./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-benchs/float_int_inv_square.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3289d67d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/float-benchs/float_int_inv_square.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 a3f1488b0e5756e8d9e219e50ec38e84e8e4fac76b2e3a5e1785d4e14d4111d8 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-16 04:53:42,683 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-16 04:53:42,753 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-16 04:53:42,761 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-16 04:53:42,762 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-16 04:53:42,788 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-16 04:53:42,789 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-16 04:53:42,789 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-16 04:53:42,790 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-16 04:53:42,791 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-16 04:53:42,792 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-16 04:53:42,792 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-16 04:53:42,793 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-16 04:53:42,794 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-16 04:53:42,794 INFO L153 SettingsManager]: * Use SBE=true [2024-11-16 04:53:42,795 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-16 04:53:42,795 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-16 04:53:42,795 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-16 04:53:42,795 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-16 04:53:42,795 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-16 04:53:42,796 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-16 04:53:42,799 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-16 04:53:42,799 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-16 04:53:42,799 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-16 04:53:42,799 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-16 04:53:42,800 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-16 04:53:42,800 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-16 04:53:42,800 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-16 04:53:42,800 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-16 04:53:42,800 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-16 04:53:42,801 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-16 04:53:42,801 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-16 04:53:42,801 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 04:53:42,801 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-16 04:53:42,801 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-16 04:53:42,801 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-16 04:53:42,802 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-16 04:53:42,802 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-16 04:53:42,802 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-16 04:53:42,802 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-16 04:53:42,802 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-16 04:53:42,803 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-16 04:53:42,803 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a3f1488b0e5756e8d9e219e50ec38e84e8e4fac76b2e3a5e1785d4e14d4111d8 [2024-11-16 04:53:43,023 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-16 04:53:43,041 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-16 04:53:43,044 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-16 04:53:43,045 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-16 04:53:43,046 INFO L274 PluginConnector]: CDTParser initialized [2024-11-16 04:53:43,047 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/float_int_inv_square.c [2024-11-16 04:53:44,368 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-16 04:53:44,511 INFO L384 CDTParser]: Found 1 translation units. [2024-11-16 04:53:44,512 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/float_int_inv_square.c [2024-11-16 04:53:44,518 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5c1275fac/605465fa0de44544914f4a2328a7563b/FLAG1d7361796 [2024-11-16 04:53:44,535 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5c1275fac/605465fa0de44544914f4a2328a7563b [2024-11-16 04:53:44,538 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-16 04:53:44,541 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-16 04:53:44,542 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-16 04:53:44,542 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-16 04:53:44,548 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-16 04:53:44,549 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 04:53:44" (1/1) ... [2024-11-16 04:53:44,549 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50a45d43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:53:44, skipping insertion in model container [2024-11-16 04:53:44,550 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 04:53:44" (1/1) ... [2024-11-16 04:53:44,567 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-16 04:53:44,723 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/float_int_inv_square.c[488,501] [2024-11-16 04:53:44,735 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 04:53:44,746 INFO L200 MainTranslator]: Completed pre-run [2024-11-16 04:53:44,757 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/float_int_inv_square.c[488,501] [2024-11-16 04:53:44,759 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 04:53:44,774 INFO L204 MainTranslator]: Completed translation [2024-11-16 04:53:44,775 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:53:44 WrapperNode [2024-11-16 04:53:44,775 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-16 04:53:44,776 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-16 04:53:44,777 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-16 04:53:44,777 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-16 04:53:44,783 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:53:44" (1/1) ... [2024-11-16 04:53:44,791 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:53:44" (1/1) ... [2024-11-16 04:53:44,805 INFO L138 Inliner]: procedures = 14, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 31 [2024-11-16 04:53:44,806 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-16 04:53:44,807 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-16 04:53:44,807 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-16 04:53:44,807 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-16 04:53:44,815 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:53:44" (1/1) ... [2024-11-16 04:53:44,816 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:53:44" (1/1) ... [2024-11-16 04:53:44,818 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:53:44" (1/1) ... [2024-11-16 04:53:44,828 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]. [2024-11-16 04:53:44,829 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:53:44" (1/1) ... [2024-11-16 04:53:44,829 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:53:44" (1/1) ... [2024-11-16 04:53:44,835 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:53:44" (1/1) ... [2024-11-16 04:53:44,837 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:53:44" (1/1) ... [2024-11-16 04:53:44,838 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:53:44" (1/1) ... [2024-11-16 04:53:44,839 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:53:44" (1/1) ... [2024-11-16 04:53:44,841 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-16 04:53:44,842 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-16 04:53:44,843 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-16 04:53:44,843 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-16 04:53:44,844 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:53:44" (1/1) ... [2024-11-16 04:53:44,852 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 04:53:44,864 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 04:53:44,880 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-16 04:53:44,900 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-16 04:53:44,944 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-16 04:53:44,945 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-16 04:53:44,945 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-16 04:53:44,945 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-16 04:53:45,026 INFO L256 CfgBuilder]: Building ICFG [2024-11-16 04:53:45,029 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-16 04:53:45,110 INFO L? ?]: Removed 8 outVars from TransFormulas that were not future-live. [2024-11-16 04:53:45,110 INFO L307 CfgBuilder]: Performing block encoding [2024-11-16 04:53:45,123 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-16 04:53:45,123 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-16 04:53:45,124 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 04:53:45 BoogieIcfgContainer [2024-11-16 04:53:45,124 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-16 04:53:45,127 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-16 04:53:45,127 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-16 04:53:45,130 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-16 04:53:45,131 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 04:53:44" (1/3) ... [2024-11-16 04:53:45,132 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@730cf521 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 04:53:45, skipping insertion in model container [2024-11-16 04:53:45,132 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:53:44" (2/3) ... [2024-11-16 04:53:45,133 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@730cf521 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 04:53:45, skipping insertion in model container [2024-11-16 04:53:45,134 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 04:53:45" (3/3) ... [2024-11-16 04:53:45,135 INFO L112 eAbstractionObserver]: Analyzing ICFG float_int_inv_square.c [2024-11-16 04:53:45,154 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-16 04:53:45,154 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-16 04:53:45,211 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 04:53:45,220 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;@37ffb62c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 04:53:45,221 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-16 04:53:45,228 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 12 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:53:45,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-16 04:53:45,234 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:53:45,237 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-16 04:53:45,238 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:53:45,244 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:53:45,244 INFO L85 PathProgramCache]: Analyzing trace with hash 1665603496, now seen corresponding path program 1 times [2024-11-16 04:53:45,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:53:45,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388518925] [2024-11-16 04:53:45,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:53:45,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:53:45,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:53:45,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 04:53:45,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 04:53:45,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388518925] [2024-11-16 04:53:45,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [388518925] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:53:45,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:53:45,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 04:53:45,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216087012] [2024-11-16 04:53:45,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:53:45,391 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-16 04:53:45,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 04:53:45,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-16 04:53:45,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-16 04:53:45,412 INFO L87 Difference]: Start difference. First operand has 13 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 12 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) 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) [2024-11-16 04:53:45,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:53:45,422 INFO L93 Difference]: Finished difference Result 22 states and 23 transitions. [2024-11-16 04:53:45,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-16 04:53:45,424 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 [2024-11-16 04:53:45,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:53:45,430 INFO L225 Difference]: With dead ends: 22 [2024-11-16 04:53:45,430 INFO L226 Difference]: Without dead ends: 8 [2024-11-16 04:53:45,432 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-16 04:53:45,436 INFO L432 NwaCegarLoop]: 11 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, 11 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 04:53:45,437 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 04:53:45,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2024-11-16 04:53:45,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2024-11-16 04:53:45,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.0) internal successors, (7), 7 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) [2024-11-16 04:53:45,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 7 transitions. [2024-11-16 04:53:45,461 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 7 transitions. Word has length 7 [2024-11-16 04:53:45,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:53:45,461 INFO L471 AbstractCegarLoop]: Abstraction has 8 states and 7 transitions. [2024-11-16 04:53:45,462 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) [2024-11-16 04:53:45,462 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 7 transitions. [2024-11-16 04:53:45,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-16 04:53:45,462 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:53:45,462 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-16 04:53:45,463 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-16 04:53:45,463 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:53:45,464 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:53:45,464 INFO L85 PathProgramCache]: Analyzing trace with hash 1666527017, now seen corresponding path program 1 times [2024-11-16 04:53:45,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 04:53:45,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326221555] [2024-11-16 04:53:45,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:53:45,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 04:53:45,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-16 04:53:45,482 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-16 04:53:45,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-16 04:53:45,511 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-16 04:53:45,512 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-16 04:53:45,513 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-16 04:53:45,515 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-16 04:53:45,518 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-16 04:53:45,528 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-16 04:53:45,531 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.11 04:53:45 BoogieIcfgContainer [2024-11-16 04:53:45,531 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-16 04:53:45,532 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-16 04:53:45,532 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-16 04:53:45,532 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-16 04:53:45,533 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 04:53:45" (3/4) ... [2024-11-16 04:53:45,535 INFO L146 WitnessPrinter]: No result that supports witness generation found [2024-11-16 04:53:45,536 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-16 04:53:45,537 INFO L158 Benchmark]: Toolchain (without parser) took 996.47ms. Allocated memory was 142.6MB in the beginning and 207.6MB in the end (delta: 65.0MB). Free memory was 70.9MB in the beginning and 149.0MB in the end (delta: -78.1MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-16 04:53:45,537 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 142.6MB. Free memory is still 95.2MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-16 04:53:45,538 INFO L158 Benchmark]: CACSL2BoogieTranslator took 233.27ms. Allocated memory is still 142.6MB. Free memory was 70.7MB in the beginning and 58.6MB in the end (delta: 12.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-11-16 04:53:45,538 INFO L158 Benchmark]: Boogie Procedure Inliner took 30.79ms. Allocated memory is still 142.6MB. Free memory was 58.6MB in the beginning and 57.2MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-16 04:53:45,538 INFO L158 Benchmark]: Boogie Preprocessor took 34.49ms. Allocated memory is still 142.6MB. Free memory was 57.1MB in the beginning and 55.5MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-16 04:53:45,539 INFO L158 Benchmark]: IcfgBuilder took 281.69ms. Allocated memory was 142.6MB in the beginning and 207.6MB in the end (delta: 65.0MB). Free memory was 55.5MB in the beginning and 174.1MB in the end (delta: -118.6MB). Peak memory consumption was 9.8MB. Max. memory is 16.1GB. [2024-11-16 04:53:45,539 INFO L158 Benchmark]: TraceAbstraction took 404.30ms. Allocated memory is still 207.6MB. Free memory was 173.1MB in the beginning and 150.0MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2024-11-16 04:53:45,540 INFO L158 Benchmark]: Witness Printer took 4.54ms. Allocated memory is still 207.6MB. Free memory was 150.0MB in the beginning and 149.0MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-16 04:53:45,542 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 142.6MB. Free memory is still 95.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 233.27ms. Allocated memory is still 142.6MB. Free memory was 70.7MB in the beginning and 58.6MB in the end (delta: 12.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 30.79ms. Allocated memory is still 142.6MB. Free memory was 58.6MB in the beginning and 57.2MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 34.49ms. Allocated memory is still 142.6MB. Free memory was 57.1MB in the beginning and 55.5MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * IcfgBuilder took 281.69ms. Allocated memory was 142.6MB in the beginning and 207.6MB in the end (delta: 65.0MB). Free memory was 55.5MB in the beginning and 174.1MB in the end (delta: -118.6MB). Peak memory consumption was 9.8MB. Max. memory is 16.1GB. * TraceAbstraction took 404.30ms. Allocated memory is still 207.6MB. Free memory was 173.1MB in the beginning and 150.0MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * Witness Printer took 4.54ms. Allocated memory is still 207.6MB. Free memory was 150.0MB in the beginning and 149.0MB in the end (delta: 1.0MB). 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: 11]: 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 22, overapproximation of someBinaryArithmeticFLOAToperation at line 21. Possible FailurePath: [L15] int x; [L16] float y, z; [L18] x = __VERIFIER_nondet_int() [L19] CALL assume_abort_if_not(x >= -10 && x <= 10) [L9] COND FALSE !(!cond) [L19] RET assume_abort_if_not(x >= -10 && x <= 10) [L21] y = x*x - 4.f [L22] CALL __VERIFIER_assert(y != 0.f) [L11] COND TRUE !(cond) [L11] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 13 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 11 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, 11 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=13occurred 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 RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2024-11-16 04:53:45,565 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/float-benchs/float_int_inv_square.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 a3f1488b0e5756e8d9e219e50ec38e84e8e4fac76b2e3a5e1785d4e14d4111d8 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-16 04:53:47,589 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-16 04:53:47,653 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2024-11-16 04:53:47,657 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-16 04:53:47,659 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-16 04:53:47,686 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-16 04:53:47,688 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-16 04:53:47,688 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-16 04:53:47,689 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-16 04:53:47,690 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-16 04:53:47,691 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-16 04:53:47,691 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-16 04:53:47,691 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-16 04:53:47,692 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-16 04:53:47,692 INFO L153 SettingsManager]: * Use SBE=true [2024-11-16 04:53:47,695 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-16 04:53:47,695 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-16 04:53:47,695 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-16 04:53:47,695 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-16 04:53:47,695 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-16 04:53:47,695 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-16 04:53:47,696 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-16 04:53:47,696 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-16 04:53:47,696 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-16 04:53:47,698 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-16 04:53:47,698 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-16 04:53:47,698 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-16 04:53:47,698 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-16 04:53:47,699 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-16 04:53:47,699 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-16 04:53:47,699 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-16 04:53:47,699 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-16 04:53:47,699 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-16 04:53:47,699 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-16 04:53:47,700 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 04:53:47,700 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-16 04:53:47,700 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-16 04:53:47,700 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-16 04:53:47,700 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-16 04:53:47,700 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-16 04:53:47,700 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-16 04:53:47,701 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-16 04:53:47,701 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-16 04:53:47,701 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-16 04:53:47,701 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a3f1488b0e5756e8d9e219e50ec38e84e8e4fac76b2e3a5e1785d4e14d4111d8 [2024-11-16 04:53:47,991 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-16 04:53:48,016 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-16 04:53:48,020 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-16 04:53:48,021 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-16 04:53:48,022 INFO L274 PluginConnector]: CDTParser initialized [2024-11-16 04:53:48,023 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/float_int_inv_square.c [2024-11-16 04:53:49,383 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-16 04:53:49,529 INFO L384 CDTParser]: Found 1 translation units. [2024-11-16 04:53:49,530 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/float_int_inv_square.c [2024-11-16 04:53:49,537 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/19457ea44/9ec66e57ef844bf59eb46ab1b459e5f1/FLAG47518252e [2024-11-16 04:53:49,550 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/19457ea44/9ec66e57ef844bf59eb46ab1b459e5f1 [2024-11-16 04:53:49,552 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-16 04:53:49,553 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-16 04:53:49,554 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-16 04:53:49,554 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-16 04:53:49,558 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-16 04:53:49,559 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 04:53:49" (1/1) ... [2024-11-16 04:53:49,560 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2116018a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:53:49, skipping insertion in model container [2024-11-16 04:53:49,560 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 04:53:49" (1/1) ... [2024-11-16 04:53:49,574 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-16 04:53:49,743 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/float_int_inv_square.c[488,501] [2024-11-16 04:53:49,755 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 04:53:49,769 INFO L200 MainTranslator]: Completed pre-run [2024-11-16 04:53:49,782 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/float_int_inv_square.c[488,501] [2024-11-16 04:53:49,786 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 04:53:49,802 INFO L204 MainTranslator]: Completed translation [2024-11-16 04:53:49,803 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:53:49 WrapperNode [2024-11-16 04:53:49,803 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-16 04:53:49,804 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-16 04:53:49,804 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-16 04:53:49,804 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-16 04:53:49,810 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:53:49" (1/1) ... [2024-11-16 04:53:49,819 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:53:49" (1/1) ... [2024-11-16 04:53:49,835 INFO L138 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 31 [2024-11-16 04:53:49,836 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-16 04:53:49,837 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-16 04:53:49,837 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-16 04:53:49,837 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-16 04:53:49,845 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:53:49" (1/1) ... [2024-11-16 04:53:49,846 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:53:49" (1/1) ... [2024-11-16 04:53:49,847 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:53:49" (1/1) ... [2024-11-16 04:53:49,861 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]. [2024-11-16 04:53:49,862 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:53:49" (1/1) ... [2024-11-16 04:53:49,862 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:53:49" (1/1) ... [2024-11-16 04:53:49,869 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:53:49" (1/1) ... [2024-11-16 04:53:49,873 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:53:49" (1/1) ... [2024-11-16 04:53:49,875 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:53:49" (1/1) ... [2024-11-16 04:53:49,875 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:53:49" (1/1) ... [2024-11-16 04:53:49,877 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-16 04:53:49,878 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-16 04:53:49,878 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-16 04:53:49,878 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-16 04:53:49,879 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:53:49" (1/1) ... [2024-11-16 04:53:49,884 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 04:53:49,894 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 04:53:49,910 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-16 04:53:49,913 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-16 04:53:49,960 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-16 04:53:49,960 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-16 04:53:49,960 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-16 04:53:49,961 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-16 04:53:50,020 INFO L256 CfgBuilder]: Building ICFG [2024-11-16 04:53:50,023 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-16 04:53:50,722 INFO L? ?]: Removed 10 outVars from TransFormulas that were not future-live. [2024-11-16 04:53:50,731 INFO L307 CfgBuilder]: Performing block encoding [2024-11-16 04:53:50,744 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-16 04:53:50,745 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-16 04:53:50,745 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 04:53:50 BoogieIcfgContainer [2024-11-16 04:53:50,745 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-16 04:53:50,746 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-16 04:53:50,747 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-16 04:53:50,751 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-16 04:53:50,752 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 04:53:49" (1/3) ... [2024-11-16 04:53:50,753 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f5acb8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 04:53:50, skipping insertion in model container [2024-11-16 04:53:50,753 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:53:49" (2/3) ... [2024-11-16 04:53:50,753 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f5acb8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 04:53:50, skipping insertion in model container [2024-11-16 04:53:50,754 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 04:53:50" (3/3) ... [2024-11-16 04:53:50,755 INFO L112 eAbstractionObserver]: Analyzing ICFG float_int_inv_square.c [2024-11-16 04:53:50,768 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-16 04:53:50,768 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-16 04:53:50,811 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 04:53:50,817 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;@5e418ad1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 04:53:50,817 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-16 04:53:50,822 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 12 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 04:53:50,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-16 04:53:50,828 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:53:50,829 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-16 04:53:50,830 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:53:50,833 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:53:50,834 INFO L85 PathProgramCache]: Analyzing trace with hash 1665603496, now seen corresponding path program 1 times [2024-11-16 04:53:50,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-16 04:53:50,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1900649457] [2024-11-16 04:53:50,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:53:50,843 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-16 04:53:50,843 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-16 04:53:50,845 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-16 04:53:50,849 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2024-11-16 04:53:50,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 04:53:50,938 INFO L255 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-16 04:53:50,941 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 04:53:50,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 04:53:50,955 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 04:53:50,955 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-11-16 04:53:50,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1900649457] [2024-11-16 04:53:50,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1900649457] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 04:53:50,956 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 04:53:50,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 04:53:50,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31096971] [2024-11-16 04:53:50,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 04:53:50,961 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-16 04:53:50,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-11-16 04:53:50,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-16 04:53:50,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-16 04:53:50,984 INFO L87 Difference]: Start difference. First operand has 13 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 12 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) 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) [2024-11-16 04:53:50,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 04:53:50,993 INFO L93 Difference]: Finished difference Result 22 states and 23 transitions. [2024-11-16 04:53:50,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-16 04:53:50,995 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 [2024-11-16 04:53:50,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 04:53:51,001 INFO L225 Difference]: With dead ends: 22 [2024-11-16 04:53:51,002 INFO L226 Difference]: Without dead ends: 8 [2024-11-16 04:53:51,004 INFO L431 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 [2024-11-16 04:53:51,010 INFO L432 NwaCegarLoop]: 11 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, 11 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 04:53:51,011 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 04:53:51,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2024-11-16 04:53:51,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2024-11-16 04:53:51,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.0) internal successors, (7), 7 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) [2024-11-16 04:53:51,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 7 transitions. [2024-11-16 04:53:51,036 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 7 transitions. Word has length 7 [2024-11-16 04:53:51,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 04:53:51,036 INFO L471 AbstractCegarLoop]: Abstraction has 8 states and 7 transitions. [2024-11-16 04:53:51,037 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) [2024-11-16 04:53:51,037 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 7 transitions. [2024-11-16 04:53:51,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-16 04:53:51,037 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 04:53:51,037 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-16 04:53:51,042 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2024-11-16 04:53:51,238 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-16 04:53:51,239 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 04:53:51,240 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 04:53:51,240 INFO L85 PathProgramCache]: Analyzing trace with hash 1666527017, now seen corresponding path program 1 times [2024-11-16 04:53:51,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-11-16 04:53:51,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2131889995] [2024-11-16 04:53:51,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 04:53:51,242 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-16 04:53:51,242 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2024-11-16 04:53:51,245 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-11-16 04:53:51,246 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2024-11-16 04:53:51,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-16 04:53:51,314 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-16 04:53:51,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-16 04:53:51,376 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2024-11-16 04:53:51,376 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-16 04:53:51,378 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-16 04:53:51,385 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2024-11-16 04:53:51,579 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-11-16 04:53:51,582 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-16 04:53:51,593 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-16 04:53:51,595 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.11 04:53:51 BoogieIcfgContainer [2024-11-16 04:53:51,595 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-16 04:53:51,600 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-16 04:53:51,600 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-16 04:53:51,600 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-16 04:53:51,601 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 04:53:50" (3/4) ... [2024-11-16 04:53:51,602 INFO L137 WitnessPrinter]: Generating witness for reachability counterexample [2024-11-16 04:53:51,628 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-16 04:53:51,629 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-16 04:53:51,629 INFO L158 Benchmark]: Toolchain (without parser) took 2075.93ms. Allocated memory was 54.5MB in the beginning and 67.1MB in the end (delta: 12.6MB). Free memory was 24.7MB in the beginning and 44.1MB in the end (delta: -19.4MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-16 04:53:51,631 INFO L158 Benchmark]: CDTParser took 0.90ms. Allocated memory is still 54.5MB. Free memory is still 30.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-16 04:53:51,631 INFO L158 Benchmark]: CACSL2BoogieTranslator took 249.02ms. Allocated memory was 54.5MB in the beginning and 67.1MB in the end (delta: 12.6MB). Free memory was 24.5MB in the beginning and 38.1MB in the end (delta: -13.7MB). Peak memory consumption was 4.9MB. Max. memory is 16.1GB. [2024-11-16 04:53:51,631 INFO L158 Benchmark]: Boogie Procedure Inliner took 32.58ms. Allocated memory is still 67.1MB. Free memory was 38.1MB in the beginning and 36.4MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-16 04:53:51,633 INFO L158 Benchmark]: Boogie Preprocessor took 40.78ms. Allocated memory is still 67.1MB. Free memory was 36.4MB in the beginning and 34.6MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-11-16 04:53:51,634 INFO L158 Benchmark]: IcfgBuilder took 867.06ms. Allocated memory is still 67.1MB. Free memory was 34.6MB in the beginning and 46.1MB in the end (delta: -11.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-11-16 04:53:51,634 INFO L158 Benchmark]: TraceAbstraction took 848.72ms. Allocated memory is still 67.1MB. Free memory was 45.5MB in the beginning and 23.8MB in the end (delta: 21.7MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2024-11-16 04:53:51,634 INFO L158 Benchmark]: Witness Printer took 28.52ms. Allocated memory is still 67.1MB. Free memory was 45.8MB in the beginning and 44.1MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-16 04:53:51,635 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.90ms. Allocated memory is still 54.5MB. Free memory is still 30.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 249.02ms. Allocated memory was 54.5MB in the beginning and 67.1MB in the end (delta: 12.6MB). Free memory was 24.5MB in the beginning and 38.1MB in the end (delta: -13.7MB). Peak memory consumption was 4.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 32.58ms. Allocated memory is still 67.1MB. Free memory was 38.1MB in the beginning and 36.4MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 40.78ms. Allocated memory is still 67.1MB. Free memory was 36.4MB in the beginning and 34.6MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * IcfgBuilder took 867.06ms. Allocated memory is still 67.1MB. Free memory was 34.6MB in the beginning and 46.1MB in the end (delta: -11.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 848.72ms. Allocated memory is still 67.1MB. Free memory was 45.5MB in the beginning and 23.8MB in the end (delta: 21.7MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Witness Printer took 28.52ms. Allocated memory is still 67.1MB. Free memory was 45.8MB in the beginning and 44.1MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 11]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L15] int x; [L16] float y, z; [L18] x = __VERIFIER_nondet_int() [L19] CALL assume_abort_if_not(x >= -10 && x <= 10) [L9] COND FALSE !(!cond) [L19] RET assume_abort_if_not(x >= -10 && x <= 10) [L21] y = x*x - 4.f [L22] CALL __VERIFIER_assert(y != 0.f) [L11] COND TRUE !(cond) [L11] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 13 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.8s, 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, 11 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, 11 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 6 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13occurred 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, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 14 NumberOfCodeBlocks, 14 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 6 SizeOfPredicates, 0 NumberOfNonLiveVariables, 22 ConjunctsInSsa, 1 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 RESULT: Ultimate proved your program to be incorrect! [2024-11-16 04:53:51,667 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE