./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/interpolation2.c.v+cfa-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 61a67961 Calling Ultimate with: /root/.sdkman/candidates/java/current/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 /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/interpolation2.c.v+cfa-reducer.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 a4b21fc033f5ea5cebc3419535848f3ce92b08a7177da8a580c018ae56dea99e --- Real Ultimate output --- This is Ultimate 0.2.5-wip.fs.cvc5-61a6796-m [2024-10-14 00:32:31,974 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-14 00:32:32,045 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-14 00:32:32,052 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-14 00:32:32,053 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-14 00:32:32,077 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-14 00:32:32,078 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-14 00:32:32,078 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-14 00:32:32,079 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-14 00:32:32,080 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-14 00:32:32,081 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-14 00:32:32,081 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-14 00:32:32,082 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-14 00:32:32,082 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-14 00:32:32,083 INFO L153 SettingsManager]: * Use SBE=true [2024-10-14 00:32:32,083 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-14 00:32:32,083 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-14 00:32:32,084 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-14 00:32:32,084 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-14 00:32:32,084 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-14 00:32:32,084 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-14 00:32:32,087 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-14 00:32:32,087 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-14 00:32:32,087 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-14 00:32:32,087 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-14 00:32:32,088 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-14 00:32:32,088 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-14 00:32:32,088 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-14 00:32:32,088 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-14 00:32:32,089 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-14 00:32:32,090 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-14 00:32:32,090 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-14 00:32:32,090 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 00:32:32,091 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-14 00:32:32,091 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-14 00:32:32,091 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-14 00:32:32,091 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-14 00:32:32,092 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-14 00:32:32,092 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-14 00:32:32,093 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-14 00:32:32,093 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-14 00:32:32,094 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-14 00:32:32,094 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a4b21fc033f5ea5cebc3419535848f3ce92b08a7177da8a580c018ae56dea99e [2024-10-14 00:32:32,322 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-14 00:32:32,353 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-14 00:32:32,356 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-14 00:32:32,358 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-14 00:32:32,358 INFO L274 PluginConnector]: CDTParser initialized [2024-10-14 00:32:32,360 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/interpolation2.c.v+cfa-reducer.c [2024-10-14 00:32:33,880 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-14 00:32:34,100 INFO L384 CDTParser]: Found 1 translation units. [2024-10-14 00:32:34,101 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/interpolation2.c.v+cfa-reducer.c [2024-10-14 00:32:34,111 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/429c05645/391142da0080460ab169a17b49bb3af4/FLAG28c65e8b7 [2024-10-14 00:32:34,127 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/429c05645/391142da0080460ab169a17b49bb3af4 [2024-10-14 00:32:34,130 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-14 00:32:34,132 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-14 00:32:34,134 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-14 00:32:34,135 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-14 00:32:34,140 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-14 00:32:34,141 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 12:32:34" (1/1) ... [2024-10-14 00:32:34,144 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1232899f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:32:34, skipping insertion in model container [2024-10-14 00:32:34,144 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 12:32:34" (1/1) ... [2024-10-14 00:32:34,167 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-14 00:32:34,360 WARN L248 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-benchs/interpolation2.c.v+cfa-reducer.c[1463,1476] [2024-10-14 00:32:34,369 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 00:32:34,380 INFO L200 MainTranslator]: Completed pre-run [2024-10-14 00:32:34,414 WARN L248 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-benchs/interpolation2.c.v+cfa-reducer.c[1463,1476] [2024-10-14 00:32:34,419 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 00:32:34,443 INFO L204 MainTranslator]: Completed translation [2024-10-14 00:32:34,443 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:32:34 WrapperNode [2024-10-14 00:32:34,443 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-14 00:32:34,444 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-14 00:32:34,445 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-14 00:32:34,445 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-14 00:32:34,452 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:32:34" (1/1) ... [2024-10-14 00:32:34,465 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:32:34" (1/1) ... [2024-10-14 00:32:34,492 INFO L138 Inliner]: procedures = 18, calls = 63, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 150 [2024-10-14 00:32:34,493 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-14 00:32:34,494 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-14 00:32:34,494 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-14 00:32:34,494 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-14 00:32:34,505 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:32:34" (1/1) ... [2024-10-14 00:32:34,506 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:32:34" (1/1) ... [2024-10-14 00:32:34,510 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:32:34" (1/1) ... [2024-10-14 00:32:34,529 INFO L175 MemorySlicer]: Split 30 memory accesses to 5 slices as follows [2, 8, 6, 8, 6]. 27 percent of accesses are in the largest equivalence class. The 22 initializations are split as follows [2, 5, 5, 5, 5]. The 0 writes are split as follows [0, 0, 0, 0, 0]. [2024-10-14 00:32:34,531 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:32:34" (1/1) ... [2024-10-14 00:32:34,531 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:32:34" (1/1) ... [2024-10-14 00:32:34,540 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:32:34" (1/1) ... [2024-10-14 00:32:34,542 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:32:34" (1/1) ... [2024-10-14 00:32:34,544 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:32:34" (1/1) ... [2024-10-14 00:32:34,545 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:32:34" (1/1) ... [2024-10-14 00:32:34,547 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-14 00:32:34,548 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-14 00:32:34,548 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-14 00:32:34,548 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-14 00:32:34,549 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:32:34" (1/1) ... [2024-10-14 00:32:34,555 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 00:32:34,566 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 00:32:34,584 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) [2024-10-14 00:32:34,587 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 [2024-10-14 00:32:34,632 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-14 00:32:34,632 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-14 00:32:34,632 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-14 00:32:34,632 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-14 00:32:34,633 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-10-14 00:32:34,633 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-10-14 00:32:34,633 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-14 00:32:34,633 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#0 [2024-10-14 00:32:34,635 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#1 [2024-10-14 00:32:34,635 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#2 [2024-10-14 00:32:34,635 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#3 [2024-10-14 00:32:34,635 INFO L130 BoogieDeclarations]: Found specification of procedure read~real#4 [2024-10-14 00:32:34,635 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-14 00:32:34,636 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-14 00:32:34,636 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#0 [2024-10-14 00:32:34,636 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#1 [2024-10-14 00:32:34,636 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#2 [2024-10-14 00:32:34,636 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#3 [2024-10-14 00:32:34,637 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real#4 [2024-10-14 00:32:34,637 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-14 00:32:34,726 INFO L238 CfgBuilder]: Building ICFG [2024-10-14 00:32:34,729 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-14 00:32:34,946 INFO L? ?]: Removed 15 outVars from TransFormulas that were not future-live. [2024-10-14 00:32:34,946 INFO L287 CfgBuilder]: Performing block encoding [2024-10-14 00:32:34,974 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-14 00:32:34,976 INFO L314 CfgBuilder]: Removed 0 assume(true) statements. [2024-10-14 00:32:34,976 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 12:32:34 BoogieIcfgContainer [2024-10-14 00:32:34,976 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-14 00:32:34,978 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-14 00:32:34,979 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-14 00:32:34,982 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-14 00:32:34,982 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 12:32:34" (1/3) ... [2024-10-14 00:32:34,983 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@138fa51f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 12:32:34, skipping insertion in model container [2024-10-14 00:32:34,983 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:32:34" (2/3) ... [2024-10-14 00:32:34,983 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@138fa51f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 12:32:34, skipping insertion in model container [2024-10-14 00:32:34,983 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 12:32:34" (3/3) ... [2024-10-14 00:32:34,985 INFO L112 eAbstractionObserver]: Analyzing ICFG interpolation2.c.v+cfa-reducer.c [2024-10-14 00:32:35,004 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-14 00:32:35,005 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-14 00:32:35,072 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 00:32:35,079 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;@59af9a65, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 00:32:35,079 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-14 00:32:35,083 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 14 states have (on average 1.6428571428571428) internal successors, (23), 15 states have internal predecessors, (23), 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) [2024-10-14 00:32:35,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-10-14 00:32:35,090 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 00:32:35,091 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 00:32:35,092 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 00:32:35,096 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 00:32:35,097 INFO L85 PathProgramCache]: Analyzing trace with hash 1392335393, now seen corresponding path program 1 times [2024-10-14 00:32:35,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 00:32:35,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798522205] [2024-10-14 00:32:35,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 00:32:35,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 00:32:35,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 00:32:35,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 00:32:35,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 00:32:35,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798522205] [2024-10-14 00:32:35,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [798522205] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 00:32:35,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 00:32:35,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-14 00:32:35,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867189750] [2024-10-14 00:32:35,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 00:32:35,398 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 00:32:35,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 00:32:35,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 00:32:35,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-14 00:32:35,419 INFO L87 Difference]: Start difference. First operand has 16 states, 14 states have (on average 1.6428571428571428) internal successors, (23), 15 states have internal predecessors, (23), 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 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 00:32:35,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 00:32:35,472 INFO L93 Difference]: Finished difference Result 22 states and 29 transitions. [2024-10-14 00:32:35,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 00:32:35,475 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2024-10-14 00:32:35,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 00:32:35,481 INFO L225 Difference]: With dead ends: 22 [2024-10-14 00:32:35,481 INFO L226 Difference]: Without dead ends: 14 [2024-10-14 00:32:35,483 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-14 00:32:35,486 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 0 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-14 00:32:35,487 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 59 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-14 00:32:35,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2024-10-14 00:32:35,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2024-10-14 00:32:35,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 00:32:35,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2024-10-14 00:32:35,509 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 11 [2024-10-14 00:32:35,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 00:32:35,509 INFO L471 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2024-10-14 00:32:35,510 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 00:32:35,510 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2024-10-14 00:32:35,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-10-14 00:32:35,510 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 00:32:35,510 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 00:32:35,510 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-14 00:32:35,511 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 00:32:35,512 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 00:32:35,512 INFO L85 PathProgramCache]: Analyzing trace with hash 1409346054, now seen corresponding path program 1 times [2024-10-14 00:32:35,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 00:32:35,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868516569] [2024-10-14 00:32:35,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 00:32:35,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 00:32:35,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 00:32:35,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 00:32:35,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 00:32:35,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868516569] [2024-10-14 00:32:35,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868516569] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 00:32:35,619 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 00:32:35,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 00:32:35,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392536650] [2024-10-14 00:32:35,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 00:32:35,621 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 00:32:35,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 00:32:35,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 00:32:35,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 00:32:35,623 INFO L87 Difference]: Start difference. First operand 14 states and 16 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 00:32:35,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 00:32:35,643 INFO L93 Difference]: Finished difference Result 32 states and 36 transitions. [2024-10-14 00:32:35,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 00:32:35,645 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2024-10-14 00:32:35,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 00:32:35,646 INFO L225 Difference]: With dead ends: 32 [2024-10-14 00:32:35,646 INFO L226 Difference]: Without dead ends: 24 [2024-10-14 00:32:35,646 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 00:32:35,648 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 10 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-14 00:32:35,649 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 24 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-14 00:32:35,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2024-10-14 00:32:35,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 15. [2024-10-14 00:32:35,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 00:32:35,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2024-10-14 00:32:35,657 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 11 [2024-10-14 00:32:35,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 00:32:35,658 INFO L471 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2024-10-14 00:32:35,658 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 00:32:35,658 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2024-10-14 00:32:35,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-10-14 00:32:35,659 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 00:32:35,659 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 00:32:35,660 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-14 00:32:35,660 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 00:32:35,660 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 00:32:35,662 INFO L85 PathProgramCache]: Analyzing trace with hash 1916271840, now seen corresponding path program 1 times [2024-10-14 00:32:35,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 00:32:35,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585544945] [2024-10-14 00:32:35,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 00:32:35,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 00:32:35,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-14 00:32:35,693 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-14 00:32:35,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-14 00:32:35,746 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-14 00:32:35,746 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-14 00:32:35,748 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-10-14 00:32:35,749 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-14 00:32:35,752 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2024-10-14 00:32:35,778 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-10-14 00:32:35,781 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.10 12:32:35 BoogieIcfgContainer [2024-10-14 00:32:35,782 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-10-14 00:32:35,784 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-14 00:32:35,784 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-14 00:32:35,785 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-14 00:32:35,785 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 12:32:34" (3/4) ... [2024-10-14 00:32:35,787 INFO L142 WitnessPrinter]: No result that supports witness generation found [2024-10-14 00:32:35,789 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-14 00:32:35,789 INFO L158 Benchmark]: Toolchain (without parser) took 1657.21ms. Allocated memory is still 140.5MB. Free memory was 86.1MB in the beginning and 61.4MB in the end (delta: 24.7MB). Peak memory consumption was 25.3MB. Max. memory is 16.1GB. [2024-10-14 00:32:35,790 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 140.5MB. Free memory is still 101.2MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-14 00:32:35,790 INFO L158 Benchmark]: CACSL2BoogieTranslator took 309.34ms. Allocated memory is still 140.5MB. Free memory was 86.1MB in the beginning and 73.9MB in the end (delta: 12.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-10-14 00:32:35,792 INFO L158 Benchmark]: Boogie Procedure Inliner took 48.58ms. Allocated memory is still 140.5MB. Free memory was 73.6MB in the beginning and 71.8MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-14 00:32:35,792 INFO L158 Benchmark]: Boogie Preprocessor took 53.16ms. Allocated memory is still 140.5MB. Free memory was 71.8MB in the beginning and 69.4MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-14 00:32:35,794 INFO L158 Benchmark]: RCFGBuilder took 428.56ms. Allocated memory is still 140.5MB. Free memory was 69.4MB in the beginning and 106.3MB in the end (delta: -36.9MB). Peak memory consumption was 14.9MB. Max. memory is 16.1GB. [2024-10-14 00:32:35,794 INFO L158 Benchmark]: TraceAbstraction took 803.15ms. Allocated memory is still 140.5MB. Free memory was 105.5MB in the beginning and 61.4MB in the end (delta: 44.0MB). Peak memory consumption was 44.0MB. Max. memory is 16.1GB. [2024-10-14 00:32:35,794 INFO L158 Benchmark]: Witness Printer took 5.06ms. Allocated memory is still 140.5MB. Free memory is still 61.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-14 00:32:35,797 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 140.5MB. Free memory is still 101.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 309.34ms. Allocated memory is still 140.5MB. Free memory was 86.1MB in the beginning and 73.9MB in the end (delta: 12.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 48.58ms. Allocated memory is still 140.5MB. Free memory was 73.6MB in the beginning and 71.8MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 53.16ms. Allocated memory is still 140.5MB. Free memory was 71.8MB in the beginning and 69.4MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 428.56ms. Allocated memory is still 140.5MB. Free memory was 69.4MB in the beginning and 106.3MB in the end (delta: -36.9MB). Peak memory consumption was 14.9MB. Max. memory is 16.1GB. * TraceAbstraction took 803.15ms. Allocated memory is still 140.5MB. Free memory was 105.5MB in the beginning and 61.4MB in the end (delta: 44.0MB). Peak memory consumption was 44.0MB. Max. memory is 16.1GB. * Witness Printer took 5.06ms. Allocated memory is still 140.5MB. Free memory is still 61.4MB. 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: 53]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 35, overapproximation of someBinaryDOUBLEComparisonOperation at line 40, overapproximation of to_real at line 18, overapproximation of someBinaryArithmeticFLOAToperation at line 38. Possible FailurePath: [L1] int __return_main; [L12] int __return_129; [L15] int main__i; [L16] float main__z; [L17] float main__t; [L18] float main__min[5] = { 5, 10, 12, 30, 150 }; [L18] float main__min[5] = { 5, 10, 12, 30, 150 }; [L18] float main__min[5] = { 5, 10, 12, 30, 150 }; [L18] float main__min[5] = { 5, 10, 12, 30, 150 }; [L18] float main__min[5] = { 5, 10, 12, 30, 150 }; [L18] float main__min[5] = { 5, 10, 12, 30, 150 }; [L19] float main__max[5] = { 10, 12, 30, 150, 300 }; [L19] float main__max[5] = { 10, 12, 30, 150, 300 }; [L19] float main__max[5] = { 10, 12, 30, 150, 300 }; [L19] float main__max[5] = { 10, 12, 30, 150, 300 }; [L19] float main__max[5] = { 10, 12, 30, 150, 300 }; [L19] float main__max[5] = { 10, 12, 30, 150, 300 }; [L20] float main__org[5] = { 1, 5, -10, 30, 20 }; [L20] float main__org[5] = { 1, 5, -10, 30, 20 }; [L20] float main__org[5] = { 1, 5, -10, 30, 20 }; [L20] float main__org[5] = { 1, 5, -10, 30, 20 }; [L20] float main__org[5] = { 1, 5, -10, 30, 20 }; [L20] float main__org[5] = { 1, 5, -10, 30, 20 }; [L21] float main__slope[5] = { 4, -15, 40, -10, 0 }; [L21] float main__slope[5] = { 4, -15, 40, -10, 0 }; [L21] float main__slope[5] = { 4, -15, 40, -10, 0 }; [L21] float main__slope[5] = { 4, -15, 40, -10, 0 }; [L21] float main__slope[5] = { 4, -15, 40, -10, 0 }; [L21] float main__slope[5] = { 4, -15, 40, -10, 0 }; [L22] main__t = __VERIFIER_nondet_float() [L23] int main____CPAchecker_TMP_0; [L24] EXPR main__min[0] VAL [__return_129=0, __return_main=0] [L24] COND TRUE main__t >= (main__min[0]) [L26] EXPR main__max[4UL] VAL [__return_129=0, __return_main=0] [L26] COND TRUE main__t <= (main__max[4UL]) [L28] main____CPAchecker_TMP_0 = 1 VAL [__return_129=0, __return_main=0, main____CPAchecker_TMP_0=1, main__max={6:0}] [L29] COND TRUE main____CPAchecker_TMP_0 != 0 [L31] main__i = 0 VAL [__return_129=0, __return_main=0, main__i=0, main__max={6:0}] [L33] COND TRUE main__i < 5UL [L35] EXPR main__max[main__i] VAL [__return_129=0, __return_main=0] [L35] COND TRUE main__t <= (main__max[main__i]) [L38] EXPR main__org[main__i] [L38] EXPR main__slope[main__i] [L38] EXPR main__min[main__i] [L38] EXPR main__max[main__i] [L38] EXPR main__min[main__i] [L38] main__z = (main__org[main__i]) + (((main__slope[main__i]) * (main__t - (main__min[main__i]))) / ((main__max[main__i]) - (main__min[main__i]))) [L39] int main____CPAchecker_TMP_1; VAL [__return_129=0, __return_main=0, main__i=0, main__max={6:0}] [L40] COND FALSE !(main__z >= -10.0) VAL [__return_129=0, __return_main=0, main__i=0, main__max={6:0}] [L66] main____CPAchecker_TMP_1 = 0 VAL [__return_129=0, __return_main=0, main____CPAchecker_TMP_1=0, main__i=0, main__max={6:0}] [L47] int __tmp_1; [L48] __tmp_1 = main____CPAchecker_TMP_1 [L49] int __VERIFIER_assert__cond; [L50] __VERIFIER_assert__cond = __tmp_1 VAL [__VERIFIER_assert__cond=0, __return_129=0, __return_main=0, main__i=0, main__max={6:0}] [L51] COND TRUE __VERIFIER_assert__cond == 0 VAL [__return_129=0, __return_main=0, main__i=0, main__max={6:0}] [L53] reach_error() VAL [__return_129=0, __return_main=0, main__i=0, main__max={6:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 16 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.7s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 10 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 10 mSDsluCounter, 83 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 54 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 30 IncrementalHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 29 mSDtfsCounter, 30 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=16occurred in iteration=0, InterpolantAutomatonStates: 8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 9 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 34 NumberOfCodeBlocks, 34 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 20 ConstructedInterpolants, 0 QuantifiedInterpolants, 30 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2024-10-14 00:32:35,827 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/current/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 /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/interpolation2.c.v+cfa-reducer.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 a4b21fc033f5ea5cebc3419535848f3ce92b08a7177da8a580c018ae56dea99e --- Real Ultimate output --- This is Ultimate 0.2.5-wip.fs.cvc5-61a6796-m [2024-10-14 00:32:38,054 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-14 00:32:38,126 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2024-10-14 00:32:38,133 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-14 00:32:38,134 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-14 00:32:38,169 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-14 00:32:38,169 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-14 00:32:38,170 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-14 00:32:38,170 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-14 00:32:38,171 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-14 00:32:38,171 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-14 00:32:38,172 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-14 00:32:38,172 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-14 00:32:38,174 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-14 00:32:38,174 INFO L153 SettingsManager]: * Use SBE=true [2024-10-14 00:32:38,175 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-14 00:32:38,175 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-14 00:32:38,175 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-14 00:32:38,176 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-14 00:32:38,176 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-14 00:32:38,179 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-14 00:32:38,180 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-14 00:32:38,181 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-14 00:32:38,181 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-14 00:32:38,181 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-10-14 00:32:38,181 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-14 00:32:38,181 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-10-14 00:32:38,181 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-14 00:32:38,182 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-14 00:32:38,182 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-14 00:32:38,182 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-14 00:32:38,182 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-14 00:32:38,182 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-14 00:32:38,183 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-14 00:32:38,183 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 00:32:38,183 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-14 00:32:38,183 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-14 00:32:38,192 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-14 00:32:38,193 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-10-14 00:32:38,193 INFO L153 SettingsManager]: * Command for external solver=cvc5 --incremental --print-success --lang smt [2024-10-14 00:32:38,194 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-14 00:32:38,194 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-14 00:32:38,194 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-14 00:32:38,195 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-14 00:32:38,195 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2024-10-14 00:32:38,195 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a4b21fc033f5ea5cebc3419535848f3ce92b08a7177da8a580c018ae56dea99e [2024-10-14 00:32:38,498 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-14 00:32:38,519 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-14 00:32:38,522 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-14 00:32:38,524 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-14 00:32:38,525 INFO L274 PluginConnector]: CDTParser initialized [2024-10-14 00:32:38,527 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/interpolation2.c.v+cfa-reducer.c [2024-10-14 00:32:40,062 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-14 00:32:40,258 INFO L384 CDTParser]: Found 1 translation units. [2024-10-14 00:32:40,259 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/interpolation2.c.v+cfa-reducer.c [2024-10-14 00:32:40,266 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/030ac918f/0add4a9fac214cd39ed0cd8c7f73a280/FLAGa01506c68 [2024-10-14 00:32:40,624 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/030ac918f/0add4a9fac214cd39ed0cd8c7f73a280 [2024-10-14 00:32:40,625 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-14 00:32:40,627 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-14 00:32:40,628 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-14 00:32:40,628 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-14 00:32:40,635 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-14 00:32:40,636 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 12:32:40" (1/1) ... [2024-10-14 00:32:40,637 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6fb1cbe0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:32:40, skipping insertion in model container [2024-10-14 00:32:40,637 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 12:32:40" (1/1) ... [2024-10-14 00:32:40,657 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-14 00:32:40,853 WARN L248 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-benchs/interpolation2.c.v+cfa-reducer.c[1463,1476] [2024-10-14 00:32:40,866 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 00:32:40,885 INFO L200 MainTranslator]: Completed pre-run [2024-10-14 00:32:40,916 WARN L248 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-benchs/interpolation2.c.v+cfa-reducer.c[1463,1476] [2024-10-14 00:32:40,920 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 00:32:40,943 INFO L204 MainTranslator]: Completed translation [2024-10-14 00:32:40,944 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:32:40 WrapperNode [2024-10-14 00:32:40,944 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-14 00:32:40,946 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-14 00:32:40,946 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-14 00:32:40,946 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-14 00:32:40,952 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:32:40" (1/1) ... [2024-10-14 00:32:40,967 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:32:40" (1/1) ... [2024-10-14 00:32:40,995 INFO L138 Inliner]: procedures = 19, calls = 63, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 151 [2024-10-14 00:32:40,999 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-14 00:32:41,000 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-14 00:32:41,000 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-14 00:32:41,000 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-14 00:32:41,011 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:32:40" (1/1) ... [2024-10-14 00:32:41,012 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:32:40" (1/1) ... [2024-10-14 00:32:41,016 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:32:40" (1/1) ... [2024-10-14 00:32:41,039 INFO L175 MemorySlicer]: Split 30 memory accesses to 5 slices as follows [2, 6, 8, 8, 6]. 27 percent of accesses are in the largest equivalence class. The 22 initializations are split as follows [2, 5, 5, 5, 5]. The 0 writes are split as follows [0, 0, 0, 0, 0]. [2024-10-14 00:32:41,039 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:32:40" (1/1) ... [2024-10-14 00:32:41,039 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:32:40" (1/1) ... [2024-10-14 00:32:41,055 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:32:40" (1/1) ... [2024-10-14 00:32:41,057 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:32:40" (1/1) ... [2024-10-14 00:32:41,062 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:32:40" (1/1) ... [2024-10-14 00:32:41,068 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:32:40" (1/1) ... [2024-10-14 00:32:41,075 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-14 00:32:41,076 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-14 00:32:41,076 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-14 00:32:41,076 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-14 00:32:41,077 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:32:40" (1/1) ... [2024-10-14 00:32:41,085 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 00:32:41,095 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 00:32:41,110 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) [2024-10-14 00:32:41,128 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 [2024-10-14 00:32:41,175 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-14 00:32:41,176 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#0 [2024-10-14 00:32:41,177 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#1 [2024-10-14 00:32:41,177 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#2 [2024-10-14 00:32:41,177 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#3 [2024-10-14 00:32:41,178 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4#4 [2024-10-14 00:32:41,178 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-10-14 00:32:41,178 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-10-14 00:32:41,178 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2024-10-14 00:32:41,178 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#3 [2024-10-14 00:32:41,179 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#4 [2024-10-14 00:32:41,179 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-14 00:32:41,179 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#0 [2024-10-14 00:32:41,179 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#1 [2024-10-14 00:32:41,179 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#2 [2024-10-14 00:32:41,179 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#3 [2024-10-14 00:32:41,179 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4#4 [2024-10-14 00:32:41,179 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-14 00:32:41,180 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-14 00:32:41,180 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-14 00:32:41,289 INFO L238 CfgBuilder]: Building ICFG [2024-10-14 00:32:41,291 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-14 00:32:45,870 INFO L? ?]: Removed 19 outVars from TransFormulas that were not future-live. [2024-10-14 00:32:45,870 INFO L287 CfgBuilder]: Performing block encoding [2024-10-14 00:32:45,934 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-14 00:32:45,935 INFO L314 CfgBuilder]: Removed 0 assume(true) statements. [2024-10-14 00:32:45,935 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 12:32:45 BoogieIcfgContainer [2024-10-14 00:32:45,935 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-14 00:32:45,938 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-14 00:32:45,939 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-14 00:32:45,942 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-14 00:32:45,942 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 12:32:40" (1/3) ... [2024-10-14 00:32:45,943 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bc88211 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 12:32:45, skipping insertion in model container [2024-10-14 00:32:45,943 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 12:32:40" (2/3) ... [2024-10-14 00:32:45,943 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bc88211 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 12:32:45, skipping insertion in model container [2024-10-14 00:32:45,944 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 12:32:45" (3/3) ... [2024-10-14 00:32:45,945 INFO L112 eAbstractionObserver]: Analyzing ICFG interpolation2.c.v+cfa-reducer.c [2024-10-14 00:32:45,962 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-14 00:32:45,962 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-14 00:32:46,021 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 00:32:46,026 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;@25f39eda, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 00:32:46,027 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-14 00:32:46,031 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 14 states have (on average 1.6428571428571428) internal successors, (23), 15 states have internal predecessors, (23), 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) [2024-10-14 00:32:46,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-10-14 00:32:46,036 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 00:32:46,036 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 00:32:46,037 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 00:32:46,041 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 00:32:46,041 INFO L85 PathProgramCache]: Analyzing trace with hash 1392335393, now seen corresponding path program 1 times [2024-10-14 00:32:46,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 00:32:46,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2037150606] [2024-10-14 00:32:46,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 00:32:46,055 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 [2024-10-14 00:32:46,055 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 00:32:46,058 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) [2024-10-14 00:32:46,059 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 [2024-10-14 00:32:46,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 00:32:46,409 INFO L255 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-14 00:32:46,413 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 00:32:46,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 00:32:46,496 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 00:32:46,497 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 00:32:46,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2037150606] [2024-10-14 00:32:46,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2037150606] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 00:32:46,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 00:32:46,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 00:32:46,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130074810] [2024-10-14 00:32:46,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 00:32:46,505 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 00:32:46,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 00:32:46,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 00:32:46,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 00:32:46,532 INFO L87 Difference]: Start difference. First operand has 16 states, 14 states have (on average 1.6428571428571428) internal successors, (23), 15 states have internal predecessors, (23), 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 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 00:32:50,780 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-10-14 00:32:54,787 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-10-14 00:32:58,995 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-10-14 00:32:58,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 00:32:58,997 INFO L93 Difference]: Finished difference Result 29 states and 40 transitions. [2024-10-14 00:32:59,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 00:32:59,050 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2024-10-14 00:32:59,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 00:32:59,056 INFO L225 Difference]: With dead ends: 29 [2024-10-14 00:32:59,056 INFO L226 Difference]: Without dead ends: 17 [2024-10-14 00:32:59,058 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 00:32:59,061 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 2 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.4s IncrementalHoareTripleChecker+Time [2024-10-14 00:32:59,062 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 33 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 3 Unknown, 0 Unchecked, 12.4s Time] [2024-10-14 00:32:59,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2024-10-14 00:32:59,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 15. [2024-10-14 00:32:59,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 14 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) [2024-10-14 00:32:59,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 18 transitions. [2024-10-14 00:32:59,087 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 18 transitions. Word has length 11 [2024-10-14 00:32:59,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 00:32:59,087 INFO L471 AbstractCegarLoop]: Abstraction has 15 states and 18 transitions. [2024-10-14 00:32:59,087 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 00:32:59,088 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 18 transitions. [2024-10-14 00:32:59,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-10-14 00:32:59,088 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 00:32:59,088 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 00:32:59,105 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 [2024-10-14 00:32:59,293 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 [2024-10-14 00:32:59,294 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 00:32:59,294 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 00:32:59,294 INFO L85 PathProgramCache]: Analyzing trace with hash 1899261179, now seen corresponding path program 1 times [2024-10-14 00:32:59,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 00:32:59,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [833767808] [2024-10-14 00:32:59,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 00:32:59,295 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 [2024-10-14 00:32:59,295 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 00:32:59,298 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) [2024-10-14 00:32:59,316 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 [2024-10-14 00:32:59,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 00:32:59,656 INFO L255 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-14 00:32:59,658 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 00:32:59,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 00:32:59,793 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 00:32:59,793 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-14 00:32:59,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [833767808] [2024-10-14 00:32:59,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [833767808] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 00:32:59,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 00:32:59,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-14 00:32:59,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951745251] [2024-10-14 00:32:59,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 00:32:59,795 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 00:32:59,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-14 00:32:59,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 00:32:59,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 00:32:59,796 INFO L87 Difference]: Start difference. First operand 15 states and 18 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 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) [2024-10-14 00:33:04,005 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-10-14 00:33:04,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 00:33:04,103 INFO L93 Difference]: Finished difference Result 19 states and 21 transitions. [2024-10-14 00:33:04,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 00:33:04,104 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 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 [2024-10-14 00:33:04,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 00:33:04,104 INFO L225 Difference]: With dead ends: 19 [2024-10-14 00:33:04,104 INFO L226 Difference]: Without dead ends: 15 [2024-10-14 00:33:04,105 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 00:33:04,105 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 0 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2024-10-14 00:33:04,106 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 41 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 1 Unknown, 0 Unchecked, 4.3s Time] [2024-10-14 00:33:04,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2024-10-14 00:33:04,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2024-10-14 00:33:04,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 00:33:04,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2024-10-14 00:33:04,109 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 12 [2024-10-14 00:33:04,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 00:33:04,110 INFO L471 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2024-10-14 00:33:04,110 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 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) [2024-10-14 00:33:04,110 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2024-10-14 00:33:04,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-10-14 00:33:04,111 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 00:33:04,111 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 00:33:04,123 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 [2024-10-14 00:33:04,311 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 [2024-10-14 00:33:04,312 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-14 00:33:04,312 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 00:33:04,312 INFO L85 PathProgramCache]: Analyzing trace with hash 1916271840, now seen corresponding path program 1 times [2024-10-14 00:33:04,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-14 00:33:04,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1914560056] [2024-10-14 00:33:04,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 00:33:04,313 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 [2024-10-14 00:33:04,313 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-10-14 00:33:04,316 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) [2024-10-14 00:33:04,317 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 [2024-10-14 00:33:04,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 00:33:04,803 INFO L255 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-10-14 00:33:04,806 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 00:33:08,799 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 153 treesize of output 105 [2024-10-14 00:33:08,827 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 108 treesize of output 84 [2024-10-14 00:33:08,956 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-14 00:33:08,957 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 140 treesize of output 92 [2024-10-14 00:33:08,986 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 84 treesize of output 60