./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-newlib/float_req_bl_1032c.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c7c6ca5d 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_1032c.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 fd5f0f5c445530fc66d295fb5f09c0eb7d918c0584248d18911478208fdeb537 --- Real Ultimate output --- This is Ultimate 0.2.5-?-c7c6ca5-m [2024-11-08 12:42:08,036 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 12:42:08,100 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-08 12:42:08,108 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 12:42:08,109 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 12:42:08,140 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 12:42:08,141 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 12:42:08,141 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 12:42:08,142 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 12:42:08,143 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 12:42:08,144 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 12:42:08,144 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 12:42:08,145 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 12:42:08,145 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 12:42:08,145 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 12:42:08,146 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 12:42:08,146 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-08 12:42:08,146 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 12:42:08,147 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 12:42:08,147 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 12:42:08,147 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 12:42:08,148 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-08 12:42:08,148 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 12:42:08,149 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-08 12:42:08,149 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 12:42:08,149 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 12:42:08,150 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-08 12:42:08,150 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 12:42:08,152 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 12:42:08,153 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 12:42:08,154 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 12:42:08,154 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 12:42:08,154 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 12:42:08,154 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 12:42:08,154 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 12:42:08,155 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-08 12:42:08,155 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-08 12:42:08,155 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 12:42:08,155 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 12:42:08,156 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 12:42:08,156 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 12:42:08,156 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 12:42:08,156 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fd5f0f5c445530fc66d295fb5f09c0eb7d918c0584248d18911478208fdeb537 [2024-11-08 12:42:08,372 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 12:42:08,396 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 12:42:08,399 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 12:42:08,400 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 12:42:08,400 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 12:42:08,401 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/float_req_bl_1032c.c [2024-11-08 12:42:09,774 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 12:42:09,927 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 12:42:09,927 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/float_req_bl_1032c.c [2024-11-08 12:42:09,934 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eaec59ee1/e6cc8b0e673e4ad291c5645bcd22e668/FLAG5f5e4a413 [2024-11-08 12:42:10,346 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eaec59ee1/e6cc8b0e673e4ad291c5645bcd22e668 [2024-11-08 12:42:10,348 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 12:42:10,350 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 12:42:10,352 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 12:42:10,353 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 12:42:10,358 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 12:42:10,358 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 12:42:10" (1/1) ... [2024-11-08 12:42:10,361 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2942acab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 12:42:10, skipping insertion in model container [2024-11-08 12:42:10,361 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 12:42:10" (1/1) ... [2024-11-08 12:42:10,379 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 12:42:10,576 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_1032c.c[1743,1756] [2024-11-08 12:42:10,584 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 12:42:10,601 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 12:42:10,631 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_1032c.c[1743,1756] [2024-11-08 12:42:10,632 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 12:42:10,654 INFO L204 MainTranslator]: Completed translation [2024-11-08 12:42:10,654 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 12:42:10 WrapperNode [2024-11-08 12:42:10,654 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 12:42:10,655 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 12:42:10,655 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 12:42:10,655 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 12:42:10,661 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 12:42:10" (1/1) ... [2024-11-08 12:42:10,667 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 12:42:10" (1/1) ... [2024-11-08 12:42:10,688 INFO L138 Inliner]: procedures = 16, calls = 21, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 131 [2024-11-08 12:42:10,688 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 12:42:10,689 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 12:42:10,689 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 12:42:10,692 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 12:42:10,702 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 12:42:10" (1/1) ... [2024-11-08 12:42:10,702 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 12:42:10" (1/1) ... [2024-11-08 12:42:10,704 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 12:42:10" (1/1) ... [2024-11-08 12:42:10,718 INFO L175 MemorySlicer]: Split 8 memory accesses to 4 slices as follows [2, 2, 2, 2]. 25 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0]. The 3 writes are split as follows [0, 1, 1, 1]. [2024-11-08 12:42:10,718 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 12:42:10" (1/1) ... [2024-11-08 12:42:10,719 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 12:42:10" (1/1) ... [2024-11-08 12:42:10,726 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 12:42:10" (1/1) ... [2024-11-08 12:42:10,729 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 12:42:10" (1/1) ... [2024-11-08 12:42:10,731 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 12:42:10" (1/1) ... [2024-11-08 12:42:10,732 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 12:42:10" (1/1) ... [2024-11-08 12:42:10,735 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 12:42:10,736 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 12:42:10,736 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 12:42:10,736 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 12:42:10,737 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 12:42:10" (1/1) ... [2024-11-08 12:42:10,746 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 12:42:10,767 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 12:42:10,791 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) [2024-11-08 12:42:10,798 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 [2024-11-08 12:42:10,847 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 12:42:10,847 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-08 12:42:10,848 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-08 12:42:10,848 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-08 12:42:10,848 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-08 12:42:10,848 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-08 12:42:10,848 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#0 [2024-11-08 12:42:10,848 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#1 [2024-11-08 12:42:10,850 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#2 [2024-11-08 12:42:10,850 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#3 [2024-11-08 12:42:10,851 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-08 12:42:10,851 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-08 12:42:10,851 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-08 12:42:10,851 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-08 12:42:10,851 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#0 [2024-11-08 12:42:10,851 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#1 [2024-11-08 12:42:10,851 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#2 [2024-11-08 12:42:10,852 INFO L130 BoogieDeclarations]: Found specification of procedure write~real#3 [2024-11-08 12:42:10,852 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 12:42:10,852 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 12:42:10,852 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-08 12:42:10,853 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-08 12:42:10,853 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-08 12:42:10,853 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-08 12:42:10,853 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-08 12:42:10,982 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 12:42:10,984 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 12:42:11,253 INFO L? ?]: Removed 27 outVars from TransFormulas that were not future-live. [2024-11-08 12:42:11,253 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 12:42:11,267 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 12:42:11,268 INFO L316 CfgBuilder]: Removed 6 assume(true) statements. [2024-11-08 12:42:11,268 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 12:42:11 BoogieIcfgContainer [2024-11-08 12:42:11,270 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 12:42:11,273 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 12:42:11,273 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 12:42:11,276 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 12:42:11,277 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 12:42:10" (1/3) ... [2024-11-08 12:42:11,277 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7226482c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 12:42:11, skipping insertion in model container [2024-11-08 12:42:11,278 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 12:42:10" (2/3) ... [2024-11-08 12:42:11,278 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7226482c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 12:42:11, skipping insertion in model container [2024-11-08 12:42:11,278 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 12:42:11" (3/3) ... [2024-11-08 12:42:11,279 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1032c.c [2024-11-08 12:42:11,296 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 12:42:11,297 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-08 12:42:11,405 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 12:42:11,414 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;@7e472b81, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 12:42:11,414 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-08 12:42:11,420 INFO L276 IsEmpty]: Start isEmpty. Operand has 44 states, 42 states have (on average 1.5476190476190477) internal successors, (65), 43 states have internal predecessors, (65), 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) [2024-11-08 12:42:11,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-08 12:42:11,427 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 12:42:11,427 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 12:42:11,428 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 12:42:11,434 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 12:42:11,435 INFO L85 PathProgramCache]: Analyzing trace with hash -379043067, now seen corresponding path program 1 times [2024-11-08 12:42:11,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 12:42:11,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691569125] [2024-11-08 12:42:11,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 12:42:11,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 12:42:11,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 12:42:11,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 12:42:11,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 12:42:11,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691569125] [2024-11-08 12:42:11,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691569125] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 12:42:11,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 12:42:11,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 12:42:11,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006681369] [2024-11-08 12:42:11,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 12:42:11,610 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-08 12:42:11,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 12:42:11,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-08 12:42:11,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-08 12:42:11,632 INFO L87 Difference]: Start difference. First operand has 44 states, 42 states have (on average 1.5476190476190477) internal successors, (65), 43 states have internal predecessors, (65), 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 6.5) internal successors, (13), 2 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) [2024-11-08 12:42:11,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 12:42:11,646 INFO L93 Difference]: Finished difference Result 86 states and 128 transitions. [2024-11-08 12:42:11,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-08 12:42:11,648 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 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 [2024-11-08 12:42:11,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 12:42:11,656 INFO L225 Difference]: With dead ends: 86 [2024-11-08 12:42:11,656 INFO L226 Difference]: Without dead ends: 41 [2024-11-08 12:42:11,659 INFO L431 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 [2024-11-08 12:42:11,662 INFO L432 NwaCegarLoop]: 57 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, 57 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 [2024-11-08 12:42:11,663 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 12:42:11,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2024-11-08 12:42:11,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2024-11-08 12:42:11,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 40 states have (on average 1.35) internal successors, (54), 40 states have internal predecessors, (54), 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) [2024-11-08 12:42:11,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 54 transitions. [2024-11-08 12:42:11,692 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 54 transitions. Word has length 13 [2024-11-08 12:42:11,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 12:42:11,692 INFO L471 AbstractCegarLoop]: Abstraction has 41 states and 54 transitions. [2024-11-08 12:42:11,692 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 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) [2024-11-08 12:42:11,692 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 54 transitions. [2024-11-08 12:42:11,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-08 12:42:11,693 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 12:42:11,693 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 12:42:11,694 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-08 12:42:11,694 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 12:42:11,695 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 12:42:11,695 INFO L85 PathProgramCache]: Analyzing trace with hash 634386670, now seen corresponding path program 1 times [2024-11-08 12:42:11,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 12:42:11,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629958112] [2024-11-08 12:42:11,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 12:42:11,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 12:42:11,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 12:42:12,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 12:42:12,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 12:42:12,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629958112] [2024-11-08 12:42:12,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1629958112] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 12:42:12,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 12:42:12,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 12:42:12,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473705560] [2024-11-08 12:42:12,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 12:42:12,121 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 12:42:12,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 12:42:12,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 12:42:12,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 12:42:12,124 INFO L87 Difference]: Start difference. First operand 41 states and 54 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 12:42:12,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 12:42:12,217 INFO L93 Difference]: Finished difference Result 82 states and 110 transitions. [2024-11-08 12:42:12,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 12:42:12,218 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2024-11-08 12:42:12,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 12:42:12,219 INFO L225 Difference]: With dead ends: 82 [2024-11-08 12:42:12,223 INFO L226 Difference]: Without dead ends: 55 [2024-11-08 12:42:12,224 INFO L431 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 [2024-11-08 12:42:12,225 INFO L432 NwaCegarLoop]: 46 mSDtfsCounter, 13 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 12:42:12,226 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 125 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 12:42:12,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2024-11-08 12:42:12,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 54. [2024-11-08 12:42:12,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 53 states have (on average 1.3584905660377358) internal successors, (72), 53 states have internal predecessors, (72), 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) [2024-11-08 12:42:12,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 72 transitions. [2024-11-08 12:42:12,240 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 72 transitions. Word has length 15 [2024-11-08 12:42:12,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 12:42:12,244 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 72 transitions. [2024-11-08 12:42:12,244 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 12:42:12,244 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 72 transitions. [2024-11-08 12:42:12,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-08 12:42:12,245 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 12:42:12,245 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 12:42:12,245 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-08 12:42:12,245 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 12:42:12,246 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 12:42:12,246 INFO L85 PathProgramCache]: Analyzing trace with hash -174959956, now seen corresponding path program 1 times [2024-11-08 12:42:12,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 12:42:12,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794164486] [2024-11-08 12:42:12,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 12:42:12,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 12:42:12,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 12:42:12,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 12:42:12,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 12:42:12,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794164486] [2024-11-08 12:42:12,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794164486] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 12:42:12,506 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 12:42:12,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 12:42:12,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079367729] [2024-11-08 12:42:12,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 12:42:12,508 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 12:42:12,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 12:42:12,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 12:42:12,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 12:42:12,511 INFO L87 Difference]: Start difference. First operand 54 states and 72 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 12:42:12,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 12:42:12,568 INFO L93 Difference]: Finished difference Result 71 states and 90 transitions. [2024-11-08 12:42:12,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 12:42:12,569 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2024-11-08 12:42:12,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 12:42:12,569 INFO L225 Difference]: With dead ends: 71 [2024-11-08 12:42:12,570 INFO L226 Difference]: Without dead ends: 45 [2024-11-08 12:42:12,570 INFO L431 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 [2024-11-08 12:42:12,571 INFO L432 NwaCegarLoop]: 50 mSDtfsCounter, 2 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 12:42:12,571 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 134 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 12:42:12,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2024-11-08 12:42:12,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2024-11-08 12:42:12,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 44 states have (on average 1.3181818181818181) internal successors, (58), 44 states have internal predecessors, (58), 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) [2024-11-08 12:42:12,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 58 transitions. [2024-11-08 12:42:12,584 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 58 transitions. Word has length 15 [2024-11-08 12:42:12,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 12:42:12,584 INFO L471 AbstractCegarLoop]: Abstraction has 45 states and 58 transitions. [2024-11-08 12:42:12,584 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 12:42:12,585 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 58 transitions. [2024-11-08 12:42:12,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-08 12:42:12,585 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 12:42:12,585 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 12:42:12,586 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-08 12:42:12,586 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 12:42:12,587 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 12:42:12,587 INFO L85 PathProgramCache]: Analyzing trace with hash -1210557394, now seen corresponding path program 1 times [2024-11-08 12:42:12,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 12:42:12,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948198109] [2024-11-08 12:42:12,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 12:42:12,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 12:42:12,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-08 12:42:12,629 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-08 12:42:12,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-08 12:42:12,680 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-08 12:42:12,680 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-08 12:42:12,682 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-08 12:42:12,683 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-08 12:42:12,686 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-11-08 12:42:12,710 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-08 12:42:12,714 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.11 12:42:12 BoogieIcfgContainer [2024-11-08 12:42:12,717 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-08 12:42:12,718 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-08 12:42:12,718 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-08 12:42:12,718 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-08 12:42:12,719 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 12:42:11" (3/4) ... [2024-11-08 12:42:12,721 INFO L145 WitnessPrinter]: No result that supports witness generation found [2024-11-08 12:42:12,723 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-08 12:42:12,725 INFO L158 Benchmark]: Toolchain (without parser) took 2373.40ms. Allocated memory was 161.5MB in the beginning and 241.2MB in the end (delta: 79.7MB). Free memory was 106.9MB in the beginning and 130.6MB in the end (delta: -23.7MB). Peak memory consumption was 58.1MB. Max. memory is 16.1GB. [2024-11-08 12:42:12,725 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 161.5MB. Free memory is still 120.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-08 12:42:12,726 INFO L158 Benchmark]: CACSL2BoogieTranslator took 302.09ms. Allocated memory is still 161.5MB. Free memory was 106.5MB in the beginning and 93.5MB in the end (delta: 13.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-11-08 12:42:12,726 INFO L158 Benchmark]: Boogie Procedure Inliner took 33.15ms. Allocated memory is still 161.5MB. Free memory was 93.5MB in the beginning and 91.8MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-08 12:42:12,726 INFO L158 Benchmark]: Boogie Preprocessor took 46.06ms. Allocated memory is still 161.5MB. Free memory was 91.4MB in the beginning and 88.9MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-08 12:42:12,727 INFO L158 Benchmark]: RCFGBuilder took 534.06ms. Allocated memory is still 161.5MB. Free memory was 88.9MB in the beginning and 71.8MB in the end (delta: 17.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-08 12:42:12,727 INFO L158 Benchmark]: TraceAbstraction took 1444.79ms. Allocated memory was 161.5MB in the beginning and 241.2MB in the end (delta: 79.7MB). Free memory was 71.4MB in the beginning and 130.6MB in the end (delta: -59.2MB). Peak memory consumption was 22.5MB. Max. memory is 16.1GB. [2024-11-08 12:42:12,727 INFO L158 Benchmark]: Witness Printer took 4.93ms. Allocated memory is still 241.2MB. Free memory is still 130.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-08 12:42:12,731 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 161.5MB. Free memory is still 120.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 302.09ms. Allocated memory is still 161.5MB. Free memory was 106.5MB in the beginning and 93.5MB in the end (delta: 13.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 33.15ms. Allocated memory is still 161.5MB. Free memory was 93.5MB in the beginning and 91.8MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 46.06ms. Allocated memory is still 161.5MB. Free memory was 91.4MB in the beginning and 88.9MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 534.06ms. Allocated memory is still 161.5MB. Free memory was 88.9MB in the beginning and 71.8MB in the end (delta: 17.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 1444.79ms. Allocated memory was 161.5MB in the beginning and 241.2MB in the end (delta: 79.7MB). Free memory was 71.4MB in the beginning and 130.6MB in the end (delta: -59.2MB). Peak memory consumption was 22.5MB. Max. memory is 16.1GB. * Witness Printer took 4.93ms. Allocated memory is still 241.2MB. Free memory is still 130.6MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 81]: 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 someBinaryArithmeticFLOAToperation at line 44. Possible FailurePath: [L76] float x = 1.0f / 0.0f; [L77] CALL, EXPR round_float(x) [L14] __uint32_t w; [L16] int exponent_less_127; VAL [x=2147483661] [L19] ieee_float_shape_type gf_u; [L20] gf_u.value = (x) [L21] EXPR gf_u.word [L21] (w) = gf_u.word [L24] EXPR w & 0x7f800000 VAL [w=-2155872256, x=2147483661] [L24] exponent_less_127 = (int)((w & 0x7f800000) >> 23) - 127 [L26] COND FALSE !(exponent_less_127 < 23) VAL [exponent_less_127=128, w=-2155872256, x=2147483661] [L42] COND TRUE exponent_less_127 == 128 [L44] return x + x; VAL [w=-2155872256, x=2147483661] [L77] RET, EXPR round_float(x) [L77] float res = round_float(x); [L80] CALL, EXPR isinf_float(res) [L58] __int32_t ix; VAL [x=2147483662] [L60] ieee_float_shape_type gf_u; [L61] gf_u.value = (x) [L62] EXPR gf_u.word [L62] (ix) = gf_u.word [L64] ix &= 0x7fffffff [L65] return ((ix) == 0x7f800000L); VAL [\result=0, x=2147483662] [L80] RET, EXPR isinf_float(res) [L80] COND TRUE !isinf_float(res) [L81] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 44 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.3s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 15 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 15 mSDsluCounter, 316 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 163 mSDsCounter, 4 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 66 IncrementalHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4 mSolverCounterUnsat, 153 mSDtfsCounter, 66 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=54occurred in iteration=2, 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, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 59 NumberOfCodeBlocks, 59 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 40 ConstructedInterpolants, 0 QuantifiedInterpolants, 64 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 [2024-11-08 12:42:12,760 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /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_1032c.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 fd5f0f5c445530fc66d295fb5f09c0eb7d918c0584248d18911478208fdeb537 --- Real Ultimate output --- This is Ultimate 0.2.5-?-c7c6ca5-m [2024-11-08 12:42:14,972 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 12:42:15,059 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2024-11-08 12:42:15,067 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 12:42:15,068 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 12:42:15,099 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 12:42:15,104 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 12:42:15,104 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 12:42:15,105 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 12:42:15,105 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 12:42:15,105 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 12:42:15,106 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 12:42:15,107 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 12:42:15,111 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 12:42:15,112 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 12:42:15,112 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 12:42:15,112 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-08 12:42:15,112 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 12:42:15,113 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 12:42:15,113 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 12:42:15,113 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-08 12:42:15,114 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 12:42:15,115 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-08 12:42:15,115 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-08 12:42:15,116 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-08 12:42:15,116 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 12:42:15,116 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-08 12:42:15,117 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 12:42:15,117 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-08 12:42:15,117 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 12:42:15,118 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 12:42:15,118 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 12:42:15,119 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 12:42:15,119 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 12:42:15,120 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 12:42:15,120 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 12:42:15,120 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 12:42:15,120 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-08 12:42:15,121 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-08 12:42:15,121 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-08 12:42:15,122 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 12:42:15,122 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 12:42:15,122 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 12:42:15,123 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 12:42:15,123 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fd5f0f5c445530fc66d295fb5f09c0eb7d918c0584248d18911478208fdeb537 [2024-11-08 12:42:15,462 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 12:42:15,486 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 12:42:15,489 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 12:42:15,490 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 12:42:15,491 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 12:42:15,492 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/float_req_bl_1032c.c [2024-11-08 12:42:17,026 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 12:42:17,220 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 12:42:17,221 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/float_req_bl_1032c.c [2024-11-08 12:42:17,231 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c76c5ba54/5d2857190d44498ebd6c94284ff386d6/FLAG9013d87ac [2024-11-08 12:42:17,609 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c76c5ba54/5d2857190d44498ebd6c94284ff386d6 [2024-11-08 12:42:17,611 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 12:42:17,612 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 12:42:17,614 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 12:42:17,614 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 12:42:17,621 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 12:42:17,621 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 12:42:17" (1/1) ... [2024-11-08 12:42:17,624 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53e5f0c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 12:42:17, skipping insertion in model container [2024-11-08 12:42:17,624 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 12:42:17" (1/1) ... [2024-11-08 12:42:17,643 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 12:42:17,822 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_1032c.c[1743,1756] [2024-11-08 12:42:17,827 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 12:42:17,849 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 12:42:17,874 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_1032c.c[1743,1756] [2024-11-08 12:42:17,875 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 12:42:17,899 INFO L204 MainTranslator]: Completed translation [2024-11-08 12:42:17,900 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 12:42:17 WrapperNode [2024-11-08 12:42:17,900 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 12:42:17,901 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 12:42:17,901 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 12:42:17,902 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 12:42:17,909 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 12:42:17" (1/1) ... [2024-11-08 12:42:17,919 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 12:42:17" (1/1) ... [2024-11-08 12:42:17,944 INFO L138 Inliner]: procedures = 19, calls = 21, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 87 [2024-11-08 12:42:17,944 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 12:42:17,945 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 12:42:17,946 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 12:42:17,946 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 12:42:17,955 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 12:42:17" (1/1) ... [2024-11-08 12:42:17,956 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 12:42:17" (1/1) ... [2024-11-08 12:42:17,963 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 12:42:17" (1/1) ... [2024-11-08 12:42:17,983 INFO L175 MemorySlicer]: Split 8 memory accesses to 4 slices as follows [2, 2, 2, 2]. 25 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0]. The 3 writes are split as follows [0, 1, 1, 1]. [2024-11-08 12:42:17,985 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 12:42:17" (1/1) ... [2024-11-08 12:42:17,985 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 12:42:17" (1/1) ... [2024-11-08 12:42:18,009 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 12:42:17" (1/1) ... [2024-11-08 12:42:18,015 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 12:42:17" (1/1) ... [2024-11-08 12:42:18,019 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 12:42:17" (1/1) ... [2024-11-08 12:42:18,020 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 12:42:17" (1/1) ... [2024-11-08 12:42:18,030 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 12:42:18,031 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 12:42:18,031 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 12:42:18,031 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 12:42:18,032 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 12:42:17" (1/1) ... [2024-11-08 12:42:18,041 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 12:42:18,052 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 12:42:18,070 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) [2024-11-08 12:42:18,073 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 [2024-11-08 12:42:18,118 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 12:42:18,118 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-08 12:42:18,118 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-11-08 12:42:18,118 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2024-11-08 12:42:18,119 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#3 [2024-11-08 12:42:18,120 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-08 12:42:18,120 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#0 [2024-11-08 12:42:18,120 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#1 [2024-11-08 12:42:18,120 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#2 [2024-11-08 12:42:18,121 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#3 [2024-11-08 12:42:18,121 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2024-11-08 12:42:18,121 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2024-11-08 12:42:18,121 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2024-11-08 12:42:18,121 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#3 [2024-11-08 12:42:18,121 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 12:42:18,121 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 12:42:18,122 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#0 [2024-11-08 12:42:18,122 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#1 [2024-11-08 12:42:18,122 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#2 [2024-11-08 12:42:18,122 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4#3 [2024-11-08 12:42:18,123 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2024-11-08 12:42:18,123 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2024-11-08 12:42:18,123 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2024-11-08 12:42:18,123 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#3 [2024-11-08 12:42:18,123 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-08 12:42:18,243 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 12:42:18,245 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 12:42:18,457 INFO L? ?]: Removed 20 outVars from TransFormulas that were not future-live. [2024-11-08 12:42:18,458 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 12:42:18,470 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 12:42:18,471 INFO L316 CfgBuilder]: Removed 6 assume(true) statements. [2024-11-08 12:42:18,471 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 12:42:18 BoogieIcfgContainer [2024-11-08 12:42:18,471 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 12:42:18,475 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 12:42:18,475 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 12:42:18,478 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 12:42:18,479 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 12:42:17" (1/3) ... [2024-11-08 12:42:18,479 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@326d2f52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 12:42:18, skipping insertion in model container [2024-11-08 12:42:18,480 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 12:42:17" (2/3) ... [2024-11-08 12:42:18,480 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@326d2f52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 12:42:18, skipping insertion in model container [2024-11-08 12:42:18,480 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 12:42:18" (3/3) ... [2024-11-08 12:42:18,482 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1032c.c [2024-11-08 12:42:18,498 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 12:42:18,499 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-08 12:42:18,561 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 12:42:18,568 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;@3aa56b1d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 12:42:18,568 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-08 12:42:18,572 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 23 states have internal predecessors, (35), 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) [2024-11-08 12:42:18,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-08 12:42:18,578 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 12:42:18,578 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 12:42:18,579 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 12:42:18,584 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 12:42:18,585 INFO L85 PathProgramCache]: Analyzing trace with hash -592327338, now seen corresponding path program 1 times [2024-11-08 12:42:18,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-08 12:42:18,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [468489480] [2024-11-08 12:42:18,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 12:42:18,596 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 [2024-11-08 12:42:18,596 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-08 12:42:18,599 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) [2024-11-08 12:42:18,601 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 [2024-11-08 12:42:18,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 12:42:18,698 INFO L255 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-08 12:42:18,701 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 12:42:18,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 12:42:18,726 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 12:42:18,726 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-08 12:42:18,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [468489480] [2024-11-08 12:42:18,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [468489480] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 12:42:18,727 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 12:42:18,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 12:42:18,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931190756] [2024-11-08 12:42:18,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 12:42:18,733 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-08 12:42:18,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-08 12:42:18,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-08 12:42:18,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-08 12:42:18,754 INFO L87 Difference]: Start difference. First operand has 24 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 23 states have internal predecessors, (35), 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) [2024-11-08 12:42:18,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 12:42:18,770 INFO L93 Difference]: Finished difference Result 46 states and 68 transitions. [2024-11-08 12:42:18,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-08 12:42:18,772 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 [2024-11-08 12:42:18,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 12:42:18,778 INFO L225 Difference]: With dead ends: 46 [2024-11-08 12:42:18,778 INFO L226 Difference]: Without dead ends: 21 [2024-11-08 12:42:18,781 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-08 12:42:18,784 INFO L432 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 [2024-11-08 12:42:18,785 INFO L433 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] [2024-11-08 12:42:18,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2024-11-08 12:42:18,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2024-11-08 12:42:18,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.25) internal successors, (25), 20 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) [2024-11-08 12:42:18,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2024-11-08 12:42:18,812 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 12 [2024-11-08 12:42:18,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 12:42:18,813 INFO L471 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2024-11-08 12:42:18,813 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) [2024-11-08 12:42:18,813 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2024-11-08 12:42:18,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-08 12:42:18,814 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 12:42:18,814 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 12:42:18,819 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 [2024-11-08 12:42:19,015 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 [2024-11-08 12:42:19,015 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 12:42:19,016 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 12:42:19,016 INFO L85 PathProgramCache]: Analyzing trace with hash 1651159701, now seen corresponding path program 1 times [2024-11-08 12:42:19,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-08 12:42:19,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [743031376] [2024-11-08 12:42:19,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 12:42:19,017 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 [2024-11-08 12:42:19,017 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-08 12:42:19,020 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) [2024-11-08 12:42:19,022 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 [2024-11-08 12:42:19,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 12:42:19,140 INFO L255 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-08 12:42:19,146 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 12:42:19,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 12:42:19,422 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 12:42:19,422 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-08 12:42:19,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [743031376] [2024-11-08 12:42:19,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [743031376] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 12:42:19,423 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 12:42:19,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-08 12:42:19,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112725838] [2024-11-08 12:42:19,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 12:42:19,426 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-08 12:42:19,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-08 12:42:19,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-08 12:42:19,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-11-08 12:42:19,427 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand has 9 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 8 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) [2024-11-08 12:42:19,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 12:42:19,648 INFO L93 Difference]: Finished difference Result 29 states and 32 transitions. [2024-11-08 12:42:19,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-08 12:42:19,648 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 8 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 [2024-11-08 12:42:19,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 12:42:19,649 INFO L225 Difference]: With dead ends: 29 [2024-11-08 12:42:19,649 INFO L226 Difference]: Without dead ends: 20 [2024-11-08 12:42:19,650 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2024-11-08 12:42:19,651 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 33 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 12:42:19,652 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 99 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 12:42:19,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2024-11-08 12:42:19,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2024-11-08 12:42:19,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.105263157894737) internal successors, (21), 19 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 12:42:19,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2024-11-08 12:42:19,655 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 14 [2024-11-08 12:42:19,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 12:42:19,655 INFO L471 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2024-11-08 12:42:19,656 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 8 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) [2024-11-08 12:42:19,656 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2024-11-08 12:42:19,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-08 12:42:19,656 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 12:42:19,657 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 12:42:19,662 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 (3)] Forceful destruction successful, exit code 0 [2024-11-08 12:42:19,857 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 [2024-11-08 12:42:19,858 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 12:42:19,859 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 12:42:19,859 INFO L85 PathProgramCache]: Analyzing trace with hash 842294842, now seen corresponding path program 1 times [2024-11-08 12:42:19,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-08 12:42:19,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1858911591] [2024-11-08 12:42:19,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 12:42:19,860 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 [2024-11-08 12:42:19,860 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-08 12:42:19,862 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) [2024-11-08 12:42:19,863 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 [2024-11-08 12:42:19,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 12:42:19,970 INFO L255 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-08 12:42:19,973 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 12:42:20,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 12:42:20,124 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 12:42:20,124 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-08 12:42:20,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1858911591] [2024-11-08 12:42:20,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1858911591] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 12:42:20,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 12:42:20,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 12:42:20,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964567651] [2024-11-08 12:42:20,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 12:42:20,125 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 12:42:20,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-08 12:42:20,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 12:42:20,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 12:42:20,130 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 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) [2024-11-08 12:42:20,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 12:42:20,233 INFO L93 Difference]: Finished difference Result 20 states and 21 transitions. [2024-11-08 12:42:20,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 12:42:20,234 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 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 [2024-11-08 12:42:20,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 12:42:20,234 INFO L225 Difference]: With dead ends: 20 [2024-11-08 12:42:20,234 INFO L226 Difference]: Without dead ends: 0 [2024-11-08 12:42:20,235 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-08 12:42:20,238 INFO L432 NwaCegarLoop]: 3 mSDtfsCounter, 4 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 12:42:20,240 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 7 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 12:42:20,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-08 12:42:20,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-08 12:42:20,241 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) [2024-11-08 12:42:20,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-08 12:42:20,241 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2024-11-08 12:42:20,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 12:42:20,241 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-08 12:42:20,241 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 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) [2024-11-08 12:42:20,241 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-08 12:42:20,241 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-08 12:42:20,246 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-08 12:42:20,251 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 [2024-11-08 12:42:20,450 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 [2024-11-08 12:42:20,453 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2024-11-08 12:42:20,455 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-08 12:42:20,505 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-08 12:42:20,517 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.11 12:42:20 BoogieIcfgContainer [2024-11-08 12:42:20,518 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-08 12:42:20,519 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-08 12:42:20,519 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-08 12:42:20,519 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-08 12:42:20,524 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 12:42:18" (3/4) ... [2024-11-08 12:42:20,526 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-08 12:42:20,538 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2024-11-08 12:42:20,539 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2024-11-08 12:42:20,540 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-08 12:42:20,540 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-08 12:42:20,624 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-08 12:42:20,625 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-08 12:42:20,625 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-08 12:42:20,626 INFO L158 Benchmark]: Toolchain (without parser) took 3013.08ms. Allocated memory was 79.7MB in the beginning and 96.5MB in the end (delta: 16.8MB). Free memory was 53.7MB in the beginning and 68.3MB in the end (delta: -14.6MB). Peak memory consumption was 3.8MB. Max. memory is 16.1GB. [2024-11-08 12:42:20,626 INFO L158 Benchmark]: CDTParser took 1.10ms. Allocated memory is still 60.8MB. Free memory was 32.1MB in the beginning and 32.1MB in the end (delta: 73.4kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-08 12:42:20,627 INFO L158 Benchmark]: CACSL2BoogieTranslator took 286.76ms. Allocated memory is still 79.7MB. Free memory was 53.5MB in the beginning and 39.9MB in the end (delta: 13.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-11-08 12:42:20,627 INFO L158 Benchmark]: Boogie Procedure Inliner took 43.32ms. Allocated memory is still 79.7MB. Free memory was 39.9MB in the beginning and 38.2MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-08 12:42:20,627 INFO L158 Benchmark]: Boogie Preprocessor took 84.89ms. Allocated memory is still 79.7MB. Free memory was 38.2MB in the beginning and 59.1MB in the end (delta: -20.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-08 12:42:20,628 INFO L158 Benchmark]: RCFGBuilder took 440.31ms. Allocated memory is still 79.7MB. Free memory was 59.1MB in the beginning and 44.8MB in the end (delta: 14.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2024-11-08 12:42:20,628 INFO L158 Benchmark]: TraceAbstraction took 2043.82ms. Allocated memory was 79.7MB in the beginning and 96.5MB in the end (delta: 16.8MB). Free memory was 44.1MB in the beginning and 72.5MB in the end (delta: -28.4MB). Peak memory consumption was 15.2MB. Max. memory is 16.1GB. [2024-11-08 12:42:20,628 INFO L158 Benchmark]: Witness Printer took 106.05ms. Allocated memory is still 96.5MB. Free memory was 72.5MB in the beginning and 68.3MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-11-08 12:42:20,630 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.10ms. Allocated memory is still 60.8MB. Free memory was 32.1MB in the beginning and 32.1MB in the end (delta: 73.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 286.76ms. Allocated memory is still 79.7MB. Free memory was 53.5MB in the beginning and 39.9MB in the end (delta: 13.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 43.32ms. Allocated memory is still 79.7MB. Free memory was 39.9MB in the beginning and 38.2MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 84.89ms. Allocated memory is still 79.7MB. Free memory was 38.2MB in the beginning and 59.1MB in the end (delta: -20.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 440.31ms. Allocated memory is still 79.7MB. Free memory was 59.1MB in the beginning and 44.8MB in the end (delta: 14.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 2043.82ms. Allocated memory was 79.7MB in the beginning and 96.5MB in the end (delta: 16.8MB). Free memory was 44.1MB in the beginning and 72.5MB in the end (delta: -28.4MB). Peak memory consumption was 15.2MB. Max. memory is 16.1GB. * Witness Printer took 106.05ms. Allocated memory is still 96.5MB. Free memory was 72.5MB in the beginning and 68.3MB in the end (delta: 4.2MB). 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: 81]: 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, 24 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.9s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 37 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 37 mSDsluCounter, 134 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 87 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 67 IncrementalHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 47 mSDtfsCounter, 67 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 48 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred in iteration=0, InterpolantAutomatonStates: 16, 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, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 44 NumberOfCodeBlocks, 44 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 41 ConstructedInterpolants, 4 QuantifiedInterpolants, 235 SizeOfPredicates, 8 NumberOfNonLiveVariables, 153 ConjunctsInSsa, 26 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: null - InvariantResult [Line: 48]: Loop Invariant Derived loop invariant: null - InvariantResult [Line: 59]: Loop Invariant Derived loop invariant: null RESULT: Ultimate proved your program to be correct! [2024-11-08 12:42:20,659 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE