./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-newlib/float_req_bl_1072d.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8be7027f Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/float-newlib/float_req_bl_1072d.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 --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 617ff69384da5814b2b527d10c4fa0e27490c5a4838f31ba8705b37c822dda78 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dk.perfect-tracechecks-8be7027-m [2024-11-11 18:21:28,504 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-11 18:21:28,550 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-11 18:21:28,554 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-11 18:21:28,555 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-11 18:21:28,573 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-11 18:21:28,573 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-11 18:21:28,574 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-11 18:21:28,574 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-11 18:21:28,574 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-11 18:21:28,575 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-11 18:21:28,575 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-11 18:21:28,575 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-11 18:21:28,576 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-11 18:21:28,576 INFO L153 SettingsManager]: * Use SBE=true [2024-11-11 18:21:28,576 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-11 18:21:28,577 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-11 18:21:28,577 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-11 18:21:28,578 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-11 18:21:28,578 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-11 18:21:28,578 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-11 18:21:28,579 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-11 18:21:28,579 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-11 18:21:28,579 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-11 18:21:28,580 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-11 18:21:28,580 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-11 18:21:28,580 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-11 18:21:28,581 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-11 18:21:28,581 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-11 18:21:28,581 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-11 18:21:28,581 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-11 18:21:28,582 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-11 18:21:28,582 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-11 18:21:28,582 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-11 18:21:28,583 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-11 18:21:28,583 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-11 18:21:28,583 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-11 18:21:28,583 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-11 18:21:28,584 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-11 18:21:28,584 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-11 18:21:28,584 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-11 18:21:28,587 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-11 18:21:28,587 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 617ff69384da5814b2b527d10c4fa0e27490c5a4838f31ba8705b37c822dda78 [2024-11-11 18:21:28,807 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-11 18:21:28,833 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-11 18:21:28,838 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-11 18:21:28,839 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-11 18:21:28,840 INFO L274 PluginConnector]: CDTParser initialized [2024-11-11 18:21:28,842 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/float_req_bl_1072d.c [2024-11-11 18:21:30,325 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-11 18:21:30,506 INFO L384 CDTParser]: Found 1 translation units. [2024-11-11 18:21:30,507 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/float_req_bl_1072d.c [2024-11-11 18:21:30,514 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/97edf8053/e2decb2bee334e419ed124127607e6af/FLAG5312f8cac [2024-11-11 18:21:30,531 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/97edf8053/e2decb2bee334e419ed124127607e6af [2024-11-11 18:21:30,534 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-11 18:21:30,535 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-11 18:21:30,541 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-11 18:21:30,541 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-11 18:21:30,547 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-11 18:21:30,548 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.11 06:21:30" (1/1) ... [2024-11-11 18:21:30,549 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7974a43a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:21:30, skipping insertion in model container [2024-11-11 18:21:30,549 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.11 06:21:30" (1/1) ... [2024-11-11 18:21:30,570 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-11 18:21:30,803 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/float_req_bl_1072d.c[1573,1586] [2024-11-11 18:21:30,806 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-11 18:21:30,823 INFO L200 MainTranslator]: Completed pre-run [2024-11-11 18:21:30,847 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/float_req_bl_1072d.c[1573,1586] [2024-11-11 18:21:30,848 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-11 18:21:30,866 INFO L204 MainTranslator]: Completed translation [2024-11-11 18:21:30,866 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:21:30 WrapperNode [2024-11-11 18:21:30,867 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-11 18:21:30,868 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-11 18:21:30,869 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-11 18:21:30,869 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-11 18:21:30,876 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:21:30" (1/1) ... [2024-11-11 18:21:30,882 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:21:30" (1/1) ... [2024-11-11 18:21:30,901 INFO L138 Inliner]: procedures = 16, calls = 25, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 123 [2024-11-11 18:21:30,907 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-11 18:21:30,908 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-11 18:21:30,908 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-11 18:21:30,908 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-11 18:21:30,918 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:21:30" (1/1) ... [2024-11-11 18:21:30,918 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:21:30" (1/1) ... [2024-11-11 18:21:30,920 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:21:30" (1/1) ... [2024-11-11 18:21:30,943 INFO L175 MemorySlicer]: Split 10 memory accesses to 5 slices as follows [2, 2, 2, 2, 2]. 20 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0]. The 4 writes are split as follows [0, 1, 1, 1, 1]. [2024-11-11 18:21:30,946 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:21:30" (1/1) ... [2024-11-11 18:21:30,947 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:21:30" (1/1) ... [2024-11-11 18:21:30,957 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:21:30" (1/1) ... [2024-11-11 18:21:30,964 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:21:30" (1/1) ... [2024-11-11 18:21:30,969 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:21:30" (1/1) ... [2024-11-11 18:21:30,970 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:21:30" (1/1) ... [2024-11-11 18:21:30,977 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-11 18:21:30,978 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-11 18:21:30,978 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-11 18:21:30,978 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-11 18:21:30,979 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:21:30" (1/1) ... [2024-11-11 18:21:30,990 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-11 18:21:31,002 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 18:21:31,025 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-11 18:21:31,035 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-11 18:21:31,077 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-11 18:21:31,077 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-11 18:21:31,077 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-11 18:21:31,077 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-11 18:21:31,078 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-11 18:21:31,078 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-11 18:21:31,078 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-11 18:21:31,078 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#0 [2024-11-11 18:21:31,078 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#1 [2024-11-11 18:21:31,078 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#2 [2024-11-11 18:21:31,078 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#3 [2024-11-11 18:21:31,078 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#4 [2024-11-11 18:21:31,078 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-11 18:21:31,078 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-11 18:21:31,079 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-11 18:21:31,079 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-11 18:21:31,079 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-11 18:21:31,079 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#0 [2024-11-11 18:21:31,079 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#1 [2024-11-11 18:21:31,083 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#2 [2024-11-11 18:21:31,083 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#3 [2024-11-11 18:21:31,083 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#4 [2024-11-11 18:21:31,084 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-11 18:21:31,084 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-11 18:21:31,084 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-11 18:21:31,084 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-11 18:21:31,084 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-11 18:21:31,084 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-11 18:21:31,084 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-11 18:21:31,084 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-11 18:21:31,182 INFO L238 CfgBuilder]: Building ICFG [2024-11-11 18:21:31,184 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-11 18:21:31,393 INFO L? ?]: Removed 21 outVars from TransFormulas that were not future-live. [2024-11-11 18:21:31,394 INFO L287 CfgBuilder]: Performing block encoding [2024-11-11 18:21:31,413 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-11 18:21:31,414 INFO L316 CfgBuilder]: Removed 8 assume(true) statements. [2024-11-11 18:21:31,414 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.11 06:21:31 BoogieIcfgContainer [2024-11-11 18:21:31,414 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-11 18:21:31,416 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-11 18:21:31,416 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-11 18:21:31,420 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-11 18:21:31,420 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.11 06:21:30" (1/3) ... [2024-11-11 18:21:31,421 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37fe8516 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.11 06:21:31, skipping insertion in model container [2024-11-11 18:21:31,421 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:21:30" (2/3) ... [2024-11-11 18:21:31,421 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37fe8516 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.11 06:21:31, skipping insertion in model container [2024-11-11 18:21:31,422 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.11 06:21:31" (3/3) ... [2024-11-11 18:21:31,423 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1072d.c [2024-11-11 18:21:31,439 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-11 18:21:31,440 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-11 18:21:31,490 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-11 18:21:31,496 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@65135ab0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-11 18:21:31,496 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-11 18:21:31,500 INFO L276 IsEmpty]: Start isEmpty. Operand has 38 states, 36 states have (on average 1.5833333333333333) internal successors, (57), 37 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 18:21:31,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-11 18:21:31,505 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 18:21:31,506 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 18:21:31,506 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 18:21:31,511 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 18:21:31,512 INFO L85 PathProgramCache]: Analyzing trace with hash -319000441, now seen corresponding path program 1 times [2024-11-11 18:21:31,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 18:21:31,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238850299] [2024-11-11 18:21:31,521 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 18:21:31,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 18:21:31,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 18:21:31,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 18:21:31,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 18:21:31,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238850299] [2024-11-11 18:21:31,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238850299] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 18:21:31,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-11 18:21:31,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-11 18:21:31,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941892054] [2024-11-11 18:21:31,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 18:21:31,678 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-11 18:21:31,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 18:21:31,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-11 18:21:31,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-11 18:21:31,700 INFO L87 Difference]: Start difference. First operand has 38 states, 36 states have (on average 1.5833333333333333) internal successors, (57), 37 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 18:21:31,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 18:21:31,713 INFO L93 Difference]: Finished difference Result 74 states and 112 transitions. [2024-11-11 18:21:31,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-11 18:21:31,716 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2024-11-11 18:21:31,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 18:21:31,721 INFO L225 Difference]: With dead ends: 74 [2024-11-11 18:21:31,722 INFO L226 Difference]: Without dead ends: 35 [2024-11-11 18:21:31,724 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-11 18:21:31,727 INFO L435 NwaCegarLoop]: 48 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, 48 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 [2024-11-11 18:21:31,732 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-11 18:21:31,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2024-11-11 18:21:31,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2024-11-11 18:21:31,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 34 states have (on average 1.3235294117647058) internal successors, (45), 34 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 18:21:31,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 45 transitions. [2024-11-11 18:21:31,766 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 45 transitions. Word has length 12 [2024-11-11 18:21:31,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 18:21:31,767 INFO L471 AbstractCegarLoop]: Abstraction has 35 states and 45 transitions. [2024-11-11 18:21:31,767 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 18:21:31,768 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 45 transitions. [2024-11-11 18:21:31,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-11 18:21:31,768 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 18:21:31,769 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 18:21:31,769 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-11 18:21:31,769 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 18:21:31,771 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 18:21:31,771 INFO L85 PathProgramCache]: Analyzing trace with hash 1718679050, now seen corresponding path program 1 times [2024-11-11 18:21:31,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 18:21:31,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792202727] [2024-11-11 18:21:31,771 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 18:21:31,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 18:21:31,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 18:21:31,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 18:21:31,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 18:21:31,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792202727] [2024-11-11 18:21:31,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792202727] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 18:21:31,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-11 18:21:31,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-11 18:21:31,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80752538] [2024-11-11 18:21:31,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 18:21:31,952 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-11 18:21:31,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 18:21:31,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-11 18:21:31,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-11 18:21:31,956 INFO L87 Difference]: Start difference. First operand 35 states and 45 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 18:21:32,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 18:21:32,002 INFO L93 Difference]: Finished difference Result 60 states and 78 transitions. [2024-11-11 18:21:32,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-11 18:21:32,002 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2024-11-11 18:21:32,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 18:21:32,003 INFO L225 Difference]: With dead ends: 60 [2024-11-11 18:21:32,003 INFO L226 Difference]: Without dead ends: 38 [2024-11-11 18:21:32,003 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-11 18:21:32,004 INFO L435 NwaCegarLoop]: 42 mSDtfsCounter, 1 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-11 18:21:32,004 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 113 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-11 18:21:32,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2024-11-11 18:21:32,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2024-11-11 18:21:32,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 37 states have (on average 1.2972972972972974) internal successors, (48), 37 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 18:21:32,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 48 transitions. [2024-11-11 18:21:32,009 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 48 transitions. Word has length 13 [2024-11-11 18:21:32,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 18:21:32,009 INFO L471 AbstractCegarLoop]: Abstraction has 38 states and 48 transitions. [2024-11-11 18:21:32,009 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 18:21:32,009 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 48 transitions. [2024-11-11 18:21:32,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-11 18:21:32,010 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 18:21:32,010 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 18:21:32,010 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-11 18:21:32,014 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 18:21:32,015 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 18:21:32,015 INFO L85 PathProgramCache]: Analyzing trace with hash -537311959, now seen corresponding path program 1 times [2024-11-11 18:21:32,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 18:21:32,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603479353] [2024-11-11 18:21:32,016 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 18:21:32,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 18:21:32,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 18:21:32,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 18:21:32,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-11 18:21:32,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603479353] [2024-11-11 18:21:32,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603479353] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 18:21:32,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-11 18:21:32,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-11 18:21:32,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931823247] [2024-11-11 18:21:32,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 18:21:32,136 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-11 18:21:32,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-11 18:21:32,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-11 18:21:32,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-11 18:21:32,140 INFO L87 Difference]: Start difference. First operand 38 states and 48 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 18:21:32,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 18:21:32,190 INFO L93 Difference]: Finished difference Result 49 states and 59 transitions. [2024-11-11 18:21:32,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-11 18:21:32,191 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2024-11-11 18:21:32,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 18:21:32,191 INFO L225 Difference]: With dead ends: 49 [2024-11-11 18:21:32,192 INFO L226 Difference]: Without dead ends: 40 [2024-11-11 18:21:32,192 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-11 18:21:32,193 INFO L435 NwaCegarLoop]: 38 mSDtfsCounter, 19 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-11 18:21:32,193 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 90 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-11 18:21:32,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2024-11-11 18:21:32,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 38. [2024-11-11 18:21:32,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 37 states have (on average 1.2702702702702702) internal successors, (47), 37 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 18:21:32,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 47 transitions. [2024-11-11 18:21:32,199 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 47 transitions. Word has length 14 [2024-11-11 18:21:32,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 18:21:32,200 INFO L471 AbstractCegarLoop]: Abstraction has 38 states and 47 transitions. [2024-11-11 18:21:32,200 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 18:21:32,200 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 47 transitions. [2024-11-11 18:21:32,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-11 18:21:32,202 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 18:21:32,202 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 18:21:32,202 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-11 18:21:32,202 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 18:21:32,203 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 18:21:32,203 INFO L85 PathProgramCache]: Analyzing trace with hash 578010148, now seen corresponding path program 1 times [2024-11-11 18:21:32,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-11 18:21:32,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232672603] [2024-11-11 18:21:32,204 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 18:21:32,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-11 18:21:32,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-11 18:21:32,237 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-11 18:21:32,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-11 18:21:32,294 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-11 18:21:32,295 INFO L339 BasicCegarLoop]: Counterexample is feasible [2024-11-11 18:21:32,296 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-11 18:21:32,297 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-11 18:21:32,299 INFO L421 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-11-11 18:21:32,318 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-11 18:21:32,323 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.11 06:21:32 BoogieIcfgContainer [2024-11-11 18:21:32,323 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-11 18:21:32,324 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-11 18:21:32,324 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-11 18:21:32,324 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-11 18:21:32,325 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.11 06:21:31" (3/4) ... [2024-11-11 18:21:32,328 INFO L145 WitnessPrinter]: No result that supports witness generation found [2024-11-11 18:21:32,329 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-11 18:21:32,329 INFO L158 Benchmark]: Toolchain (without parser) took 1794.39ms. Allocated memory was 142.6MB in the beginning and 207.6MB in the end (delta: 65.0MB). Free memory was 71.6MB in the beginning and 160.2MB in the end (delta: -88.6MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-11 18:21:32,330 INFO L158 Benchmark]: CDTParser took 0.47ms. Allocated memory is still 142.6MB. Free memory is still 93.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-11 18:21:32,331 INFO L158 Benchmark]: CACSL2BoogieTranslator took 326.30ms. Allocated memory was 142.6MB in the beginning and 207.6MB in the end (delta: 65.0MB). Free memory was 71.4MB in the beginning and 178.2MB in the end (delta: -106.7MB). Peak memory consumption was 16.4MB. Max. memory is 16.1GB. [2024-11-11 18:21:32,331 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.20ms. Allocated memory is still 207.6MB. Free memory was 178.2MB in the beginning and 176.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-11 18:21:32,331 INFO L158 Benchmark]: Boogie Preprocessor took 69.28ms. Allocated memory is still 207.6MB. Free memory was 176.1MB in the beginning and 174.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-11 18:21:32,331 INFO L158 Benchmark]: RCFGBuilder took 436.56ms. Allocated memory is still 207.6MB. Free memory was 174.0MB in the beginning and 156.2MB in the end (delta: 17.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-11 18:21:32,332 INFO L158 Benchmark]: TraceAbstraction took 907.10ms. Allocated memory is still 207.6MB. Free memory was 155.2MB in the beginning and 161.3MB in the end (delta: -6.1MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-11 18:21:32,333 INFO L158 Benchmark]: Witness Printer took 4.89ms. Allocated memory is still 207.6MB. Free memory was 161.3MB in the beginning and 160.2MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-11 18:21:32,334 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.47ms. Allocated memory is still 142.6MB. Free memory is still 93.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 326.30ms. Allocated memory was 142.6MB in the beginning and 207.6MB in the end (delta: 65.0MB). Free memory was 71.4MB in the beginning and 178.2MB in the end (delta: -106.7MB). Peak memory consumption was 16.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 39.20ms. Allocated memory is still 207.6MB. Free memory was 178.2MB in the beginning and 176.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 69.28ms. Allocated memory is still 207.6MB. Free memory was 176.1MB in the beginning and 174.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 436.56ms. Allocated memory is still 207.6MB. Free memory was 174.0MB in the beginning and 156.2MB in the end (delta: 17.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 907.10ms. Allocated memory is still 207.6MB. Free memory was 155.2MB in the beginning and 161.3MB in the end (delta: -6.1MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 4.89ms. Allocated memory is still 207.6MB. Free memory was 161.3MB in the beginning and 160.2MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 69]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 68, overapproximation of someUnaryFLOAToperation at line 64. Possible FailurePath: [L64] float x = -0.0f; [L65] CALL, EXPR trunc_float(x) [L15] __int32_t signbit, w, exponent_less_127; VAL [x=6434062345] [L17] ieee_float_shape_type gf_u; [L18] gf_u.value = (x) [L19] EXPR gf_u.word [L19] (w) = gf_u.word [L21] signbit = w & 0x80000000 VAL [signbit=0, w=2139095040, x=6434062345] [L22] EXPR w & 0x7f800000 VAL [signbit=0, w=2139095040, x=6434062345] [L22] exponent_less_127 = ((w & 0x7f800000) >> 23) - 127 [L23] COND FALSE !(exponent_less_127 < 23) [L39] COND FALSE !(exponent_less_127 == 255) VAL [signbit=0, w=2139095040, x=6434062345] [L42] return x; VAL [\result=6434062345, signbit=0, w=2139095040] [L65] RET, EXPR trunc_float(x) [L65] float res = trunc_float(x); [L68] EXPR res == -0.0f && __signbit_float(res) == 1 VAL [res=6434062345] [L68] EXPR res == -0.0f && __signbit_float(res) == 1 [L68] COND TRUE !(res == -0.0f && __signbit_float(res) == 1) [L69] reach_error() VAL [res=6434062345] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 38 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.8s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 20 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 20 mSDsluCounter, 251 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 123 mSDsCounter, 4 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 45 IncrementalHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4 mSolverCounterUnsat, 128 mSDtfsCounter, 45 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=38occurred in iteration=0, InterpolantAutomatonStates: 10, 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, 3 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 54 NumberOfCodeBlocks, 54 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 36 ConstructedInterpolants, 0 QuantifiedInterpolants, 52 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2024-11-11 18:21:32,359 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (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: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/float-newlib/float_req_bl_1072d.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 --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 617ff69384da5814b2b527d10c4fa0e27490c5a4838f31ba8705b37c822dda78 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dk.perfect-tracechecks-8be7027-m [2024-11-11 18:21:34,536 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-11 18:21:34,615 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2024-11-11 18:21:34,624 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-11 18:21:34,625 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-11 18:21:34,663 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-11 18:21:34,667 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-11 18:21:34,668 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-11 18:21:34,668 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-11 18:21:34,668 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-11 18:21:34,669 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-11 18:21:34,669 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-11 18:21:34,669 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-11 18:21:34,670 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-11 18:21:34,670 INFO L153 SettingsManager]: * Use SBE=true [2024-11-11 18:21:34,670 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-11 18:21:34,670 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-11 18:21:34,671 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-11 18:21:34,674 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-11 18:21:34,674 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-11 18:21:34,675 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-11 18:21:34,675 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-11 18:21:34,675 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-11 18:21:34,675 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-11 18:21:34,676 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-11 18:21:34,676 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-11 18:21:34,676 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-11 18:21:34,676 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-11 18:21:34,677 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-11 18:21:34,677 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-11 18:21:34,677 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-11 18:21:34,677 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-11 18:21:34,678 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-11 18:21:34,678 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-11 18:21:34,681 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-11 18:21:34,681 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-11 18:21:34,682 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-11 18:21:34,683 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-11 18:21:34,683 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-11 18:21:34,683 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-11 18:21:34,683 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-11 18:21:34,684 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-11 18:21:34,684 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-11 18:21:34,684 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-11 18:21:34,684 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 617ff69384da5814b2b527d10c4fa0e27490c5a4838f31ba8705b37c822dda78 [2024-11-11 18:21:34,991 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-11 18:21:35,012 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-11 18:21:35,016 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-11 18:21:35,017 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-11 18:21:35,021 INFO L274 PluginConnector]: CDTParser initialized [2024-11-11 18:21:35,022 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/float_req_bl_1072d.c [2024-11-11 18:21:36,649 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-11 18:21:36,801 INFO L384 CDTParser]: Found 1 translation units. [2024-11-11 18:21:36,804 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/float_req_bl_1072d.c [2024-11-11 18:21:36,810 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3d31fa1c7/1768e4154c924398801a4d30fdd4b8e4/FLAG1c0a0d5e1 [2024-11-11 18:21:37,214 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3d31fa1c7/1768e4154c924398801a4d30fdd4b8e4 [2024-11-11 18:21:37,217 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-11 18:21:37,220 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-11 18:21:37,221 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-11 18:21:37,221 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-11 18:21:37,226 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-11 18:21:37,227 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.11 06:21:37" (1/1) ... [2024-11-11 18:21:37,227 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ac1457a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:21:37, skipping insertion in model container [2024-11-11 18:21:37,228 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.11 06:21:37" (1/1) ... [2024-11-11 18:21:37,243 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-11 18:21:37,430 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/float_req_bl_1072d.c[1573,1586] [2024-11-11 18:21:37,436 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-11 18:21:37,451 INFO L200 MainTranslator]: Completed pre-run [2024-11-11 18:21:37,480 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/float_req_bl_1072d.c[1573,1586] [2024-11-11 18:21:37,481 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-11 18:21:37,504 INFO L204 MainTranslator]: Completed translation [2024-11-11 18:21:37,504 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:21:37 WrapperNode [2024-11-11 18:21:37,504 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-11 18:21:37,505 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-11 18:21:37,506 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-11 18:21:37,506 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-11 18:21:37,511 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:21:37" (1/1) ... [2024-11-11 18:21:37,525 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:21:37" (1/1) ... [2024-11-11 18:21:37,547 INFO L138 Inliner]: procedures = 19, calls = 25, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 93 [2024-11-11 18:21:37,547 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-11 18:21:37,548 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-11 18:21:37,549 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-11 18:21:37,549 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-11 18:21:37,557 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:21:37" (1/1) ... [2024-11-11 18:21:37,557 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:21:37" (1/1) ... [2024-11-11 18:21:37,561 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:21:37" (1/1) ... [2024-11-11 18:21:37,577 INFO L175 MemorySlicer]: Split 10 memory accesses to 5 slices as follows [2, 2, 2, 2, 2]. 20 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0]. The 4 writes are split as follows [0, 1, 1, 1, 1]. [2024-11-11 18:21:37,578 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:21:37" (1/1) ... [2024-11-11 18:21:37,578 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:21:37" (1/1) ... [2024-11-11 18:21:37,590 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:21:37" (1/1) ... [2024-11-11 18:21:37,597 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:21:37" (1/1) ... [2024-11-11 18:21:37,602 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:21:37" (1/1) ... [2024-11-11 18:21:37,603 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:21:37" (1/1) ... [2024-11-11 18:21:37,610 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-11 18:21:37,615 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-11 18:21:37,615 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-11 18:21:37,615 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-11 18:21:37,616 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:21:37" (1/1) ... [2024-11-11 18:21:37,622 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-11 18:21:37,632 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-11 18:21:37,649 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-11 18:21:37,652 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-11 18:21:37,693 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-11 18:21:37,693 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-11 18:21:37,693 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-11-11 18:21:37,693 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2024-11-11 18:21:37,694 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#3 [2024-11-11 18:21:37,694 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#4 [2024-11-11 18:21:37,694 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-11 18:21:37,694 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#0 [2024-11-11 18:21:37,695 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#1 [2024-11-11 18:21:37,696 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#2 [2024-11-11 18:21:37,696 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#3 [2024-11-11 18:21:37,696 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#4 [2024-11-11 18:21:37,696 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2024-11-11 18:21:37,696 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2024-11-11 18:21:37,696 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2024-11-11 18:21:37,696 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#3 [2024-11-11 18:21:37,696 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#4 [2024-11-11 18:21:37,696 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-11 18:21:37,697 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-11 18:21:37,697 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#0 [2024-11-11 18:21:37,697 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#1 [2024-11-11 18:21:37,697 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#2 [2024-11-11 18:21:37,697 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#3 [2024-11-11 18:21:37,697 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#4 [2024-11-11 18:21:37,697 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2024-11-11 18:21:37,697 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2024-11-11 18:21:37,697 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2024-11-11 18:21:37,697 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#3 [2024-11-11 18:21:37,697 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#4 [2024-11-11 18:21:37,697 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-11 18:21:37,813 INFO L238 CfgBuilder]: Building ICFG [2024-11-11 18:21:37,815 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-11 18:21:38,024 INFO L? ?]: Removed 16 outVars from TransFormulas that were not future-live. [2024-11-11 18:21:38,025 INFO L287 CfgBuilder]: Performing block encoding [2024-11-11 18:21:38,035 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-11 18:21:38,035 INFO L316 CfgBuilder]: Removed 8 assume(true) statements. [2024-11-11 18:21:38,035 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.11 06:21:38 BoogieIcfgContainer [2024-11-11 18:21:38,036 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-11 18:21:38,038 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-11 18:21:38,038 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-11 18:21:38,041 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-11 18:21:38,041 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.11 06:21:37" (1/3) ... [2024-11-11 18:21:38,042 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26e934af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.11 06:21:38, skipping insertion in model container [2024-11-11 18:21:38,042 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.11 06:21:37" (2/3) ... [2024-11-11 18:21:38,042 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26e934af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.11 06:21:38, skipping insertion in model container [2024-11-11 18:21:38,042 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.11 06:21:38" (3/3) ... [2024-11-11 18:21:38,043 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1072d.c [2024-11-11 18:21:38,059 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-11 18:21:38,059 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-11 18:21:38,118 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-11 18:21:38,124 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@fbe5f4c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-11 18:21:38,124 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-11 18:21:38,127 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 23 states have (on average 1.608695652173913) internal successors, (37), 24 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 18:21:38,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-11 18:21:38,131 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 18:21:38,132 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 18:21:38,132 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 18:21:38,136 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 18:21:38,136 INFO L85 PathProgramCache]: Analyzing trace with hash 1945115165, now seen corresponding path program 1 times [2024-11-11 18:21:38,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-11 18:21:38,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [962555686] [2024-11-11 18:21:38,148 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 18:21:38,148 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-11 18:21:38,148 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-11 18:21:38,153 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-11 18:21:38,155 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2024-11-11 18:21:38,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 18:21:38,224 INFO L256 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-11 18:21:38,228 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 18:21:38,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 18:21:38,241 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-11 18:21:38,241 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-11 18:21:38,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [962555686] [2024-11-11 18:21:38,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [962555686] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 18:21:38,242 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-11 18:21:38,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-11 18:21:38,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190252990] [2024-11-11 18:21:38,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 18:21:38,246 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-11 18:21:38,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-11 18:21:38,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-11 18:21:38,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-11 18:21:38,268 INFO L87 Difference]: Start difference. First operand has 25 states, 23 states have (on average 1.608695652173913) internal successors, (37), 24 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 18:21:38,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 18:21:38,284 INFO L93 Difference]: Finished difference Result 48 states and 72 transitions. [2024-11-11 18:21:38,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-11 18:21:38,289 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2024-11-11 18:21:38,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 18:21:38,300 INFO L225 Difference]: With dead ends: 48 [2024-11-11 18:21:38,300 INFO L226 Difference]: Without dead ends: 22 [2024-11-11 18:21:38,305 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-11 18:21:38,312 INFO L435 NwaCegarLoop]: 28 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, 28 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 [2024-11-11 18:21:38,314 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-11 18:21:38,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2024-11-11 18:21:38,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2024-11-11 18:21:38,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.1904761904761905) internal successors, (25), 21 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 18:21:38,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2024-11-11 18:21:38,369 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 10 [2024-11-11 18:21:38,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 18:21:38,370 INFO L471 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2024-11-11 18:21:38,370 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 18:21:38,370 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2024-11-11 18:21:38,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-11 18:21:38,373 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 18:21:38,373 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 18:21:38,384 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2024-11-11 18:21:38,573 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-11 18:21:38,574 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 18:21:38,575 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 18:21:38,575 INFO L85 PathProgramCache]: Analyzing trace with hash -390192032, now seen corresponding path program 1 times [2024-11-11 18:21:38,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-11 18:21:38,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [497584437] [2024-11-11 18:21:38,576 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 18:21:38,576 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-11 18:21:38,576 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-11 18:21:38,578 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-11 18:21:38,579 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2024-11-11 18:21:38,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 18:21:38,648 INFO L256 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-11 18:21:38,650 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 18:21:38,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 18:21:38,821 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-11 18:21:38,821 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-11 18:21:38,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [497584437] [2024-11-11 18:21:38,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [497584437] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 18:21:38,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-11 18:21:38,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-11 18:21:38,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872039935] [2024-11-11 18:21:38,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 18:21:38,823 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-11 18:21:38,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-11 18:21:38,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-11 18:21:38,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-11 18:21:38,828 INFO L87 Difference]: Start difference. First operand 22 states and 25 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 18:21:38,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 18:21:38,898 INFO L93 Difference]: Finished difference Result 32 states and 35 transitions. [2024-11-11 18:21:38,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-11 18:21:38,898 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2024-11-11 18:21:38,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 18:21:38,899 INFO L225 Difference]: With dead ends: 32 [2024-11-11 18:21:38,899 INFO L226 Difference]: Without dead ends: 19 [2024-11-11 18:21:38,900 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-11 18:21:38,901 INFO L435 NwaCegarLoop]: 15 mSDtfsCounter, 12 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-11 18:21:38,901 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 47 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-11 18:21:38,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2024-11-11 18:21:38,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2024-11-11 18:21:38,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.0555555555555556) internal successors, (19), 18 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 18:21:38,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2024-11-11 18:21:38,904 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 11 [2024-11-11 18:21:38,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 18:21:38,904 INFO L471 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2024-11-11 18:21:38,904 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 18:21:38,904 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2024-11-11 18:21:38,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-11 18:21:38,904 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 18:21:38,904 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 18:21:38,909 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2024-11-11 18:21:39,105 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-11 18:21:39,105 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 18:21:39,106 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 18:21:39,106 INFO L85 PathProgramCache]: Analyzing trace with hash -675711906, now seen corresponding path program 1 times [2024-11-11 18:21:39,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-11 18:21:39,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1651514881] [2024-11-11 18:21:39,106 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 18:21:39,106 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-11 18:21:39,107 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-11 18:21:39,110 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-11 18:21:39,111 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2024-11-11 18:21:39,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 18:21:39,184 INFO L256 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-11 18:21:39,186 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 18:21:39,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 18:21:39,279 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-11 18:21:39,279 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-11 18:21:39,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1651514881] [2024-11-11 18:21:39,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1651514881] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 18:21:39,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-11 18:21:39,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-11 18:21:39,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052231825] [2024-11-11 18:21:39,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 18:21:39,280 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-11 18:21:39,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-11 18:21:39,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-11 18:21:39,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-11 18:21:39,281 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 18:21:39,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 18:21:39,363 INFO L93 Difference]: Finished difference Result 22 states and 21 transitions. [2024-11-11 18:21:39,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-11 18:21:39,363 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2024-11-11 18:21:39,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 18:21:39,364 INFO L225 Difference]: With dead ends: 22 [2024-11-11 18:21:39,364 INFO L226 Difference]: Without dead ends: 19 [2024-11-11 18:21:39,365 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-11 18:21:39,365 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 8 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-11 18:21:39,366 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 50 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-11 18:21:39,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2024-11-11 18:21:39,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2024-11-11 18:21:39,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.0) internal successors, (18), 18 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 18:21:39,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 18 transitions. [2024-11-11 18:21:39,369 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 18 transitions. Word has length 14 [2024-11-11 18:21:39,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 18:21:39,369 INFO L471 AbstractCegarLoop]: Abstraction has 19 states and 18 transitions. [2024-11-11 18:21:39,369 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 18:21:39,370 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 18 transitions. [2024-11-11 18:21:39,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-11 18:21:39,370 INFO L210 NwaCegarLoop]: Found error trace [2024-11-11 18:21:39,370 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-11 18:21:39,380 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2024-11-11 18:21:39,573 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-11 18:21:39,574 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-11 18:21:39,575 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-11 18:21:39,575 INFO L85 PathProgramCache]: Analyzing trace with hash 438125939, now seen corresponding path program 1 times [2024-11-11 18:21:39,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-11 18:21:39,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1191806262] [2024-11-11 18:21:39,575 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-11 18:21:39,576 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-11 18:21:39,576 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-11 18:21:39,579 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-11 18:21:39,582 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2024-11-11 18:21:39,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-11 18:21:39,660 INFO L256 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-11 18:21:39,666 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-11 18:21:39,846 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-11 18:21:39,852 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 14 [2024-11-11 18:21:39,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-11 18:21:39,940 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-11 18:21:39,940 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-11 18:21:39,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1191806262] [2024-11-11 18:21:39,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1191806262] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-11 18:21:39,941 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-11 18:21:39,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-11 18:21:39,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113233276] [2024-11-11 18:21:39,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-11 18:21:39,941 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-11 18:21:39,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-11 18:21:39,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-11 18:21:39,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2024-11-11 18:21:39,943 INFO L87 Difference]: Start difference. First operand 19 states and 18 transitions. Second operand has 11 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 11 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 18:21:40,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-11 18:21:40,162 INFO L93 Difference]: Finished difference Result 19 states and 18 transitions. [2024-11-11 18:21:40,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-11 18:21:40,162 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 11 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2024-11-11 18:21:40,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-11 18:21:40,162 INFO L225 Difference]: With dead ends: 19 [2024-11-11 18:21:40,162 INFO L226 Difference]: Without dead ends: 0 [2024-11-11 18:21:40,163 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2024-11-11 18:21:40,164 INFO L435 NwaCegarLoop]: 7 mSDtfsCounter, 17 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-11 18:21:40,164 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 51 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-11 18:21:40,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-11 18:21:40,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-11 18:21:40,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 18:21:40,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-11 18:21:40,165 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2024-11-11 18:21:40,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-11 18:21:40,165 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-11 18:21:40,168 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 11 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-11 18:21:40,168 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-11 18:21:40,168 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-11 18:21:40,171 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-11 18:21:40,177 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2024-11-11 18:21:40,371 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-11 18:21:40,375 INFO L421 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-11-11 18:21:40,377 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-11 18:21:40,440 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-11 18:21:40,467 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.11 06:21:40 BoogieIcfgContainer [2024-11-11 18:21:40,467 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-11 18:21:40,471 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-11 18:21:40,471 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-11 18:21:40,471 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-11 18:21:40,472 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.11 06:21:38" (3/4) ... [2024-11-11 18:21:40,478 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-11 18:21:40,511 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 21 nodes and edges [2024-11-11 18:21:40,512 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2024-11-11 18:21:40,513 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-11 18:21:40,518 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-11 18:21:40,622 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-11 18:21:40,623 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-11 18:21:40,623 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-11 18:21:40,624 INFO L158 Benchmark]: Toolchain (without parser) took 3403.83ms. Allocated memory was 83.9MB in the beginning and 100.7MB in the end (delta: 16.8MB). Free memory was 54.4MB in the beginning and 73.7MB in the end (delta: -19.3MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-11 18:21:40,624 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 56.6MB. Free memory was 28.5MB in the beginning and 28.5MB in the end (delta: 73.4kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-11 18:21:40,624 INFO L158 Benchmark]: CACSL2BoogieTranslator took 283.74ms. Allocated memory is still 83.9MB. Free memory was 54.4MB in the beginning and 40.7MB in the end (delta: 13.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-11-11 18:21:40,624 INFO L158 Benchmark]: Boogie Procedure Inliner took 42.04ms. Allocated memory is still 83.9MB. Free memory was 40.7MB in the beginning and 38.9MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-11 18:21:40,625 INFO L158 Benchmark]: Boogie Preprocessor took 65.73ms. Allocated memory is still 83.9MB. Free memory was 38.9MB in the beginning and 36.2MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-11 18:21:40,627 INFO L158 Benchmark]: RCFGBuilder took 420.95ms. Allocated memory is still 83.9MB. Free memory was 36.2MB in the beginning and 55.4MB in the end (delta: -19.1MB). Peak memory consumption was 11.8MB. Max. memory is 16.1GB. [2024-11-11 18:21:40,628 INFO L158 Benchmark]: TraceAbstraction took 2429.29ms. Allocated memory was 83.9MB in the beginning and 100.7MB in the end (delta: 16.8MB). Free memory was 55.0MB in the beginning and 78.6MB in the end (delta: -23.6MB). Peak memory consumption was 24.4MB. Max. memory is 16.1GB. [2024-11-11 18:21:40,628 INFO L158 Benchmark]: Witness Printer took 152.20ms. Allocated memory is still 100.7MB. Free memory was 78.6MB in the beginning and 73.7MB in the end (delta: 4.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-11 18:21:40,629 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 56.6MB. Free memory was 28.5MB in the beginning and 28.5MB in the end (delta: 73.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 283.74ms. Allocated memory is still 83.9MB. Free memory was 54.4MB in the beginning and 40.7MB in the end (delta: 13.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 42.04ms. Allocated memory is still 83.9MB. Free memory was 40.7MB in the beginning and 38.9MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 65.73ms. Allocated memory is still 83.9MB. Free memory was 38.9MB in the beginning and 36.2MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 420.95ms. Allocated memory is still 83.9MB. Free memory was 36.2MB in the beginning and 55.4MB in the end (delta: -19.1MB). Peak memory consumption was 11.8MB. Max. memory is 16.1GB. * TraceAbstraction took 2429.29ms. Allocated memory was 83.9MB in the beginning and 100.7MB in the end (delta: 16.8MB). Free memory was 55.0MB in the beginning and 78.6MB in the end (delta: -23.6MB). Peak memory consumption was 24.4MB. Max. memory is 16.1GB. * Witness Printer took 152.20ms. Allocated memory is still 100.7MB. Free memory was 78.6MB in the beginning and 73.7MB in the end (delta: 4.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 69]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 25 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2.3s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 37 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 37 mSDsluCounter, 176 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 113 mSDsCounter, 4 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 113 IncrementalHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4 mSolverCounterUnsat, 63 mSDtfsCounter, 113 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 59 GetRequests, 32 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=25occurred in iteration=0, InterpolantAutomatonStates: 25, 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, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 53 NumberOfCodeBlocks, 53 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 49 ConstructedInterpolants, 10 QuantifiedInterpolants, 254 SizeOfPredicates, 15 NumberOfNonLiveVariables, 186 ConjunctsInSsa, 42 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 32]: Loop Invariant Derived loop invariant: null - InvariantResult [Line: 48]: Loop Invariant Derived loop invariant: null - InvariantResult [Line: 26]: Loop Invariant Derived loop invariant: null - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: null RESULT: Ultimate proved your program to be correct! [2024-11-11 18:21:40,659 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE