder]: At program point L221(lines 213 222) the Hoare annotation is: (exists ((v_arrayElimCell_1 (_ BitVec 32)) (|v_ULTIMATE.start_isinf_float_~ix~1#1_6| (_ BitVec 32)) (|v_ULTIMATE.start___ieee754_hypotf_~ha~0#1_26| (_ BitVec 32))) (let ((.cse0 (bvand (_ bv2147483647 32) v_arrayElimCell_1)) (.cse1 (bvand (_ bv2147483647 32) |v_ULTIMATE.start___ieee754_hypotf_~ha~0#1_26|))) (and (= |ULTIMATE.start_isinf_float_#res#1| (_ bv1 32)) (= (fp ((_ extract 31 31) v_arrayElimCell_1) ((_ extract 30 23) v_arrayElimCell_1) ((_ extract 22 0) v_arrayElimCell_1)) (fp.div roundNearestTiesToEven (fp.neg ((_ to_fp 8 24) roundNearestTiesToEven 1.0)) (_ +zero 8 24))) (= (fp ((_ extract 31 31) |v_ULTIMATE.start_isinf_float_~ix~1#1_6|) ((_ extract 30 23) |v_ULTIMATE.start_isinf_float_~ix~1#1_6|) ((_ extract 22 0) |v_ULTIMATE.start_isinf_float_~ix~1#1_6|)) (fp.add roundNearestTiesToEven (fp ((_ extract 31 31) .cse0) ((_ extract 30 23) .cse0) ((_ extract 22 0) .cse0)) (fp ((_ extract 31 31) .cse1) ((_ extract 30 23) .cse1) ((_ extract 22 0) .cse1)))) (bvsgt (bvadd .cse0 (bvneg .cse1)) (_ bv251658240 32))))) [2021-12-14 13:35:06,394 INFO L858 garLoopResultBuilder]: For program point L123(lines 123 146) no Hoare annotation was computed. [2021-12-14 13:35:06,394 INFO L858 garLoopResultBuilder]: For program point L123-1(lines 83 210) no Hoare annotation was computed. [2021-12-14 13:35:06,394 INFO L861 garLoopResultBuilder]: At program point L239(lines 224 240) the Hoare annotation is: true [2021-12-14 13:35:06,394 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-12-14 13:35:06,394 INFO L858 garLoopResultBuilder]: For program point L124(lines 124 131) no Hoare annotation was computed. [2021-12-14 13:35:06,394 INFO L858 garLoopResultBuilder]: For program point L141(lines 141 145) no Hoare annotation was computed. [2021-12-14 13:35:06,394 INFO L858 garLoopResultBuilder]: For program point L141-1(lines 123 146) no Hoare annotation was computed. [2021-12-14 13:35:06,394 INFO L858 garLoopResultBuilder]: For program point L109(lines 109 113) no Hoare annotation was computed. [2021-12-14 13:35:06,395 INFO L858 garLoopResultBuilder]: For program point L109-1(lines 83 210) no Hoare annotation was computed. [2021-12-14 13:35:06,395 INFO L858 garLoopResultBuilder]: For program point L126(lines 126 127) no Hoare annotation was computed. [2021-12-14 13:35:06,395 INFO L858 garLoopResultBuilder]: For program point L93-1(lines 93 97) no Hoare annotation was computed. [2021-12-14 13:35:06,395 INFO L858 garLoopResultBuilder]: For program point L126-2(lines 124 131) no Hoare annotation was computed. [2021-12-14 13:35:06,396 INFO L854 garLoopResultBuilder]: At program point L93-2(lines 93 97) the Hoare annotation is: (and (= (fp.div currentRoundingMode (fp.neg ((_ to_fp 8 24) currentRoundingMode 1.0)) (_ +zero 8 24)) |ULTIMATE.start___ieee754_hypotf_~y#1|) (exists ((|v_ULTIMATE.start___ieee754_hypotf_~ha~0#1_31| (_ BitVec 32))) (= (bvand (_ bv2147483647 32) |v_ULTIMATE.start___ieee754_hypotf_~ha~0#1_31|) |ULTIMATE.start___ieee754_hypotf_~ha~0#1|)) (= currentRoundingMode roundNearestTiesToEven)) [2021-12-14 13:35:06,396 INFO L858 garLoopResultBuilder]: For program point L93-3(lines 93 97) no Hoare annotation was computed. [2021-12-14 13:35:06,396 INFO L854 garLoopResultBuilder]: At program point L209(lines 83 210) the Hoare annotation is: (exists ((v_arrayElimCell_5 (_ BitVec 32)) (currentRoundingMode RoundingMode)) (and (= |ULTIMATE.start___ieee754_hypotf_#res#1| (let ((.cse0 (bvand (_ bv2147483647 32) v_arrayElimCell_5))) (fp ((_ extract 31 31) .cse0) ((_ extract 30 23) .cse0) ((_ extract 22 0) .cse0)))) (= (fp ((_ extract 31 31) v_arrayElimCell_5) ((_ extract 30 23) v_arrayElimCell_5) ((_ extract 22 0) v_arrayElimCell_5)) (fp.div currentRoundingMode (fp.neg ((_ to_fp 8 24) currentRoundingMode 1.0)) (_ +zero 8 24))))) [2021-12-14 13:35:06,396 INFO L858 garLoopResultBuilder]: For program point L193-1(lines 193 197) no Hoare annotation was computed. [2021-12-14 13:35:06,396 INFO L854 garLoopResultBuilder]: At program point L193-2(lines 193 197) the Hoare annotation is: false [2021-12-14 13:35:06,396 INFO L858 garLoopResultBuilder]: For program point L193-3(lines 193 197) no Hoare annotation was computed. [2021-12-14 13:35:06,396 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-12-14 13:35:06,396 INFO L858 garLoopResultBuilder]: For program point L177(lines 177 200) no Hoare annotation was computed. [2021-12-14 13:35:06,396 INFO L858 garLoopResultBuilder]: For program point L177-2(lines 83 210) no Hoare annotation was computed. [2021-12-14 13:35:06,396 INFO L858 garLoopResultBuilder]: For program point L128-1(lines 128 129) no Hoare annotation was computed. [2021-12-14 13:35:06,396 INFO L858 garLoopResultBuilder]: For program point L178-1(lines 178 182) no Hoare annotation was computed. [2021-12-14 13:35:06,397 INFO L854 garLoopResultBuilder]: At program point L178-2(lines 178 182) the Hoare annotation is: false [2021-12-14 13:35:06,397 INFO L858 garLoopResultBuilder]: For program point L178-3(lines 178 182) no Hoare annotation was computed. [2021-12-14 13:35:06,397 INFO L858 garLoopResultBuilder]: For program point L163-1(lines 163 167) no Hoare annotation was computed. [2021-12-14 13:35:06,397 INFO L854 garLoopResultBuilder]: At program point L163-2(lines 163 167) the Hoare annotation is: false [2021-12-14 13:35:06,397 INFO L858 garLoopResultBuilder]: For program point L147(lines 147 174) no Hoare annotation was computed. [2021-12-14 13:35:06,397 INFO L858 garLoopResultBuilder]: For program point L114(lines 114 118) no Hoare annotation was computed. [2021-12-14 13:35:06,397 INFO L858 garLoopResultBuilder]: For program point L114-1(lines 83 210) no Hoare annotation was computed. [2021-12-14 13:35:06,397 INFO L858 garLoopResultBuilder]: For program point L114-2(lines 83 210) no Hoare annotation was computed. [2021-12-14 13:35:06,397 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-12-14 13:35:06,397 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 236) no Hoare annotation was computed. [2021-12-14 13:35:06,397 INFO L858 garLoopResultBuilder]: For program point L148(lines 148 173) no Hoare annotation was computed. [2021-12-14 13:35:06,397 INFO L858 garLoopResultBuilder]: For program point L99(lines 99 108) no Hoare annotation was computed. [2021-12-14 13:35:06,397 INFO L858 garLoopResultBuilder]: For program point L215-1(lines 215 219) no Hoare annotation was computed. [2021-12-14 13:35:06,397 INFO L854 garLoopResultBuilder]: At program point L215-2(lines 215 219) the Hoare annotation is: (exists ((v_arrayElimCell_5 (_ BitVec 32)) (currentRoundingMode RoundingMode)) (and (= (fp ((_ extract 31 31) v_arrayElimCell_5) ((_ extract 30 23) v_arrayElimCell_5) ((_ extract 22 0) v_arrayElimCell_5)) (fp.div currentRoundingMode (fp.neg ((_ to_fp 8 24) currentRoundingMode 1.0)) (_ +zero 8 24))) (= |ULTIMATE.start_isinf_float_~x#1| (let ((.cse0 (bvand (_ bv2147483647 32) v_arrayElimCell_5))) (fp ((_ extract 31 31) .cse0) ((_ extract 30 23) .cse0) ((_ extract 22 0) .cse0)))))) [2021-12-14 13:35:06,398 INFO L858 garLoopResultBuilder]: For program point L215-3(lines 215 219) no Hoare annotation was computed. [2021-12-14 13:35:06,398 INFO L854 garLoopResultBuilder]: At program point L199(line 199) the Hoare annotation is: false [2021-12-14 13:35:06,398 INFO L858 garLoopResultBuilder]: For program point L199-1(line 199) no Hoare annotation was computed. [2021-12-14 13:35:06,398 INFO L858 garLoopResultBuilder]: For program point L150(lines 150 173) no Hoare annotation was computed. [2021-12-14 13:35:06,398 INFO L858 garLoopResultBuilder]: For program point L31(lines 31 32) no Hoare annotation was computed. [2021-12-14 13:35:06,398 INFO L861 garLoopResultBuilder]: At program point L52-2(lines 52 61) the Hoare annotation is: true [2021-12-14 13:35:06,398 INFO L858 garLoopResultBuilder]: For program point L52-3(lines 16 81) no Hoare annotation was computed. [2021-12-14 13:35:06,398 INFO L858 garLoopResultBuilder]: For program point L44(lines 44 45) no Hoare annotation was computed. [2021-12-14 13:35:06,398 INFO L858 garLoopResultBuilder]: For program point L44-2(lines 44 45) no Hoare annotation was computed. [2021-12-14 13:35:06,398 INFO L858 garLoopResultBuilder]: For program point L65(lines 65 71) no Hoare annotation was computed. [2021-12-14 13:35:06,398 INFO L858 garLoopResultBuilder]: For program point L28(lines 28 29) no Hoare annotation was computed. [2021-12-14 13:35:06,398 INFO L861 garLoopResultBuilder]: At program point __ieee754_sqrtfENTRY(lines 16 81) the Hoare annotation is: true [2021-12-14 13:35:06,399 INFO L858 garLoopResultBuilder]: For program point __ieee754_sqrtfFINAL(lines 16 81) no Hoare annotation was computed. [2021-12-14 13:35:06,399 INFO L858 garLoopResultBuilder]: For program point L37(lines 37 41) no Hoare annotation was computed. [2021-12-14 13:35:06,399 INFO L858 garLoopResultBuilder]: For program point L37-2(lines 37 41) no Hoare annotation was computed. [2021-12-14 13:35:06,399 INFO L858 garLoopResultBuilder]: For program point L33(lines 33 34) no Hoare annotation was computed. [2021-12-14 13:35:06,399 INFO L858 garLoopResultBuilder]: For program point L54(lines 54 58) no Hoare annotation was computed. [2021-12-14 13:35:06,399 INFO L858 garLoopResultBuilder]: For program point L21-1(lines 21 25) no Hoare annotation was computed. [2021-12-14 13:35:06,399 INFO L858 garLoopResultBuilder]: For program point L54-2(lines 54 58) no Hoare annotation was computed. [2021-12-14 13:35:06,399 INFO L858 garLoopResultBuilder]: For program point __ieee754_sqrtfEXIT(lines 16 81) no Hoare annotation was computed. [2021-12-14 13:35:06,399 INFO L861 garLoopResultBuilder]: At program point L21-2(lines 21 25) the Hoare annotation is: true [2021-12-14 13:35:06,399 INFO L858 garLoopResultBuilder]: For program point L21-3(lines 21 25) no Hoare annotation was computed. [2021-12-14 13:35:06,400 INFO L858 garLoopResultBuilder]: For program point L75-1(lines 75 79) no Hoare annotation was computed. [2021-12-14 13:35:06,400 INFO L861 garLoopResultBuilder]: At program point L75-2(lines 75 79) the Hoare annotation is: true [2021-12-14 13:35:06,400 INFO L858 garLoopResultBuilder]: For program point L75-3(lines 75 79) no Hoare annotation was computed. [2021-12-14 13:35:06,400 INFO L858 garLoopResultBuilder]: For program point L38-2(lines 38 39) no Hoare annotation was computed. [2021-12-14 13:35:06,400 INFO L861 garLoopResultBuilder]: At program point L38-3(lines 38 39) the Hoare annotation is: true [2021-12-14 13:35:06,400 INFO L858 garLoopResultBuilder]: For program point L67(lines 67 70) no Hoare annotation was computed. [2021-12-14 13:35:06,400 INFO L858 garLoopResultBuilder]: For program point L38-4(lines 38 39) no Hoare annotation was computed. [2021-12-14 13:35:06,400 INFO L858 garLoopResultBuilder]: For program point L63(lines 63 72) no Hoare annotation was computed. [2021-12-14 13:35:06,403 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 13:35:06,404 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-14 13:35:06,409 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.UnsupportedOperationException: translation of (bvneg (_ BitVec 32) (_ BitVec 32)) not yet implemented, please contact Matthias at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:211) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:456) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:135) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.RCFGBacktranslator.translateExpression(RCFGBacktranslator.java:394) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.RCFGBacktranslator.translateExpression(RCFGBacktranslator.java:1) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateExpression(ModelTranslationContainer.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateExpressionToString(ModelTranslationContainer.java:89) at de.uni_freiburg.informatik.ultimate.core.lib.results.InvariantResult.getLongDescription(InvariantResult.java:65) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ResultService.reportResult(ResultService.java:86) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResultReporter.reportResult(CegarLoopResultReporter.java:141) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.createInvariantResults(TraceAbstractionStarter.java:453) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:192) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-12-14 13:35:06,412 INFO L158 Benchmark]: Toolchain (without parser) took 21984.35ms. Allocated memory was 67.1MB in the beginning and 102.8MB in the end (delta: 35.7MB). Free memory was 47.1MB in the beginning and 58.2MB in the end (delta: -11.0MB). Peak memory consumption was 24.5MB. Max. memory is 16.1GB. [2021-12-14 13:35:06,412 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 67.1MB. Free memory was 47.9MB in the beginning and 47.8MB in the end (delta: 43.7kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-14 13:35:06,412 INFO L158 Benchmark]: CACSL2BoogieTranslator took 276.49ms. Allocated memory is still 67.1MB. Free memory was 46.9MB in the beginning and 46.9MB in the end (delta: 6.0kB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-12-14 13:35:06,412 INFO L158 Benchmark]: Boogie Procedure Inliner took 60.68ms. Allocated memory is still 67.1MB. Free memory was 46.8MB in the beginning and 44.5MB in the end (delta: 2.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-12-14 13:35:06,412 INFO L158 Benchmark]: Boogie Preprocessor took 59.05ms. Allocated memory is still 67.1MB. Free memory was 44.5MB in the beginning and 42.0MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-14 13:35:06,413 INFO L158 Benchmark]: RCFGBuilder took 3146.79ms. Allocated memory is still 67.1MB. Free memory was 42.0MB in the beginning and 39.5MB in the end (delta: 2.5MB). Peak memory consumption was 17.0MB. Max. memory is 16.1GB. [2021-12-14 13:35:06,413 INFO L158 Benchmark]: TraceAbstraction took 18437.10ms. Allocated memory was 67.1MB in the beginning and 102.8MB in the end (delta: 35.7MB). Free memory was 39.2MB in the beginning and 58.2MB in the end (delta: -18.9MB). Peak memory consumption was 16.7MB. Max. memory is 16.1GB. [2021-12-14 13:35:06,414 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 67.1MB. Free memory was 47.9MB in the beginning and 47.8MB in the end (delta: 43.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 276.49ms. Allocated memory is still 67.1MB. Free memory was 46.9MB in the beginning and 46.9MB in the end (delta: 6.0kB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 60.68ms. Allocated memory is still 67.1MB. Free memory was 46.8MB in the beginning and 44.5MB in the end (delta: 2.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 59.05ms. Allocated memory is still 67.1MB. Free memory was 44.5MB in the beginning and 42.0MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 3146.79ms. Allocated memory is still 67.1MB. Free memory was 42.0MB in the beginning and 39.5MB in the end (delta: 2.5MB). Peak memory consumption was 17.0MB. Max. memory is 16.1GB. * TraceAbstraction took 18437.10ms. Allocated memory was 67.1MB in the beginning and 102.8MB in the end (delta: 35.7MB). Free memory was 39.2MB in the beginning and 58.2MB in the end (delta: -18.9MB). Peak memory consumption was 16.7MB. 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: 236]: 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, 89 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 18.4s, OverallIterations: 12, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.4s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 29 SdHoareTripleChecker+Valid, 2.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 29 mSDsluCounter, 6212 SdHoareTripleChecker+Invalid, 2.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 760 IncrementalHoareTripleChecker+Unchecked, 5088 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 31 IncrementalHoareTripleChecker+Invalid, 791 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 1124 mSDtfsCounter, 31 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 282 GetRequests, 213 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 4.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=95occurred in iteration=6, InterpolantAutomatonStates: 93, 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, 12 MinimizatonAttempts, 31 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 20 LocationsWithAnnotation, 65 PreInvPairs, 77 NumberOfFragments, 177 HoareAnnotationTreeSize, 65 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 20 FomulaSimplificationsInter, 367 FormulaSimplificationTreeSizeReductionInter, 0.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 10.8s InterpolantComputationTime, 294 NumberOfCodeBlocks, 294 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 282 ConstructedInterpolants, 171 QuantifiedInterpolants, 4557 SizeOfPredicates, 96 NumberOfNonLiveVariables, 1292 ConjunctsInSsa, 185 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - ExceptionOrErrorResult: UnsupportedOperationException: translation of (bvneg (_ BitVec 32) (_ BitVec 32)) not yet implemented, please contact Matthias de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: UnsupportedOperationException: translation of (bvneg (_ BitVec 32) (_ BitVec 32)) not yet implemented, please contact Matthias: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:211) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-12-14 13:35:06,480 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: ERROR: ExceptionOrErrorResult: UnsupportedOperationException: translation of (bvneg (_ BitVec 32) (_ BitVec 32)) not yet implemented, please contact Matthias