/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/nla-digbench-scaling/lcm2_valuebound1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-25 04:14:38,826 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-25 04:14:38,902 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-12-25 04:14:38,906 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-25 04:14:38,906 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-25 04:14:38,928 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-25 04:14:38,929 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-25 04:14:38,929 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-25 04:14:38,930 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-25 04:14:38,934 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-25 04:14:38,934 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-25 04:14:38,934 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-25 04:14:38,935 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-25 04:14:38,936 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-25 04:14:38,936 INFO L153 SettingsManager]: * Use SBE=true [2023-12-25 04:14:38,937 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-25 04:14:38,937 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-25 04:14:38,937 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-25 04:14:38,938 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-25 04:14:38,938 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-25 04:14:38,938 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-25 04:14:38,939 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-25 04:14:38,939 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-25 04:14:38,939 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-25 04:14:38,939 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-25 04:14:38,939 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-25 04:14:38,939 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-25 04:14:38,939 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-25 04:14:38,940 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-25 04:14:38,940 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-25 04:14:38,941 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-25 04:14:38,941 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-25 04:14:38,941 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-25 04:14:38,941 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-25 04:14:38,941 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-25 04:14:38,941 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-25 04:14:38,941 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-25 04:14:38,941 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-25 04:14:38,941 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-12-25 04:14:38,942 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-25 04:14:38,942 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-25 04:14:38,942 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-25 04:14:38,942 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-25 04:14:38,942 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-25 04:14:38,942 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-25 04:14:38,942 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-12-25 04:14:38,943 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-12-25 04:14:39,127 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-25 04:14:39,149 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-25 04:14:39,151 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-25 04:14:39,151 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-25 04:14:39,152 INFO L274 PluginConnector]: CDTParser initialized [2023-12-25 04:14:39,153 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/lcm2_valuebound1.c [2023-12-25 04:14:40,146 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-25 04:14:40,338 INFO L384 CDTParser]: Found 1 translation units. [2023-12-25 04:14:40,338 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/lcm2_valuebound1.c [2023-12-25 04:14:40,344 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d45fe6898/41f2bc04ca6245febc883c529ff0e2a6/FLAGd65de9e7a [2023-12-25 04:14:40,747 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d45fe6898/41f2bc04ca6245febc883c529ff0e2a6 [2023-12-25 04:14:40,749 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-25 04:14:40,751 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-25 04:14:40,753 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-25 04:14:40,753 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-25 04:14:40,761 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-25 04:14:40,762 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.12 04:14:40" (1/1) ... [2023-12-25 04:14:40,763 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74561b9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 04:14:40, skipping insertion in model container [2023-12-25 04:14:40,763 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.12 04:14:40" (1/1) ... [2023-12-25 04:14:40,783 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-25 04:14:40,903 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/lcm2_valuebound1.c[537,550] [2023-12-25 04:14:40,914 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-25 04:14:40,925 INFO L202 MainTranslator]: Completed pre-run [2023-12-25 04:14:40,935 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/lcm2_valuebound1.c[537,550] [2023-12-25 04:14:40,940 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-25 04:14:40,953 INFO L206 MainTranslator]: Completed translation [2023-12-25 04:14:40,954 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 04:14:40 WrapperNode [2023-12-25 04:14:40,954 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-25 04:14:40,955 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-25 04:14:40,955 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-25 04:14:40,955 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-25 04:14:40,961 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 04:14:40" (1/1) ... [2023-12-25 04:14:40,969 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 04:14:40" (1/1) ... [2023-12-25 04:14:40,984 INFO L138 Inliner]: procedures = 14, calls = 22, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 53 [2023-12-25 04:14:40,985 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-25 04:14:40,986 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-25 04:14:40,986 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-25 04:14:40,986 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-25 04:14:40,996 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 04:14:40" (1/1) ... [2023-12-25 04:14:40,997 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 04:14:40" (1/1) ... [2023-12-25 04:14:41,000 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 04:14:40" (1/1) ... [2023-12-25 04:14:41,009 INFO L175 MemorySlicer]: Split 9 memory accesses to 2 slices as follows [2, 7]. 78 percent of accesses are in the largest equivalence class. The 9 initializations are split as follows [2, 7]. The 0 writes are split as follows [0, 0]. [2023-12-25 04:14:41,010 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 04:14:40" (1/1) ... [2023-12-25 04:14:41,010 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 04:14:40" (1/1) ... [2023-12-25 04:14:41,014 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 04:14:40" (1/1) ... [2023-12-25 04:14:41,017 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 04:14:40" (1/1) ... [2023-12-25 04:14:41,018 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 04:14:40" (1/1) ... [2023-12-25 04:14:41,018 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 04:14:40" (1/1) ... [2023-12-25 04:14:41,029 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-25 04:14:41,030 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-25 04:14:41,030 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-25 04:14:41,030 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-25 04:14:41,031 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 04:14:40" (1/1) ... [2023-12-25 04:14:41,039 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-25 04:14:41,049 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-25 04:14:41,073 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-25 04:14:41,079 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-25 04:14:41,105 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-25 04:14:41,105 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-12-25 04:14:41,105 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2023-12-25 04:14:41,107 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-25 04:14:41,107 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-25 04:14:41,107 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-25 04:14:41,108 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-25 04:14:41,108 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-12-25 04:14:41,108 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-12-25 04:14:41,174 INFO L241 CfgBuilder]: Building ICFG [2023-12-25 04:14:41,177 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-25 04:14:41,340 INFO L282 CfgBuilder]: Performing block encoding [2023-12-25 04:14:41,361 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-25 04:14:41,361 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-25 04:14:41,362 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.12 04:14:41 BoogieIcfgContainer [2023-12-25 04:14:41,362 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-25 04:14:41,363 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-25 04:14:41,364 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-25 04:14:41,366 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-25 04:14:41,366 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.12 04:14:40" (1/3) ... [2023-12-25 04:14:41,366 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e28438f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.12 04:14:41, skipping insertion in model container [2023-12-25 04:14:41,366 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 04:14:40" (2/3) ... [2023-12-25 04:14:41,367 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e28438f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.12 04:14:41, skipping insertion in model container [2023-12-25 04:14:41,367 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.12 04:14:41" (3/3) ... [2023-12-25 04:14:41,368 INFO L112 eAbstractionObserver]: Analyzing ICFG lcm2_valuebound1.c [2023-12-25 04:14:41,381 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-25 04:14:41,381 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-25 04:14:41,420 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-25 04:14:41,425 INFO L357 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, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5a32944c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-25 04:14:41,425 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-25 04:14:41,428 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 14 states have (on average 1.5) internal successors, (21), 15 states have internal predecessors, (21), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-12-25 04:14:41,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-12-25 04:14:41,435 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 04:14:41,435 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 04:14:41,436 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 04:14:41,439 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 04:14:41,440 INFO L85 PathProgramCache]: Analyzing trace with hash -928420541, now seen corresponding path program 1 times [2023-12-25 04:14:41,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 04:14:41,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1256350411] [2023-12-25 04:14:41,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 04:14:41,449 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 [2023-12-25 04:14:41,449 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 04:14:41,451 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 04:14:41,452 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-12-25 04:14:41,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 04:14:41,524 INFO L262 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 1 conjunts are in the unsatisfiable core [2023-12-25 04:14:41,528 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 04:14:41,547 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-12-25 04:14:41,547 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-25 04:14:41,548 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 04:14:41,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1256350411] [2023-12-25 04:14:41,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1256350411] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-25 04:14:41,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-25 04:14:41,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-25 04:14:41,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066887810] [2023-12-25 04:14:41,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 04:14:41,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-25 04:14:41,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 04:14:41,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-25 04:14:41,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-25 04:14:41,582 INFO L87 Difference]: Start difference. First operand has 26 states, 14 states have (on average 1.5) internal successors, (21), 15 states have internal predecessors, (21), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-12-25 04:14:41,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 04:14:41,621 INFO L93 Difference]: Finished difference Result 50 states and 79 transitions. [2023-12-25 04:14:41,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-25 04:14:41,624 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 38 [2023-12-25 04:14:41,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 04:14:41,629 INFO L225 Difference]: With dead ends: 50 [2023-12-25 04:14:41,629 INFO L226 Difference]: Without dead ends: 24 [2023-12-25 04:14:41,631 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-25 04:14:41,635 INFO L413 NwaCegarLoop]: 31 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, 31 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 [2023-12-25 04:14:41,636 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 31 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-25 04:14:41,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2023-12-25 04:14:41,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2023-12-25 04:14:41,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 14 states have internal predecessors, (16), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-12-25 04:14:41,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 31 transitions. [2023-12-25 04:14:41,670 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 31 transitions. Word has length 38 [2023-12-25 04:14:41,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 04:14:41,670 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 31 transitions. [2023-12-25 04:14:41,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-12-25 04:14:41,671 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 31 transitions. [2023-12-25 04:14:41,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-12-25 04:14:41,673 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 04:14:41,674 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 04:14:41,677 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2023-12-25 04:14:41,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 04:14:41,878 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 04:14:41,879 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 04:14:41,879 INFO L85 PathProgramCache]: Analyzing trace with hash 1756515979, now seen corresponding path program 1 times [2023-12-25 04:14:41,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 04:14:41,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2040594217] [2023-12-25 04:14:41,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 04:14:41,880 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 [2023-12-25 04:14:41,880 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 04:14:41,883 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 04:14:41,884 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-12-25 04:14:41,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 04:14:41,946 INFO L262 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 19 conjunts are in the unsatisfiable core [2023-12-25 04:14:41,953 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 04:14:42,326 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-12-25 04:14:42,326 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 04:14:43,357 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-12-25 04:14:43,357 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 04:14:43,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2040594217] [2023-12-25 04:14:43,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2040594217] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-25 04:14:43,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-25 04:14:43,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 14 [2023-12-25 04:14:43,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319264179] [2023-12-25 04:14:43,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-25 04:14:43,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-25 04:14:43,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 04:14:43,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-25 04:14:43,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2023-12-25 04:14:43,360 INFO L87 Difference]: Start difference. First operand 24 states and 31 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-12-25 04:14:47,859 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-25 04:14:51,933 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-12-25 04:14:52,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 04:14:52,243 INFO L93 Difference]: Finished difference Result 35 states and 44 transitions. [2023-12-25 04:14:52,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-25 04:14:52,250 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 38 [2023-12-25 04:14:52,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 04:14:52,252 INFO L225 Difference]: With dead ends: 35 [2023-12-25 04:14:52,252 INFO L226 Difference]: Without dead ends: 32 [2023-12-25 04:14:52,252 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2023-12-25 04:14:52,253 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 8 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.8s IncrementalHoareTripleChecker+Time [2023-12-25 04:14:52,253 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 88 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 2 Unknown, 0 Unchecked, 8.8s Time] [2023-12-25 04:14:52,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2023-12-25 04:14:52,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2023-12-25 04:14:52,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 19 states have internal predecessors, (21), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-12-25 04:14:52,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 38 transitions. [2023-12-25 04:14:52,259 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 38 transitions. Word has length 38 [2023-12-25 04:14:52,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 04:14:52,260 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 38 transitions. [2023-12-25 04:14:52,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2023-12-25 04:14:52,260 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 38 transitions. [2023-12-25 04:14:52,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-12-25 04:14:52,261 INFO L187 NwaCegarLoop]: Found error trace [2023-12-25 04:14:52,261 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-25 04:14:52,268 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-12-25 04:14:52,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 04:14:52,470 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-25 04:14:52,471 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-25 04:14:52,471 INFO L85 PathProgramCache]: Analyzing trace with hash 792120606, now seen corresponding path program 1 times [2023-12-25 04:14:52,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-12-25 04:14:52,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [635231059] [2023-12-25 04:14:52,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-25 04:14:52,472 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 [2023-12-25 04:14:52,472 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-12-25 04:14:52,473 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-12-25 04:14:52,483 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-12-25 04:14:52,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-25 04:14:52,549 INFO L262 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-25 04:14:52,572 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-25 04:14:52,782 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 4 proven. 24 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-12-25 04:14:52,782 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-25 04:14:53,163 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 4 proven. 24 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-12-25 04:14:53,164 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-12-25 04:14:53,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [635231059] [2023-12-25 04:14:53,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [635231059] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-25 04:14:53,164 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-25 04:14:53,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2023-12-25 04:14:53,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584820644] [2023-12-25 04:14:53,165 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-25 04:14:53,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-25 04:14:53,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-12-25 04:14:53,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-25 04:14:53,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2023-12-25 04:14:53,167 INFO L87 Difference]: Start difference. First operand 31 states and 38 transitions. Second operand has 14 states, 10 states have (on average 2.4) internal successors, (24), 8 states have internal predecessors, (24), 11 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 9 states have call predecessors, (13), 10 states have call successors, (13) [2023-12-25 04:14:53,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-25 04:14:53,359 INFO L93 Difference]: Finished difference Result 33 states and 40 transitions. [2023-12-25 04:14:53,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-25 04:14:53,364 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 10 states have (on average 2.4) internal successors, (24), 8 states have internal predecessors, (24), 11 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 9 states have call predecessors, (13), 10 states have call successors, (13) Word has length 46 [2023-12-25 04:14:53,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-25 04:14:53,364 INFO L225 Difference]: With dead ends: 33 [2023-12-25 04:14:53,364 INFO L226 Difference]: Without dead ends: 0 [2023-12-25 04:14:53,365 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 77 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2023-12-25 04:14:53,366 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 5 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-25 04:14:53,366 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 103 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-25 04:14:53,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-12-25 04:14:53,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-12-25 04:14:53,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-25 04:14:53,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-12-25 04:14:53,367 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 46 [2023-12-25 04:14:53,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-25 04:14:53,367 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-12-25 04:14:53,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 10 states have (on average 2.4) internal successors, (24), 8 states have internal predecessors, (24), 11 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 9 states have call predecessors, (13), 10 states have call successors, (13) [2023-12-25 04:14:53,367 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-12-25 04:14:53,367 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-12-25 04:14:53,369 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-25 04:14:53,393 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2023-12-25 04:14:53,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-12-25 04:14:53,577 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-12-25 04:14:54,064 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-12-25 04:14:54,064 INFO L895 garLoopResultBuilder]: At program point L29(line 29) the Hoare annotation is: (and (bvuge |ULTIMATE.start_main_~a~0#1| (_ bv1 32)) (bvule |ULTIMATE.start_main_~b~0#1| (_ bv1 32)) (bvuge |ULTIMATE.start_main_~b~0#1| (_ bv1 32)) (bvule |ULTIMATE.start_main_~a~0#1| (_ bv1 32))) [2023-12-25 04:14:54,065 INFO L895 garLoopResultBuilder]: At program point L27(line 27) the Hoare annotation is: (and (bvuge |ULTIMATE.start_main_~a~0#1| (_ bv1 32)) (bvule |ULTIMATE.start_main_~b~0#1| (_ bv1 32)) (bvuge |ULTIMATE.start_main_~b~0#1| (_ bv1 32)) (bvule |ULTIMATE.start_main_~a~0#1| (_ bv1 32))) [2023-12-25 04:14:54,065 INFO L895 garLoopResultBuilder]: At program point L25(line 25) the Hoare annotation is: (bvule |ULTIMATE.start_main_~a~0#1| (_ bv1 32)) [2023-12-25 04:14:54,065 INFO L895 garLoopResultBuilder]: At program point L25-1(line 25) the Hoare annotation is: (and (bvule |ULTIMATE.start_main_~b~0#1| (_ bv1 32)) (bvule |ULTIMATE.start_main_~a~0#1| (_ bv1 32))) [2023-12-25 04:14:54,065 INFO L902 garLoopResultBuilder]: At program point L23(line 23) the Hoare annotation is: true [2023-12-25 04:14:54,065 INFO L899 garLoopResultBuilder]: For program point L23-1(line 23) no Hoare annotation was computed. [2023-12-25 04:14:54,065 INFO L899 garLoopResultBuilder]: For program point L52(line 52) no Hoare annotation was computed. [2023-12-25 04:14:54,065 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-12-25 04:14:54,065 INFO L895 garLoopResultBuilder]: At program point L38(line 38) the Hoare annotation is: (and (bvuge |ULTIMATE.start_main_~a~0#1| (_ bv1 32)) (bvuge |ULTIMATE.start_main_~x~0#1| (_ bv1 32)) (bvuge |ULTIMATE.start_main_~y~0#1| (_ bv1 32)) (bvule |ULTIMATE.start_main_~x~0#1| (_ bv1 32)) (bvule |ULTIMATE.start_main_~b~0#1| (_ bv1 32)) (bvule |ULTIMATE.start_main_~y~0#1| (_ bv1 32)) (bvuge |ULTIMATE.start_main_~b~0#1| (_ bv1 32)) (bvule |ULTIMATE.start_main_~a~0#1| (_ bv1 32)) (= (bvadd (bvmul |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~v~0#1|) (bvmul |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~u~0#1|)) (bvmul (bvmul |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~a~0#1|) (_ bv2 32)))) [2023-12-25 04:14:54,065 INFO L899 garLoopResultBuilder]: For program point L38-1(lines 37 50) no Hoare annotation was computed. [2023-12-25 04:14:54,065 INFO L899 garLoopResultBuilder]: For program point L30(line 30) no Hoare annotation was computed. [2023-12-25 04:14:54,065 INFO L895 garLoopResultBuilder]: At program point L26(line 26) the Hoare annotation is: (and (bvuge |ULTIMATE.start_main_~a~0#1| (_ bv1 32)) (bvule |ULTIMATE.start_main_~b~0#1| (_ bv1 32)) (bvule |ULTIMATE.start_main_~a~0#1| (_ bv1 32))) [2023-12-25 04:14:54,066 INFO L899 garLoopResultBuilder]: For program point L43(lines 43 49) no Hoare annotation was computed. [2023-12-25 04:14:54,066 INFO L895 garLoopResultBuilder]: At program point L43-2(lines 37 50) the Hoare annotation is: (and (bvuge |ULTIMATE.start_main_~a~0#1| (_ bv1 32)) (bvuge |ULTIMATE.start_main_~x~0#1| (_ bv1 32)) (bvuge |ULTIMATE.start_main_~y~0#1| (_ bv1 32)) (bvule |ULTIMATE.start_main_~x~0#1| (_ bv1 32)) (bvule |ULTIMATE.start_main_~b~0#1| (_ bv1 32)) (bvule |ULTIMATE.start_main_~y~0#1| (_ bv1 32)) (bvuge |ULTIMATE.start_main_~b~0#1| (_ bv1 32)) (bvule |ULTIMATE.start_main_~a~0#1| (_ bv1 32)) (= (bvadd (bvmul |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~v~0#1|) (bvmul |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~u~0#1|)) (bvmul (bvmul |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~a~0#1|) (_ bv2 32)))) [2023-12-25 04:14:54,066 INFO L895 garLoopResultBuilder]: At program point L37-2(lines 37 50) the Hoare annotation is: (= (bvadd (bvmul |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~v~0#1|) (bvmul |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~u~0#1|)) (bvmul (bvmul |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~a~0#1|) (_ bv2 32))) [2023-12-25 04:14:54,066 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 8 10) the Hoare annotation is: true [2023-12-25 04:14:54,066 INFO L899 garLoopResultBuilder]: For program point L9(line 9) no Hoare annotation was computed. [2023-12-25 04:14:54,066 INFO L899 garLoopResultBuilder]: For program point L9-2(lines 8 10) no Hoare annotation was computed. [2023-12-25 04:14:54,066 INFO L899 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 8 10) no Hoare annotation was computed. [2023-12-25 04:14:54,066 INFO L899 garLoopResultBuilder]: For program point L13(lines 13 14) no Hoare annotation was computed. [2023-12-25 04:14:54,066 INFO L899 garLoopResultBuilder]: For program point L12(lines 12 15) no Hoare annotation was computed. [2023-12-25 04:14:54,066 INFO L899 garLoopResultBuilder]: For program point L12-2(lines 11 17) no Hoare annotation was computed. [2023-12-25 04:14:54,066 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 11 17) no Hoare annotation was computed. [2023-12-25 04:14:54,066 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 11 17) the Hoare annotation is: true [2023-12-25 04:14:54,067 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2023-12-25 04:14:54,069 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-12-25 04:14:54,070 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-25 04:14:54,077 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.12 04:14:54 BoogieIcfgContainer [2023-12-25 04:14:54,077 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-25 04:14:54,078 INFO L158 Benchmark]: Toolchain (without parser) took 13327.02ms. Allocated memory was 202.4MB in the beginning and 253.8MB in the end (delta: 51.4MB). Free memory was 140.0MB in the beginning and 148.8MB in the end (delta: -8.8MB). Peak memory consumption was 43.7MB. Max. memory is 8.0GB. [2023-12-25 04:14:54,078 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 202.4MB. Free memory is still 151.9MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-25 04:14:54,078 INFO L158 Benchmark]: CACSL2BoogieTranslator took 201.77ms. Allocated memory is still 202.4MB. Free memory was 139.7MB in the beginning and 128.2MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-12-25 04:14:54,078 INFO L158 Benchmark]: Boogie Procedure Inliner took 29.89ms. Allocated memory is still 202.4MB. Free memory was 128.2MB in the beginning and 126.7MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-12-25 04:14:54,078 INFO L158 Benchmark]: Boogie Preprocessor took 43.67ms. Allocated memory is still 202.4MB. Free memory was 126.7MB in the beginning and 124.8MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-25 04:14:54,079 INFO L158 Benchmark]: RCFGBuilder took 332.08ms. Allocated memory was 202.4MB in the beginning and 253.8MB in the end (delta: 51.4MB). Free memory was 124.8MB in the beginning and 216.3MB in the end (delta: -91.5MB). Peak memory consumption was 17.6MB. Max. memory is 8.0GB. [2023-12-25 04:14:54,079 INFO L158 Benchmark]: TraceAbstraction took 12713.83ms. Allocated memory is still 253.8MB. Free memory was 215.8MB in the beginning and 148.8MB in the end (delta: 67.0MB). Peak memory consumption was 67.0MB. Max. memory is 8.0GB. [2023-12-25 04:14:54,080 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 202.4MB. Free memory is still 151.9MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 201.77ms. Allocated memory is still 202.4MB. Free memory was 139.7MB in the beginning and 128.2MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 29.89ms. Allocated memory is still 202.4MB. Free memory was 128.2MB in the beginning and 126.7MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 43.67ms. Allocated memory is still 202.4MB. Free memory was 126.7MB in the beginning and 124.8MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 332.08ms. Allocated memory was 202.4MB in the beginning and 253.8MB in the end (delta: 51.4MB). Free memory was 124.8MB in the beginning and 216.3MB in the end (delta: -91.5MB). Peak memory consumption was 17.6MB. Max. memory is 8.0GB. * TraceAbstraction took 12713.83ms. Allocated memory is still 253.8MB. Free memory was 215.8MB in the beginning and 148.8MB in the end (delta: 67.0MB). Peak memory consumption was 67.0MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 14]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 26 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 12.7s, OverallIterations: 3, TraceHistogramMax: 6, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 9.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.5s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2 mSolverCounterUnknown, 14 SdHoareTripleChecker+Valid, 9.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 13 mSDsluCounter, 222 SdHoareTripleChecker+Invalid, 8.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 153 mSDsCounter, 7 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 122 IncrementalHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 7 mSolverCounterUnsat, 69 mSDtfsCounter, 122 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 204 GetRequests, 176 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=31occurred in iteration=2, InterpolantAutomatonStates: 18, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 11 LocationsWithAnnotation, 26 PreInvPairs, 34 NumberOfFragments, 138 HoareAnnotationTreeSize, 26 FormulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 11 FormulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.5s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 2.1s InterpolantComputationTime, 122 NumberOfCodeBlocks, 122 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 201 ConstructedInterpolants, 0 QuantifiedInterpolants, 579 SizeOfPredicates, 14 NumberOfNonLiveVariables, 231 ConjunctsInSsa, 35 ConjunctsInUnsatCore, 5 InterpolantComputations, 2 PerfectInterpolantSequences, 236/308 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 37]: Loop Invariant Derived loop invariant: (((((((((a >= 1) && (x >= 1)) && (y >= 1)) && (x <= 1)) && (b <= 1)) && (y <= 1)) && (b >= 1)) && (a <= 1)) && ((((y * v) + (x * u)) % 4294967296) == ((b * a) * 2))) RESULT: Ultimate proved your program to be correct! [2023-12-25 04:14:54,099 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...