./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loop-floats-scientific-comp/loop3.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 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/loop-floats-scientific-comp/loop3.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 bd7fa6dfe7a0889f513bad4c7cfc96eb426f92168ff26ce4409068874579f6bc --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 14:35:05,315 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 14:35:05,317 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 14:35:05,353 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 14:35:05,354 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 14:35:05,355 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 14:35:05,358 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 14:35:05,363 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 14:35:05,366 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 14:35:05,370 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 14:35:05,372 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 14:35:05,374 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 14:35:05,374 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 14:35:05,376 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 14:35:05,378 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 14:35:05,382 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 14:35:05,383 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 14:35:05,385 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 14:35:05,386 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 14:35:05,393 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 14:35:05,396 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 14:35:05,397 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 14:35:05,398 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 14:35:05,399 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 14:35:05,400 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 14:35:05,403 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 14:35:05,404 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 14:35:05,405 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 14:35:05,406 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 14:35:05,406 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 14:35:05,408 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 14:35:05,408 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 14:35:05,410 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 14:35:05,410 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 14:35:05,411 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 14:35:05,412 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 14:35:05,412 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 14:35:05,412 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 14:35:05,413 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 14:35:05,414 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 14:35:05,415 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 14:35:05,417 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 14:35:05,418 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-22 14:35:05,458 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 14:35:05,458 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 14:35:05,459 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 14:35:05,459 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 14:35:05,460 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 14:35:05,460 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 14:35:05,461 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 14:35:05,461 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 14:35:05,461 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 14:35:05,462 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 14:35:05,462 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 14:35:05,463 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 14:35:05,463 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 14:35:05,463 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 14:35:05,463 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 14:35:05,463 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 14:35:05,464 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 14:35:05,464 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 14:35:05,464 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 14:35:05,464 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 14:35:05,464 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 14:35:05,465 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 14:35:05,465 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 14:35:05,465 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 14:35:05,465 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 14:35:05,466 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 14:35:05,466 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 14:35:05,466 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 14:35:05,466 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 14:35:05,467 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 14:35:05,467 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 14:35:05,467 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 14:35:05,467 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 14:35:05,468 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bd7fa6dfe7a0889f513bad4c7cfc96eb426f92168ff26ce4409068874579f6bc [2022-07-22 14:35:05,722 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 14:35:05,751 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 14:35:05,754 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 14:35:05,755 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 14:35:05,756 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 14:35:05,757 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-floats-scientific-comp/loop3.c [2022-07-22 14:35:05,815 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/21c86ebad/7511dd4a417c4ea7ba088e0e90d0ea31/FLAG0eec72528 [2022-07-22 14:35:06,231 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 14:35:06,231 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-floats-scientific-comp/loop3.c [2022-07-22 14:35:06,237 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/21c86ebad/7511dd4a417c4ea7ba088e0e90d0ea31/FLAG0eec72528 [2022-07-22 14:35:06,629 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/21c86ebad/7511dd4a417c4ea7ba088e0e90d0ea31 [2022-07-22 14:35:06,632 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 14:35:06,633 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 14:35:06,635 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 14:35:06,636 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 14:35:06,639 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 14:35:06,639 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 02:35:06" (1/1) ... [2022-07-22 14:35:06,640 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1911989a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 02:35:06, skipping insertion in model container [2022-07-22 14:35:06,641 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 02:35:06" (1/1) ... [2022-07-22 14:35:06,646 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 14:35:06,658 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 14:35:06,794 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/loop-floats-scientific-comp/loop3.c[472,485] [2022-07-22 14:35:06,817 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 14:35:06,826 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 14:35:06,838 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/loop-floats-scientific-comp/loop3.c[472,485] [2022-07-22 14:35:06,849 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 14:35:06,864 INFO L208 MainTranslator]: Completed translation [2022-07-22 14:35:06,865 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 02:35:06 WrapperNode [2022-07-22 14:35:06,866 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 14:35:06,867 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 14:35:06,867 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 14:35:06,867 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 14:35:06,873 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 02:35:06" (1/1) ... [2022-07-22 14:35:06,881 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 02:35:06" (1/1) ... [2022-07-22 14:35:06,898 INFO L137 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 57 [2022-07-22 14:35:06,898 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 14:35:06,899 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 14:35:06,899 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 14:35:06,900 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 14:35:06,905 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 02:35:06" (1/1) ... [2022-07-22 14:35:06,906 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 02:35:06" (1/1) ... [2022-07-22 14:35:06,916 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 02:35:06" (1/1) ... [2022-07-22 14:35:06,917 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 02:35:06" (1/1) ... [2022-07-22 14:35:06,921 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 02:35:06" (1/1) ... [2022-07-22 14:35:06,925 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 02:35:06" (1/1) ... [2022-07-22 14:35:06,929 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 02:35:06" (1/1) ... [2022-07-22 14:35:06,936 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 14:35:06,937 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 14:35:06,942 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 14:35:06,943 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 14:35:06,944 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 02:35:06" (1/1) ... [2022-07-22 14:35:06,950 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 14:35:06,960 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 14:35:06,981 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) [2022-07-22 14:35:07,000 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 [2022-07-22 14:35:07,016 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 14:35:07,016 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 14:35:07,017 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 14:35:07,017 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 14:35:07,071 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 14:35:07,072 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 14:35:07,156 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 14:35:07,161 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 14:35:07,162 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-22 14:35:07,163 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 02:35:07 BoogieIcfgContainer [2022-07-22 14:35:07,164 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 14:35:07,165 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 14:35:07,165 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 14:35:07,168 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 14:35:07,169 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 02:35:06" (1/3) ... [2022-07-22 14:35:07,170 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@149f09ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 02:35:07, skipping insertion in model container [2022-07-22 14:35:07,170 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 02:35:06" (2/3) ... [2022-07-22 14:35:07,170 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@149f09ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 02:35:07, skipping insertion in model container [2022-07-22 14:35:07,170 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 02:35:07" (3/3) ... [2022-07-22 14:35:07,172 INFO L111 eAbstractionObserver]: Analyzing ICFG loop3.c [2022-07-22 14:35:07,184 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 14:35:07,184 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-22 14:35:07,224 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 14:35:07,229 INFO L357 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, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@451599ab, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@6dd7868e [2022-07-22 14:35:07,230 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-22 14:35:07,237 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 14 states have (on average 1.5) internal successors, (21), 15 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) [2022-07-22 14:35:07,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-07-22 14:35:07,243 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 14:35:07,244 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 14:35:07,244 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 14:35:07,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 14:35:07,249 INFO L85 PathProgramCache]: Analyzing trace with hash 119997515, now seen corresponding path program 1 times [2022-07-22 14:35:07,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 14:35:07,259 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047927274] [2022-07-22 14:35:07,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 14:35:07,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 14:35:07,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 14:35:07,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 14:35:07,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 14:35:07,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047927274] [2022-07-22 14:35:07,395 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047927274] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 14:35:07,395 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 14:35:07,395 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-22 14:35:07,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180428528] [2022-07-22 14:35:07,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 14:35:07,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-22 14:35:07,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 14:35:07,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-22 14:35:07,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-22 14:35:07,456 INFO L87 Difference]: Start difference. First operand has 16 states, 14 states have (on average 1.5) internal successors, (21), 15 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) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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) [2022-07-22 14:35:07,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 14:35:07,471 INFO L93 Difference]: Finished difference Result 29 states and 38 transitions. [2022-07-22 14:35:07,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-22 14:35:07,473 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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 8 [2022-07-22 14:35:07,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 14:35:07,484 INFO L225 Difference]: With dead ends: 29 [2022-07-22 14:35:07,484 INFO L226 Difference]: Without dead ends: 12 [2022-07-22 14:35:07,488 INFO L412 NwaCegarLoop]: 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 [2022-07-22 14:35:07,492 INFO L413 NwaCegarLoop]: 17 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, 17 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 [2022-07-22 14:35:07,494 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 14:35:07,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2022-07-22 14:35:07,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2022-07-22 14:35:07,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 11 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 14:35:07,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 13 transitions. [2022-07-22 14:35:07,520 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 13 transitions. Word has length 8 [2022-07-22 14:35:07,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 14:35:07,522 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 13 transitions. [2022-07-22 14:35:07,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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) [2022-07-22 14:35:07,523 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 13 transitions. [2022-07-22 14:35:07,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-07-22 14:35:07,523 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 14:35:07,524 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 14:35:07,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 14:35:07,524 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 14:35:07,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 14:35:07,525 INFO L85 PathProgramCache]: Analyzing trace with hash -2105434535, now seen corresponding path program 1 times [2022-07-22 14:35:07,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 14:35:07,525 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122681571] [2022-07-22 14:35:07,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 14:35:07,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 14:35:07,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 14:35:07,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 14:35:07,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 14:35:07,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122681571] [2022-07-22 14:35:07,613 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2122681571] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 14:35:07,613 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 14:35:07,613 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 14:35:07,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286604698] [2022-07-22 14:35:07,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 14:35:07,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 14:35:07,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 14:35:07,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 14:35:07,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 14:35:07,616 INFO L87 Difference]: Start difference. First operand 12 states and 13 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 14:35:07,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 14:35:07,630 INFO L93 Difference]: Finished difference Result 23 states and 26 transitions. [2022-07-22 14:35:07,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 14:35:07,630 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-07-22 14:35:07,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 14:35:07,631 INFO L225 Difference]: With dead ends: 23 [2022-07-22 14:35:07,631 INFO L226 Difference]: Without dead ends: 15 [2022-07-22 14:35:07,632 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 14:35:07,633 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 1 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 14:35:07,634 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 19 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 14:35:07,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2022-07-22 14:35:07,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 14. [2022-07-22 14:35:07,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 13 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 14:35:07,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2022-07-22 14:35:07,637 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 11 [2022-07-22 14:35:07,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 14:35:07,638 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2022-07-22 14:35:07,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 14:35:07,638 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2022-07-22 14:35:07,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-07-22 14:35:07,639 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 14:35:07,639 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 14:35:07,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-22 14:35:07,640 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 14:35:07,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 14:35:07,640 INFO L85 PathProgramCache]: Analyzing trace with hash -2048176233, now seen corresponding path program 1 times [2022-07-22 14:35:07,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 14:35:07,641 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788830589] [2022-07-22 14:35:07,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 14:35:07,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 14:35:07,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 14:35:07,658 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-22 14:35:07,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 14:35:07,687 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-22 14:35:07,687 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-22 14:35:07,688 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-07-22 14:35:07,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-22 14:35:07,693 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-07-22 14:35:07,696 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-22 14:35:07,722 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.07 02:35:07 BoogieIcfgContainer [2022-07-22 14:35:07,735 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-22 14:35:07,736 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-22 14:35:07,736 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-22 14:35:07,736 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-22 14:35:07,737 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 02:35:07" (3/4) ... [2022-07-22 14:35:07,739 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-07-22 14:35:07,740 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-22 14:35:07,740 INFO L158 Benchmark]: Toolchain (without parser) took 1106.91ms. Allocated memory was 90.2MB in the beginning and 111.1MB in the end (delta: 21.0MB). Free memory was 55.9MB in the beginning and 71.4MB in the end (delta: -15.4MB). Peak memory consumption was 5.9MB. Max. memory is 16.1GB. [2022-07-22 14:35:07,741 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 90.2MB. Free memory is still 71.9MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-22 14:35:07,741 INFO L158 Benchmark]: CACSL2BoogieTranslator took 230.74ms. Allocated memory was 90.2MB in the beginning and 111.1MB in the end (delta: 21.0MB). Free memory was 55.7MB in the beginning and 87.9MB in the end (delta: -32.2MB). Peak memory consumption was 8.1MB. Max. memory is 16.1GB. [2022-07-22 14:35:07,749 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.77ms. Allocated memory is still 111.1MB. Free memory was 87.9MB in the beginning and 86.4MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-22 14:35:07,750 INFO L158 Benchmark]: Boogie Preprocessor took 36.73ms. Allocated memory is still 111.1MB. Free memory was 86.1MB in the beginning and 85.1MB in the end (delta: 1.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-07-22 14:35:07,750 INFO L158 Benchmark]: RCFGBuilder took 227.05ms. Allocated memory is still 111.1MB. Free memory was 85.1MB in the beginning and 75.8MB in the end (delta: 9.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-22 14:35:07,751 INFO L158 Benchmark]: TraceAbstraction took 570.02ms. Allocated memory is still 111.1MB. Free memory was 75.1MB in the beginning and 71.8MB in the end (delta: 3.3MB). Peak memory consumption was 6.2MB. Max. memory is 16.1GB. [2022-07-22 14:35:07,751 INFO L158 Benchmark]: Witness Printer took 3.70ms. Allocated memory is still 111.1MB. Free memory was 71.8MB in the beginning and 71.4MB in the end (delta: 393.9kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-22 14:35:07,754 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 90.2MB. Free memory is still 71.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 230.74ms. Allocated memory was 90.2MB in the beginning and 111.1MB in the end (delta: 21.0MB). Free memory was 55.7MB in the beginning and 87.9MB in the end (delta: -32.2MB). Peak memory consumption was 8.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 31.77ms. Allocated memory is still 111.1MB. Free memory was 87.9MB in the beginning and 86.4MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 36.73ms. Allocated memory is still 111.1MB. Free memory was 86.1MB in the beginning and 85.1MB in the end (delta: 1.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 227.05ms. Allocated memory is still 111.1MB. Free memory was 85.1MB in the beginning and 75.8MB in the end (delta: 9.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 570.02ms. Allocated memory is still 111.1MB. Free memory was 75.1MB in the beginning and 71.8MB in the end (delta: 3.3MB). Peak memory consumption was 6.2MB. Max. memory is 16.1GB. * Witness Printer took 3.70ms. Allocated memory is still 111.1MB. Free memory was 71.8MB in the beginning and 71.4MB in the end (delta: 393.9kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 13]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 51, overapproximation of to_real at line 22, overapproximation of someBinaryArithmeticFLOAToperation at line 37. Possible FailurePath: [L15] float pi = 3.14159 ; VAL [pi=314159/100000] [L21] float x = __VERIFIER_nondet_float() ; [L22] float octant1 = 0 ; [L23] float octant2 = pi/8 ; [L24] CALL assume_abort_if_not(x > octant1 && x < octant2) [L11] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, pi=314159/100000] [L24] RET assume_abort_if_not(x > octant1 && x < octant2) [L25] float oddExp = x ; [L26] float evenExp = 1.0 ; [L27] float term = x ; [L28] unsigned int count = 2 ; [L29] int multFactor = 0 ; [L30] int temp ; VAL [count=2, evenExp=1, multFactor=0, oddExp=49, pi=314159/100000, term=49, x=49] [L32] COND TRUE 1 [L34] term = term * (x/count) VAL [count=2, evenExp=1, multFactor=0, oddExp=49, pi=314159/100000, x=49] [L35] EXPR (count>>1 % 2 == 0) ? 1 : -1 VAL [(count>>1 % 2 == 0) ? 1 : -1=-1, count=2, evenExp=1, multFactor=0, oddExp=49, pi=314159/100000, x=49] [L35] multFactor = (count>>1 % 2 == 0) ? 1 : -1 [L37] evenExp = evenExp + multFactor*term [L39] count++ [L41] term = term * (x/count) [L43] oddExp = oddExp + multFactor*term [L45] count++ [L47] temp = __VERIFIER_nondet_int() [L48] COND TRUE temp == 0 VAL [count=4, multFactor=-1, pi=314159/100000, temp=0, x=49] [L51] CALL __VERIFIER_assert( evenExp >= oddExp ) [L13] COND TRUE !(cond) VAL [\old(cond)=0, cond=0, pi=314159/100000] [L13] reach_error() VAL [\old(cond)=0, cond=0, pi=314159/100000] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 16 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.5s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1 mSDsluCounter, 36 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 8 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 6 IncrementalHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 28 mSDtfsCounter, 6 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=16occurred in iteration=0, InterpolantAutomatonStates: 5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 30 NumberOfCodeBlocks, 30 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 17 ConstructedInterpolants, 0 QuantifiedInterpolants, 25 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-07-22 14:35:07,809 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/loop-floats-scientific-comp/loop3.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 bd7fa6dfe7a0889f513bad4c7cfc96eb426f92168ff26ce4409068874579f6bc --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 14:35:09,847 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 14:35:09,850 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 14:35:09,898 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 14:35:09,899 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 14:35:09,901 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 14:35:09,905 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 14:35:09,908 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 14:35:09,910 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 14:35:09,915 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 14:35:09,916 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 14:35:09,918 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 14:35:09,918 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 14:35:09,920 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 14:35:09,921 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 14:35:09,925 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 14:35:09,926 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 14:35:09,927 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 14:35:09,930 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 14:35:09,936 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 14:35:09,937 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 14:35:09,938 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 14:35:09,940 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 14:35:09,941 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 14:35:09,943 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 14:35:09,949 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 14:35:09,950 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 14:35:09,950 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 14:35:09,951 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 14:35:09,952 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 14:35:09,953 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 14:35:09,953 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 14:35:09,955 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 14:35:09,955 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 14:35:09,957 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 14:35:09,957 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 14:35:09,958 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 14:35:09,958 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 14:35:09,959 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 14:35:09,959 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 14:35:09,960 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 14:35:09,961 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 14:35:09,969 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-07-22 14:35:10,003 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 14:35:10,004 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 14:35:10,004 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 14:35:10,004 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 14:35:10,005 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 14:35:10,006 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 14:35:10,006 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 14:35:10,007 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 14:35:10,007 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 14:35:10,008 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 14:35:10,008 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 14:35:10,008 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 14:35:10,009 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 14:35:10,009 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 14:35:10,009 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 14:35:10,010 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 14:35:10,010 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-22 14:35:10,010 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-07-22 14:35:10,010 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-07-22 14:35:10,010 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 14:35:10,011 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 14:35:10,011 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 14:35:10,011 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 14:35:10,011 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 14:35:10,012 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 14:35:10,012 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 14:35:10,012 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 14:35:10,012 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 14:35:10,013 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 14:35:10,013 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 14:35:10,013 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-07-22 14:35:10,013 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-07-22 14:35:10,014 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 14:35:10,014 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 14:35:10,014 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 14:35:10,014 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-07-22 14:35:10,014 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bd7fa6dfe7a0889f513bad4c7cfc96eb426f92168ff26ce4409068874579f6bc [2022-07-22 14:35:10,333 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 14:35:10,360 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 14:35:10,363 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 14:35:10,364 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 14:35:10,364 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 14:35:10,366 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-floats-scientific-comp/loop3.c [2022-07-22 14:35:10,424 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3e60eb90d/7403ac49e06c45bc80d81295b798fdde/FLAG420654774 [2022-07-22 14:35:10,828 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 14:35:10,828 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-floats-scientific-comp/loop3.c [2022-07-22 14:35:10,849 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3e60eb90d/7403ac49e06c45bc80d81295b798fdde/FLAG420654774 [2022-07-22 14:35:10,861 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3e60eb90d/7403ac49e06c45bc80d81295b798fdde [2022-07-22 14:35:10,863 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 14:35:10,864 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 14:35:10,866 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 14:35:10,866 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 14:35:10,869 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 14:35:10,870 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 02:35:10" (1/1) ... [2022-07-22 14:35:10,871 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1720bbbd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 02:35:10, skipping insertion in model container [2022-07-22 14:35:10,871 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 02:35:10" (1/1) ... [2022-07-22 14:35:10,877 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 14:35:10,892 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 14:35:11,051 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/loop-floats-scientific-comp/loop3.c[472,485] [2022-07-22 14:35:11,075 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 14:35:11,096 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 14:35:11,149 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/loop-floats-scientific-comp/loop3.c[472,485] [2022-07-22 14:35:11,170 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 14:35:11,185 INFO L208 MainTranslator]: Completed translation [2022-07-22 14:35:11,185 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 02:35:11 WrapperNode [2022-07-22 14:35:11,186 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 14:35:11,187 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 14:35:11,187 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 14:35:11,187 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 14:35:11,193 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 02:35:11" (1/1) ... [2022-07-22 14:35:11,210 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 02:35:11" (1/1) ... [2022-07-22 14:35:11,230 INFO L137 Inliner]: procedures = 16, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 57 [2022-07-22 14:35:11,231 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 14:35:11,232 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 14:35:11,232 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 14:35:11,232 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 14:35:11,239 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 02:35:11" (1/1) ... [2022-07-22 14:35:11,239 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 02:35:11" (1/1) ... [2022-07-22 14:35:11,247 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 02:35:11" (1/1) ... [2022-07-22 14:35:11,247 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 02:35:11" (1/1) ... [2022-07-22 14:35:11,262 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 02:35:11" (1/1) ... [2022-07-22 14:35:11,265 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 02:35:11" (1/1) ... [2022-07-22 14:35:11,266 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 02:35:11" (1/1) ... [2022-07-22 14:35:11,268 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 14:35:11,269 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 14:35:11,269 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 14:35:11,269 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 14:35:11,269 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 02:35:11" (1/1) ... [2022-07-22 14:35:11,277 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 14:35:11,286 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 14:35:11,300 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) [2022-07-22 14:35:11,328 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 [2022-07-22 14:35:11,343 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 14:35:11,343 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-07-22 14:35:11,343 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 14:35:11,343 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 14:35:11,413 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 14:35:11,415 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 14:35:15,838 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 14:35:15,842 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 14:35:15,842 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-22 14:35:15,844 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 02:35:15 BoogieIcfgContainer [2022-07-22 14:35:15,844 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 14:35:15,856 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 14:35:15,856 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 14:35:15,859 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 14:35:15,859 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 02:35:10" (1/3) ... [2022-07-22 14:35:15,860 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69a43d02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 02:35:15, skipping insertion in model container [2022-07-22 14:35:15,860 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 02:35:11" (2/3) ... [2022-07-22 14:35:15,861 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69a43d02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 02:35:15, skipping insertion in model container [2022-07-22 14:35:15,861 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 02:35:15" (3/3) ... [2022-07-22 14:35:15,863 INFO L111 eAbstractionObserver]: Analyzing ICFG loop3.c [2022-07-22 14:35:15,876 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 14:35:15,877 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-22 14:35:15,911 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 14:35:15,917 INFO L357 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, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@e689fc1, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@503b312c [2022-07-22 14:35:15,918 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-22 14:35:15,922 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 14 states have (on average 1.5) internal successors, (21), 15 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) [2022-07-22 14:35:15,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-07-22 14:35:15,927 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 14:35:15,928 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 14:35:15,928 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 14:35:15,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 14:35:15,933 INFO L85 PathProgramCache]: Analyzing trace with hash 119997515, now seen corresponding path program 1 times [2022-07-22 14:35:15,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-22 14:35:15,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2104966571] [2022-07-22 14:35:15,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 14:35:15,945 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-22 14:35:15,945 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-22 14:35:15,951 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) [2022-07-22 14:35:15,990 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-07-22 14:35:16,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 14:35:16,094 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 1 conjunts are in the unsatisfiable core [2022-07-22 14:35:16,098 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 14:35:16,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 14:35:16,116 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 14:35:16,116 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-22 14:35:16,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2104966571] [2022-07-22 14:35:16,118 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2104966571] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 14:35:16,118 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 14:35:16,118 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-22 14:35:16,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344537729] [2022-07-22 14:35:16,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 14:35:16,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-22 14:35:16,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-22 14:35:16,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-22 14:35:16,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-22 14:35:16,158 INFO L87 Difference]: Start difference. First operand has 16 states, 14 states have (on average 1.5) internal successors, (21), 15 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) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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) [2022-07-22 14:35:16,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 14:35:16,170 INFO L93 Difference]: Finished difference Result 29 states and 38 transitions. [2022-07-22 14:35:16,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-22 14:35:16,172 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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 8 [2022-07-22 14:35:16,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 14:35:16,179 INFO L225 Difference]: With dead ends: 29 [2022-07-22 14:35:16,179 INFO L226 Difference]: Without dead ends: 12 [2022-07-22 14:35:16,182 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-22 14:35:16,187 INFO L413 NwaCegarLoop]: 17 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, 17 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 [2022-07-22 14:35:16,202 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 14:35:16,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2022-07-22 14:35:16,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2022-07-22 14:35:16,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 11 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 14:35:16,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 13 transitions. [2022-07-22 14:35:16,228 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 13 transitions. Word has length 8 [2022-07-22 14:35:16,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 14:35:16,228 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 13 transitions. [2022-07-22 14:35:16,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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) [2022-07-22 14:35:16,229 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 13 transitions. [2022-07-22 14:35:16,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-07-22 14:35:16,230 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 14:35:16,230 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 14:35:16,246 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-07-22 14:35:16,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-22 14:35:16,446 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 14:35:16,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 14:35:16,447 INFO L85 PathProgramCache]: Analyzing trace with hash -2105434535, now seen corresponding path program 1 times [2022-07-22 14:35:16,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-22 14:35:16,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [849799686] [2022-07-22 14:35:16,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 14:35:16,448 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-22 14:35:16,448 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-22 14:35:16,449 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) [2022-07-22 14:35:16,450 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-07-22 14:35:16,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 14:35:17,006 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-22 14:35:17,008 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 14:35:17,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 14:35:17,069 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 14:35:17,069 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-22 14:35:17,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [849799686] [2022-07-22 14:35:17,069 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [849799686] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 14:35:17,070 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 14:35:17,070 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 14:35:17,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927493172] [2022-07-22 14:35:17,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 14:35:17,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 14:35:17,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-22 14:35:17,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 14:35:17,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 14:35:17,072 INFO L87 Difference]: Start difference. First operand 12 states and 13 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 14:35:19,350 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-22 14:35:21,689 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.26s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-22 14:35:21,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 14:35:21,784 INFO L93 Difference]: Finished difference Result 23 states and 26 transitions. [2022-07-22 14:35:21,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 14:35:21,785 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-07-22 14:35:21,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 14:35:21,786 INFO L225 Difference]: With dead ends: 23 [2022-07-22 14:35:21,786 INFO L226 Difference]: Without dead ends: 15 [2022-07-22 14:35:21,786 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 14:35:21,787 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 1 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2022-07-22 14:35:21,788 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 17 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 2 Unknown, 0 Unchecked, 4.7s Time] [2022-07-22 14:35:21,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2022-07-22 14:35:21,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 14. [2022-07-22 14:35:21,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 13 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 14:35:21,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2022-07-22 14:35:21,792 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 11 [2022-07-22 14:35:21,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 14:35:21,792 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2022-07-22 14:35:21,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 14:35:21,792 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2022-07-22 14:35:21,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-07-22 14:35:21,793 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 14:35:21,793 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 14:35:21,817 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2022-07-22 14:35:22,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-22 14:35:22,011 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 14:35:22,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 14:35:22,012 INFO L85 PathProgramCache]: Analyzing trace with hash -2048176233, now seen corresponding path program 1 times [2022-07-22 14:35:22,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-22 14:35:22,013 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1252549044] [2022-07-22 14:35:22,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 14:35:22,013 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-22 14:35:22,014 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-22 14:35:22,015 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) [2022-07-22 14:35:22,017 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-07-22 14:35:25,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 14:35:25,842 WARN L261 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 21 conjunts are in the unsatisfiable core [2022-07-22 14:35:25,845 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 14:36:09,824 WARN L233 SmtUtils]: Spent 18.75s on a formula simplification that was a NOOP. DAG size: 30 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-07-22 14:36:49,649 WARN L233 SmtUtils]: Spent 17.99s on a formula simplification that was a NOOP. DAG size: 33 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-07-22 14:37:09,258 WARN L833 $PredicateComparison]: unable to prove that (exists ((|ULTIMATE.start_main_~x~0#1| (_ FloatingPoint 8 24))) (let ((.cse0 ((_ to_fp 8 24) roundNearestTiesToEven (_ bv4294967295 32))) (.cse1 (fp.mul roundNearestTiesToEven |ULTIMATE.start_main_~x~0#1| (fp.div roundNearestTiesToEven |ULTIMATE.start_main_~x~0#1| ((_ to_fp_unsigned 8 24) roundNearestTiesToEven (_ bv2 32)))))) (and (= (fp.add roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 1.0)) (fp.mul roundNearestTiesToEven .cse0 .cse1)) |c_ULTIMATE.start_main_~evenExp~0#1|) (= |c_ULTIMATE.start_main_~oddExp~0#1| (fp.add roundNearestTiesToEven |ULTIMATE.start_main_~x~0#1| (fp.mul roundNearestTiesToEven .cse0 (fp.mul roundNearestTiesToEven .cse1 (fp.div roundNearestTiesToEven |ULTIMATE.start_main_~x~0#1| ((_ to_fp_unsigned 8 24) roundNearestTiesToEven (_ bv3 32))))))) (fp.lt |ULTIMATE.start_main_~x~0#1| (fp.div roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (/ 314159.0 100000.0))) ((_ to_fp 8 24) roundNearestTiesToEven (_ bv8 32)))) (fp.gt |ULTIMATE.start_main_~x~0#1| ((_ to_fp 8 24) roundNearestTiesToEven (_ bv0 32)))))) is different from false [2022-07-22 14:37:11,337 WARN L855 $PredicateComparison]: unable to prove that (exists ((|ULTIMATE.start_main_~x~0#1| (_ FloatingPoint 8 24))) (let ((.cse0 ((_ to_fp 8 24) roundNearestTiesToEven (_ bv4294967295 32))) (.cse1 (fp.mul roundNearestTiesToEven |ULTIMATE.start_main_~x~0#1| (fp.div roundNearestTiesToEven |ULTIMATE.start_main_~x~0#1| ((_ to_fp_unsigned 8 24) roundNearestTiesToEven (_ bv2 32)))))) (and (= (fp.add roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 1.0)) (fp.mul roundNearestTiesToEven .cse0 .cse1)) |c_ULTIMATE.start_main_~evenExp~0#1|) (= |c_ULTIMATE.start_main_~oddExp~0#1| (fp.add roundNearestTiesToEven |ULTIMATE.start_main_~x~0#1| (fp.mul roundNearestTiesToEven .cse0 (fp.mul roundNearestTiesToEven .cse1 (fp.div roundNearestTiesToEven |ULTIMATE.start_main_~x~0#1| ((_ to_fp_unsigned 8 24) roundNearestTiesToEven (_ bv3 32))))))) (fp.lt |ULTIMATE.start_main_~x~0#1| (fp.div roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (/ 314159.0 100000.0))) ((_ to_fp 8 24) roundNearestTiesToEven (_ bv8 32)))) (fp.gt |ULTIMATE.start_main_~x~0#1| ((_ to_fp 8 24) roundNearestTiesToEven (_ bv0 32)))))) is different from true [2022-07-22 14:38:01,063 WARN L833 $PredicateComparison]: unable to prove that (or (and (exists ((|ULTIMATE.start_main_~x~0#1| (_ FloatingPoint 8 24))) (and (fp.lt |ULTIMATE.start_main_~x~0#1| (fp.div roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (/ 314159.0 100000.0))) ((_ to_fp 8 24) roundNearestTiesToEven (_ bv8 32)))) (let ((.cse0 ((_ to_fp 8 24) roundNearestTiesToEven (_ bv4294967295 32))) (.cse1 (fp.mul roundNearestTiesToEven |ULTIMATE.start_main_~x~0#1| (fp.div roundNearestTiesToEven |ULTIMATE.start_main_~x~0#1| ((_ to_fp_unsigned 8 24) roundNearestTiesToEven (_ bv2 32)))))) (fp.geq (fp.add roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 1.0)) (fp.mul roundNearestTiesToEven .cse0 .cse1)) (fp.add roundNearestTiesToEven |ULTIMATE.start_main_~x~0#1| (fp.mul roundNearestTiesToEven .cse0 (fp.mul roundNearestTiesToEven .cse1 (fp.div roundNearestTiesToEven |ULTIMATE.start_main_~x~0#1| ((_ to_fp_unsigned 8 24) roundNearestTiesToEven (_ bv3 32)))))))) (fp.gt |ULTIMATE.start_main_~x~0#1| ((_ to_fp 8 24) roundNearestTiesToEven (_ bv0 32))))) (= |c_ULTIMATE.start___VERIFIER_assert_~cond#1| (_ bv1 32))) (and (exists ((|ULTIMATE.start_main_~x~0#1| (_ FloatingPoint 8 24))) (and (not (let ((.cse2 ((_ to_fp 8 24) roundNearestTiesToEven (_ bv4294967295 32))) (.cse3 (fp.mul roundNearestTiesToEven |ULTIMATE.start_main_~x~0#1| (fp.div roundNearestTiesToEven |ULTIMATE.start_main_~x~0#1| ((_ to_fp_unsigned 8 24) roundNearestTiesToEven (_ bv2 32)))))) (fp.geq (fp.add roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 1.0)) (fp.mul roundNearestTiesToEven .cse2 .cse3)) (fp.add roundNearestTiesToEven |ULTIMATE.start_main_~x~0#1| (fp.mul roundNearestTiesToEven .cse2 (fp.mul roundNearestTiesToEven .cse3 (fp.div roundNearestTiesToEven |ULTIMATE.start_main_~x~0#1| ((_ to_fp_unsigned 8 24) roundNearestTiesToEven (_ bv3 32))))))))) (fp.lt |ULTIMATE.start_main_~x~0#1| (fp.div roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (/ 314159.0 100000.0))) ((_ to_fp 8 24) roundNearestTiesToEven (_ bv8 32)))) (fp.gt |ULTIMATE.start_main_~x~0#1| ((_ to_fp 8 24) roundNearestTiesToEven (_ bv0 32))))) (= |c_ULTIMATE.start___VERIFIER_assert_~cond#1| (_ bv0 32)))) is different from false [2022-07-22 14:38:18,329 WARN L833 $PredicateComparison]: unable to prove that (exists ((|ULTIMATE.start_main_~x~0#1| (_ FloatingPoint 8 24))) (and (not (let ((.cse0 ((_ to_fp 8 24) roundNearestTiesToEven (_ bv4294967295 32))) (.cse1 (fp.mul roundNearestTiesToEven |ULTIMATE.start_main_~x~0#1| (fp.div roundNearestTiesToEven |ULTIMATE.start_main_~x~0#1| ((_ to_fp_unsigned 8 24) roundNearestTiesToEven (_ bv2 32)))))) (fp.geq (fp.add roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 1.0)) (fp.mul roundNearestTiesToEven .cse0 .cse1)) (fp.add roundNearestTiesToEven |ULTIMATE.start_main_~x~0#1| (fp.mul roundNearestTiesToEven .cse0 (fp.mul roundNearestTiesToEven .cse1 (fp.div roundNearestTiesToEven |ULTIMATE.start_main_~x~0#1| ((_ to_fp_unsigned 8 24) roundNearestTiesToEven (_ bv3 32))))))))) (fp.lt |ULTIMATE.start_main_~x~0#1| (fp.div roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (/ 314159.0 100000.0))) ((_ to_fp 8 24) roundNearestTiesToEven (_ bv8 32)))) (fp.gt |ULTIMATE.start_main_~x~0#1| ((_ to_fp 8 24) roundNearestTiesToEven (_ bv0 32))))) is different from false [2022-07-22 14:38:20,403 WARN L855 $PredicateComparison]: unable to prove that (exists ((|ULTIMATE.start_main_~x~0#1| (_ FloatingPoint 8 24))) (and (not (let ((.cse0 ((_ to_fp 8 24) roundNearestTiesToEven (_ bv4294967295 32))) (.cse1 (fp.mul roundNearestTiesToEven |ULTIMATE.start_main_~x~0#1| (fp.div roundNearestTiesToEven |ULTIMATE.start_main_~x~0#1| ((_ to_fp_unsigned 8 24) roundNearestTiesToEven (_ bv2 32)))))) (fp.geq (fp.add roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 1.0)) (fp.mul roundNearestTiesToEven .cse0 .cse1)) (fp.add roundNearestTiesToEven |ULTIMATE.start_main_~x~0#1| (fp.mul roundNearestTiesToEven .cse0 (fp.mul roundNearestTiesToEven .cse1 (fp.div roundNearestTiesToEven |ULTIMATE.start_main_~x~0#1| ((_ to_fp_unsigned 8 24) roundNearestTiesToEven (_ bv3 32))))))))) (fp.lt |ULTIMATE.start_main_~x~0#1| (fp.div roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (/ 314159.0 100000.0))) ((_ to_fp 8 24) roundNearestTiesToEven (_ bv8 32)))) (fp.gt |ULTIMATE.start_main_~x~0#1| ((_ to_fp 8 24) roundNearestTiesToEven (_ bv0 32))))) is different from true [2022-07-22 14:38:20,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 14:38:20,404 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 14:38:20,405 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-22 14:38:20,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1252549044] [2022-07-22 14:38:20,405 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1252549044] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 14:38:20,405 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 14:38:20,405 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-22 14:38:20,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062643311] [2022-07-22 14:38:20,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 14:38:20,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-22 14:38:20,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-22 14:38:20,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-22 14:38:20,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=40, Unknown=5, NotChecked=42, Total=110 [2022-07-22 14:38:20,407 INFO L87 Difference]: Start difference. First operand 14 states and 15 transitions. Second operand has 11 states, 10 states have (on average 1.1) internal successors, (11), 10 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 14:38:26,503 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-22 14:38:27,595 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-22 14:38:29,941 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.26s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-22 14:38:30,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 14:38:30,135 INFO L93 Difference]: Finished difference Result 20 states and 21 transitions. [2022-07-22 14:38:30,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-22 14:38:30,146 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 1.1) internal successors, (11), 10 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-07-22 14:38:30,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 14:38:30,146 INFO L225 Difference]: With dead ends: 20 [2022-07-22 14:38:30,146 INFO L226 Difference]: Without dead ends: 16 [2022-07-22 14:38:30,147 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 64.3s TimeCoverageRelationStatistics Valid=41, Invalid=76, Unknown=5, NotChecked=60, Total=182 [2022-07-22 14:38:30,148 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 8 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 24 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2022-07-22 14:38:30,148 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 15 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 2 Unknown, 24 Unchecked, 6.5s Time] [2022-07-22 14:38:30,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2022-07-22 14:38:30,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2022-07-22 14:38:30,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 15 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 14:38:30,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2022-07-22 14:38:30,155 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 11 [2022-07-22 14:38:30,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 14:38:30,156 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2022-07-22 14:38:30,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 1.1) internal successors, (11), 10 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 14:38:30,157 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2022-07-22 14:38:30,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-07-22 14:38:30,158 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 14:38:30,158 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 14:38:30,179 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2022-07-22 14:38:30,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-22 14:38:30,364 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 14:38:30,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 14:38:30,364 INFO L85 PathProgramCache]: Analyzing trace with hash 1599389039, now seen corresponding path program 1 times [2022-07-22 14:38:30,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-22 14:38:30,365 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [478775220] [2022-07-22 14:38:30,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 14:38:30,365 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-22 14:38:30,366 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-22 14:38:30,367 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) [2022-07-22 14:38:30,370 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-07-22 14:38:31,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 14:38:31,451 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-22 14:38:31,452 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 14:38:31,598 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 14:38:31,598 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 14:38:31,805 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 14:38:31,805 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-22 14:38:31,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [478775220] [2022-07-22 14:38:31,806 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [478775220] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 14:38:31,806 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-22 14:38:31,806 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2022-07-22 14:38:31,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498210472] [2022-07-22 14:38:31,806 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-22 14:38:31,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 14:38:31,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-22 14:38:31,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 14:38:31,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-07-22 14:38:31,807 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. Second operand has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 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) [2022-07-22 14:38:34,357 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-22 14:38:36,624 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-22 14:38:38,847 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.22s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-22 14:38:41,122 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-22 14:38:41,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 14:38:41,239 INFO L93 Difference]: Finished difference Result 35 states and 39 transitions. [2022-07-22 14:38:41,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 14:38:41,239 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-07-22 14:38:41,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 14:38:41,240 INFO L225 Difference]: With dead ends: 35 [2022-07-22 14:38:41,240 INFO L226 Difference]: Without dead ends: 27 [2022-07-22 14:38:41,240 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-07-22 14:38:41,241 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 9 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 3 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.4s IncrementalHoareTripleChecker+Time [2022-07-22 14:38:41,242 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 25 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 9 Invalid, 4 Unknown, 0 Unchecked, 9.4s Time] [2022-07-22 14:38:41,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-07-22 14:38:41,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 22. [2022-07-22 14:38:41,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.1428571428571428) internal successors, (24), 21 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) [2022-07-22 14:38:41,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2022-07-22 14:38:41,245 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 15 [2022-07-22 14:38:41,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 14:38:41,246 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2022-07-22 14:38:41,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 states have internal predecessors, (22), 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) [2022-07-22 14:38:41,246 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2022-07-22 14:38:41,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-07-22 14:38:41,246 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 14:38:41,246 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 14:38:41,277 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-07-22 14:38:41,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-22 14:38:41,456 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 14:38:41,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 14:38:41,457 INFO L85 PathProgramCache]: Analyzing trace with hash 1656647341, now seen corresponding path program 1 times [2022-07-22 14:38:41,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-22 14:38:41,457 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [253192974] [2022-07-22 14:38:41,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 14:38:41,457 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-22 14:38:41,458 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-22 14:38:41,459 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) [2022-07-22 14:38:41,460 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-07-22 14:39:03,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 14:39:04,079 WARN L261 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 28 conjunts are in the unsatisfiable core [2022-07-22 14:39:04,081 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 14:39:41,341 WARN L233 SmtUtils]: Spent 13.97s on a formula simplification that was a NOOP. DAG size: 30 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)