./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/freire1_valuebound20.c --full-output --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --witnessprinter.generate.graphml.witnesses false --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ca4ee3dd Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/certificate-witnesses-artifact/automizer/data/config -Xmx15G -Xms4m -jar /storage/repos/certificate-witnesses-artifact/automizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/certificate-witnesses-artifact/automizer/data -tc /storage/repos/certificate-witnesses-artifact/automizer/config/AutomizerReach.xml -i ../sv-benchmarks/c/nla-digbench-scaling/freire1_valuebound20.c -s /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/certificate-witnesses-artifact/automizer --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 bff053df41c1fc922299a13f2dac2a98df2d05e146d51bf11ac9e37ddfefad6a --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --witnessprinter.generate.graphml.witnesses false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.dk.referee-eval-ca4ee3d-m [2024-09-20 19:21:13,396 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-20 19:21:13,475 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-09-20 19:21:13,479 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-20 19:21:13,482 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-20 19:21:13,513 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-20 19:21:13,514 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-20 19:21:13,515 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-20 19:21:13,515 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-20 19:21:13,517 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-20 19:21:13,518 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-20 19:21:13,518 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-20 19:21:13,518 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-20 19:21:13,521 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-20 19:21:13,522 INFO L153 SettingsManager]: * Use SBE=true [2024-09-20 19:21:13,522 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-20 19:21:13,522 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-20 19:21:13,522 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-20 19:21:13,523 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-09-20 19:21:13,523 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-20 19:21:13,523 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-20 19:21:13,524 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-20 19:21:13,524 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-20 19:21:13,524 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-20 19:21:13,526 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-20 19:21:13,526 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-20 19:21:13,526 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-20 19:21:13,527 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-20 19:21:13,527 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-20 19:21:13,527 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-20 19:21:13,527 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-20 19:21:13,528 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-20 19:21:13,528 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-20 19:21:13,528 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-20 19:21:13,528 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-20 19:21:13,529 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-20 19:21:13,529 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-09-20 19:21:13,529 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-09-20 19:21:13,529 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-20 19:21:13,530 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-20 19:21:13,530 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-20 19:21:13,530 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-20 19:21:13,531 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/certificate-witnesses-artifact/automizer/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bff053df41c1fc922299a13f2dac2a98df2d05e146d51bf11ac9e37ddfefad6a Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Generate GraphML witnesses -> false [2024-09-20 19:21:13,784 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-20 19:21:13,810 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-20 19:21:13,812 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-20 19:21:13,813 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-20 19:21:13,814 INFO L274 PluginConnector]: CDTParser initialized [2024-09-20 19:21:13,815 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/nla-digbench-scaling/freire1_valuebound20.c [2024-09-20 19:21:15,244 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-20 19:21:15,431 INFO L384 CDTParser]: Found 1 translation units. [2024-09-20 19:21:15,432 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench-scaling/freire1_valuebound20.c [2024-09-20 19:21:15,439 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/1b4ed0e6a/4842d472ba034fd2871e789b20e1412e/FLAG82caa0aaf [2024-09-20 19:21:15,450 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/1b4ed0e6a/4842d472ba034fd2871e789b20e1412e [2024-09-20 19:21:15,452 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-20 19:21:15,454 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-20 19:21:15,455 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-20 19:21:15,455 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-20 19:21:15,459 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-20 19:21:15,460 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 07:21:15" (1/1) ... [2024-09-20 19:21:15,461 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d2c3531 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:21:15, skipping insertion in model container [2024-09-20 19:21:15,461 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 07:21:15" (1/1) ... [2024-09-20 19:21:15,477 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-20 19:21:15,637 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench-scaling/freire1_valuebound20.c[712,725] [2024-09-20 19:21:15,657 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-20 19:21:15,669 INFO L200 MainTranslator]: Completed pre-run [2024-09-20 19:21:15,683 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench-scaling/freire1_valuebound20.c[712,725] [2024-09-20 19:21:15,687 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-20 19:21:15,706 INFO L204 MainTranslator]: Completed translation [2024-09-20 19:21:15,707 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:21:15 WrapperNode [2024-09-20 19:21:15,707 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-20 19:21:15,708 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-20 19:21:15,709 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-20 19:21:15,709 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-20 19:21:15,716 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:21:15" (1/1) ... [2024-09-20 19:21:15,723 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:21:15" (1/1) ... [2024-09-20 19:21:15,730 INFO L138 Inliner]: procedures = 14, calls = 10, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-20 19:21:15,730 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-20 19:21:15,731 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-20 19:21:15,731 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-20 19:21:15,731 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-20 19:21:15,741 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:21:15" (1/1) ... [2024-09-20 19:21:15,741 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:21:15" (1/1) ... [2024-09-20 19:21:15,759 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:21:15" (1/1) ... [2024-09-20 19:21:15,791 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]. [2024-09-20 19:21:15,791 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:21:15" (1/1) ... [2024-09-20 19:21:15,791 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:21:15" (1/1) ... [2024-09-20 19:21:15,798 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:21:15" (1/1) ... [2024-09-20 19:21:15,801 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:21:15" (1/1) ... [2024-09-20 19:21:15,802 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:21:15" (1/1) ... [2024-09-20 19:21:15,807 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:21:15" (1/1) ... [2024-09-20 19:21:15,830 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-20 19:21:15,831 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-20 19:21:15,831 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-20 19:21:15,831 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-20 19:21:15,831 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:21:15" (1/1) ... [2024-09-20 19:21:15,838 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-20 19:21:15,861 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 19:21:15,879 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-09-20 19:21:15,882 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-09-20 19:21:15,926 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-20 19:21:15,926 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-09-20 19:21:15,926 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-09-20 19:21:15,926 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-20 19:21:15,926 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-20 19:21:15,927 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-09-20 19:21:15,927 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-20 19:21:15,928 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-20 19:21:15,929 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-20 19:21:15,929 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-20 19:21:15,929 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-09-20 19:21:15,929 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-09-20 19:21:15,981 INFO L242 CfgBuilder]: Building ICFG [2024-09-20 19:21:15,983 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-20 19:21:16,084 INFO L? ?]: Removed 4 outVars from TransFormulas that were not future-live. [2024-09-20 19:21:16,084 INFO L291 CfgBuilder]: Performing block encoding [2024-09-20 19:21:16,107 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-20 19:21:16,107 INFO L318 CfgBuilder]: Removed 1 assume(true) statements. [2024-09-20 19:21:16,108 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 07:21:16 BoogieIcfgContainer [2024-09-20 19:21:16,108 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-20 19:21:16,110 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-20 19:21:16,110 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-20 19:21:16,114 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-20 19:21:16,114 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 07:21:15" (1/3) ... [2024-09-20 19:21:16,115 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e2e9858 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 07:21:16, skipping insertion in model container [2024-09-20 19:21:16,115 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:21:15" (2/3) ... [2024-09-20 19:21:16,115 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e2e9858 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 07:21:16, skipping insertion in model container [2024-09-20 19:21:16,115 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 07:21:16" (3/3) ... [2024-09-20 19:21:16,116 INFO L112 eAbstractionObserver]: Analyzing ICFG freire1_valuebound20.c [2024-09-20 19:21:16,129 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-20 19:21:16,129 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-20 19:21:16,176 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-20 19:21:16,182 INFO L336 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=All, 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;@355d4300, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-20 19:21:16,182 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-20 19:21:16,187 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 15 states have internal predecessors, (20), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-09-20 19:21:16,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-09-20 19:21:16,201 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 19:21:16,201 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 19:21:16,202 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 19:21:16,208 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:21:16,209 INFO L85 PathProgramCache]: Analyzing trace with hash -1065431329, now seen corresponding path program 1 times [2024-09-20 19:21:16,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 19:21:16,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464164127] [2024-09-20 19:21:16,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 19:21:16,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 19:21:16,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:21:16,359 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2024-09-20 19:21:16,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:21:16,376 INFO L381 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-09-20 19:21:16,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:21:16,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-20 19:21:16,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-09-20 19:21:16,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464164127] [2024-09-20 19:21:16,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464164127] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-20 19:21:16,390 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-20 19:21:16,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-20 19:21:16,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18142447] [2024-09-20 19:21:16,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-20 19:21:16,396 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-09-20 19:21:16,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-09-20 19:21:16,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-09-20 19:21:16,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-20 19:21:16,423 INFO L87 Difference]: Start difference. First operand has 25 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 15 states have internal predecessors, (20), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-20 19:21:16,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 19:21:16,455 INFO L93 Difference]: Finished difference Result 42 states and 53 transitions. [2024-09-20 19:21:16,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-20 19:21:16,458 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 16 [2024-09-20 19:21:16,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 19:21:16,464 INFO L225 Difference]: With dead ends: 42 [2024-09-20 19:21:16,465 INFO L226 Difference]: Without dead ends: 21 [2024-09-20 19:21:16,468 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-20 19:21:16,471 INFO L434 NwaCegarLoop]: 24 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-20 19:21:16,473 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 24 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-20 19:21:16,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2024-09-20 19:21:16,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2024-09-20 19:21:16,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 13 states have internal predecessors, (14), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-20 19:21:16,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2024-09-20 19:21:16,510 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 16 [2024-09-20 19:21:16,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 19:21:16,511 INFO L474 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2024-09-20 19:21:16,512 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-20 19:21:16,513 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:21:16,513 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2024-09-20 19:21:16,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-09-20 19:21:16,514 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 19:21:16,514 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 19:21:16,514 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-09-20 19:21:16,515 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 19:21:16,516 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:21:16,517 INFO L85 PathProgramCache]: Analyzing trace with hash -392820709, now seen corresponding path program 1 times [2024-09-20 19:21:16,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-09-20 19:21:16,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964552519] [2024-09-20 19:21:16,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 19:21:16,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-09-20 19:21:16,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-09-20 19:21:16,550 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-09-20 19:21:16,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-09-20 19:21:16,584 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-09-20 19:21:16,584 INFO L326 BasicCegarLoop]: Counterexample is feasible [2024-09-20 19:21:16,586 INFO L785 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-09-20 19:21:16,587 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-09-20 19:21:16,591 INFO L408 BasicCegarLoop]: Path program histogram: [1, 1] [2024-09-20 19:21:16,609 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-09-20 19:21:16,616 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.09 07:21:16 BoogieIcfgContainer [2024-09-20 19:21:16,617 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-09-20 19:21:16,617 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-09-20 19:21:16,617 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-09-20 19:21:16,618 INFO L274 PluginConnector]: Witness Printer initialized [2024-09-20 19:21:16,618 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 07:21:16" (3/4) ... [2024-09-20 19:21:16,620 INFO L142 WitnessPrinter]: No result that supports witness generation found [2024-09-20 19:21:16,621 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-09-20 19:21:16,622 INFO L158 Benchmark]: Toolchain (without parser) took 1168.49ms. Allocated memory is still 153.1MB. Free memory was 84.4MB in the beginning and 87.9MB in the end (delta: -3.5MB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-20 19:21:16,622 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 153.1MB. Free memory is still 117.5MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-20 19:21:16,624 INFO L158 Benchmark]: CACSL2BoogieTranslator took 252.61ms. Allocated memory is still 153.1MB. Free memory was 84.2MB in the beginning and 73.0MB in the end (delta: 11.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-09-20 19:21:16,624 INFO L158 Benchmark]: Boogie Procedure Inliner took 22.27ms. Allocated memory is still 153.1MB. Free memory was 73.0MB in the beginning and 72.0MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2024-09-20 19:21:16,624 INFO L158 Benchmark]: Boogie Preprocessor took 99.29ms. Allocated memory is still 153.1MB. Free memory was 72.0MB in the beginning and 126.1MB in the end (delta: -54.1MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2024-09-20 19:21:16,625 INFO L158 Benchmark]: RCFGBuilder took 277.70ms. Allocated memory is still 153.1MB. Free memory was 126.1MB in the beginning and 114.3MB in the end (delta: 11.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2024-09-20 19:21:16,625 INFO L158 Benchmark]: TraceAbstraction took 506.89ms. Allocated memory is still 153.1MB. Free memory was 113.1MB in the beginning and 87.9MB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2024-09-20 19:21:16,625 INFO L158 Benchmark]: Witness Printer took 4.32ms. Allocated memory is still 153.1MB. Free memory is still 87.9MB. There was no memory consumed. Max. memory is 16.1GB. [2024-09-20 19:21:16,631 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 153.1MB. Free memory is still 117.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 252.61ms. Allocated memory is still 153.1MB. Free memory was 84.2MB in the beginning and 73.0MB in the end (delta: 11.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 22.27ms. Allocated memory is still 153.1MB. Free memory was 73.0MB in the beginning and 72.0MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 99.29ms. Allocated memory is still 153.1MB. Free memory was 72.0MB in the beginning and 126.1MB in the end (delta: -54.1MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * RCFGBuilder took 277.70ms. Allocated memory is still 153.1MB. Free memory was 126.1MB in the beginning and 114.3MB in the end (delta: 11.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 506.89ms. Allocated memory is still 153.1MB. Free memory was 113.1MB in the beginning and 87.9MB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Witness Printer took 4.32ms. Allocated memory is still 153.1MB. Free memory is still 87.9MB. 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: 19]: 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 to_int at line 33, overapproximation of someBinaryDOUBLEComparisonOperation at line 28, overapproximation of someBinaryArithmeticDOUBLEoperation at line 29. Possible FailurePath: [L25] int r; [L26] double a, x; [L27] a = __VERIFIER_nondet_double() [L28] CALL assume_abort_if_not(a>=0 && a<=20) VAL [\old(cond)=1] [L14] COND FALSE !(!cond) VAL [\old(cond)=1] [L28] RET assume_abort_if_not(a>=0 && a<=20) [L29] x = a / 2.0 [L30] r = 0 VAL [r=0] [L32] COND TRUE 1 VAL [r=0] [L33] CALL __VERIFIER_assert((int)(r*r - a - r + 2*x) == 0) VAL [\old(cond)=0] [L17] COND TRUE !(cond) VAL [\old(cond)=0] [L19] reach_error() VAL [\old(cond)=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 25 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.4s, 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, 24 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2 IncrementalHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 24 mSDtfsCounter, 2 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 7 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=25occurred 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, 0.1s InterpolantComputationTime, 32 NumberOfCodeBlocks, 32 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 15 ConstructedInterpolants, 0 QuantifiedInterpolants, 15 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 [2024-09-20 19:21:16,668 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/certificate-witnesses-artifact/automizer/data/config -Xmx15G -Xms4m -jar /storage/repos/certificate-witnesses-artifact/automizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/certificate-witnesses-artifact/automizer/data -tc /storage/repos/certificate-witnesses-artifact/automizer/config/AutomizerReach.xml -i ../sv-benchmarks/c/nla-digbench-scaling/freire1_valuebound20.c -s /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/certificate-witnesses-artifact/automizer --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 bff053df41c1fc922299a13f2dac2a98df2d05e146d51bf11ac9e37ddfefad6a --procedureinliner.inline.calls.to.implemented.procedures NEVER --traceabstraction.positions.where.we.compute.the.hoare.annotation All --witnessprinter.yaml.format.version 2.1 --witnessprinter.generate.graphml.witnesses false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.dk.referee-eval-ca4ee3d-m [2024-09-20 19:21:18,789 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-09-20 19:21:18,872 INFO L114 SettingsManager]: Loading settings from /storage/repos/certificate-witnesses-artifact/automizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2024-09-20 19:21:18,882 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-09-20 19:21:18,882 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-09-20 19:21:18,916 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-09-20 19:21:18,916 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-09-20 19:21:18,917 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-09-20 19:21:18,917 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-09-20 19:21:18,919 INFO L153 SettingsManager]: * Use memory slicer=true [2024-09-20 19:21:18,921 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-09-20 19:21:18,922 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-09-20 19:21:18,922 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-09-20 19:21:18,923 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-09-20 19:21:18,923 INFO L153 SettingsManager]: * Use SBE=true [2024-09-20 19:21:18,923 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-09-20 19:21:18,923 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-09-20 19:21:18,924 INFO L153 SettingsManager]: * sizeof long=4 [2024-09-20 19:21:18,924 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-09-20 19:21:18,924 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-09-20 19:21:18,925 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-09-20 19:21:18,928 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-09-20 19:21:18,928 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-09-20 19:21:18,928 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-09-20 19:21:18,929 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-09-20 19:21:18,929 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-09-20 19:21:18,929 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-09-20 19:21:18,929 INFO L153 SettingsManager]: * sizeof long double=12 [2024-09-20 19:21:18,929 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-09-20 19:21:18,930 INFO L153 SettingsManager]: * Use constant arrays=true [2024-09-20 19:21:18,930 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-09-20 19:21:18,930 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-09-20 19:21:18,930 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-09-20 19:21:18,931 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-09-20 19:21:18,931 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-20 19:21:18,931 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-09-20 19:21:18,933 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-09-20 19:21:18,933 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-09-20 19:21:18,933 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-09-20 19:21:18,934 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-09-20 19:21:18,934 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-09-20 19:21:18,935 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-09-20 19:21:18,935 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-09-20 19:21:18,936 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-09-20 19:21:18,936 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2024-09-20 19:21:18,936 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/certificate-witnesses-artifact/automizer/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/certificate-witnesses-artifact/automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bff053df41c1fc922299a13f2dac2a98df2d05e146d51bf11ac9e37ddfefad6a Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.procedureinliner: Inline calls to implemented procedures -> NEVER Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: YAML Format version -> 2.1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Generate GraphML witnesses -> false [2024-09-20 19:21:19,255 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-09-20 19:21:19,276 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-09-20 19:21:19,278 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-09-20 19:21:19,279 INFO L270 PluginConnector]: Initializing CDTParser... [2024-09-20 19:21:19,281 INFO L274 PluginConnector]: CDTParser initialized [2024-09-20 19:21:19,282 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/certificate-witnesses-artifact/automizer/../sv-benchmarks/c/nla-digbench-scaling/freire1_valuebound20.c [2024-09-20 19:21:20,738 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-09-20 19:21:20,955 INFO L384 CDTParser]: Found 1 translation units. [2024-09-20 19:21:20,956 INFO L180 CDTParser]: Scanning /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench-scaling/freire1_valuebound20.c [2024-09-20 19:21:20,966 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/certificate-witnesses-artifact/automizer/data/13ba425d4/a135e68025e346fdb356fc80cca07714/FLAG473553f98 [2024-09-20 19:21:20,982 INFO L435 CDTParser]: Successfully deleted /storage/repos/certificate-witnesses-artifact/automizer/data/13ba425d4/a135e68025e346fdb356fc80cca07714 [2024-09-20 19:21:20,986 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-09-20 19:21:20,987 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-09-20 19:21:20,988 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-09-20 19:21:20,988 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-09-20 19:21:20,994 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-09-20 19:21:20,995 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 07:21:20" (1/1) ... [2024-09-20 19:21:20,996 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@453805d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:21:20, skipping insertion in model container [2024-09-20 19:21:20,996 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 07:21:20" (1/1) ... [2024-09-20 19:21:21,014 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-09-20 19:21:21,189 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench-scaling/freire1_valuebound20.c[712,725] [2024-09-20 19:21:21,211 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-20 19:21:21,228 INFO L200 MainTranslator]: Completed pre-run [2024-09-20 19:21:21,240 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/certificate-witnesses-artifact/sv-benchmarks/c/nla-digbench-scaling/freire1_valuebound20.c[712,725] [2024-09-20 19:21:21,249 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-09-20 19:21:21,268 INFO L204 MainTranslator]: Completed translation [2024-09-20 19:21:21,268 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:21:21 WrapperNode [2024-09-20 19:21:21,268 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-09-20 19:21:21,269 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-09-20 19:21:21,269 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-09-20 19:21:21,270 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-09-20 19:21:21,276 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:21:21" (1/1) ... [2024-09-20 19:21:21,289 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:21:21" (1/1) ... [2024-09-20 19:21:21,299 INFO L138 Inliner]: procedures = 15, calls = 10, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2024-09-20 19:21:21,299 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-09-20 19:21:21,300 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-09-20 19:21:21,300 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-09-20 19:21:21,300 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-09-20 19:21:21,310 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:21:21" (1/1) ... [2024-09-20 19:21:21,311 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:21:21" (1/1) ... [2024-09-20 19:21:21,315 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:21:21" (1/1) ... [2024-09-20 19:21:21,330 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]. [2024-09-20 19:21:21,331 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:21:21" (1/1) ... [2024-09-20 19:21:21,331 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:21:21" (1/1) ... [2024-09-20 19:21:21,337 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:21:21" (1/1) ... [2024-09-20 19:21:21,343 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:21:21" (1/1) ... [2024-09-20 19:21:21,345 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:21:21" (1/1) ... [2024-09-20 19:21:21,346 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:21:21" (1/1) ... [2024-09-20 19:21:21,351 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-09-20 19:21:21,352 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-09-20 19:21:21,353 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-09-20 19:21:21,353 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-09-20 19:21:21,354 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:21:21" (1/1) ... [2024-09-20 19:21:21,358 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-09-20 19:21:21,369 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/z3 [2024-09-20 19:21:21,386 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-09-20 19:21:21,393 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-09-20 19:21:21,437 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-09-20 19:21:21,438 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-09-20 19:21:21,438 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-09-20 19:21:21,438 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-09-20 19:21:21,439 INFO L130 BoogieDeclarations]: Found specification of procedure main [2024-09-20 19:21:21,439 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2024-09-20 19:21:21,440 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2024-09-20 19:21:21,440 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2024-09-20 19:21:21,440 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-09-20 19:21:21,440 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-09-20 19:21:21,440 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-09-20 19:21:21,440 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-09-20 19:21:21,519 INFO L242 CfgBuilder]: Building ICFG [2024-09-20 19:21:21,521 INFO L268 CfgBuilder]: Building CFG for each procedure with an implementation [2024-09-20 19:21:22,424 INFO L? ?]: Removed 4 outVars from TransFormulas that were not future-live. [2024-09-20 19:21:22,425 INFO L291 CfgBuilder]: Performing block encoding [2024-09-20 19:21:22,448 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-09-20 19:21:22,448 INFO L318 CfgBuilder]: Removed 1 assume(true) statements. [2024-09-20 19:21:22,449 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 07:21:22 BoogieIcfgContainer [2024-09-20 19:21:22,449 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-09-20 19:21:22,451 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-09-20 19:21:22,451 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-09-20 19:21:22,454 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-09-20 19:21:22,454 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 07:21:20" (1/3) ... [2024-09-20 19:21:22,455 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47a5fde4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 07:21:22, skipping insertion in model container [2024-09-20 19:21:22,455 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 07:21:21" (2/3) ... [2024-09-20 19:21:22,455 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47a5fde4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 07:21:22, skipping insertion in model container [2024-09-20 19:21:22,455 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 07:21:22" (3/3) ... [2024-09-20 19:21:22,457 INFO L112 eAbstractionObserver]: Analyzing ICFG freire1_valuebound20.c [2024-09-20 19:21:22,473 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:All NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-09-20 19:21:22,473 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-09-20 19:21:22,533 INFO L335 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-09-20 19:21:22,541 INFO L336 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=All, 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;@227e8135, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-09-20 19:21:22,541 INFO L337 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-09-20 19:21:22,545 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 15 states have internal predecessors, (20), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-09-20 19:21:22,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-09-20 19:21:22,552 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 19:21:22,553 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 19:21:22,553 INFO L399 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 19:21:22,558 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:21:22,558 INFO L85 PathProgramCache]: Analyzing trace with hash -1065431329, now seen corresponding path program 1 times [2024-09-20 19:21:22,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-09-20 19:21:22,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [455080013] [2024-09-20 19:21:22,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 19:21:22,572 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 [2024-09-20 19:21:22,572 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/mathsat [2024-09-20 19:21:22,575 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/certificate-witnesses-artifact/automizer/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) [2024-09-20 19:21:22,577 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/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 [2024-09-20 19:21:22,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:21:22,959 INFO L262 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-09-20 19:21:22,964 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 19:21:22,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-20 19:21:22,981 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-20 19:21:22,982 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-09-20 19:21:22,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [455080013] [2024-09-20 19:21:22,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [455080013] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-20 19:21:22,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-20 19:21:22,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-09-20 19:21:22,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469104708] [2024-09-20 19:21:22,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-20 19:21:22,990 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-09-20 19:21:22,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-09-20 19:21:23,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-09-20 19:21:23,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-20 19:21:23,016 INFO L87 Difference]: Start difference. First operand has 25 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 15 states have internal predecessors, (20), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-20 19:21:23,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 19:21:23,059 INFO L93 Difference]: Finished difference Result 42 states and 53 transitions. [2024-09-20 19:21:23,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-09-20 19:21:23,062 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 16 [2024-09-20 19:21:23,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 19:21:23,069 INFO L225 Difference]: With dead ends: 42 [2024-09-20 19:21:23,069 INFO L226 Difference]: Without dead ends: 21 [2024-09-20 19:21:23,072 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-09-20 19:21:23,076 INFO L434 NwaCegarLoop]: 24 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-09-20 19:21:23,080 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 24 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-09-20 19:21:23,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2024-09-20 19:21:23,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2024-09-20 19:21:23,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 13 states have internal predecessors, (14), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-09-20 19:21:23,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2024-09-20 19:21:23,115 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 16 [2024-09-20 19:21:23,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 19:21:23,117 INFO L474 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2024-09-20 19:21:23,117 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-09-20 19:21:23,118 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:21:23,118 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2024-09-20 19:21:23,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-09-20 19:21:23,118 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 19:21:23,118 INFO L216 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 19:21:23,133 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/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 [2024-09-20 19:21:23,319 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/certificate-witnesses-artifact/automizer/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 [2024-09-20 19:21:23,320 INFO L399 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 19:21:23,320 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:21:23,321 INFO L85 PathProgramCache]: Analyzing trace with hash -392820709, now seen corresponding path program 1 times [2024-09-20 19:21:23,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-09-20 19:21:23,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [929982220] [2024-09-20 19:21:23,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 19:21:23,322 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 [2024-09-20 19:21:23,322 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/mathsat [2024-09-20 19:21:23,325 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/certificate-witnesses-artifact/automizer/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) [2024-09-20 19:21:23,327 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/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 [2024-09-20 19:21:23,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-09-20 19:21:23,612 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-09-20 19:21:23,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-09-20 19:21:23,843 ERROR L246 FreeRefinementEngine]: Caught known exception: Invalid model [2024-09-20 19:21:23,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1255422086] [2024-09-20 19:21:23,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 19:21:23,844 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-09-20 19:21:23,844 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/cvc4 [2024-09-20 19:21:23,848 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/certificate-witnesses-artifact/automizer/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-09-20 19:21:23,851 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2024-09-20 19:21:24,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:21:24,453 INFO L262 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-09-20 19:21:24,456 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 19:21:45,691 WARN L293 SmtUtils]: Spent 8.06s on a formula simplification that was a NOOP. DAG size: 17 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-09-20 19:21:52,812 WARN L293 SmtUtils]: Spent 7.12s on a formula simplification that was a NOOP. DAG size: 5 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-09-20 19:22:00,932 WARN L293 SmtUtils]: Spent 8.12s on a formula simplification that was a NOOP. DAG size: 5 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-09-20 19:22:10,157 WARN L293 SmtUtils]: Spent 5.17s on a formula simplification that was a NOOP. DAG size: 5 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-09-20 19:22:21,962 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse2 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv2 32))) (.cse3 ((_ to_fp 11 53) roundNearestTiesToEven 2.0)) (.cse0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv20 32))) (.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) (or (and (exists ((v_main_~a~0_BEFORE_CALL_1 (_ FloatingPoint 11 53))) (and (fp.leq v_main_~a~0_BEFORE_CALL_1 .cse0) (fp.geq v_main_~a~0_BEFORE_CALL_1 .cse1) (= ((_ fp.to_sbv 32) roundTowardZero (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.sub roundNearestTiesToEven .cse1 v_main_~a~0_BEFORE_CALL_1) .cse1) (fp.mul roundNearestTiesToEven .cse2 (fp.div roundNearestTiesToEven v_main_~a~0_BEFORE_CALL_1 .cse3)))) (_ bv0 32)))) (= (_ bv1 32) |c___VERIFIER_assert_#in~cond|)) (and (exists ((v_main_~a~0_BEFORE_CALL_1 (_ FloatingPoint 11 53))) (and (not (= ((_ fp.to_sbv 32) roundTowardZero (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.sub roundNearestTiesToEven .cse1 v_main_~a~0_BEFORE_CALL_1) .cse1) (fp.mul roundNearestTiesToEven .cse2 (fp.div roundNearestTiesToEven v_main_~a~0_BEFORE_CALL_1 .cse3)))) (_ bv0 32))) (fp.leq v_main_~a~0_BEFORE_CALL_1 .cse0) (fp.geq v_main_~a~0_BEFORE_CALL_1 .cse1))) (= (_ bv0 32) |c___VERIFIER_assert_#in~cond|)))) is different from false [2024-09-20 19:22:31,587 WARN L293 SmtUtils]: Spent 5.54s on a formula simplification that was a NOOP. DAG size: 17 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-09-20 19:22:38,484 WARN L293 SmtUtils]: Spent 6.90s on a formula simplification that was a NOOP. DAG size: 5 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-09-20 19:22:46,623 WARN L293 SmtUtils]: Spent 8.14s on a formula simplification that was a NOOP. DAG size: 5 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-09-20 19:23:21,671 WARN L293 SmtUtils]: Spent 26.51s on a formula simplification that was a NOOP. DAG size: 29 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-09-20 19:23:33,397 WARN L293 SmtUtils]: Spent 7.69s on a formula simplification that was a NOOP. DAG size: 17 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-09-20 19:23:39,022 WARN L293 SmtUtils]: Spent 5.62s on a formula simplification that was a NOOP. DAG size: 5 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-09-20 19:23:47,139 WARN L293 SmtUtils]: Spent 8.12s on a formula simplification that was a NOOP. DAG size: 5 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-09-20 19:23:51,169 WARN L854 $PredicateComparison]: unable to prove that (exists ((v_main_~a~0_BEFORE_CALL_1 (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) (and (not (= ((_ fp.to_sbv 32) roundTowardZero (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.sub roundNearestTiesToEven .cse0 v_main_~a~0_BEFORE_CALL_1) .cse0) (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (_ bv2 32)) (fp.div roundNearestTiesToEven v_main_~a~0_BEFORE_CALL_1 ((_ to_fp 11 53) roundNearestTiesToEven 2.0))))) (_ bv0 32))) (fp.leq v_main_~a~0_BEFORE_CALL_1 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv20 32))) (fp.geq v_main_~a~0_BEFORE_CALL_1 .cse0)))) is different from false [2024-09-20 19:23:55,193 WARN L876 $PredicateComparison]: unable to prove that (exists ((v_main_~a~0_BEFORE_CALL_1 (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) (and (not (= ((_ fp.to_sbv 32) roundTowardZero (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.sub roundNearestTiesToEven .cse0 v_main_~a~0_BEFORE_CALL_1) .cse0) (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (_ bv2 32)) (fp.div roundNearestTiesToEven v_main_~a~0_BEFORE_CALL_1 ((_ to_fp 11 53) roundNearestTiesToEven 2.0))))) (_ bv0 32))) (fp.leq v_main_~a~0_BEFORE_CALL_1 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv20 32))) (fp.geq v_main_~a~0_BEFORE_CALL_1 .cse0)))) is different from true [2024-09-20 19:23:55,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-09-20 19:23:55,194 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-09-20 19:23:55,194 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-09-20 19:23:55,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [929982220] [2024-09-20 19:23:55,194 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-09-20 19:23:55,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1255422086] [2024-09-20 19:23:55,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1255422086] provided 1 perfect and 0 imperfect interpolant sequences [2024-09-20 19:23:55,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-09-20 19:23:55,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-09-20 19:23:55,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274631237] [2024-09-20 19:23:55,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-09-20 19:23:55,196 INFO L551 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-09-20 19:23:55,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-09-20 19:23:55,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-09-20 19:23:55,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=52, Unknown=3, NotChecked=30, Total=110 [2024-09-20 19:23:55,198 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand has 11 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 8 states have internal predecessors, (10), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-20 19:23:59,339 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-20 19:24:09,613 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.23s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-09-20 19:24:13,621 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-09-20 19:24:17,166 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.54s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-09-20 19:24:21,534 WARN L854 $PredicateComparison]: unable to prove that (and (let ((.cse2 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv2 32))) (.cse3 ((_ to_fp 11 53) roundNearestTiesToEven 2.0)) (.cse0 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv20 32))) (.cse1 ((_ to_fp 11 53) roundNearestTiesToEven (_ bv0 32)))) (or (and (exists ((v_main_~a~0_BEFORE_CALL_1 (_ FloatingPoint 11 53))) (and (fp.leq v_main_~a~0_BEFORE_CALL_1 .cse0) (fp.geq v_main_~a~0_BEFORE_CALL_1 .cse1) (= ((_ fp.to_sbv 32) roundTowardZero (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.sub roundNearestTiesToEven .cse1 v_main_~a~0_BEFORE_CALL_1) .cse1) (fp.mul roundNearestTiesToEven .cse2 (fp.div roundNearestTiesToEven v_main_~a~0_BEFORE_CALL_1 .cse3)))) (_ bv0 32)))) (= (_ bv1 32) |c___VERIFIER_assert_#in~cond|)) (and (exists ((v_main_~a~0_BEFORE_CALL_1 (_ FloatingPoint 11 53))) (and (not (= ((_ fp.to_sbv 32) roundTowardZero (fp.add roundNearestTiesToEven (fp.sub roundNearestTiesToEven (fp.sub roundNearestTiesToEven .cse1 v_main_~a~0_BEFORE_CALL_1) .cse1) (fp.mul roundNearestTiesToEven .cse2 (fp.div roundNearestTiesToEven v_main_~a~0_BEFORE_CALL_1 .cse3)))) (_ bv0 32))) (fp.leq v_main_~a~0_BEFORE_CALL_1 .cse0) (fp.geq v_main_~a~0_BEFORE_CALL_1 .cse1))) (= (_ bv0 32) |c___VERIFIER_assert_#in~cond|)))) (= ((_ sign_extend 24) (_ bv0 8)) (select (select |c_#memory_int#0| (_ bv1 32)) (_ bv1 32))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2024-09-20 19:24:25,661 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.09s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-09-20 19:24:29,665 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-09-20 19:24:33,670 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-20 19:24:37,675 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-09-20 19:24:41,678 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-09-20 19:24:45,683 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-09-20 19:24:49,686 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-09-20 19:24:53,689 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2024-09-20 19:24:57,977 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-09-20 19:25:01,983 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-09-20 19:25:03,922 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.66s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-09-20 19:25:08,271 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-09-20 19:25:12,808 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-09-20 19:25:16,812 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-09-20 19:25:20,991 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-09-20 19:25:24,995 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-09-20 19:25:29,000 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-09-20 19:25:33,005 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-09-20 19:25:37,010 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-09-20 19:25:37,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-09-20 19:25:37,475 INFO L93 Difference]: Finished difference Result 31 states and 33 transitions. [2024-09-20 19:25:37,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-09-20 19:25:37,514 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 8 states have internal predecessors, (10), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 16 [2024-09-20 19:25:37,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-09-20 19:25:37,515 INFO L225 Difference]: With dead ends: 31 [2024-09-20 19:25:37,515 INFO L226 Difference]: Without dead ends: 29 [2024-09-20 19:25:37,516 INFO L433 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 58.0s TimeCoverageRelationStatistics Valid=49, Invalid=115, Unknown=4, NotChecked=72, Total=240 [2024-09-20 19:25:37,517 INFO L434 NwaCegarLoop]: 17 mSDtfsCounter, 26 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 8 mSolverCounterUnsat, 20 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 92.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 20 IncrementalHoareTripleChecker+Unknown, 64 IncrementalHoareTripleChecker+Unchecked, 93.1s IncrementalHoareTripleChecker+Time [2024-09-20 19:25:37,517 INFO L435 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 66 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 56 Invalid, 20 Unknown, 64 Unchecked, 93.1s Time] [2024-09-20 19:25:37,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2024-09-20 19:25:37,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 27. [2024-09-20 19:25:37,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 16 states have (on average 1.125) internal successors, (18), 18 states have internal predecessors, (18), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2024-09-20 19:25:37,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2024-09-20 19:25:37,527 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 16 [2024-09-20 19:25:37,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-09-20 19:25:37,527 INFO L474 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2024-09-20 19:25:37,528 INFO L475 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 8 states have internal predecessors, (10), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-09-20 19:25:37,528 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:25:37,528 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2024-09-20 19:25:37,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-09-20 19:25:37,529 INFO L208 NwaCegarLoop]: Found error trace [2024-09-20 19:25:37,529 INFO L216 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-09-20 19:25:37,547 INFO L552 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/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 [2024-09-20 19:25:37,737 INFO L540 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/cvc4 --incremental --print-success --lang smt (4)] Forceful destruction successful, exit code 0 [2024-09-20 19:25:37,929 WARN L456 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/certificate-witnesses-artifact/automizer/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,4 /storage/repos/certificate-witnesses-artifact/automizer/cvc4 --incremental --print-success --lang smt [2024-09-20 19:25:37,930 INFO L399 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-09-20 19:25:37,931 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-09-20 19:25:37,931 INFO L85 PathProgramCache]: Analyzing trace with hash -711167633, now seen corresponding path program 1 times [2024-09-20 19:25:37,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-09-20 19:25:37,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2109402947] [2024-09-20 19:25:37,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-09-20 19:25:37,931 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 [2024-09-20 19:25:37,931 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/certificate-witnesses-artifact/automizer/mathsat [2024-09-20 19:25:37,934 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/certificate-witnesses-artifact/automizer/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) [2024-09-20 19:25:37,936 INFO L327 MonitoredProcess]: [MP /storage/repos/certificate-witnesses-artifact/automizer/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2024-09-20 19:25:38,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-09-20 19:25:38,183 INFO L262 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-09-20 19:25:38,185 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-09-20 19:25:46,419 WARN L293 SmtUtils]: Spent 8.09s on a formula simplification that was a NOOP. DAG size: 17 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-09-20 19:25:50,465 WARN L854 $PredicateComparison]: unable to prove that (= (_ bv0 32) ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (bvmul c_main_~r~0 c_main_~r~0)) c_main_~a~0) ((_ to_fp 11 53) c_currentRoundingMode c_main_~r~0)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) c_main_~x~0)))) is different from false [2024-09-20 19:25:54,513 WARN L876 $PredicateComparison]: unable to prove that (= (_ bv0 32) ((_ fp.to_sbv 32) roundTowardZero (fp.add c_currentRoundingMode (fp.sub c_currentRoundingMode (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (bvmul c_main_~r~0 c_main_~r~0)) c_main_~a~0) ((_ to_fp 11 53) c_currentRoundingMode c_main_~r~0)) (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) c_main_~x~0)))) is different from true