./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loop-floats-scientific-comp/loop1-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 35987657 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/loop1-1.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 259166f87cdd7847094aaf95c1b6c2506a27351f8fceb58c6f5bc2db5fb43f03 --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 01:58:00,461 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 01:58:00,463 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 01:58:00,509 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 01:58:00,510 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 01:58:00,511 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 01:58:00,515 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 01:58:00,517 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 01:58:00,519 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 01:58:00,525 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 01:58:00,526 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 01:58:00,531 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 01:58:00,532 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 01:58:00,534 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 01:58:00,536 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 01:58:00,539 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 01:58:00,540 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 01:58:00,540 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 01:58:00,542 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 01:58:00,545 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 01:58:00,548 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 01:58:00,549 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 01:58:00,550 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 01:58:00,551 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 01:58:00,553 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 01:58:00,557 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 01:58:00,558 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 01:58:00,558 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 01:58:00,559 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 01:58:00,559 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 01:58:00,560 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 01:58:00,560 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 01:58:00,562 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 01:58:00,562 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 01:58:00,564 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 01:58:00,564 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 01:58:00,565 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 01:58:00,565 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 01:58:00,565 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 01:58:00,566 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 01:58:00,566 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 01:58:00,568 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 01:58:00,569 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-21 01:58:00,594 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 01:58:00,596 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 01:58:00,596 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 01:58:00,596 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 01:58:00,597 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 01:58:00,597 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 01:58:00,598 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 01:58:00,598 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 01:58:00,598 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 01:58:00,599 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 01:58:00,599 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 01:58:00,600 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 01:58:00,600 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 01:58:00,600 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 01:58:00,600 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 01:58:00,600 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 01:58:00,600 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 01:58:00,601 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 01:58:00,601 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 01:58:00,601 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 01:58:00,601 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 01:58:00,601 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 01:58:00,602 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 01:58:00,602 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 01:58:00,602 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 01:58:00,602 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 01:58:00,602 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 01:58:00,603 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 01:58:00,603 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 01:58:00,603 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 01:58:00,603 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 01:58:00,604 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 01:58:00,604 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 01:58:00,604 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 259166f87cdd7847094aaf95c1b6c2506a27351f8fceb58c6f5bc2db5fb43f03 [2022-07-21 01:58:00,912 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 01:58:00,937 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 01:58:00,939 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 01:58:00,940 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 01:58:00,941 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 01:58:00,942 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-floats-scientific-comp/loop1-1.c [2022-07-21 01:58:00,998 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1ae4006c0/9cdfd21f96e24d3a9677edace7ed4f1d/FLAGaf220a967 [2022-07-21 01:58:01,438 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 01:58:01,439 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-floats-scientific-comp/loop1-1.c [2022-07-21 01:58:01,444 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1ae4006c0/9cdfd21f96e24d3a9677edace7ed4f1d/FLAGaf220a967 [2022-07-21 01:58:01,864 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1ae4006c0/9cdfd21f96e24d3a9677edace7ed4f1d [2022-07-21 01:58:01,866 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 01:58:01,867 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 01:58:01,869 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 01:58:01,869 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 01:58:01,873 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 01:58:01,873 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 01:58:01" (1/1) ... [2022-07-21 01:58:01,875 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3fc54cfd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:58:01, skipping insertion in model container [2022-07-21 01:58:01,875 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 01:58:01" (1/1) ... [2022-07-21 01:58:01,881 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 01:58:01,893 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 01:58:02,005 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/loop1-1.c[497,510] [2022-07-21 01:58:02,020 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 01:58:02,026 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 01:58:02,036 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/loop1-1.c[497,510] [2022-07-21 01:58:02,039 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 01:58:02,056 INFO L208 MainTranslator]: Completed translation [2022-07-21 01:58:02,075 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:58:02 WrapperNode [2022-07-21 01:58:02,075 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 01:58:02,076 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 01:58:02,076 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 01:58:02,076 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 01:58:02,082 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:58:02" (1/1) ... [2022-07-21 01:58:02,088 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:58:02" (1/1) ... [2022-07-21 01:58:02,102 INFO L137 Inliner]: procedures = 15, calls = 10, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 41 [2022-07-21 01:58:02,103 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 01:58:02,104 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 01:58:02,104 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 01:58:02,104 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 01:58:02,110 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:58:02" (1/1) ... [2022-07-21 01:58:02,110 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:58:02" (1/1) ... [2022-07-21 01:58:02,112 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:58:02" (1/1) ... [2022-07-21 01:58:02,112 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:58:02" (1/1) ... [2022-07-21 01:58:02,124 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:58:02" (1/1) ... [2022-07-21 01:58:02,128 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:58:02" (1/1) ... [2022-07-21 01:58:02,129 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:58:02" (1/1) ... [2022-07-21 01:58:02,134 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 01:58:02,136 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 01:58:02,136 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 01:58:02,137 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 01:58:02,137 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:58:02" (1/1) ... [2022-07-21 01:58:02,143 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 01:58:02,152 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 01:58:02,164 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) [2022-07-21 01:58:02,189 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 [2022-07-21 01:58:02,204 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 01:58:02,204 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-21 01:58:02,204 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-21 01:58:02,204 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 01:58:02,205 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 01:58:02,205 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 01:58:02,265 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 01:58:02,267 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 01:58:02,400 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 01:58:02,406 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 01:58:02,406 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-21 01:58:02,408 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 01:58:02 BoogieIcfgContainer [2022-07-21 01:58:02,409 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 01:58:02,411 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 01:58:02,412 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 01:58:02,414 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 01:58:02,414 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 01:58:01" (1/3) ... [2022-07-21 01:58:02,415 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@663ca683 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 01:58:02, skipping insertion in model container [2022-07-21 01:58:02,415 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:58:02" (2/3) ... [2022-07-21 01:58:02,416 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@663ca683 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 01:58:02, skipping insertion in model container [2022-07-21 01:58:02,416 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 01:58:02" (3/3) ... [2022-07-21 01:58:02,417 INFO L111 eAbstractionObserver]: Analyzing ICFG loop1-1.c [2022-07-21 01:58:02,429 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 01:58:02,429 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-21 01:58:02,483 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 01:58:02,490 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@375ae8dc, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@9239872 [2022-07-21 01:58:02,491 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-21 01:58:02,502 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 15 states have internal predecessors, (20), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-21 01:58:02,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-07-21 01:58:02,509 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 01:58:02,510 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 01:58:02,511 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 01:58:02,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 01:58:02,514 INFO L85 PathProgramCache]: Analyzing trace with hash 1019803906, now seen corresponding path program 1 times [2022-07-21 01:58:02,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 01:58:02,522 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379721142] [2022-07-21 01:58:02,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 01:58:02,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 01:58:02,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 01:58:02,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 01:58:02,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 01:58:02,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 01:58:02,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 01:58:02,686 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-21 01:58:02,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 01:58:02,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379721142] [2022-07-21 01:58:02,688 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379721142] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 01:58:02,688 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 01:58:02,688 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-21 01:58:02,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892780831] [2022-07-21 01:58:02,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 01:58:02,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-21 01:58:02,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 01:58:02,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-21 01:58:02,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-21 01:58:02,723 INFO L87 Difference]: Start difference. First operand has 19 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 15 states have internal predecessors, (20), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-21 01:58:02,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 01:58:02,739 INFO L93 Difference]: Finished difference Result 35 states and 46 transitions. [2022-07-21 01:58:02,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-21 01:58:02,741 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 17 [2022-07-21 01:58:02,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 01:58:02,746 INFO L225 Difference]: With dead ends: 35 [2022-07-21 01:58:02,746 INFO L226 Difference]: Without dead ends: 15 [2022-07-21 01:58:02,752 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-21 01:58:02,755 INFO L413 NwaCegarLoop]: 20 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, 20 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 [2022-07-21 01:58:02,757 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 01:58:02,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2022-07-21 01:58:02,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2022-07-21 01:58:02,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-21 01:58:02,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2022-07-21 01:58:02,788 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 17 [2022-07-21 01:58:02,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 01:58:02,788 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2022-07-21 01:58:02,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-21 01:58:02,789 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2022-07-21 01:58:02,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-07-21 01:58:02,791 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 01:58:02,791 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 01:58:02,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-21 01:58:02,792 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 01:58:02,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 01:58:02,793 INFO L85 PathProgramCache]: Analyzing trace with hash 1211444824, now seen corresponding path program 1 times [2022-07-21 01:58:02,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 01:58:02,793 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477128470] [2022-07-21 01:58:02,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 01:58:02,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 01:58:02,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-21 01:58:02,853 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-21 01:58:02,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-21 01:58:02,917 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-21 01:58:02,918 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-21 01:58:02,919 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-07-21 01:58:02,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-21 01:58:02,926 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1] [2022-07-21 01:58:02,929 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-21 01:58:02,954 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 01:58:02 BoogieIcfgContainer [2022-07-21 01:58:02,954 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-21 01:58:02,955 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-21 01:58:02,955 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-21 01:58:02,956 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-21 01:58:02,956 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 01:58:02" (3/4) ... [2022-07-21 01:58:02,959 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-07-21 01:58:02,959 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-21 01:58:02,960 INFO L158 Benchmark]: Toolchain (without parser) took 1092.27ms. Allocated memory was 60.8MB in the beginning and 73.4MB in the end (delta: 12.6MB). Free memory was 39.5MB in the beginning and 38.1MB in the end (delta: 1.4MB). Peak memory consumption was 13.0MB. Max. memory is 16.1GB. [2022-07-21 01:58:02,961 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 60.8MB. Free memory was 43.1MB in the beginning and 43.0MB in the end (delta: 42.6kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-21 01:58:02,963 INFO L158 Benchmark]: CACSL2BoogieTranslator took 206.43ms. Allocated memory is still 60.8MB. Free memory was 39.3MB in the beginning and 45.3MB in the end (delta: -6.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-07-21 01:58:02,964 INFO L158 Benchmark]: Boogie Procedure Inliner took 26.74ms. Allocated memory is still 60.8MB. Free memory was 45.1MB in the beginning and 43.8MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-21 01:58:02,965 INFO L158 Benchmark]: Boogie Preprocessor took 30.88ms. Allocated memory is still 60.8MB. Free memory was 43.8MB in the beginning and 42.7MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-21 01:58:02,967 INFO L158 Benchmark]: RCFGBuilder took 272.86ms. Allocated memory is still 60.8MB. Free memory was 42.5MB in the beginning and 33.9MB in the end (delta: 8.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-21 01:58:02,967 INFO L158 Benchmark]: TraceAbstraction took 543.30ms. Allocated memory was 60.8MB in the beginning and 73.4MB in the end (delta: 12.6MB). Free memory was 33.3MB in the beginning and 38.4MB in the end (delta: -5.1MB). Peak memory consumption was 9.8MB. Max. memory is 16.1GB. [2022-07-21 01:58:02,968 INFO L158 Benchmark]: Witness Printer took 4.08ms. Allocated memory is still 73.4MB. Free memory was 38.4MB in the beginning and 38.1MB in the end (delta: 312.2kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-21 01:58:02,973 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 60.8MB. Free memory was 43.1MB in the beginning and 43.0MB in the end (delta: 42.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 206.43ms. Allocated memory is still 60.8MB. Free memory was 39.3MB in the beginning and 45.3MB in the end (delta: -6.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 26.74ms. Allocated memory is still 60.8MB. Free memory was 45.1MB in the beginning and 43.8MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 30.88ms. Allocated memory is still 60.8MB. Free memory was 43.8MB in the beginning and 42.7MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 272.86ms. Allocated memory is still 60.8MB. Free memory was 42.5MB in the beginning and 33.9MB in the end (delta: 8.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 543.30ms. Allocated memory was 60.8MB in the beginning and 73.4MB in the end (delta: 12.6MB). Free memory was 33.3MB in the beginning and 38.4MB in the end (delta: -5.1MB). Peak memory consumption was 9.8MB. Max. memory is 16.1GB. * Witness Printer took 4.08ms. Allocated memory is still 73.4MB. Free memory was 38.4MB in the beginning and 38.1MB in the end (delta: 312.2kB). 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 someBinaryDOUBLEComparisonOperation at line 22, overapproximation of someBinaryFLOATComparisonOperation at line 39, overapproximation of someBinaryArithmeticFLOAToperation at line 31. Possible FailurePath: [L20] float x = __VERIFIER_nondet_float() ; [L21] CALL assume_abort_if_not(x > -1.0) VAL [\old(cond)=1] [L11] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L21] RET assume_abort_if_not(x > -1.0) [L22] CALL assume_abort_if_not(x < 1.0) VAL [\old(cond)=1] [L11] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L22] RET assume_abort_if_not(x < 1.0) [L23] float exp = 1.0 ; [L24] float term = 1.0 ; [L25] unsigned int count = 1 ; [L26] float result = 2*(1/(1-x)) ; [L27] int temp ; VAL [count=1, exp=1, term=1] [L29] COND TRUE 1 [L31] term = term * (x/count) [L32] exp = exp + term [L33] count++ [L35] temp = __VERIFIER_nondet_int() [L36] COND TRUE temp ==0 VAL [count=2, temp=0] [L39] CALL __VERIFIER_assert( result >= exp ) [L13] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L13] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 19 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.5s, OverallIterations: 2, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 20 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 0 IncrementalHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 20 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 35 NumberOfCodeBlocks, 35 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 16 ConstructedInterpolants, 0 QuantifiedInterpolants, 16 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 4/4 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 [2022-07-21 01:58:03,022 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/loop1-1.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 259166f87cdd7847094aaf95c1b6c2506a27351f8fceb58c6f5bc2db5fb43f03 --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 01:58:04,860 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 01:58:04,862 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 01:58:04,896 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 01:58:04,897 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 01:58:04,898 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 01:58:04,902 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 01:58:04,905 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 01:58:04,907 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 01:58:04,912 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 01:58:04,913 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 01:58:04,918 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 01:58:04,918 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 01:58:04,920 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 01:58:04,921 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 01:58:04,923 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 01:58:04,926 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 01:58:04,926 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 01:58:04,928 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 01:58:04,930 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 01:58:04,934 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 01:58:04,935 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 01:58:04,936 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 01:58:04,938 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 01:58:04,938 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 01:58:04,941 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 01:58:04,942 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 01:58:04,943 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 01:58:04,943 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 01:58:04,944 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 01:58:04,945 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 01:58:04,945 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 01:58:04,947 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 01:58:04,947 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 01:58:04,948 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 01:58:04,949 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 01:58:04,949 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 01:58:04,950 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 01:58:04,950 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 01:58:04,950 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 01:58:04,951 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 01:58:04,952 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 01:58:04,953 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-07-21 01:58:04,990 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 01:58:04,991 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 01:58:04,991 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 01:58:04,991 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 01:58:04,992 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 01:58:04,992 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 01:58:04,993 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 01:58:04,993 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 01:58:04,993 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 01:58:04,994 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 01:58:04,994 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 01:58:04,994 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 01:58:04,995 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 01:58:05,008 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 01:58:05,008 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 01:58:05,009 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 01:58:05,009 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-21 01:58:05,009 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-07-21 01:58:05,009 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-07-21 01:58:05,009 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 01:58:05,010 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 01:58:05,010 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 01:58:05,010 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 01:58:05,010 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 01:58:05,010 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 01:58:05,011 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 01:58:05,011 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 01:58:05,011 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 01:58:05,011 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 01:58:05,011 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 01:58:05,012 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-07-21 01:58:05,012 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-07-21 01:58:05,012 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 01:58:05,012 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 01:58:05,013 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 01:58:05,013 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-07-21 01:58:05,013 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 259166f87cdd7847094aaf95c1b6c2506a27351f8fceb58c6f5bc2db5fb43f03 [2022-07-21 01:58:05,307 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 01:58:05,333 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 01:58:05,336 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 01:58:05,337 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 01:58:05,337 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 01:58:05,340 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-floats-scientific-comp/loop1-1.c [2022-07-21 01:58:05,397 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ac39a081a/39dcb9f84fe14b72824bfeffd83f5ea3/FLAG3d552122c [2022-07-21 01:58:05,805 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 01:58:05,805 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-floats-scientific-comp/loop1-1.c [2022-07-21 01:58:05,810 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ac39a081a/39dcb9f84fe14b72824bfeffd83f5ea3/FLAG3d552122c [2022-07-21 01:58:05,820 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ac39a081a/39dcb9f84fe14b72824bfeffd83f5ea3 [2022-07-21 01:58:05,822 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 01:58:05,823 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 01:58:05,824 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 01:58:05,824 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 01:58:05,827 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 01:58:05,828 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 01:58:05" (1/1) ... [2022-07-21 01:58:05,828 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e4a9707 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:58:05, skipping insertion in model container [2022-07-21 01:58:05,829 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 01:58:05" (1/1) ... [2022-07-21 01:58:05,834 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 01:58:05,844 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 01:58:05,985 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/loop1-1.c[497,510] [2022-07-21 01:58:06,004 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 01:58:06,014 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 01:58:06,066 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/loop1-1.c[497,510] [2022-07-21 01:58:06,073 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 01:58:06,092 INFO L208 MainTranslator]: Completed translation [2022-07-21 01:58:06,094 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:58:06 WrapperNode [2022-07-21 01:58:06,094 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 01:58:06,095 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 01:58:06,095 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 01:58:06,095 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 01:58:06,101 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:58:06" (1/1) ... [2022-07-21 01:58:06,111 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:58:06" (1/1) ... [2022-07-21 01:58:06,127 INFO L137 Inliner]: procedures = 16, calls = 10, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 41 [2022-07-21 01:58:06,128 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 01:58:06,129 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 01:58:06,129 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 01:58:06,129 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 01:58:06,135 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:58:06" (1/1) ... [2022-07-21 01:58:06,136 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:58:06" (1/1) ... [2022-07-21 01:58:06,148 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:58:06" (1/1) ... [2022-07-21 01:58:06,149 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:58:06" (1/1) ... [2022-07-21 01:58:06,159 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:58:06" (1/1) ... [2022-07-21 01:58:06,166 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:58:06" (1/1) ... [2022-07-21 01:58:06,167 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:58:06" (1/1) ... [2022-07-21 01:58:06,169 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 01:58:06,170 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 01:58:06,170 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 01:58:06,170 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 01:58:06,170 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:58:06" (1/1) ... [2022-07-21 01:58:06,176 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 01:58:06,184 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 01:58:06,200 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) [2022-07-21 01:58:06,225 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 [2022-07-21 01:58:06,243 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 01:58:06,244 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-07-21 01:58:06,244 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-21 01:58:06,244 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-21 01:58:06,244 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 01:58:06,244 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 01:58:06,309 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 01:58:06,310 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 01:58:08,821 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 01:58:08,826 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 01:58:08,826 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-21 01:58:08,828 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 01:58:08 BoogieIcfgContainer [2022-07-21 01:58:08,828 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 01:58:08,830 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 01:58:08,830 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 01:58:08,832 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 01:58:08,832 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 01:58:05" (1/3) ... [2022-07-21 01:58:08,833 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5840f553 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 01:58:08, skipping insertion in model container [2022-07-21 01:58:08,833 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:58:06" (2/3) ... [2022-07-21 01:58:08,834 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5840f553 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 01:58:08, skipping insertion in model container [2022-07-21 01:58:08,834 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 01:58:08" (3/3) ... [2022-07-21 01:58:08,835 INFO L111 eAbstractionObserver]: Analyzing ICFG loop1-1.c [2022-07-21 01:58:08,854 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 01:58:08,855 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-21 01:58:08,893 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 01:58:08,916 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@1c5c0bcd, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@201916e9 [2022-07-21 01:58:08,916 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-21 01:58:08,920 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 15 states have internal predecessors, (20), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-21 01:58:08,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-07-21 01:58:08,926 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 01:58:08,927 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 01:58:08,927 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 01:58:08,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 01:58:08,951 INFO L85 PathProgramCache]: Analyzing trace with hash 1019803906, now seen corresponding path program 1 times [2022-07-21 01:58:08,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 01:58:08,962 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [293494123] [2022-07-21 01:58:08,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 01:58:08,963 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 01:58:08,963 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 01:58:08,994 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) [2022-07-21 01:58:09,027 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-07-21 01:58:09,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 01:58:09,250 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 1 conjunts are in the unsatisfiable core [2022-07-21 01:58:09,254 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 01:58:09,274 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-21 01:58:09,275 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 01:58:09,275 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 01:58:09,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [293494123] [2022-07-21 01:58:09,276 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [293494123] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 01:58:09,276 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 01:58:09,277 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-21 01:58:09,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252346273] [2022-07-21 01:58:09,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 01:58:09,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-21 01:58:09,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 01:58:09,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-21 01:58:09,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-21 01:58:09,308 INFO L87 Difference]: Start difference. First operand has 19 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 15 states have internal predecessors, (20), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-21 01:58:09,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 01:58:09,322 INFO L93 Difference]: Finished difference Result 35 states and 46 transitions. [2022-07-21 01:58:09,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-21 01:58:09,324 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 17 [2022-07-21 01:58:09,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 01:58:09,329 INFO L225 Difference]: With dead ends: 35 [2022-07-21 01:58:09,329 INFO L226 Difference]: Without dead ends: 15 [2022-07-21 01:58:09,332 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-21 01:58:09,335 INFO L413 NwaCegarLoop]: 20 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, 20 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 [2022-07-21 01:58:09,336 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 01:58:09,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2022-07-21 01:58:09,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2022-07-21 01:58:09,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-21 01:58:09,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2022-07-21 01:58:09,364 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 17 [2022-07-21 01:58:09,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 01:58:09,364 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2022-07-21 01:58:09,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-21 01:58:09,365 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2022-07-21 01:58:09,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-07-21 01:58:09,366 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 01:58:09,366 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 01:58:09,378 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2022-07-21 01:58:09,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 01:58:09,572 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 01:58:09,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 01:58:09,573 INFO L85 PathProgramCache]: Analyzing trace with hash 1211444824, now seen corresponding path program 1 times [2022-07-21 01:58:09,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 01:58:09,574 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1025424702] [2022-07-21 01:58:09,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 01:58:09,574 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 01:58:09,574 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 01:58:09,576 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) [2022-07-21 01:58:09,579 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-07-21 01:58:10,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 01:58:10,638 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 16 conjunts are in the unsatisfiable core [2022-07-21 01:58:10,641 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 01:58:40,771 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse3 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode .cse3)) (.cse2 ((_ to_fp 11 53) c_currentRoundingMode |c_ULTIMATE.start_main_~x~0#1|))) (and (= |c_ULTIMATE.start_main_~exp~0#1| .cse0) (= |c_ULTIMATE.start_main_~term~0#1| .cse0) (= |c_ULTIMATE.start_main_~count~0#1| (_ bv1 32)) (= |c_ULTIMATE.start_main_~result~0#1| (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (_ bv2 32)) (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode (_ bv1 32)))) (fp.div c_currentRoundingMode .cse1 (fp.sub c_currentRoundingMode .cse1 |c_ULTIMATE.start_main_~x~0#1|))))) (fp.gt .cse2 (fp.neg .cse3)) (fp.lt .cse2 .cse3) (= c_currentRoundingMode roundNearestTiesToEven)))) is different from false [2022-07-21 01:58:57,334 WARN L833 $PredicateComparison]: unable to prove that (exists ((|ULTIMATE.start_main_~x~0#1| (_ FloatingPoint 8 24))) (let ((.cse2 ((_ to_fp 11 53) roundNearestTiesToEven |ULTIMATE.start_main_~x~0#1|)) (.cse1 ((_ to_fp 11 53) roundNearestTiesToEven 1.0))) (and (= (let ((.cse0 ((_ to_fp 8 24) roundNearestTiesToEven .cse1))) (fp.add roundNearestTiesToEven .cse0 (fp.mul roundNearestTiesToEven .cse0 (fp.div roundNearestTiesToEven |ULTIMATE.start_main_~x~0#1| ((_ to_fp_unsigned 8 24) roundNearestTiesToEven (_ bv1 32)))))) |c_ULTIMATE.start_main_~exp~0#1|) (fp.gt .cse2 (fp.neg .cse1)) (= |c_ULTIMATE.start_main_~result~0#1| (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (_ bv2 32)) (let ((.cse3 ((_ to_fp 8 24) roundNearestTiesToEven (_ bv1 32)))) (fp.div roundNearestTiesToEven .cse3 (fp.sub roundNearestTiesToEven .cse3 |ULTIMATE.start_main_~x~0#1|))))) (fp.lt .cse2 .cse1)))) is different from false [2022-07-21 01:58:59,391 WARN L855 $PredicateComparison]: unable to prove that (exists ((|ULTIMATE.start_main_~x~0#1| (_ FloatingPoint 8 24))) (let ((.cse2 ((_ to_fp 11 53) roundNearestTiesToEven |ULTIMATE.start_main_~x~0#1|)) (.cse1 ((_ to_fp 11 53) roundNearestTiesToEven 1.0))) (and (= (let ((.cse0 ((_ to_fp 8 24) roundNearestTiesToEven .cse1))) (fp.add roundNearestTiesToEven .cse0 (fp.mul roundNearestTiesToEven .cse0 (fp.div roundNearestTiesToEven |ULTIMATE.start_main_~x~0#1| ((_ to_fp_unsigned 8 24) roundNearestTiesToEven (_ bv1 32)))))) |c_ULTIMATE.start_main_~exp~0#1|) (fp.gt .cse2 (fp.neg .cse1)) (= |c_ULTIMATE.start_main_~result~0#1| (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (_ bv2 32)) (let ((.cse3 ((_ to_fp 8 24) roundNearestTiesToEven (_ bv1 32)))) (fp.div roundNearestTiesToEven .cse3 (fp.sub roundNearestTiesToEven .cse3 |ULTIMATE.start_main_~x~0#1|))))) (fp.lt .cse2 .cse1)))) is different from true [2022-07-21 02:00:06,495 WARN L833 $PredicateComparison]: unable to prove that (exists ((|ULTIMATE.start_main_~x~0#1| (_ FloatingPoint 8 24))) (let ((.cse4 ((_ to_fp 11 53) roundNearestTiesToEven |ULTIMATE.start_main_~x~0#1|)) (.cse3 ((_ to_fp 11 53) roundNearestTiesToEven 1.0))) (and (let ((.cse0 (fp.geq (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (_ bv2 32)) (let ((.cse1 ((_ to_fp 8 24) roundNearestTiesToEven (_ bv1 32)))) (fp.div roundNearestTiesToEven .cse1 (fp.sub roundNearestTiesToEven .cse1 |ULTIMATE.start_main_~x~0#1|)))) (let ((.cse2 ((_ to_fp 8 24) roundNearestTiesToEven .cse3))) (fp.add roundNearestTiesToEven .cse2 (fp.mul roundNearestTiesToEven .cse2 (fp.div roundNearestTiesToEven |ULTIMATE.start_main_~x~0#1| ((_ to_fp_unsigned 8 24) roundNearestTiesToEven (_ bv1 32))))))))) (or (and (= |c_ULTIMATE.start___VERIFIER_assert_~cond#1| (_ bv1 32)) .cse0) (and (= |c_ULTIMATE.start___VERIFIER_assert_~cond#1| (_ bv0 32)) (not .cse0)))) (fp.gt .cse4 (fp.neg .cse3)) (fp.lt .cse4 .cse3)))) is different from false [2022-07-21 02:00:08,560 WARN L855 $PredicateComparison]: unable to prove that (exists ((|ULTIMATE.start_main_~x~0#1| (_ FloatingPoint 8 24))) (let ((.cse4 ((_ to_fp 11 53) roundNearestTiesToEven |ULTIMATE.start_main_~x~0#1|)) (.cse3 ((_ to_fp 11 53) roundNearestTiesToEven 1.0))) (and (let ((.cse0 (fp.geq (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (_ bv2 32)) (let ((.cse1 ((_ to_fp 8 24) roundNearestTiesToEven (_ bv1 32)))) (fp.div roundNearestTiesToEven .cse1 (fp.sub roundNearestTiesToEven .cse1 |ULTIMATE.start_main_~x~0#1|)))) (let ((.cse2 ((_ to_fp 8 24) roundNearestTiesToEven .cse3))) (fp.add roundNearestTiesToEven .cse2 (fp.mul roundNearestTiesToEven .cse2 (fp.div roundNearestTiesToEven |ULTIMATE.start_main_~x~0#1| ((_ to_fp_unsigned 8 24) roundNearestTiesToEven (_ bv1 32))))))))) (or (and (= |c_ULTIMATE.start___VERIFIER_assert_~cond#1| (_ bv1 32)) .cse0) (and (= |c_ULTIMATE.start___VERIFIER_assert_~cond#1| (_ bv0 32)) (not .cse0)))) (fp.gt .cse4 (fp.neg .cse3)) (fp.lt .cse4 .cse3)))) is different from true [2022-07-21 02:00:25,264 WARN L833 $PredicateComparison]: unable to prove that (exists ((|ULTIMATE.start_main_~x~0#1| (_ FloatingPoint 8 24))) (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven |ULTIMATE.start_main_~x~0#1|)) (.cse1 ((_ to_fp 11 53) roundNearestTiesToEven 1.0))) (and (fp.gt .cse0 (fp.neg .cse1)) (fp.lt .cse0 .cse1) (not (fp.geq (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (_ bv2 32)) (let ((.cse2 ((_ to_fp 8 24) roundNearestTiesToEven (_ bv1 32)))) (fp.div roundNearestTiesToEven .cse2 (fp.sub roundNearestTiesToEven .cse2 |ULTIMATE.start_main_~x~0#1|)))) (let ((.cse3 ((_ to_fp 8 24) roundNearestTiesToEven .cse1))) (fp.add roundNearestTiesToEven .cse3 (fp.mul roundNearestTiesToEven .cse3 (fp.div roundNearestTiesToEven |ULTIMATE.start_main_~x~0#1| ((_ to_fp_unsigned 8 24) roundNearestTiesToEven (_ bv1 32))))))))))) is different from false [2022-07-21 02:00:27,314 WARN L855 $PredicateComparison]: unable to prove that (exists ((|ULTIMATE.start_main_~x~0#1| (_ FloatingPoint 8 24))) (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven |ULTIMATE.start_main_~x~0#1|)) (.cse1 ((_ to_fp 11 53) roundNearestTiesToEven 1.0))) (and (fp.gt .cse0 (fp.neg .cse1)) (fp.lt .cse0 .cse1) (not (fp.geq (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (_ bv2 32)) (let ((.cse2 ((_ to_fp 8 24) roundNearestTiesToEven (_ bv1 32)))) (fp.div roundNearestTiesToEven .cse2 (fp.sub roundNearestTiesToEven .cse2 |ULTIMATE.start_main_~x~0#1|)))) (let ((.cse3 ((_ to_fp 8 24) roundNearestTiesToEven .cse1))) (fp.add roundNearestTiesToEven .cse3 (fp.mul roundNearestTiesToEven .cse3 (fp.div roundNearestTiesToEven |ULTIMATE.start_main_~x~0#1| ((_ to_fp_unsigned 8 24) roundNearestTiesToEven (_ bv1 32))))))))))) is different from true [2022-07-21 02:00:27,315 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-21 02:00:27,315 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 02:00:27,315 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 02:00:27,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1025424702] [2022-07-21 02:00:27,315 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1025424702] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 02:00:27,315 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 02:00:27,315 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-21 02:00:27,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959275188] [2022-07-21 02:00:27,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 02:00:27,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-21 02:00:27,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 02:00:27,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-21 02:00:27,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=27, Unknown=7, NotChecked=52, Total=110 [2022-07-21 02:00:27,318 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand has 11 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 8 states have internal predecessors, (11), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-21 02:00:31,153 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-07-21 02:00:31,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 02:00:31,156 INFO L93 Difference]: Finished difference Result 21 states and 22 transitions. [2022-07-21 02:00:31,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-21 02:00:31,210 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 8 states have internal predecessors, (11), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 18 [2022-07-21 02:00:31,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 02:00:31,211 INFO L225 Difference]: With dead ends: 21 [2022-07-21 02:00:31,211 INFO L226 Difference]: Without dead ends: 17 [2022-07-21 02:00:31,213 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 16.4s TimeCoverageRelationStatistics Valid=29, Invalid=36, Unknown=7, NotChecked=60, Total=132 [2022-07-21 02:00:31,215 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 5 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 44 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-07-21 02:00:31,216 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 16 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 1 Unknown, 44 Unchecked, 3.6s Time] [2022-07-21 02:00:31,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-07-21 02:00:31,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2022-07-21 02:00:31,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 13 states have (on average 1.0769230769230769) internal successors, (14), 13 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-21 02:00:31,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2022-07-21 02:00:31,225 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 18 [2022-07-21 02:00:31,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 02:00:31,226 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2022-07-21 02:00:31,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 8 states have internal predecessors, (11), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-21 02:00:31,227 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2022-07-21 02:00:31,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-07-21 02:00:31,227 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 02:00:31,228 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 02:00:31,245 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-07-21 02:00:31,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 02:00:31,436 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 02:00:31,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 02:00:31,437 INFO L85 PathProgramCache]: Analyzing trace with hash 311013171, now seen corresponding path program 1 times [2022-07-21 02:00:31,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 02:00:31,437 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [168655548] [2022-07-21 02:00:31,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 02:00:31,437 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 02:00:31,438 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 02:00:31,440 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) [2022-07-21 02:00:31,443 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-07-21 02:00:35,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 02:00:35,623 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 19 conjunts are in the unsatisfiable core [2022-07-21 02:00:35,625 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 02:01:02,614 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse3 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode .cse3)) (.cse2 ((_ to_fp 11 53) c_currentRoundingMode |c_ULTIMATE.start_main_~x~0#1|))) (and (= |c_ULTIMATE.start_main_~exp~0#1| .cse0) (= |c_ULTIMATE.start_main_~term~0#1| .cse0) (= |c_ULTIMATE.start_main_~count~0#1| (_ bv1 32)) (= |c_ULTIMATE.start_main_~result~0#1| (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (_ bv2 32)) (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode (_ bv1 32)))) (fp.div c_currentRoundingMode .cse1 (fp.sub c_currentRoundingMode .cse1 |c_ULTIMATE.start_main_~x~0#1|))))) (fp.gt .cse2 (fp.neg .cse3)) (fp.lt .cse2 .cse3) (= c_currentRoundingMode roundNearestTiesToEven)))) is different from false [2022-07-21 02:01:32,250 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse3 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode .cse3)) (.cse2 ((_ to_fp 11 53) c_currentRoundingMode |c_ULTIMATE.start_main_~x~0#1|))) (and (= |c_ULTIMATE.start_main_~exp~0#1| (fp.add c_currentRoundingMode .cse0 |c_ULTIMATE.start_main_~term~0#1|)) (= |c_ULTIMATE.start_main_~result~0#1| (fp.mul c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (_ bv2 32)) (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode (_ bv1 32)))) (fp.div c_currentRoundingMode .cse1 (fp.sub c_currentRoundingMode .cse1 |c_ULTIMATE.start_main_~x~0#1|))))) (fp.gt .cse2 (fp.neg .cse3)) (= (_ bv2 32) |c_ULTIMATE.start_main_~count~0#1|) (= |c_ULTIMATE.start_main_~term~0#1| (fp.mul c_currentRoundingMode .cse0 (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~x~0#1| ((_ to_fp_unsigned 8 24) c_currentRoundingMode (_ bv1 32))))) (fp.lt .cse2 .cse3) (= c_currentRoundingMode roundNearestTiesToEven)))) is different from false [2022-07-21 02:02:15,873 WARN L833 $PredicateComparison]: unable to prove that (exists ((|ULTIMATE.start_main_~x~0#1| (_ FloatingPoint 8 24))) (let ((.cse3 ((_ to_fp 11 53) roundNearestTiesToEven |ULTIMATE.start_main_~x~0#1|)) (.cse2 ((_ to_fp 11 53) roundNearestTiesToEven 1.0))) (and (= (let ((.cse0 ((_ to_fp 8 24) roundNearestTiesToEven .cse2))) (let ((.cse1 (fp.mul roundNearestTiesToEven .cse0 (fp.div roundNearestTiesToEven |ULTIMATE.start_main_~x~0#1| ((_ to_fp_unsigned 8 24) roundNearestTiesToEven (_ bv1 32)))))) (fp.add roundNearestTiesToEven (fp.add roundNearestTiesToEven .cse0 .cse1) (fp.mul roundNearestTiesToEven .cse1 (fp.div roundNearestTiesToEven |ULTIMATE.start_main_~x~0#1| ((_ to_fp_unsigned 8 24) roundNearestTiesToEven (_ bv2 32))))))) |c_ULTIMATE.start_main_~exp~0#1|) (fp.gt .cse3 (fp.neg .cse2)) (= |c_ULTIMATE.start_main_~result~0#1| (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (_ bv2 32)) (let ((.cse4 ((_ to_fp 8 24) roundNearestTiesToEven (_ bv1 32)))) (fp.div roundNearestTiesToEven .cse4 (fp.sub roundNearestTiesToEven .cse4 |ULTIMATE.start_main_~x~0#1|))))) (fp.lt .cse3 .cse2)))) is different from false [2022-07-21 02:02:17,940 WARN L855 $PredicateComparison]: unable to prove that (exists ((|ULTIMATE.start_main_~x~0#1| (_ FloatingPoint 8 24))) (let ((.cse3 ((_ to_fp 11 53) roundNearestTiesToEven |ULTIMATE.start_main_~x~0#1|)) (.cse2 ((_ to_fp 11 53) roundNearestTiesToEven 1.0))) (and (= (let ((.cse0 ((_ to_fp 8 24) roundNearestTiesToEven .cse2))) (let ((.cse1 (fp.mul roundNearestTiesToEven .cse0 (fp.div roundNearestTiesToEven |ULTIMATE.start_main_~x~0#1| ((_ to_fp_unsigned 8 24) roundNearestTiesToEven (_ bv1 32)))))) (fp.add roundNearestTiesToEven (fp.add roundNearestTiesToEven .cse0 .cse1) (fp.mul roundNearestTiesToEven .cse1 (fp.div roundNearestTiesToEven |ULTIMATE.start_main_~x~0#1| ((_ to_fp_unsigned 8 24) roundNearestTiesToEven (_ bv2 32))))))) |c_ULTIMATE.start_main_~exp~0#1|) (fp.gt .cse3 (fp.neg .cse2)) (= |c_ULTIMATE.start_main_~result~0#1| (fp.mul roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (_ bv2 32)) (let ((.cse4 ((_ to_fp 8 24) roundNearestTiesToEven (_ bv1 32)))) (fp.div roundNearestTiesToEven .cse4 (fp.sub roundNearestTiesToEven .cse4 |ULTIMATE.start_main_~x~0#1|))))) (fp.lt .cse3 .cse2)))) is different from true