./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/square_8+soft_float_1-2a.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 551b0097 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/square_8+soft_float_1-2a.c.cil.c -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/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 be176f230c0ddf2a166ae209d5d0fb467abe0ece694096a2cf73b073fb0117ce --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-09 06:13:20,609 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-09 06:13:20,660 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-01-09 06:13:20,663 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-09 06:13:20,667 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-09 06:13:20,690 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-09 06:13:20,691 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-09 06:13:20,691 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-09 06:13:20,691 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-09 06:13:20,691 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-09 06:13:20,692 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-09 06:13:20,692 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-09 06:13:20,692 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-09 06:13:20,692 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-09 06:13:20,692 INFO L153 SettingsManager]: * Use SBE=true [2025-01-09 06:13:20,692 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-09 06:13:20,693 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-01-09 06:13:20,693 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-09 06:13:20,693 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-09 06:13:20,693 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-09 06:13:20,693 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-09 06:13:20,693 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-01-09 06:13:20,693 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-09 06:13:20,693 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-01-09 06:13:20,693 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-09 06:13:20,694 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-01-09 06:13:20,694 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-09 06:13:20,694 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-09 06:13:20,694 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-09 06:13:20,694 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 06:13:20,694 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 06:13:20,694 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 06:13:20,694 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 06:13:20,694 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-09 06:13:20,694 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 06:13:20,694 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 06:13:20,694 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 06:13:20,694 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 06:13:20,694 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-09 06:13:20,694 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-09 06:13:20,694 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-01-09 06:13:20,694 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-01-09 06:13:20,694 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-09 06:13:20,695 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-09 06:13:20,695 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-09 06:13:20,695 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-09 06:13:20,695 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-09 06:13:20,695 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-09 06:13:20,695 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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-jdk21/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 -> be176f230c0ddf2a166ae209d5d0fb467abe0ece694096a2cf73b073fb0117ce [2025-01-09 06:13:20,930 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-09 06:13:20,938 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-09 06:13:20,941 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-09 06:13:20,942 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-09 06:13:20,942 INFO L274 PluginConnector]: CDTParser initialized [2025-01-09 06:13:20,943 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/square_8+soft_float_1-2a.c.cil.c [2025-01-09 06:13:22,208 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/708ec8b5a/a3924ce7455645e0be546c4e08b26eff/FLAG306552c99 [2025-01-09 06:13:22,493 INFO L384 CDTParser]: Found 1 translation units. [2025-01-09 06:13:22,494 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/combinations/square_8+soft_float_1-2a.c.cil.c [2025-01-09 06:13:22,500 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/708ec8b5a/a3924ce7455645e0be546c4e08b26eff/FLAG306552c99 [2025-01-09 06:13:22,518 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/708ec8b5a/a3924ce7455645e0be546c4e08b26eff [2025-01-09 06:13:22,520 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-09 06:13:22,521 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-09 06:13:22,523 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-09 06:13:22,523 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-09 06:13:22,527 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-09 06:13:22,527 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 06:13:22" (1/1) ... [2025-01-09 06:13:22,528 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b429eef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 06:13:22, skipping insertion in model container [2025-01-09 06:13:22,528 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 06:13:22" (1/1) ... [2025-01-09 06:13:22,550 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-09 06:13:22,677 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/combinations/square_8+soft_float_1-2a.c.cil.c[1995,2008] [2025-01-09 06:13:22,682 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/combinations/square_8+soft_float_1-2a.c.cil.c[2389,2402] [2025-01-09 06:13:22,721 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 06:13:22,730 INFO L200 MainTranslator]: Completed pre-run [2025-01-09 06:13:22,744 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/combinations/square_8+soft_float_1-2a.c.cil.c[1995,2008] [2025-01-09 06:13:22,745 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/combinations/square_8+soft_float_1-2a.c.cil.c[2389,2402] [2025-01-09 06:13:22,779 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 06:13:22,790 INFO L204 MainTranslator]: Completed translation [2025-01-09 06:13:22,792 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 06:13:22 WrapperNode [2025-01-09 06:13:22,793 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-09 06:13:22,793 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-09 06:13:22,794 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-09 06:13:22,795 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-09 06:13:22,800 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 06:13:22" (1/1) ... [2025-01-09 06:13:22,807 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 06:13:22" (1/1) ... [2025-01-09 06:13:22,832 INFO L138 Inliner]: procedures = 27, calls = 20, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 211 [2025-01-09 06:13:22,832 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-09 06:13:22,833 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-09 06:13:22,833 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-09 06:13:22,833 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-09 06:13:22,844 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 06:13:22" (1/1) ... [2025-01-09 06:13:22,844 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 06:13:22" (1/1) ... [2025-01-09 06:13:22,846 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 06:13:22" (1/1) ... [2025-01-09 06:13:22,875 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-01-09 06:13:22,876 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 06:13:22" (1/1) ... [2025-01-09 06:13:22,876 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 06:13:22" (1/1) ... [2025-01-09 06:13:22,881 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 06:13:22" (1/1) ... [2025-01-09 06:13:22,889 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 06:13:22" (1/1) ... [2025-01-09 06:13:22,893 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 06:13:22" (1/1) ... [2025-01-09 06:13:22,898 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 06:13:22" (1/1) ... [2025-01-09 06:13:22,899 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 06:13:22" (1/1) ... [2025-01-09 06:13:22,901 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-09 06:13:22,901 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-09 06:13:22,902 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-09 06:13:22,902 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-09 06:13:22,903 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 06:13:22" (1/1) ... [2025-01-09 06:13:22,914 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 06:13:22,925 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 06:13:22,941 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-01-09 06:13:22,946 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-01-09 06:13:22,960 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-09 06:13:22,960 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2025-01-09 06:13:22,960 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2025-01-09 06:13:22,960 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-01-09 06:13:22,960 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-09 06:13:22,960 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-09 06:13:22,960 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2025-01-09 06:13:22,960 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2025-01-09 06:13:23,017 INFO L234 CfgBuilder]: Building ICFG [2025-01-09 06:13:23,018 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-09 06:13:23,374 INFO L? ?]: Removed 81 outVars from TransFormulas that were not future-live. [2025-01-09 06:13:23,375 INFO L283 CfgBuilder]: Performing block encoding [2025-01-09 06:13:23,381 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-09 06:13:23,382 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2025-01-09 06:13:23,382 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 06:13:23 BoogieIcfgContainer [2025-01-09 06:13:23,382 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-09 06:13:23,383 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-09 06:13:23,384 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-09 06:13:23,387 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-09 06:13:23,387 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.01 06:13:22" (1/3) ... [2025-01-09 06:13:23,388 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@730f8ffc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 06:13:23, skipping insertion in model container [2025-01-09 06:13:23,388 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 06:13:22" (2/3) ... [2025-01-09 06:13:23,388 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@730f8ffc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 06:13:23, skipping insertion in model container [2025-01-09 06:13:23,388 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 06:13:23" (3/3) ... [2025-01-09 06:13:23,390 INFO L128 eAbstractionObserver]: Analyzing ICFG square_8+soft_float_1-2a.c.cil.c [2025-01-09 06:13:23,399 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-09 06:13:23,400 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG square_8+soft_float_1-2a.c.cil.c that has 3 procedures, 103 locations, 1 initial locations, 2 loop locations, and 2 error locations. [2025-01-09 06:13:23,442 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-09 06:13:23,452 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;@286ee07d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-09 06:13:23,452 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2025-01-09 06:13:23,455 INFO L276 IsEmpty]: Start isEmpty. Operand has 103 states, 90 states have (on average 1.5666666666666667) internal successors, (141), 94 states have internal predecessors, (141), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2025-01-09 06:13:23,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2025-01-09 06:13:23,459 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 06:13:23,459 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-01-09 06:13:23,460 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 06:13:23,463 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 06:13:23,464 INFO L85 PathProgramCache]: Analyzing trace with hash -1510885037, now seen corresponding path program 1 times [2025-01-09 06:13:23,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 06:13:23,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137788845] [2025-01-09 06:13:23,471 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 06:13:23,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 06:13:23,515 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-01-09 06:13:23,522 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-01-09 06:13:23,522 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 06:13:23,522 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 06:13:23,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 06:13:23,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 06:13:23,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137788845] [2025-01-09 06:13:23,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137788845] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 06:13:23,544 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 06:13:23,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-01-09 06:13:23,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534563568] [2025-01-09 06:13:23,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 06:13:23,548 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-01-09 06:13:23,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 06:13:23,558 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-01-09 06:13:23,559 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-01-09 06:13:23,560 INFO L87 Difference]: Start difference. First operand has 103 states, 90 states have (on average 1.5666666666666667) internal successors, (141), 94 states have internal predecessors, (141), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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) [2025-01-09 06:13:23,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 06:13:23,588 INFO L93 Difference]: Finished difference Result 201 states and 314 transitions. [2025-01-09 06:13:23,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-01-09 06:13:23,589 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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 7 [2025-01-09 06:13:23,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 06:13:23,597 INFO L225 Difference]: With dead ends: 201 [2025-01-09 06:13:23,597 INFO L226 Difference]: Without dead ends: 96 [2025-01-09 06:13:23,603 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-01-09 06:13:23,605 INFO L435 NwaCegarLoop]: 149 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 06:13:23,605 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 06:13:23,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2025-01-09 06:13:23,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2025-01-09 06:13:23,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 84 states have (on average 1.4880952380952381) internal successors, (125), 87 states have internal predecessors, (125), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2025-01-09 06:13:23,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 140 transitions. [2025-01-09 06:13:23,641 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 140 transitions. Word has length 7 [2025-01-09 06:13:23,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 06:13:23,641 INFO L471 AbstractCegarLoop]: Abstraction has 96 states and 140 transitions. [2025-01-09 06:13:23,641 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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) [2025-01-09 06:13:23,641 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 140 transitions. [2025-01-09 06:13:23,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2025-01-09 06:13:23,642 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 06:13:23,642 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-01-09 06:13:23,642 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-01-09 06:13:23,642 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 06:13:23,643 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 06:13:23,643 INFO L85 PathProgramCache]: Analyzing trace with hash -1510825455, now seen corresponding path program 1 times [2025-01-09 06:13:23,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 06:13:23,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143550739] [2025-01-09 06:13:23,643 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 06:13:23,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 06:13:23,647 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-01-09 06:13:23,653 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-01-09 06:13:23,653 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 06:13:23,653 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-01-09 06:13:23,654 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-01-09 06:13:23,655 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-01-09 06:13:23,658 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-01-09 06:13:23,658 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 06:13:23,658 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-01-09 06:13:23,671 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-01-09 06:13:23,674 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-01-09 06:13:23,676 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2025-01-09 06:13:23,677 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2025-01-09 06:13:23,678 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-01-09 06:13:23,680 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2025-01-09 06:13:23,688 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-01-09 06:13:23,691 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.01 06:13:23 BoogieIcfgContainer [2025-01-09 06:13:23,692 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-01-09 06:13:23,692 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-01-09 06:13:23,693 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-01-09 06:13:23,693 INFO L274 PluginConnector]: Witness Printer initialized [2025-01-09 06:13:23,693 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 06:13:23" (3/4) ... [2025-01-09 06:13:23,695 INFO L149 WitnessPrinter]: No result that supports witness generation found [2025-01-09 06:13:23,695 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-01-09 06:13:23,696 INFO L158 Benchmark]: Toolchain (without parser) took 1174.38ms. Allocated memory is still 142.6MB. Free memory was 113.4MB in the beginning and 48.4MB in the end (delta: 65.1MB). Peak memory consumption was 67.1MB. Max. memory is 16.1GB. [2025-01-09 06:13:23,696 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 226.5MB. Free memory is still 146.7MB. There was no memory consumed. Max. memory is 16.1GB. [2025-01-09 06:13:23,697 INFO L158 Benchmark]: CACSL2BoogieTranslator took 270.28ms. Allocated memory is still 142.6MB. Free memory was 113.4MB in the beginning and 98.7MB in the end (delta: 14.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-01-09 06:13:23,697 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.02ms. Allocated memory is still 142.6MB. Free memory was 98.7MB in the beginning and 96.4MB in the end (delta: 2.4MB). There was no memory consumed. Max. memory is 16.1GB. [2025-01-09 06:13:23,698 INFO L158 Benchmark]: Boogie Preprocessor took 67.90ms. Allocated memory is still 142.6MB. Free memory was 96.4MB in the beginning and 94.6MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. [2025-01-09 06:13:23,698 INFO L158 Benchmark]: RCFGBuilder took 480.56ms. Allocated memory is still 142.6MB. Free memory was 94.6MB in the beginning and 70.6MB in the end (delta: 24.0MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2025-01-09 06:13:23,698 INFO L158 Benchmark]: TraceAbstraction took 308.17ms. Allocated memory is still 142.6MB. Free memory was 70.0MB in the beginning and 49.0MB in the end (delta: 21.1MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2025-01-09 06:13:23,699 INFO L158 Benchmark]: Witness Printer took 2.80ms. Allocated memory is still 142.6MB. Free memory was 49.0MB in the beginning and 48.4MB in the end (delta: 587.3kB). There was no memory consumed. Max. memory is 16.1GB. [2025-01-09 06:13:23,700 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 226.5MB. Free memory is still 146.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 270.28ms. Allocated memory is still 142.6MB. Free memory was 113.4MB in the beginning and 98.7MB in the end (delta: 14.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 39.02ms. Allocated memory is still 142.6MB. Free memory was 98.7MB in the beginning and 96.4MB in the end (delta: 2.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 67.90ms. Allocated memory is still 142.6MB. Free memory was 96.4MB in the beginning and 94.6MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 480.56ms. Allocated memory is still 142.6MB. Free memory was 94.6MB in the beginning and 70.6MB in the end (delta: 24.0MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * TraceAbstraction took 308.17ms. Allocated memory is still 142.6MB. Free memory was 70.0MB in the beginning and 49.0MB in the end (delta: 21.1MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Witness Printer took 2.80ms. Allocated memory is still 142.6MB. Free memory was 49.0MB in the beginning and 48.4MB in the end (delta: 587.3kB). 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: 48]: 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 47, overapproximation of someBinaryFLOATComparisonOperation at line 40, overapproximation of someBinaryArithmeticFLOAToperation at line 45. Possible FailurePath: [L403] COND TRUE __VERIFIER_nondet_int() [L404] CALL main1() [L39] float IN = __VERIFIER_nondet_float(); [L40] CALL assume_abort_if_not(IN >= 0.0f && IN < 1.0f) [L34] COND FALSE !(!cond) [L40] RET assume_abort_if_not(IN >= 0.0f && IN < 1.0f) [L42] float x = IN; [L44-L45] float result = 1.0f + 0.5f*x - 0.125f*x*x + 0.0625f*x*x*x - 0.0390625f*x*x*x*x; [L47] COND TRUE !(result >= 0.0f && result < 1.5f) [L48] reach_error() - UnprovableResult [Line: 61]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 103 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 149 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 0 IncrementalHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 149 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=103occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 14 NumberOfCodeBlocks, 14 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 6 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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, ConComCheckerStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2025-01-09 06:13:23,716 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/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/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/square_8+soft_float_1-2a.c.cil.c -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/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 be176f230c0ddf2a166ae209d5d0fb467abe0ece694096a2cf73b073fb0117ce --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-09 06:13:25,622 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-09 06:13:25,696 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2025-01-09 06:13:25,701 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-09 06:13:25,703 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-09 06:13:25,725 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-09 06:13:25,738 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-09 06:13:25,739 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-09 06:13:25,739 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-09 06:13:25,739 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-09 06:13:25,739 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-09 06:13:25,739 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-09 06:13:25,739 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-09 06:13:25,740 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-09 06:13:25,740 INFO L153 SettingsManager]: * Use SBE=true [2025-01-09 06:13:25,740 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-09 06:13:25,740 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-01-09 06:13:25,740 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-09 06:13:25,740 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-09 06:13:25,740 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-09 06:13:25,740 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-01-09 06:13:25,740 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-09 06:13:25,740 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-01-09 06:13:25,740 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-01-09 06:13:25,740 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2025-01-09 06:13:25,740 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2025-01-09 06:13:25,740 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-09 06:13:25,740 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-01-09 06:13:25,740 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-09 06:13:25,740 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-09 06:13:25,740 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-09 06:13:25,741 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 06:13:25,741 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 06:13:25,741 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 06:13:25,741 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 06:13:25,741 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-09 06:13:25,741 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 06:13:25,741 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 06:13:25,741 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 06:13:25,741 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 06:13:25,741 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-09 06:13:25,747 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-09 06:13:25,747 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-01-09 06:13:25,747 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-01-09 06:13:25,747 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2025-01-09 06:13:25,747 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2025-01-09 06:13:25,747 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-09 06:13:25,747 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-09 06:13:25,747 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-09 06:13:25,747 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-09 06:13:25,747 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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-jdk21/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 -> be176f230c0ddf2a166ae209d5d0fb467abe0ece694096a2cf73b073fb0117ce [2025-01-09 06:13:25,998 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-09 06:13:26,007 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-09 06:13:26,010 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-09 06:13:26,012 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-09 06:13:26,012 INFO L274 PluginConnector]: CDTParser initialized [2025-01-09 06:13:26,013 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/square_8+soft_float_1-2a.c.cil.c [2025-01-09 06:13:27,243 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/06a073d1d/8deb7e4624d24f3fabd0f5cbf8c06505/FLAG54dda041b [2025-01-09 06:13:27,468 INFO L384 CDTParser]: Found 1 translation units. [2025-01-09 06:13:27,469 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/combinations/square_8+soft_float_1-2a.c.cil.c [2025-01-09 06:13:27,478 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/06a073d1d/8deb7e4624d24f3fabd0f5cbf8c06505/FLAG54dda041b [2025-01-09 06:13:27,492 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/06a073d1d/8deb7e4624d24f3fabd0f5cbf8c06505 [2025-01-09 06:13:27,494 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-09 06:13:27,496 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-09 06:13:27,497 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-09 06:13:27,498 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-09 06:13:27,501 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-09 06:13:27,501 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 06:13:27" (1/1) ... [2025-01-09 06:13:27,502 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b764cfa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 06:13:27, skipping insertion in model container [2025-01-09 06:13:27,502 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 06:13:27" (1/1) ... [2025-01-09 06:13:27,522 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-09 06:13:27,638 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/combinations/square_8+soft_float_1-2a.c.cil.c[1995,2008] [2025-01-09 06:13:27,645 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/combinations/square_8+soft_float_1-2a.c.cil.c[2389,2402] [2025-01-09 06:13:27,695 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 06:13:27,711 INFO L200 MainTranslator]: Completed pre-run [2025-01-09 06:13:27,726 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/combinations/square_8+soft_float_1-2a.c.cil.c[1995,2008] [2025-01-09 06:13:27,727 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/combinations/square_8+soft_float_1-2a.c.cil.c[2389,2402] [2025-01-09 06:13:27,747 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 06:13:27,766 INFO L204 MainTranslator]: Completed translation [2025-01-09 06:13:27,768 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 06:13:27 WrapperNode [2025-01-09 06:13:27,769 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-09 06:13:27,770 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-09 06:13:27,770 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-09 06:13:27,770 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-09 06:13:27,774 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 06:13:27" (1/1) ... [2025-01-09 06:13:27,781 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 06:13:27" (1/1) ... [2025-01-09 06:13:27,805 INFO L138 Inliner]: procedures = 28, calls = 20, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 168 [2025-01-09 06:13:27,806 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-09 06:13:27,806 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-09 06:13:27,806 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-09 06:13:27,807 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-09 06:13:27,813 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 06:13:27" (1/1) ... [2025-01-09 06:13:27,813 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 06:13:27" (1/1) ... [2025-01-09 06:13:27,815 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 06:13:27" (1/1) ... [2025-01-09 06:13:27,826 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-01-09 06:13:27,826 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 06:13:27" (1/1) ... [2025-01-09 06:13:27,826 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 06:13:27" (1/1) ... [2025-01-09 06:13:27,830 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 06:13:27" (1/1) ... [2025-01-09 06:13:27,831 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 06:13:27" (1/1) ... [2025-01-09 06:13:27,834 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 06:13:27" (1/1) ... [2025-01-09 06:13:27,835 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 06:13:27" (1/1) ... [2025-01-09 06:13:27,835 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 06:13:27" (1/1) ... [2025-01-09 06:13:27,837 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-09 06:13:27,838 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-09 06:13:27,838 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-09 06:13:27,838 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-09 06:13:27,839 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 06:13:27" (1/1) ... [2025-01-09 06:13:27,843 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 06:13:27,850 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 06:13:27,860 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-01-09 06:13:27,862 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-01-09 06:13:27,877 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-09 06:13:27,877 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2025-01-09 06:13:27,877 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2025-01-09 06:13:27,877 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2025-01-09 06:13:27,877 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-09 06:13:27,877 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-09 06:13:27,878 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2025-01-09 06:13:27,878 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2025-01-09 06:13:27,937 INFO L234 CfgBuilder]: Building ICFG [2025-01-09 06:13:27,939 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-09 06:13:32,724 INFO L? ?]: Removed 65 outVars from TransFormulas that were not future-live. [2025-01-09 06:13:32,725 INFO L283 CfgBuilder]: Performing block encoding [2025-01-09 06:13:32,732 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-09 06:13:32,732 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2025-01-09 06:13:32,732 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 06:13:32 BoogieIcfgContainer [2025-01-09 06:13:32,733 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-09 06:13:32,734 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-09 06:13:32,734 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-09 06:13:32,742 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-09 06:13:32,743 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.01 06:13:27" (1/3) ... [2025-01-09 06:13:32,743 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26bbf7ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 06:13:32, skipping insertion in model container [2025-01-09 06:13:32,743 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 06:13:27" (2/3) ... [2025-01-09 06:13:32,743 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26bbf7ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 06:13:32, skipping insertion in model container [2025-01-09 06:13:32,743 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 06:13:32" (3/3) ... [2025-01-09 06:13:32,745 INFO L128 eAbstractionObserver]: Analyzing ICFG square_8+soft_float_1-2a.c.cil.c [2025-01-09 06:13:32,757 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-09 06:13:32,758 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG square_8+soft_float_1-2a.c.cil.c that has 3 procedures, 79 locations, 1 initial locations, 2 loop locations, and 2 error locations. [2025-01-09 06:13:32,800 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-09 06:13:32,813 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;@3d53a12b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-09 06:13:32,813 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2025-01-09 06:13:32,819 INFO L276 IsEmpty]: Start isEmpty. Operand has 79 states, 66 states have (on average 1.5757575757575757) internal successors, (104), 70 states have internal predecessors, (104), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2025-01-09 06:13:32,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2025-01-09 06:13:32,824 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 06:13:32,825 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-01-09 06:13:32,825 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 06:13:32,833 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 06:13:32,834 INFO L85 PathProgramCache]: Analyzing trace with hash 1331740314, now seen corresponding path program 1 times [2025-01-09 06:13:32,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-09 06:13:32,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [544497907] [2025-01-09 06:13:32,840 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 06:13:32,841 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 [2025-01-09 06:13:32,841 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/mathsat [2025-01-09 06:13:32,843 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/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) [2025-01-09 06:13:32,845 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/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 [2025-01-09 06:13:32,882 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-01-09 06:13:33,201 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-01-09 06:13:33,202 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 06:13:33,202 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 06:13:33,215 INFO L256 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-01-09 06:13:33,217 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 06:13:33,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-09 06:13:33,233 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-09 06:13:33,233 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-01-09 06:13:33,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [544497907] [2025-01-09 06:13:33,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [544497907] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 06:13:33,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 06:13:33,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-01-09 06:13:33,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237719468] [2025-01-09 06:13:33,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 06:13:33,240 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-01-09 06:13:33,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-01-09 06:13:33,251 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-01-09 06:13:33,252 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-01-09 06:13:33,254 INFO L87 Difference]: Start difference. First operand has 79 states, 66 states have (on average 1.5757575757575757) internal successors, (104), 70 states have internal predecessors, (104), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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) [2025-01-09 06:13:33,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 06:13:33,269 INFO L93 Difference]: Finished difference Result 153 states and 240 transitions. [2025-01-09 06:13:33,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-01-09 06:13:33,270 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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 7 [2025-01-09 06:13:33,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 06:13:33,274 INFO L225 Difference]: With dead ends: 153 [2025-01-09 06:13:33,275 INFO L226 Difference]: Without dead ends: 72 [2025-01-09 06:13:33,276 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-01-09 06:13:33,278 INFO L435 NwaCegarLoop]: 114 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 06:13:33,278 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 06:13:33,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2025-01-09 06:13:33,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2025-01-09 06:13:33,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 60 states have (on average 1.5) internal successors, (90), 63 states have internal predecessors, (90), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2025-01-09 06:13:33,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 105 transitions. [2025-01-09 06:13:33,301 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 105 transitions. Word has length 7 [2025-01-09 06:13:33,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 06:13:33,301 INFO L471 AbstractCegarLoop]: Abstraction has 72 states and 105 transitions. [2025-01-09 06:13:33,301 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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) [2025-01-09 06:13:33,301 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 105 transitions. [2025-01-09 06:13:33,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2025-01-09 06:13:33,302 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 06:13:33,302 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-01-09 06:13:33,315 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/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 [2025-01-09 06:13:33,506 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-jdk21/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 [2025-01-09 06:13:33,507 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 06:13:33,507 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 06:13:33,507 INFO L85 PathProgramCache]: Analyzing trace with hash 1331799896, now seen corresponding path program 1 times [2025-01-09 06:13:33,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-01-09 06:13:33,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [46014999] [2025-01-09 06:13:33,508 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 06:13:33,508 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 [2025-01-09 06:13:33,508 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/mathsat [2025-01-09 06:13:33,510 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/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) [2025-01-09 06:13:33,512 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/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 [2025-01-09 06:13:33,528 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes.